SCHLUMBERGER LTD /NY/
10-K405, 1998-03-30
OIL & GAS FIELD SERVICES, NEC
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<PAGE>
 
                                                                            1997

                      SECURITIES AND EXCHANGE COMMISSION
                            Washington, D.C. 20549

                                   Form 10-K

                                  (Mark One)

            X ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE 
            -
                        SECURITIES EXCHANGE ACT OF 1934

                    For fiscal year ended December 31, 1997

                                      OR

           TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE
                        SECURITIES EXCHANGE ACT OF 1934

               For the Transition period from           to
                                              ---------    ---------

                         Commission File Number 1-4601

                   Schlumberger N.V. (Schlumberger Limited)
            (Exact name of registrant as specified in its charter)

Netherlands Antilles                                           52-0684746
- --------------------                                           ----------
(State or other jurisdiction of                              (I.R.S. Employer
incorporation or organization)                               Identification No.)

277 Park Avenue
New York, New York, U.S.A.                                      10172-0266

42, rue Saint-Dominique
Paris, France                                                     75007

Parkstraat 83,
The Hague,
The Netherlands                                                   2514 JG

- ----------------------------                                  -----------------
(Addresses of principal                                           (Zip Codes)
executive offices)

 Registrant's telephone number in the United States, including area code, is:
                                (212) 350-9400.

                           (Cover page 1 of 2 pages)
<PAGE>
 
          Securities registered pursuant to Section 12(b) of the Act:

                                                      Name of each exchange on
Title of each class                                        which registered
- -------------------                                   ------------------------
Common Stock, Par Value $0.01                      New York Stock Exchange
                                                   Paris Stock Exchange
                                                   The London Stock Exchange
                                                   Amsterdam Stock Exchange
                                                   Swiss Stock Exchange

          Securities registered pursuant to Section 12(g) of the Act:

                                     None

Indicate by check mark whether Registrant (1) has filed all reports required to
be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during
the preceding 12 months (or for such shorter period that the Registrant was
required to file such reports), and (2) has been subject to such filing
requirements for the past 90 days.

        YES    X                                                 NO
              ---                                                   ---

Indicate by check mark if disclosure of delinquent filers pursuant to Item 405
of Regulation S-K is not contained herein, and will not be contained, to the
best of Registrant's knowledge, in definitive proxy or information statements
incorporated by reference in Part III of this Form 10-K or any amendment to this
Form 10-K.

                                      [X]

As of February 23, 1998, the aggregate market value of the voting stock held by
non-affiliates, calculated on the basis of the closing price on the NYSE
Composite Tape, was $35,907,858,318.

As of February 23, 1998, Number of Shares of Common Stock Outstanding:
498,287,713.

                      DOCUMENTS INCORPORATED BY REFERENCE

Portions of the following documents have been incorporated herein by reference
into the Parts indicated:

                   Definitive Proxy Statement for the Annual General
               Meeting of Stockholders to be held April 8, 1998 ("Proxy
               Statement"), Part III.

                           (Cover page 2 of 2 pages)
<PAGE>
 
PART I

Item 1         Business
- ------         --------

All references herein to "Registrant" and "Company" refer to Schlumberger
Limited and its consolidated subsidiaries. Registrant's business comprises three
industry segments - l) Oilfield Services, 2) Measurement & Systems, and 3)
Omnes. Due to immateriality, Omnes is not a reportable segment for financial
reporting purposes.

Oilfield Services
- -----------------

Oilfield Services provides virtually every type of exploration and production
service required during the life of an oil and gas reservoir: seismic data
acquisition, processing and interpretation; drilling rigs; directional drilling
and real-time drilling analysis; cementing and stimulation of wells; wireline
logging; well evaluation, testing and production; integrated data services and
software, and project management. Services comprise formation evaluation, well
testing and production services for oil and gas wells: borehole measurements of
petrophysical, geological and seismic properties; cement and corrosion
evaluation; perforating; modular production systems; permanent monitoring and
control systems; production logging, and light remedial and abandonment
services, and engineering and pumping services for cementing, drilling fluids,
fracturing, acidizing, sand control, water control and coiled tubing
applications; seismic data acquisition, processing and interpretation services
for marine, land and transition zone; seismic reservoir monitoring and
characterization services; fully integrated project management including survey
evaluation and design services; acquisition, processing and sales of
non-exclusive surveys; contract drilling services, offshore and on land, with
dynamically positioned drillships semisubmersibles, jackup rigs, drilling
tenders, swamp barges and land rigs; real-time drilling services: directional
drilling, measurements-while-drilling and logging-while-drilling; exploration
and production solutions for optimizing the value of oil and gas reservoirs:
integrated software systems, data management solutions and processing and
interpretive services, and project management and well engineering services:
selection of optimum oilfield technology; implementation of safety and quality
management systems; coordination and management of operations for well
construction, production and field development projects.

As of February 1, 1998, the business is organized in two groups, Solutions and
Products. The Solutions Group is organized along geographic lines to develop,
sell and implement all oilfield services as well as customized and integrated
solutions to meet specific client needs. The Products Group is responsible for
product development across the organization as well as training and technical
support for each type of service in the field to ensure the highest standards of
service to clients.

Registrant's Oilfield Services are marketed by its own personnel. The customer
base, business risks, and opportunities for growth are essentially uniform
across all services. There is a sharing of production facilities and research
centers; labor force is interchangeable. Technological innovation, quality of
service, and price are the principal methods of competition. Competition varies
geographically with respect to the different services offered. While there are
numerous competitors, both large and small, Registrant believes that it is an
industry leader in providing contract drilling services, seismic services,
measurements-while-drilling and logging-while-drilling services, and fully
computerized wireline logging and geoscience software and computing services.

                                       1
<PAGE>
 
Measurement & Systems
- ---------------------

Measurement & Systems consists of Test & Transactions and Resource Management
Services (RMS). Test & Transactions supplies technology, products, services and
systems to the semiconductor, banking, telecommunication, retail petroleum,
transportation and health care industries. Test & Transactions designs and
implements broad-based, customized solutions to help clients improve time to
market, optimize their business opportunities and improve their productivity. It
designs and manufactures smart and magnetic stripe cards, terminals, equipment
and management systems for transactions in a wide range of sectors, including
telecommunications, retail and banking, network access and security, systems for
retail petroleum, parking and mass transit, health care management and campus
communities. It also designs and manufactures back-end manufacturing equipment
for testing semiconductor devices, including diagnostic systems, automated
handling systems and test equipment. It provides metrology solutions for the
front-end semiconductor fabrication equipment market and equipment for testing
complete electronic assemblies for the telecommunications and automotive
industries.

Resource Management Services is a global solutions provider to electricity, gas
and water resource industry clients worldwide, helping them to manage resources
and enhance transactions. The RMS group delivers innovative solutions by
providing measurement products, systems and services for creating and sharing
value with all clients. It designs systems for management of electricity
distribution and usage (residential metering and energy management systems;
utility revenue collection systems; commercial, industrial, transmission and
distribution measurement and billing products and systems; load management
systems); systems for management of gas usage (residential, commercial and
industrial gas meters; regulators, governors, safety valves, stations and
systems; gas treatment including filtration, odorization and heating; network
management; and prepayment systems); meters and systems for management of
residential, commercial and industrial water usage covering the range of
effective water distribution management and diverse heat distribution and
industrial applications; meter communication systems, including remote metering
and wireless communication systems for utility markets; distributed measurement
solutions, systems integration and data services; and services, providing
software and turnkey installation, repair and maintenance solutions to add value
in fully managed projects.

Products of the Measurement & Systems industry segment are primarily sold
through Registrant's own sales force, augmented through distributors and
representatives. The nature of the product range and customer profile allow for
transferability of sales personnel and cross-product sales forces in key
geographic areas. Such teams operate in Asia, Russia, South America and Central
America. Product demand and pricing are affected by global and national economic
conditions. The price of products in this industry segment varies from less than
one hundred dollars to more than a million dollars. There are numerous
competitors with regard to these products, and the principal methods of
competition are price, performance, and service.

Omnes
- -----

Omnes provides information technology and communications services to oil and gas
companies and to companies with operations in remote regions. It offers
solutions for wide- and local-area networks, including satellite-based networks,
network security, Internet, intranet and messaging.

                                       2
<PAGE>
 
Year 2000 Issue
- ---------------

For information describing the Company's estimate of the effects of the Year
2000 Issue on its businesses, refer to Item 7, "Management's Discussion and
Analysis of Financial Condition and Results of Operations" on page 21 of this
10-K Report.

Acquisitions
- ------------

Information on acquisitions made by the Registrant or its subsidiaries appears
in the two paragraphs under the heading "Acquisitions" on page 30 of this 10-K
Report.

GENERAL
- -------

Research & Development
- ----------------------

Research to support the engineering and development efforts of Registrant's
activities is conducted at Schlumberger Austin Product Center, Austin, Texas;
Schlumberger-Doll Research, Ridgefield, Connecticut; Schlumberger Cambridge
Research, Cambridge, England, and at Fuchinobe, Japan and Montrouge, France.

Patents
- -------

While Registrant seeks and holds numerous patents, no particular patent or group
of patents is considered material to Registrant's business.

Seasonality
- -----------

Although weather and natural phenomena can temporarily affect delivery of
oilfield services, the widespread geographic location of such services precludes
the overall business from being characterized as seasonal. However, because
oilfield services are provided in the Northern Hemisphere, severe winter weather
can temporarily affect the delivery of such services and products in the winter
months.

Customers and Backlog of Orders
- -------------------------------

Neither Oilfield Services nor Measurement & Systems is dependent on one or a few
customers, the loss of which would have a significant adverse impact on its
business. Oilfield Services has no backlog since this segment is primarily
service rather than product related. The Measurement & Systems segment had a
backlog of orders, believed to be firm, of $955 million at December 31, 1997,
and a backlog of $764 million at December 31, 1996, on a comparable basis. There
is no assurance that any of the current backlog will actually result in sales.
About 54% of Omnes' revenue comes from data communications and networking
services provided to a number of Schlumberger companies. Omnes has no backlog
since this segment is primarily service, rather than product, related.

Government Contracts
- --------------------

No material portion of Registrant's business is subject to renegotiation of
profits or termination of contracts by the US Government.

Employees
- ---------

As of December 31, 1997, Registrant had approximately 63,500 employees.

                                       3
<PAGE>
 
Non-US Operations
- -----------------

Registrant's non-US operations are subject to the usual risks which may affect
such operations. Such risks include unsettled political conditions in certain
areas, exposure to possible expropriation or other governmental actions,
exchange controls, and currency fluctuations. Although it is impossible to
predict such occurrences or their effect on the Registrant, management believes
these risks to be acceptable.

Environmental Protection
- ------------------------

Compliance with governmental provisions relating to the protection of the
environment does not materially affect Registrant's capital expenditures,
earnings or competitive position.

Financial Information
- ---------------------

Financial information by industry segment and by geographic area for the years
ended December 31, 1997, 1996 and 1995 is given on pages 35 through 38 of this
10-K report, within the NOTES TO CONSOLIDATED FINANCIAL STATEMENTS.

Item 2         Properties
- ------         ----------

Registrant owns or leases manufacturing facilities, administrative offices,
service centers, research centers, sales offices and warehouses in North
America, Latin America, Europe, Africa, Australia, New Zealand and Asia. Most
facilities are owned in fee although a few are held through long-term leases. No
significant lease is scheduled to terminate in the near future, and Registrant
believes comparable space is readily obtainable should any lease expire without
renewal. Registrant believes all of its properties are generally well maintained
and adequate for the intended use.

The principal manufacturing facilities related to the Oilfield Services industry
segment are owned in fee and located at Clamart, France; Fuchinobe, Japan;
Horten and Bergen, Norway; and Austin, Houston, La Marque, Rosharon and Sugar
Land, Texas, USA. Many of the Registrant's activities in this segment are
performed at the clients' wellsites.

Outside of the United States, the principal owned or leased facilities related
to the Measurement & Systems industry segment are located at Buenos Aires,
Argentina; Mulgrave, Australia; Vienna, Austria; Brussels, Belgium; Americana
and Campinas, Brazil; Trois Rivieres, Quebec, Canada; Santiago, Chile; Changsha
Chongquing, Hong Kong and Shenyang, China; Abbeville, Bagnolet, Besancon,
Chambray-les-Tours, Chasseneuil, Colombes, Hagenau, Macon, Massy, Montrouge,
Orleans, Poitiers, Pont Audemer, Reims, and Saint-Etienne and Tours, France;
Berlin, Dreieich, Ettlingen, Hameln, Karlsruhe, Munich, Oldenburg, and Schwelm,
Germany; Bladel and Dordrecht, Holland; Budapest and Godollo, Hungary; New
Delhi, India; Jakarta, Indonesia; Asti, Barlassina, Frosinone, Milazzo, Milan,
Naples, Torino and Vicenza, Italy; Fuchinobe, Japan; Kuala Lumpur, Malaysia;
Famalicao, Portugal; St. Petersburg, Russia; Leon, Montornes and Rubi, Spain;
Taipeh County, Taiwan; Blackburn, Dundee, Felixstowe, Ferndown, Manchester,
Oldham, and Port Glasgow in the United Kingdom.

Within the United States, Measurement & Systems facilities are located in
Tallassee, Montgomery and Mobile, Alabama; San Jose and Simi Valley, California;
Norcross, Georgia; Owenton, Kentucky; Owings Mills, Maryland; Concord,
Massachusetts; Moorestown, New Jersey; Columbus, Ohio; Greenwood and Oconee,
South Carolina; Bonham, Texas, and Chesapeake, Virginia.

Outside of the United States the principal facilities (all leased) related to
Omnes are located in London, England; Caracas, Venezuela; Montrouge, France; and
Jakarta, Indonesia. 

                                       4
<PAGE>
 
Within the United States, Omnes' principal facilities are located in Houston,
Texas.

See also "Research & Development", on page 3 for a description of research
facilities.

Item 3         Legal Proceedings
- ------         -----------------

The information with respect to Item 3 is set forth under the heading "Outcome
of Litigation" (page 20 of this 10-K report) within the Management's Discussion
and Analysis of Financial Condition and Results of Operations as part of Item 7
and under the heading "Contingencies" (page 34 of this 10-K Report) within the
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS as part of Item 8, Financial
Statements and Supplementary Data.

Item 4         Submission of matters to a vote of security holders
- ------         ---------------------------------------------------

No matters were submitted to a vote of Registrant's security holders during the
fourth quarter of the fiscal year covered by this report.

Executive Officers of the Registrant

The executive officers of the Registrant, their ages as of March 1, 1998, and
their five-year business histories are as follows:

<TABLE> 
<CAPTION> 

                                            Present Position and Five-Year Business
Name                                Age                       Experience
- --------------------------------------------------------------------------------
<S>                                <C>     <C> 
D. Euan Baird                       60      Chairman, President and Chief
                                               Executive Officer since prior to 1992.

Arthur Lindenauer                   60      Executive Vice President and Chief
                                               Financial Officer since prior to 1992;
                                            Chief Accounting Officer since April 1992.

Victor E. Grijalva                  59      Executive Vice President - Oilfield
                                               Services since 1994;
                                            Executive Vice President for Wireline,
                                               Testing & Anadrill 1992, 1993.

Clermont A. Matton                  56      Executive Vice President - Resource
                                               Management Services since June 1997;
                                            Executive Vice President - Measurement &
                                               Systems 1993 to June 1997;
                                            Executive Vice President -
                                               Technologies 1992 and prior.

 Irwin Pfister                      52      Executive Vice President - Test &
                                               Transactions since June 1997;
                                            President Automated Test Equipment 1995-1997  
                                            Vice President and General Manager - 
                                               Automated Test Equipment 1993-1995 and prior.

Ian Strecker                        58      Executive Vice President - Information
                                               Technology and Quality, Health, Safety &
                                               Environment since January 1, 1996;
                                            Executive Vice President -  Information
                                              Technology and Communication 1993 and
                                              prior.
</TABLE> 

                                       5
<PAGE>
 
<TABLE> 
<CAPTION> 

                                            Present Position and Five-Year Business
Name                                Age                       Experience
- --------------------------------------------------------------------------------
<S>                                <C>     <C> 
Chad Deaton                         45      Executive Vice President - OFS Solutions
                                               since February 1, 1998;
                                            President - Dowell August 1995 to
                                               February 1, 1998;
                                            Director of Personnel - Wireline & Testing
                                               November 1994 to August 1995;
                                            Vice President - Drilling Fluids (Dowell)
                                               November 1994 and prior.

Andrew Gould                        51      Executive Vice President - OFS Products
                                               since February 1, 1998;
                                            President - Wireline & Testing October 1993
                                               to February 1, 1998;
                                            President - Sedco Forex September
                                               1993 and prior.

Jean-Paul Bize                      55      Vice President - Business Development
                                                since June 1997;
                                            President, Electronic Transactions
                                                November 1994 to June 1997;
                                            General Manager - Electricity Management
                                                November 1994 and prior.

David S. Browning                   58      Secretary and General Counsel since
                                               prior to 1992.

Pierre E. Bismuth                   53      Vice President - Personnel since 1994;
                                            Personnel Director - Oilfield Services
                                                October 1993 to January 1994;
                                            Personnel Director - Wireline, Testing
                                                & Anadrill 1993 and prior.

Jean-Marc Perraud                   50      Vice President - Director of Taxes
                                               since May 1993;
                                            Controller Dowell Schlumberger
                                               January to May 1993;
                                            Controller Schlumberger Industries
                                                1992 and prior.

J-D. Percevault                     52      Vice President since January 1996;
                                            Vice President European Affairs May
                                               1994 to January 1996; President
                                            Geco-Prakla May 1994 and prior.

Pierre-Jean Sivignon                42      Treasurer since January 1996;
                                            Manager Business Development,
                                               September 1994 to January 1996;
                                            Manager of Smart Card Systems - Banking
                                               & Industry, September 1994 and
                                               prior.
</TABLE> 

                                       6
<PAGE>
 
PART II
- -------

Item 5         Market for the Registrant's Common Stock and Related
- ------         ----------------------------------------------------
               Stockholder Matters
               -------------------

As of December 31, 1997, there were 498,036,020 shares of the Common Stock of
the Registrant outstanding, exclusive of 121,099,589 shares held in Treasury,
and held by approximately 22,000 stockholders of record. The principal United
States market for Registrant's Common Stock is the New York Stock Exchange.

Registrant's Common Stock is also traded on the Amsterdam, London, Paris, and
Swiss stock exchanges. In 1997, the Registrant delisted its shares from the
Brussels, Frankfurt, and Tokyo stock exchanges.

Common Stock, Market Prices and Dividends Declared per Share
- ------------------------------------------------------------

The information with respect to this portion of Item 5 is set forth under the
heading "Common Stock, Market Prices and Dividends Declared per Share" beginning
on page 19 and continued to "Environmental Matters" on page 20 of this 10-K
Report.

                                       7
<PAGE>
 
Item 6         Selected Financial Data
- ------         -----------------------

<TABLE> 
<CAPTION> 

FIVE-YEAR SUMMARY
                                        (Stated in millions except per share amounts)
 
Year Ended December 31,               1997       1996      1995       1994       1993
                                      ----       ----      ----       ----       ----
<S>                             <C>          <C>        <C>       <C>         <C> 
SUMMARY OF OPERATIONS
Operating revenue:
  Oilfield Services                $ 7,663    $ 6,129   $ 4,868    $ 4,365     $4,338
  Measurement & Systems              2,986      2,834     2,759      2,339      2,370
Total operating revenue            $10,648    $ 8,956   $ 7,622    $ 6,697     $6,705
                                   =======    =======   =======    =======     ======
  % increase over prior year          19 %        18%       14%         -%         6%
                                   -------    -------   -------    -------     ------ 

Operating income:
  Oilfield Services                $ 1,557    $   986   $    627   $   495     $  468
  Measurement & Systems                149        124        151       121        184         
  Eliminations                         (58)       (52)       (17)      (23)       (23)
                                   -------    -------   --------   -------     ------
                                   $ 1,648    $ 1,058   $    761   $   593     $   629
                                   =======    =======   ========   =======     =======
  % increase (decrease)
    over prior year                    56%        39%        28%       (6%)      (10%)
                                   -------    -------   -------    -------     ------ 
Interest expense                        87         72        82         63         69
                                   -------    -------   -------    -------     ------ 
Taxes on income (1)                    373       (176)      121         81         81
                                   -------    -------   -------    -------     ------ 
Income, before cumulative
  effect of a change
    in accounting principle        $ 1,296    $   851 $     649    $   536     $  583
                                   -------    -------   -------    -------     ------ 
  % increase (decrease)
    over prior year                    52%        31%        21%       (8%)      (12%)
                                   -------    -------   -------    -------     ------ 
Postretirement benefits                  -          -         -          -       (248)
                                   -------    -------   -------    -------     ------ 
Net income                         $ 1,296    $   851   $   649    $   536     $  335
                                   =======    =======   =======    =======     ======
Basic earnings per share: (2)
  Before cumulative effect
    of a change in accounting
      principle                    $  2.62    $  1.74   $  1.33    $  1.10     $ 1.20
  Postretirement benefits                -          -         -          -      (0.51)
                                   -------    -------   -------    -------     ------ 
Basic earnings per share           $  2.62    $  1.74   $  1.33    $  1.10     $ 0.69
                                   =======    =======   =======    =======     ====== 

Diluted earnings per share: (2)
  Before cumulative effect
    of a change in accounting
      principle                   $   2.52     $ 1.70 $    1.32     $ 1.10     $ 1.18
  Postretirement benefits                -          -         -          -      (0.51)
                                   -------    -------   -------    -------     ------ 
Diluted earnings per share        $   2.52     $ 1.70 $    1.32     $ 1.10     $ 0.67
                                   =======    =======   =======    =======     ====== 
Cash dividends declared (2)       $   0.75     $ 0.75   $0.7125     $ 0.60     $ 0.60
                                   =======    =======   =======    =======     ====== 
</TABLE> 

                                       8
<PAGE>
 
<TABLE> 
<CAPTION> 
                                         (Stated in millions except per share amounts)
 
Year Ended December 31,               1997       1996      1995       1994       1993
                                      ----       ----      ----       ----       ----
<S>                             <C>          <C>        <C>       <C>         <C> 
SUMMARY OF FINANCIAL DATA
Income as % of operating revenue       12%        10%        9%         8%         9%
                                   -------    -------   -------    -------     ------ 
Return on average
  stockholders' equity                 21%        16%       14%        12%        14%
                                   -------    -------   -------    -------     ------ 
Fixed asset additions              $ 1,496    $ 1,158   $   939    $   783     $  691
                                   -------    -------   -------    -------     ------ 
Depreciation expense               $   905    $   819   $   760    $   722     $  739
                                   -------    -------   -------    -------     ------ 
Avg. number of shares outstanding: (2)
    Basic                              495        490       485        487        485

   Assuming dilution                   514        500       488        489        489
                                   -------    -------   -------    -------     ------ 
AT DECEMBER 31,
Liquidity                          $   580    $   232   $   188    $   404     $  696
                                   -------    -------   -------    -------     ------ 
Working capital                    $ 2,441    $ 1,568   $ 1,259    $ 1,037     $  908
                                   -------    -------   -------    -------     ------ 
Total assets                       $12,097    $10,325   $ 8,910    $ 8,322     $7,917
                                   -------    -------   -------    -------     ------ 
Long-term debt                     $ 1,069    $  637    $   613    $   394     $  447
                                   -------    -------   -------    -------     ------ 
Stockholders' equity               $ 6,695    $ 5,626   $ 4,964    $ 4,583     $4,406
                                   -------    -------   -------    -------     ------ 
Number of employees                 63,500     57,000    51,000     48,000     48,000
                                   -------    -------   -------    -------     ------ 

</TABLE> 

(1) In 1996, the normal recurring provision for income taxes, before recognition
of the US tax loss carryforward benefit and the tax effect of the unusual items,
was $206 million.

(2) Restated for the 2-for-1 stock split on June 2, 1997.

Item 7         Management's Discussion and Analysis of Financial Condition
- ------         -----------------------------------------------------------
               and Results of Operations
               -------------------------

The Company has two reportable business industry segments, Oilfield Services and
Measurement & Systems.

                                                       (Stated in millions)
                            Oilfield Services          Measurement & Systems
                     ----------------------------  ---------------------------
                      1997      1996      %Change     1997    1996     %Change
                      ----      ----      -------     ----    ----     -------
Operating revenue    $7,663   $6,129        25%     $2,986   $2,834      5%
Operating income 1   $1,557  $   986        58%    $   149  $   124     20%

1 Operating income represents income before income taxes, excluding interest
expense and interest and other income, and the unusual items previously
announced in the third quarter of 1996. Explanation of these unusual items
appears in THE NOTES TO CONSOLIDATED FINANCIAL STATEMENTS under "Unusual Items."

                                       9
<PAGE>
 
Oilfield Services
- -----------------

1997 RESULTS
- ------------

Oilfield Services achieved impressive growth in 1997. Worldwide oil demand
increased by a strong 2.7%, fueled mainly by China, up 11%, Asia excluding
China, up 6%, Latin America, up 5%, and by a recovering Russia, up 5%. Oil
companies worldwide increased their exploration and production expenditures by
18% over 1996 levels to meet the increase in demand. Oilfield Services operating
income grew 58% over last year, reaching $1.56 billion, with strong
contributions from all activities. Operating revenue increased 25%, to $7.66
billion.

North America
- -------------

In North America, revenue increased 33%, and operating income jumped 115%. The
rig count climbed 26%. The highest revenue growth came from Dowell and
Geco-Prakla, up 27% and 55%, respectively. Dowell growth was due mainly to
cementing, fracturing and sand control services. In the Gulf of Mexico, there
was strong demand for DeepSea EXPRES* deepwater cementing systems and high
client acceptance of the revolutionary, nondamaging ClearFRAC* fracturing fluid.
Geco-Prakla marine seismic activity soared in the Gulf of Mexico, driven by high
non-exclusive proprietary survey activity for the ongoing Deepwater 2000
operations. Transition Zone activity concentrated on the South Louisiana coast
as part of the Transition 2000 campaign. GeoQuest grew 63%, due to 200% growth
in Data Management and Information Technology services and to the introduction
of the next-generation GeoFrame* 3.0 integrated reservoir characterization
system.

Outside North America
- ---------------------

Revenue increased 22% outside North America, while rig count increased 2%.
Operating income was up 45%. Sedco Forex and Wireline & Testing were the largest
contributors to revenue growth, up 42% and 13%, respectively. Sedco Forex
benefited from higher dayrates in the North Sea, Asia and West Africa and
increased activity in South America, Asia and Africa. Land rig activity
increased, including two new rigs in Mexico and two in Algeria. In Asia, fleet
expansion and higher swamp barge activity contributed to increased revenue. The
growth of Wireline & Testing, led by the Far and Middle East, increased
significantly faster than the rig count, due to stronger pricing, increased
service efficiencies and market share gains. Higher prices stemmed from the
swift deployment of high-technology tools and systems, including PLATFORM
EXPRESS*, CMR* and PL Flagship* services. Anadrill grew an impressive 35%, led
by Central Europe and the Far East. Growth at Anadrill came from increases in
market share and pricing, and from overall market growth. Logging-while-drilling
(LWD) services continued to surge, with the introduction of the new VISION475*
MWD (measurements-while-drilling)/LWD system for small-diameter wells.

Highlights
- ----------

The rapid pace of Oilfield Services growth resulted largely from delivering
customized solutions to oil companies striving to increase hydrocarbon
production. This allows our clients to meet increasing demand while reducing
exploration and production costs to maintain a competitive price per barrel.

Oilfield Services revenue grew 25%, faster than the 18% increase in exploration
and production spending by oil companies. The additional growth came from
increased drilling activity and from greater communication and cooperation with
our clients, leading to increased outsourcing of their noncore activities.
Growth was also realized from the application of key technologies and our
ability to help clients increase the recovery of hydrocarbons, as with IRO*
Integrated Reservoir Optimization service, which was introduced in the fourth
quarter.

                                       10
<PAGE>
 
Drilling Activity Increases

Throughout 1997, drilling activity and pricing continued to increase. The Sedco
Forex average offshore rig utilization of 94% was in line with the previous
year. Jackup utilization remained at 100%, and semisubmersible utilization was
97%. The Sedco Forex average onshore rig utilization for the year increased from
57% to 90%. At year end, the Sedco Forex fleet consisted of 84 units: 52
offshore and 32 onshore, up from 83 units at the end of 1996. The fleet includes
13 offshore units under bareboat charter or management contract. Sedco Forex has
eight deepwater drilling units capable of drilling in water depths of more than
3000 feet [approximately 1 km].

In July 1997, Oilfield Services received a ten-year integrated management
contract in Venezuela to build and operate, on Lake Maracaibo, three new
multipurpose service vessel (MPSV) drilling barges and three new MPSV lift
boats. The MPSV concept uses small, purpose-built vessels, each equipped with an
integrated package of Schlumberger services for well intervention, such as
wireline logging, CTD* coiled tubing drilling and tubing replacement. An MPSV
can perform a well intervention faster, and at a considerably lower cost, than a
full-size drilling unit. All six vessels are scheduled to be in operation by the
end of 1998.

In August, the Maersk Victory jackup was acquired and renamed Trident 19. In
September, the Sedco Forex semisubmersibles Drillstar and Sedco Explorer were
sold to a newly formed venture in which Schlumberger has a 25% interest. The
rigs will be operated by Sedco Forex under bareboat charters. The gain on sale
has been deferred and will be amortized over a six-year period.

In December, Sedco Forex received contracts covering five years to build two
Sedco Express* semisubmersible drilling rigs. The units will be delivered in the
fourth quarter of 1999. The Sedco Express rig represents the next generation of
deepwater, moderate-environment drilling units. Designed to optimize the entire
well construction process, it is expected to drill and complete a well
approximately 30% faster than a conventional fourth-generation unit. The unit
will be able to operate in water depths up to 7500 feet [2.3 km].

Relationships Create Growth Opportunities

Links between Schlumberger and oil and gas companies are continuing to develop
through our IPM (Integrated Project Management) activity. This business has
expanded from 100 employees in 1995 to nearly 600 today, and has contributed to
earnings on its own and through additional Oilfield Services activities. An
example of a recent alliance is the Dacion field project with LASMO plc in
Venezuela. In an assessment phase completed in June 1997, a joint integrated
team was formed by LASMO, GeoQuest and IPM to identify important technical
issues and recommend further actions. The objectives of the development phase
are to increase production and optimize recovery of reserves. Upon approval of
the plan, IPM will perform its implementation.

Key Technologies Improve Economics

In 1997, our Oilfield Services research and engineering investment of $320
million produced technologies for operating in harsher environments and reducing
finding and development costs. Oilfield Services capital expenditure exceeded
$1.3 billion and allowed rapid deployment of these technologies.

For geophysical applications, the Nessie* 4C MultiWave Array* multicomponent
seabed acquisition system was introduced by Geco-Prakla at the end of 1996.
Seismic waves are of two types--compressional and shear--each providing
different information about the subsurface geology. An analysis of the response
from the two wave types may determine the type of fluids contained in the
formation. Traditional 3D marine seismic data acquired with surface streamers 

                                       11
<PAGE>
 
reflect information exclusively from compressional waves, the only ones that can
travel through water. This provides a partial image of a reservoir. The Nessie
4C MultiWave Array system, which records both compressional and shear waves at
the seabed, has helped our clients learn more about their reservoirs. The system
significantly improves the client's ability to map the location and quantities
of oil and gas, better enabling them to optimally develop and recover reserves.
During the fourth quarter, a Nessie 4C MultiWave Array crew mobilized for a 200-
km2 [78-sq mile] multicomponent survey, approximately ten times the size of any
previous seabed survey.

Research and engineering in fluid chemistry have resulted in the development of
Dowell ClearFRAC fracturing fluid. Fracturing fluids are used to transport sand
or other proppants into oil and gas reservoirs to increase hydrocarbon
production. Normally these fluids have the disadvantage of leaving some solid
residue, which inhibits their full effectiveness. The ClearFRAC formulation is a
polymer-free fluid that leaves no residue and results in higher production.

Construction, operating and intervention costs in oil fields were reduced in
1997 through the proliferation and improved placement of highly deviated and
horizontal wells, and multilaterals drilled from a common trunk. New VISION475
technology is a slim 4.75-inch MWD/LWD service that reduces total well costs
while maximizing hydrocarbon production. This is possible by allowing a reduced
wellbore diameter without giving up the real-time formation evaluation
measurements needed for optimum geosteering and analysis. The VISION475
application possesses unique logging sensors that allow operators to steer to
the most productive zones in a formation. Worldwide deployment of this
technology has significantly improved field development returns on investment
for clients.

The CMR Combinable Magnetic Resonance service, performed by Wireline & Testing,
provides valuable insight to clients for finding oil in complex reservoirs,
discovering bypassed or untapped reserves and distinguishing oil from gas. For
example, in the North Sea this year, CMR technology was used to log an
exploration well in which the target sands held water. However, the CMR log
analysis indicated some unanticipated oil higher up in the well that
conventional log analysis would have missed. Subsequent testing confirmed the
presence of the oil. The oil company is now evaluating options, reviewing the
seismic data and contemplating a sidetrack. Following the CMR success, the oil
company decided to run the application in Alaska, Angola and Norway. Overall,
worldwide activity for CMR technology doubled since last year.

Today, massive amounts of data are acquired in our Oilfield Services activities.
GeoQuest develops software products to interpret and visualize these data and to
perform modeling and simulation. The GeoFrame integrated reservoir
characterization system is the centerpiece of GeoQuest software development
efforts. In 1997, GeoQuest released the next-generation GeoFrame 3.0
application. This software combines the power of IESX* and Charisma* seismic
interpretation systems with other applications. It delivers unparalleled power
to define and manage reservoirs, and its integrated capabilities let each member
of a multidisciplinary team simultaneously view, edit and interpret data and
results through all phases of a project. Users indicate a dramatic increase in
productivity, a streamlining of their work flow and the ability to create a more
accurate reservoir model.

Maximizing The Financial Performance of Reservoirs

In the fall of 1997, Schlumberger introduced the IRO Integrated Reservoir
Optimization service. This service combines new-generation reservoir
characterization and flow simulation tools with a team approach to evaluate
various field development and production strategies. Working closely with the
client, an experienced multidisciplinary team selects and implements the optimal
development plan. Reservoir monitoring and control processes are included to
prevent future production problems. The IRO concept offers numerous benefits
because it is proactive and closely links development decisions with a thorough

                                       12
<PAGE>
 
understanding of reservoir architecture, flow dynamics and response to various
well interventions. In the future, as new data acquisition, communications and
software tools are developed, it will be possible to achieve near real-time,
interactive reservoir management.

Improving Internal Efficiency

In addition to client-focused advancements, Schlumberger continues to improve
its internal efficiency and productivity. The Company has implemented, in full,
in all its districts in North America, and is implementing worldwide, the new
BASIS* (Business Application Solutions In Schlumberger) business management
tool, using the SAP R/3** integrated software application, which replaces dozens
of existing discrete applications with a single, seamless solution.

Schlumberger is also overhauling all training programs for engineers. These
programs emphasize learning, using information technology (IT), with the
objectives of improving training quality while decreasing training time. On-line
and CD-ROM training modules have been developed, and full use of it is achieved
by giving every new hire a laptop computer with connectivity to the internal
Schlumberger communications network and to the Internet. The immediate result
has been a reduction of the training period by up to 25%. The training programs
also encourage common steps with the objectives of creating and disseminating a
broader Oilfield Services culture, optimizing the costs of training and
positioning our engineers to thrive in the increasingly integrated oilfield
services environment.

1996 Results
- ------------

North America
- --------------

Revenue in North America grew 21%, while operating income rose 111%, compared
with 1995. The rig count increased 10%. All businesses contributed to this
growth, most notably GeoQuest, with a revenue increase of 52%, and Dowell and
Wireline & Testing, with increases of 17% and 13%, respectively.

As a general trend, prices improved on higher activity and the introduction of
new technologies. Dowell took the lead in the technically challenging
high-pressure, high-temperature pumping and cementing markets in the Gulf of
Mexico. This leadership was affirmed by the success of the DeepSea EXPRES
cementing head, an innovative completion technology which facilitates casing
cementing operations in deep water. Geco-Prakla significantly expanded its
non-exclusive seismic survey activities in the Gulf of Mexico. Sedco Forex
returned to North America with two rigs under management contract. Anadrill
successfully introduced worldwide the new RAPID* Reentry and Production
Improvement Drilling service, a crossdisciplinary technology which improves
production economics through reentry, sidetracking and extending existing
wellbores.

Outside North America
- ---------------------

Outside North America, revenue increased 28% and operating income climbed 51%,
versus 1995. Rig count rose 5%. All regions grew, with significant upswings in
the North Sea, Latin America and West Africa. The largest contributors were
Wireline & Testing and Sedco Forex, up 17% and 42%, respectively. Offshore
dayrates for Sedco Forex increased significantly. The trend toward integrated
services continued, resulting in the expansion of IPM operations. Formed in 1995
in response to increased demand for integrated solutions in the various phases
of the exploration and production process, at the end of 1996, IPM was
supervising, on behalf of clients, the operations of 34 drilling rigs.

Highlights
- ----------

In response to favorable market conditions, Schlumberger boosted capital
expenditures for Oilfield Services by 27% in 1996.

                                       13
<PAGE>
 
As CTD technology provides an effective alternative to conventional drilling in
reentry drilling markets, Dowell and Sedco Forex joined forces and expertise in
CTD technology, and Anadrill developed the new VIPER* slimhole directional
bottomhole assembly for coiled tubing service. In the fourth quarter, Dowell and
Baker Oil Tools introduced CoilWORKS* technology, drawing on the strategic
alliance between Schlumberger and Baker Hughes. The CoilWORKS service is a
seamless answer to workover applications by which the two companies have
combined their best-in-class technologies to address the growing demand for
economic, total system workover solutions for mature fields.

The GeoSteering* tool, which enables the driller to make course corrections
while drilling, made substantial gains in markets in the Far East. The SIMPLER*
101 drilling rig, a new modular land rig, was introduced in Gabon, where it
began a five-year integrated services contract in April. Several Dowell drilling
fluids products, including QUADRILL*, VISPLEX* and ULTIDRILL* fluids, gained
increased acceptance in 1996, in recognition of their contributions to drilling
efficiency and well productivity. PLATFORM EXPRESS and CMR services improve the
efficiency of wireline logging and deliver critical answers to difficult
formation evaluation problems. Activities of both services increased eightfold
over 1995 levels. Marine seismic efficiency continued to improve due to
aggressive deployment of the TRILOGY* onboard data management system and
Monowing* multistreamer towing technology. The introduction of the
fourth-generation Nessie marine streamer, with only a 54-mm [2.1-inch] outside
diameter, further extended the towing capacity and efficiency of Geco-Prakla
vessels. With the ECLIPSE* reservoir simulation software, the GeoFrame
integrated reservoir characterization system and the Finder* line of data
management products, GeoQuest now offers the oil industry the most comprehensive
range of integrated software systems, data management solutions and processing
and interpretation services. Tracking the flow of different fluids in horizontal
and high-angle wells became possible with the newly introduced production
logging technology, PL Flagship advanced well flow diagnosis service. Building
on a solid track record in well testing, the Wireline & Testing Early Production
System (EPS) group has expanded significantly. Early production systems saw
activity in the North Sea and Africa. Average offshore rig utilization grew to
94% from 89%, aided by jackup utilization of 100% and semisubmersible
utilization of 96%. At year end, the Sedco Forex fleet consisted of 83 rigs, up
from 76 at the end of 1995.

1995 Results
- ------------

North America
- -------------

North American revenue rose 3% in 1995, and operating income declined 43%,
compared with 1994, while the rig count declined 8%.

New technology was a chief driver of growth. PLATFORM EXPRESS service, the
latest-generation wireline logging technology, was introduced in the third
quarter, and set new standards for efficiency, reliability and answers in the
industry. By year end, there were 17 PLATFORM EXPRESS units deployed in North
America. The successful implementation of new stimulation techniques, such as
the PropNET* fluid system for hydraulic fracturing, improved hydrocarbon
recovery for clients at a time when eroding gas prices were impeding pressure
pumping activity. Our market and technological leadership in MWD and LWD
services continued. The ARC5* Array Resistivity Compensated tool was introduced
and received wide client acceptance as it provides accurate LWD resistivity
measurements in small-diameter wellbores. Also, demand for geological,
petrophysical and seismic interpretation software products drove the increase in
sales at Software Products. During the year, GeoQuest acquired the Petroleum
Division of Intera Information Technologies Corporation, renamed Reservoir
Technologies. Seismic activities were adversely impacted by weather in the Gulf
of Mexico and lower profitability on sales of non-exclusive seismic data.

                                       14
<PAGE>
 


Outside North America
- ---------------------

A 16% rise in revenue and 53% growth in operating income outside North America,
along with a 3% increase in rig count, were due mostly to activity in Latin
America, Africa and the North Sea. Demand increased for Modular Early Production
Facilities and the Universal Pressure Platform. Drilling Fluids services grew
substantially in Latin America and the UK sector of the North Sea. Revenue grew
due to increased activity and improved drilling rig dayrates in the North Sea
and West Africa, offset slightly by a temporary softening in the swamp barge and
tender markets and reduced demand for semisubmersibles in Southeast Asia.
Several important rig contracts were signed, notably for integrated services.
Momentum built in the first three quarters of 1995 in seismic operations was
offset in the fourth quarter by poor weather in the North Sea and operational
difficulties in Transition Zone operations. Deployment of Monowing multistreamer
towing technology and the trilogy data management system continued. New IDEAL*
Integrated Drilling Evaluation and Logging systems were deployed worldwide,
while the PowerPulse* MWD telemetry tool continued to set new standards for
reliability and durability.
Measurement & Systems
- ---------------------

1997 Results
- ------------

Revenue for Measurement & Systems grew 5% compared with 1996, driven primarily
by significant growth at Automated Test Equipment (ATE), demand for cards at
Electronic Transactions and previously announced acquisitions. These gains were
offset by an unstable business environment that affected electricity and gas
metering activities in Europe throughout the year, and by an unfavorable
fluctuation in currency exchange rates. Operating income for Measurement &
Systems rose 20%, as further turmoil associated with deregulation and
privatization in the European metering sector negatively impacted solid results
from the other businesses.

Metering revenue decreased 11% compared with 1996, due to negative currency
effects in Europe and Asia. The European business environment continued to be
affected by the privatization and deregulation of utilities as well as by the
implementation of new regulations on procurement. This led to increased
competition and severe price erosion. The revenue decline was substantial in
Italy and in the UK. In contrast, South America experienced a significant growth
in revenue with strong demand for water meters and the new SL16* electricity
meter. North America benefited from strong water and gas meter sales. Systems &
Services revenue declined 3%. In December, an agreement was signed with Illinois
Power to supply a two-way radio-frequency customer communication system. The
contract, which includes operation and maintenance over a 15-year period,
represents the industry's largest automatic meter reading (AMR) project to date.

Electronic Transactions revenue and orders grew 26% and 30%, respectively, from
1996. Smart card revenue increased 107% (40%, excluding the Solaic activity
acquired in December 1996). This solid growth was spurred by a continued
increase in demand for both microprocessor and memory cards, which are used in
cellular mobile communications, banking and payphone applications. To support
the continued volume growth, additional smart card production operations were
established in Hong Kong and Mexico. Sales of telecom equipment improved 7%
compared with 1996, as a result of the expansion of operations in China and
Mexico to meet growing customer demand.

Compared with 1996, ATE revenue and orders increased 37% and 54%, respectively.
Semiconductor testing systems grew 59%, reflecting a favorable trend toward
200-MHz and 400-MHz logic testers. Market share for ATE increased in all
semiconductor test market segments. Significant improvements in deliveries of
burn-in board loaders and unloaders and assembly systems fueled a 55% 

                                       15
<PAGE>
 
increase for automated handling systems. The rise in orders was primarily due to
exceptional growth in demand for the ITS9000* family of products at Test
Systems, accompanied by an increase at Diagnostic Systems, on stronger customer
acceptance of both the IDS2000* and P2X* semiconductor analysis systems. In
October 1997, Interactive Video Systems, Inc. (IVS), a metrology solutions
provider for the front-end semiconductor fabrication equipment market, was
acquired.

1996 Results
- ------------

Revenue and orders for Measurement & Systems grew 3% and 2%, respectively,
compared with 1995. A decline in Metering revenue only partially offset gains at
Electronic Transactions and Systems & Services. The rise in orders was led by
Electronic Transactions, Water Management and Systems & Services. Operating
income declined 18%, mainly due to poor business conditions for metering in
Europe and a decrease in demand for semiconductor test equipment.

Compared with 1995, revenue and orders for Metering fell 1% and 3%,
respectively. Demand for electricity meters in Europe continued to suffer,
particularly in the UK and Germany. Sales of gas meters improved, led by a
strong demand in the CIS.

Systems & Services revenue rose 12%, as deregulation created business
opportunities in Europe. Orders were up 10% from 1995 driven by increased
activity in France and the UK.

Including the acquisitions of Printer and Germann, Electronic Transactions
revenue and orders grew 18% and 17%, respectively. Smart cards grew 42%, spurred
by demand for memory and microprocessor cards for payphones and cellular phones
in China, Italy and the US. Electronic Transactions was the primary supplier of
smart cards for the 1996 Olympic Games in Atlanta, Georgia, US. Solaic, a French
smart card manufacturer, was acquired on December 31, 1996.

Automated Test Equipment revenue was essentially flat compared with the prior
year. A substantial increase in volume for IDS10000* diagnostic systems balanced
a decrease in demand for other products. Orders increased 3%.

1995 Results
- ------------

In 1995, revenue and orders grew 18% and 21%, respectively. This growth was
primarily due to acquisitions, favorable currency effects and healthy activity
in Europe and Asia. Operating income increased 25%.

For the Metering business, revenue improved 14% and orders rose 17%, due to the
acquisition of AEG's worldwide electricity metering operations and robust demand
across Europe.

Systems & Services revenue and orders grew 25%, mainly due to the rise in
service activities in the UK.

Compared with 1994, revenue and orders for Electronic Transactions soared 31%
and 36%, respectively. These gains included contributions from the acquisitions
of Malco Plastics and Messerschmidt Apparate in late 1994 and the acquisition of
Danyl in 1995. Card activity continued to grow due to cellular subscriber demand
in Europe and shipments to China.

Automated Test Equipment revenue and orders improved 32%, driven by strong
demand for the ITS9000 family of semiconductor test systems in North America,
Europe and Asia.

                                       16
<PAGE>
 
Net Income
- ----------
                                (Stated in millions except per share amounts)

                                                      Earnings per share(1)
                                                     -----------------------
                                  Net Income          Basic         Diluted
                                  ----------          -----         -------
  1997                              $1,296           $ 2.62          $ 2.52
                                    ======           ======          ======
  1996                              $  851           $ 1.74          $ 1.70
                                    ======           ======          ======
  1995                              $  649           $ 1.33          $ 1.32
                                    ======           ======          ======

(1) Restated for the 2-for-1 stock split on June 2, 1997 

In 1997, operating income of the Oilfield Services segment increased $571
million, or 58%, to $1.56 billion. The growth reflected the continued higher
demand for oil and gas and the strong increase in exploration and production
spending by oil companies. These underlying factors, combined with new
technology, greater efficiencies and higher dayrates, resulted in stronger
pricing and higher market share. The Asian and North American markets were
significant growth areas. Measurement & Systems operating income increased $25
million, or 20%, to $149 million despite adverse exchange rate effects.
Automated Test Equipment, Electronic Transactions and activity in Asia all
contributed to this increase. Metering activities in Europe declined due to
increased competition and severe price erosion.

In 1996, operating income of the Oilfield Services segment increased $359
million, or 57%, to $986 million. Growth was due to underlying economic factors,
strong demand and the price increases of oil and gas. Other factors included the
success of new and existing services such as PLATFORM EXPRESS and LWD
technologies. In addition, the strong contribution of Geco-Prakla, which
returned to profitability, had a significant impact. Measurement & Systems
operating income declined by 18%, to $124 million, because of steep declines at
Automated Test Equipment and Electricity & Gas Metering. A temporary weakness in
the semiconductor industry was due to soft market conditions and reduced capital
spending by our customers leading to postponements of product deliveries.
Turbulence in the electricity metering markets was due to strong pricing
pressures and lower volumes in the European markets.

In 1995, operating income of the Oilfield Services segment increased $132
million, or 27%, to $627 million. Higher activity outside North America and an
improved Geco-Prakla were partially offset by lower results in the US. The only
setback was the deterioration in the results of Geco-Prakla, where operational
problems in the last quarter offset significant improvements during the first
nine months. Severe weather in the Gulf of Mexico and West of Shetland in the
North Sea region, lower profitability on non-exclusive proprietary survey sales
and losses resulting from technical and operational problems in Transition Zone
activities were the major factors. Measurement & Systems operating income
increased by 25%, to $151 million, because of strong growth at Electronic
Transactions and Automated Test Equipment, and acquisitions.

Currency Risks
- --------------

Refer to "Translation of Non-US Currencies" in the NOTES TO CONSOLIDATED
FINANCIAL STATEMENTS for a description of the Company's policy on currency
hedging. There are no material unhedged assets, liabilities or commitments which
are denominated in other than a business' functional currency.

While changes in exchange rates do affect revenue, especially in the 


                                       17
<PAGE>
Measurement & Systems segment, they also affect costs. Generally speaking, the
Company is currency neutral. For example, a 5% change in average exchange rates
of OECD currencies would have had no material effect on consolidated revenue and
net income.

In general, when the US dollar weakens against other currencies, consolidated
revenue increases with usually no material effect on net income. This is
principally because the fall-through incremental margin in Measurement & Systems
offsets the higher Oilfield Services non-US dollar denominated expenses.

The Company's businesses operate principally in US dollars, most European
currencies and most South American currencies.

Income Tax Expense
- ------------------

In 1996, with increasing profitability and a strong outlook in the US, the
Company recognized 50% of the US income tax benefit related to its US
subsidiary's tax loss carryforward and all temporary differences. This resulted
in a credit of $360 million. Refer to NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
under "Income Tax Expense" on page 33 for additional information.

In 1997, the Company recognized the remaining 50%, which resulted in no
significant reduction of income tax expense.

Research & Engineering
- ----------------------

Expenditures were as follows:                        (Stated in millions)
                                        1997          1996          1995
                                        ----          ----          ----
Oilfield Services                       $320          $294          $279
Measurement & Systems                    166           158           148
Other                                      -             1             1
                                        ----          ----          ----
                                        $486          $453          $428
                                        ====          ====          ====

Interest Expense
- ----------------

Interest expense increased $15 million in 1997, following a $10-million decrease
in 1996. The increase in 1997 was due to significantly higher debt balances,
only partially offset by lower average borrowing rates.

The decrease in 1996 was due to lower average rates which more than offset
higher average debt outstanding.

                                       18
<PAGE>
 
Liquidity
- ---------

A key measure of financial position is liquidity, defined as cash plus
short-term and long-term investments, less debt. The following table summarizes
the Company's change in consolidated liquidity for each of the past three years:

                                                     (Stated in millions)
                                        1997          1996        1995
                                        ----          ----        ----
Net income                            $  1,296      $   851     $   649
Depreciation &
  amortization                             973          885         820
Other                                       (5)          (1)        (14)
                                      --------      -------     --------
                                         2,264        1,735       1,455
Increase in working
  capital requirements                    (496)        (273)       (238)
Fixed asset additions                   (1,496)      (1,158)       (939)
Dividends paid                            (371)        (367)       (327)
Other                                      201          132          (6)
                                      --------      -------     -------
                                           102           69         (55)
Proceeds from
  employee stock  plans                    146          180          74
Purchase of shares
  for Treasury                              --           --         (41)
Businesses acquired                        (17)        (139)       (217)
Net proceeds on sale
    of drilling rigs(1)                    174           --          --
Other                                      (57)         (66)         23
                                      --------      -------     -------
Net increase (decrease)
 in liquidity                         $    348      $    44     $  (216)
                                      ========      =======     =======
Liquidity-end of period               $    580      $   232     $   188
                                      ========      =======     =======

(1) In September, the Sedco Forex semisubmersibles Drillstar and Sedco Explorer
were sold to a newly formed venture in which Schlumberger has a 25% interest.
The rigs will be operated by Sedco Forex under bareboat charters. The gain on
sale has been deferred and will be amortized over a six-year period. This
transaction had no significant effect on 1997 results and will have no
significant impact on future results of operations.

In 1997, 1996 and 1995, the significant increase in working capital requirements
followed the higher business activity. The major increases were in the working
capital components of receivables and inventory. Higher fixed asset additions
reflected the significant increase in Oilfield Services activities.

The current consolidated liquidity level, combined with liquidity expected from
operations, should satisfy future business requirements.

Common Stock, Market Prices and Dividends Declared per Share
- ------------------------------------------------------------

Quarterly high and low prices for the Company's Common Stock as reported by the
New York Stock Exchange (composite transactions), together with dividends
declared per share in each quarter of 1997 and 1996, were:

                                       19
<PAGE>
 
                              Price Range
                         -----------------------  Dividends
                          High          Low       Declared
                         -------      -------     ---------
1997 (1)
QUARTERS
    First              $ 58 3/16      $49         $ 0.1875
    Second               63  1/4       51 1/8       0.1875
    Third                84  5/8       62 3/8       0.1875
    Fourth               94 7/16       72 3/8       0.1875
                                               
1996 (1)                                       
QUARTERS                                       
    First              $ 40  5/16     $32 11/16   $ 0.1875
    Second               45 11/16      40  1/16     0.1875
    Third                44  9/16      39 11/16     0.1875
    Fourth               54  1/8       42  1/8      0.1875

(1) Restated for the 2-for-1 stock split on June 2, 1997.

The number of holders of record of the Common Stock of the Company at December
31, 1997, was approximately 22,000. There are no legal restrictions on the
payment of dividends or ownership or voting of such shares, except as to shares
held in the Company's treasury. United States stockholders are not subject to
any Netherlands Antilles withholding or other Netherlands Antilles taxes
attributable to ownership of such shares.

Environmental Matters
- ---------------------

The Company and its subsidiaries comply with government laws and regulations and
responsible management practices for the protection of the environment. The
Consolidated Balance Sheet includes accruals for the estimated future costs
associated with certain environmental remediation activities related to the past
use or disposal of hazardous materials. Substantially all such costs relate to
divested operations and to facilities or locations that are no longer in
operation. Due to a number of uncertainties, including uncertainty of timing,
the scope of remediation, future technology, regulatory changes and other
factors, it is possible that the ultimate remediation costs may exceed the
amounts estimated. However, in the opinion of management, such additional costs
are not expected to be material relative to consolidated liquidity, financial
position or future results of operations. Consistent with the Company's
commitment to protection of the environment, safety and employee health,
additional costs, including capital expenditures, are incurred related to
current operations.

Outcome of Litigation
- ---------------------

In the Contingencies note of the Notes to Consolidated Financial Statements for
the years 1994 to 1996, reference was made to a case involving the validity of a
1988 settlement and release in connection with an incidental business venture.
On December 11, 1997, the Texas Supreme Court rendered a final judgment in favor
of Schlumberger which upheld the original 1993 lower court's decision which
exonerated the Company from any liability in this case. As indicated in prior
years, no provision had been made in the Consolidated Financial Statements and
consequently this judgment had no effect on the consolidated results of
operations.

In the 1995 and 1996 Contingencies note of the Notes to Consolidated Financial
Statements, reference was made to a case involving a contract dispute in Johnson
County, Texas. A settlement was reached with the plaintiff in the fourth quarter
of 1997 which had no significant effect on the consolidated results of
operations.

                                       20
<PAGE>
 
New Accounting Standard
- -----------------------

During 1996, The Financial Accounting Standards Board issued Statement of
Financial Accounting Standards (SFAS) 128, "Earnings per Share." Since the
standard is effective with the fourth quarter of 1997, the Company has adopted
this standard. All prior periods have been restated.

Year 2000 Issue
- ---------------

The "Year 2000 Issue" is the inability of computers and computing technology to
recognize correctly the Year 2000 date change. The problem results from a
long-standing practice by programmers to save memory space by denoting Years
using just two digits instead of four digits. Thus, systems that are not Year
2000 compliant may be unable to read dates correctly after the Year 1999 and can
return incorrect or unpredictable results. This could have a significant effect
on the Company's business/financial systems as well as products and services, if
not corrected.

Schlumberger recognizes that the "Year 2000 Issue" creates a significant
uncertainty to its business and that Year 2000 compliance to safeguard
operations and minimize business disruption is a key business obligation.

A "Millennium Compliance Program" is under way throughout the Company to ensure
that all mission-critical business systems, products and services both in the US
and internationally in all business segments are Year 2000 compliant. The
Company is also actively working with suppliers, contractors and alliance
partners to promote Year 2000 compliance.

In 1994, the Company decided to upgrade its main business systems with compliant
programs such as SAP R/3 and QAD MFG/PRO***. In 1997, a complete inventory of
all business systems took place throughout the Company resulting in an
accelerated implementation of compliant programs and in the initial
establishment of contracts with third-party vendors for the repair, testing and
implementation of nearly 19,500 programs.

While all business sectors will be required to maintain deadlines and priorities
on the business applications mentioned above, the main focus in 1998 will be on
products and services. The assessment of existing products and services in each
business segment is incomplete and hence the Company cannot as yet make a final
conclusion as to whether all products and services will be Year 2000 compliant.
However, the Company does believe, based on the assessments completed to date,
that mission-critical Year 2000 problems can be corrected. The introduction of
Year 2000 Project Teams throughout the Company has been accelerated. Deadlines
and objectives for the completion of assessment and repair of noncompliant
mission-critical products and services by the end of 1998 have been established.
The main focus in 1999 will be on testing and implementation of repaired
programs, products and services.

Efforts will be made to protect the Company from being adversely impacted in the
Year 2000 by entities not affiliated with the Company (suppliers, financial
institutions, etc.). The Company will promote knowledge sharing with customers,
suppliers and alliance partners to attempt the most efficient Year 2000
solutions.

The Company expects that the total cost of addressing this issue over the next
two years will be $40 million - $60 million, but the assessments are not yet
complete. This cost estimate does not include the normal upgrading of business
and financial systems which would be Year 2000 compliant. Costs incurred in
connection with Year 2000 compliance will be treated as period costs and
expensed as incurred.

                                       21
<PAGE>
 
Item 7A Quantitative & Qualitative Disclosure About Market Risk
        -------------------------------------------------------

The Company does not believe it has a material exposure to market risk. The
Company manages the exposure to interest rate changes by using a mix of debt
maturities and variable and fixed rate debt together with interest rate swaps,
where appropriate, to fix or lower borrowing costs. With regard to foreign
currency fluctuations, the Company enters into various contracts, which change
in value as foreign exchange rates change, to protect the value of external and
intercompany transactions in foreign currencies. The Company does not enter into
foreign currency or interest rate transactions for speculative purposes.

                                       22
<PAGE>
 
Item 8         Financial Statements and Supplementary Data
               ------------------------------------------- 

CONSOLIDATED STATEMENT OF INCOME
- --------------------------------

                                 (Stated in thousands except per share amounts)
Year Ended December 31,                1997            1996           1995
                                       ----            ----           ----
Revenue

  Operating                          $10,647,590   $ 8,956,150   $ 7,621,694
  Interest and other income              106,823        69,515        91,536
                                     -----------   -----------   -----------

                                      10,754,413     9,025,665     7,713,230
                                     -----------   -----------   -----------

Expenses

  Cost of goods sold
    and services                       7,836,952     6,835,444     5,804,157
  Research & engineering                 486,205       452,608       427,848
  Marketing                              307,036       301,304       283,790
  General                                369,030       355,392       345,441
  Interest                                86,843        72,020        81,620
  Unusual items                             --         333,091          --
  Taxes on income                        372,650      (175,677)      121,217
                                     -----------   -----------   -----------
                                       9,458,716     8,174,182     7,064,073
                                     -----------   -----------   -----------
Net Income                           $ 1,295,697   $   851,483   $   649,157
                                     ===========   ===========   ===========

Basic earnings per share (1)         $      2.62   $      1.74   $      1.33
                                     ===========   ===========   ===========

Diluted earnings per share (1) (2)   $      2.52   $      1.70   $      1.32
                                     ===========   ===========   ===========

Average shares outstanding (1)           495,215       490,041       484,748

Average shares outstanding
    assuming dilution (1) (2)            514,345       500,498       487,864


(1)  Restated for the 2-for-1 stock split on June 2, 1997.
(2)  The calculation of diluted earnings per share assumes that all stock
     options and warrants are exercised at the beginning of the period and the
     proceeds used to purchase shares at the average market price for the
     period.

See Notes to Consolidated Financial Statements
Schlumberger Limited (Schlumberger N.V., Incorporated in the Netherlands
Antilles) and Subsidiary Companies.

                                       23
<PAGE>
 
Item 8         Financial Statements and Supplementary Data (cont.)
               -------------------------------------------------- 

CONSOLIDATED BALANCE SHEET
- --------------------------

<TABLE> 
<CAPTION> 

                                                           (Stated in thousands)
December 31,                                                1997           1996
                                                          --------       --------
ASSETS

Current Assets
<S>                                                   <C>             <C> 
  Cash and short-term investments                      $  1,761,077    $  1,358,948
 
  Receivables less allowance for doubtful accounts
   (1997 $60,535; 1996 $58,981)                           2,819,898       2,260,091
  Inventories                                             1,094,070         938,974
  Deferred taxes on income                                  175,927         222,456
  Other current assets                                      220,248         262,148
                                                       ------------    ------------
                                                          6,071,220       5,042,617
Long-Term Investments, held to maturity                     742,751         323,717
Fixed Assets less accumulated depreciation                3,768,639       3,358,581
Excess of Investment Over Net Assets
  of Companies Purchased less amortization                1,167,624       1,225,335
Deferred Taxes on Income                                    202,774         203,983
Other Assets                                                143,723         170,818
                                                       ------------    ------------
                                                       $ 12,096,731    $ 10,325,051
                                                       ============    ============

LIABILITIES AND STOCKHOLDERS' EQUITY
Current Liabilities
  Accounts payable and accrued liabilities             $  2,297,370    $  2,200,161
  Estimated liability for taxes on income                   384,167         367,562
  Bank loans                                                750,303         743,018
  Dividend payable                                           93,821          92,842
  Long-term debt due within one year                        104,237          70,827
                                                       ------------    ------------
                                                          3,629,898       3,474,410
Long-Term Debt                                            1,069,056         637,203
Postretirement Benefits                                     396,559         383,129
Other Liabilities                                           306,294         203,929
                                                       ------------    ------------
                                                          5,401,807       4,698,671
                                                       ------------    ------------
Stockholders' Equity
  Common stock                                              931,096         818,803
  Income retained for use in the business                 8,061,731       7,137,744
  Treasury stock at cost                                 (2,249,765)     (2,315,946)
  Translation adjustment                                    (48,138)        (14,221)
                                                       ------------    ------------
                                                          6,694,924       5,626,380
                                                       -------------   -------------
                                                        $12,096,731    $ 10,325,051
                                                       =============   =============
</TABLE> 


See Notes to Consolidated Financial Statements
Schlumberger Limited (Schlumberger N.V., Incorporated in the Netherlands
Antilles) and Subsidiary Companies.

                                       24
<PAGE>
 
Item 8         Financial Statements and Supplementary Data (cont.)
- ------         --------------------------------------------------
<TABLE> 
<CAPTION> 
CONSOLIDATED STATEMENT OF CASH FLOWS                                   
- ------------------------------------                                   (Stated in thousands)                     
Year Ended December 31,                                1997             1996                1995
                                                    -----------       -----------        -----------
<S>                                             <C>                 <C>                 <C> 
Cash flows from operating activities:                                               
  Net income                                        $ 1,295,697       $   851,483        $   649,157
  Adjustments to reconcile net income                                               
    to net cash provided by operating activities:                                   
    Depreciation and amortization                       972,539           885,198            820,196
    Earnings of companies carried at equity,                                        
      less dividends received                                                       
       (1997 $2,474; 1996 $1,911; 1995 $1,000)           (2,021)            5,212             (3,791)
    Provision for losses on accounts receivable          24,007            27,036             20,306
    Other adjustments                                    (2,778)           (4,613)            (3,562)
    Change in operating assets and liabilities:                                     
      Increase in receivables                          (642,772)         (319,448)          (136,312)
      Increase in inventories                          (184,388)         (144,774)           (99,334)
      Decrease (increase) in deferred taxes              46,529           (26,226)                --
      Increase (decrease) in accounts payable                                         
       and accrued liabilities                          132,452           161,463             (9,243)
      Increase (decrease) in estimated liability                                      
       for taxes on income                               37,150            39,851             (3,684)
      Other - net                                        31,578           (73,044)           (39,389)
                                                      ---------         ---------          --------- 
  NET CASH PROVIDED BY OPERATING ACTIVITIES           1,707,993         1,402,138          1,194,344
                                                      ---------         ---------          --------- 
Cash flows from investing activities:                                               
  Purchases of fixed assets                          (1,495,980)       (1,157,957)          (938,847)
  Sales/retirements of fixed assets & other              97,004            98,584             26,936
  Payment for purchase of businesses                    (13,730)         (115,262)          (200,805)
  Net proceeds on sale of drilling rigs                 174,000                --                 --
  (Increase) decrease in investments                   (846,194)         (218,914)           129,165
  Decrease in other assets                               24,852             1,050             42,496
                                                      ---------         ---------          --------- 
  NET CASH USED IN INVESTING ACTIVITIES              (2,060,048)       (1,392,499)          (941,055)
                                                      ---------         ---------          --------- 
Cash flows from financing activities:                                               
  Dividends paid                                       (370,771)         (366,791)          (327,189)               
  Proceeds from employee stock purchase plan             50,055            38,807             36,159
  Proceeds from exercise of stock options                95,495           141,299             37,518
  Purchase of shares for Treasury                          --                --              (40,552)
  Proceeds from issuance of long-term debt              815,579           195,009            486,518
  Payments of principal on long-term debt              (309,685)         (165,742)          (287,455)
  Net increase (decrease) in short-term debt             50,831           212,523           (143,444)
                                                      ---------         ---------          --------- 
NET CASH PROVIDED BY (USED IN) FINANCING ACTIVITIES     331,504            55,105           (238,445)
                                                      ---------         ---------          --------- 
Net  (decrease) increase in cash                        (20,551)           64,744             14,844
Cash, beginning of year                                 137,259            72,515             57,671
                                                      ---------         ---------          --------- 
CASH, END OF YEAR                                     $ 116,708         $ 137,259          $  72,515
                                                      =========         =========          =========
</TABLE> 

See Notes to Consolidated Financial Statements
Schlumberger Limited (Schlumberger N.V., Incorporated in the Netherlands
Antilles) and Subsidiary Companies.

                                       25
<PAGE>
 
Item 8         Financial Statements and Supplementary Data (cont.)
- ------         --------------------------------------------------

CONSOLIDATED STATEMENT OF STOCKHOLDERS' EQUITY
- ----------------------------------------------
<TABLE> 
<CAPTION> 
                                  Common  Stock                   (Dollar amounts in thousands) 
                    --------------------------------------------- 
                         Issued                  In Treasury                            Income        
                    -------------------      --------------------                 Retained for 
                                                                     Translation    Use in the
                     Shares(1)   Amount      Shares(1)      Amount     Adjustment     Business
                     --------    ------      ---------      ------     ----------     --------
<S>               <C>           <C>        <C>            <C>         <C>           <C> 
Balance,
 Jan.1, 1995       614,802,904  $ 695,946   130,338,980   $2,406,321   $  (57,104)   $6,350,433
Translation
  adjustment                                                               44,298
Sales to optionees 
  less shares
  exchanged                         5,223    (1,742,660)     (32,296)
Purchases for
  Treasury                                    1,380,000       40,552
Employee stock
  purchase plan      1,449,588     36,159
Net income                                                                              649,157
Dividends declared
  ($0.7125 per 
  share)                                                                               (345,518)
                  ------------  ---------   -----------   ----------   ----------    ---------- 
Balance,
 Dec. 31, 1995     616,252,492    737,328   129,976,320    2,414,577      (12,806)    6,654,072
 Translation
   adjustment                                                              (1,415)
 Sales to optionees 
   less  shares 
   exchanged                       42,668    (5,314,696)     (98,631)
 Employee stock
   purchase plan     1,483,494     38,807
 Net income                                                                             851,483
 Dividends declared
   ($0.75 per share)                                                                   (367,811)
                  ------------  ---------   -----------   ----------   ----------    ---------- 
Balance,
 Dec. 31, 1996     617,735,986    818,803   124,661,624    2,315,946      (14,221)    7,137,744
 Translation
   adjustment                                                             (33,917)
 Sales to optionees 
   less shares 
   exchanged                       29,314    (3,323,223)     (61,743)
 Employee stock
   purchase plan     1,399,623     50,055
 Net income                                                                           1,295,697
 IVS acquisition                   16,324      (238,812)      (4,438)
 Tax benefit on
 stock options                     16,600
 Dividends declared
   ($0.75 per share)                                                                   (371,710)
                  ------------  ---------   -----------   ----------   ----------    ---------- 
Balance,
 Dec. 31, 1997     619,135,609  $ 931,096   121,099,589   $2,249,765   $  (48,138)   $8,061,731
                 =============  =========   ===========   ==========   ==========    ==========
</TABLE> 

(1) Restated for the 2-for-1 stock split on June 2, 1997.
See Notes to Consolidated Financial Statements Schlumberger Limited
(Schlumberger N.V., Incorporated in the Netherlands Antilles) and Subsidiary
Companies.

                                       26
<PAGE>
 
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
- ------------------------------------------

Summary of Accounting Policies
- ------------------------------

The Consolidated Financial Statements of Schlumberger Limited and its
subsidiaries have been prepared in accordance with accounting principles
generally accepted in the United States.

Principles of Consolidation
- ---------------------------

The Consolidated Financial Statements include the accounts of majority-owned
subsidiaries. Significant 20% - 50% owned companies are carried on the equity
method and classified in Other Assets. The Company's pro rata share of after-tax
earnings is included in Interest and other income. Equity in undistributed
earnings of all 50% owned companies at December 31, 1997, was not material.

Use of Estimates
- ----------------

The preparation of financial statements in conformity with generally accepted
accounting principles requires management to make estimates and assumptions that
affect the reported amounts of assets and liabilities, disclosure of contingent
assets and liabilities at the date of the financial statements and the reported
amounts of revenues and expenses during the reporting period. While actual
results could differ from these estimates, management believes that the
estimates are reasonable.

Revenue Recognition
- -------------------

Generally, revenue is recognized after services are rendered and products are
shipped.

Translation of Non-US Currencies
- --------------------------------

All assets and liabilities recorded in functional currencies other than US
dollars are translated at current exchange rates. The resulting adjustments are
charged or credited directly to the Stockholders' Equity section of the
Consolidated Balance Sheet. Revenue and expenses are translated at the
weighted-average exchange rates for the period. All realized and unrealized
transaction gains and losses are included in income in the period in which they
occur. The Company policy is to hedge against unrealized gains and losses on a
monthly basis. Included in the 1997 results were transaction losses of $2
million, compared with a gain of $10 million in 1996 and a loss of $2 million in
1995.

Currency exchange contracts are entered into as a hedge against the effect of
future settlement of assets and liabilities denominated in other than the
functional currency of the individual businesses. Gains or losses on the
contracts are recognized when the currency exchange rates fluctuate, and the
resulting charge or credit offsets the unrealized currency gains or losses on
those assets and liabilities. At December 31, 1997, contracts and options were
outstanding to purchase the US dollar equivalent of $402 million in various
foreign currencies. These contracts mature on various dates in 1998, 1999 and
2000.

Investments
- -----------

Both short-term and long-term investments held to maturity are stated at cost
plus accrued interest, which approximates market, and comprise primarily
Eurodollar time deposits, certificates of deposit and commercial paper,
Euronotes and Eurobonds, substantially all denominated in US dollars.
Substantially all the investments designated as held to maturity that were
purchased and sold during the year had original maturities of less than three
months. Short-term investments that are designated as trading are stated at
market. The unrealized gain on such securities at December 31, 1997, was not
significant.

For purposes of the Consolidated Statement of Cash Flows, the Company does not
consider short-term investments to be cash equivalents as they generally have
original maturities in excess of three months. Short-term investments at
December 31, 1997 and 1996, were $1.6 billion and $1.2 billion, respectively.

                                       27
<PAGE>
 
Inventories
- -----------

Inventories are stated principally at average or standard cost, which
approximates average cost, or at market, if lower. Inventory consists primarily
of materials and supplies.

Excess of Investment Over Net Assets of Companies Purchased
- -----------------------------------------------------------

Cost in excess of net assets of purchased companies is amortized on a
straight-line basis over periods ranging from 5 to 40 years. Accumulated
amortization was $343 million and $287 million at December 31, 1997 and 1996,
respectively.

Fixed Assets and Depreciation
- -----------------------------

Fixed assets are stated at cost less accumulated depreciation, which is provided
for by charges to income over the estimated useful lives of the assets by the
straight-line method. Fixed assets include the manufacturing cost (average cost)
of oilfield technical equipment manufactured by subsidiaries of the Company.
Expenditures for renewals, replacements and betterments are capitalized.
Maintenance and repairs are charged to operating expenses as incurred. Upon sale
or other disposition, the applicable amounts of asset cost and accumulated
depreciation are removed from the accounts and the net amount, less proceeds
from disposal, is charged or credited to income.

Taxes on Income
- ---------------

The Company and its subsidiaries compute taxes on income in accordance with the
tax rules and regulations of the many taxing authorities where the income is
earned. The income tax rates imposed by these taxing authorities vary
substantially. Taxable income may differ from pretax income for financial
accounting purposes. To the extent that differences are due to revenue or
expense items reported in one period for tax purposes and in another period for
financial accounting purposes, an appropriate provision for deferred income
taxes is made.

Approximately $3.4 billion of consolidated income retained for use in the
business at December 31, 1997 represented undistributed earnings of consolidated
subsidiaries and the Company's pro rata share of 20% - 50% owned companies. No
provision is made for deferred income taxes on those earnings considered to be
indefinitely reinvested or earnings that would not be taxed when remitted.

Tax credits and other allowances are credited to current income tax expense on
the flow-through method of accounting.

Earnings per share
- ------------------

As required by SFAS 128, the Company must report both basic and diluted earnings
per share. Basic earnings per share is computed by dividing net income by the
average number of common shares outstanding during the year. Diluted earnings
per share is computed by dividing net income by the average number of common
shares outstanding assuming dilution, the calculation of which assumes that all
stock options and warrants are exercised at the beginning of the period and the
proceeds used, by the Company, to purchase shares at the average market price
for the period. The following is a reconciliation from basic earnings per share
to diluted earnings per share for each of the last three years:

                                       28
<PAGE>
 
                     (Stated in thousands except per share amounts)

                                     Average   
                          Net        Shares     Earnings
                        Income     Outstanding  per share
                        ------     -----------  ---------
1997
Basic                 $1,295,697      495,215   $    2.62
Effect of dilution:
        Options                        10,992
        Warrants                        8,138
                      ----------   ----------
Diluted               $1,295,697      514,345   $    2.52
                      ==========   ==========   =========

1996
Basic                 $  851,483      490,041   $    1.74
Effect of dilution:
        Options                         6,142
        Warrants                        4,315
                      ----------   ----------
Diluted               $  851,483      500,498   $    1.70
                      ==========   ==========   =========


1995
Basic                 $  649,157      484,748   $    1.33
Effect of dilution:
        Options                         2,315
        Warrants                          801
                      ----------   ----------
Diluted               $  649,157      487,864   $    1.32
                      ==========   ==========   =========


Research & Engineering
- ----------------------

All research and engineering expenditures are expensed as incurred, including
costs relating to patents or rights that may result from such expenditures.

Unusual Items
- -------------

In 1996, the Company announced a charge of $300 million after tax in the third
quarter related primarily to the Electricity & Gas and Geco-Prakla Land and
Transition Zone businesses. The after-tax charge of $300 million included
pre-tax charges of $112 million for severance and termination costs, other
facilities' closure costs of $39 million, goodwill write-offs of $122 million,
and other asset impairments/charges of $60 million.

The severance and termination costs relate to less than 5% of the worldwide
workforce primarily in Europe and pertain to both manufacturing and operating
personnel in about 30 locations. Most of the other facilities' closure costs
relate to the write-down of buildings, equipment and other assets to net
realizable value.

In addition, the Company recorded a charge of $58 million after tax, including a
loss on the divestiture of the remaining defense-related activity, certain asset
impairments and other charges. The amount is classified in Cost of goods sold
and services ($47 million) and Taxes on income ($11 million).

                                       29
<PAGE>
 
As of December 31, 1997, $65 million of the severance and termination had been
spent. The remainder should be spent within the next 18 months.

Acquisitions
- ------------

During 1997, subsidiaries of the Company acquired Interactive Video Systems,
Inc., a metrology solutions provider for the front-end semiconductor fabrication
equipment market, and S.A. Holditch and Associates, Inc., a petroleum and
geoscience consulting services company. These acquisitions were accounted for as
purchases. Costs in excess of net assets acquired were $38 million which are
being amortized on a straight-line basis over periods of 5 and 15 years,
respectively.

During 1996, subsidiaries of the Company acquired Solaic, SA (on December 31,
1996), a magnetic and smart card manufacturer; an 80% interest in Printer, a
magnetic stripe card manufacturer; Oilphase Sampling Services Ltd., a reservoir
fluid sampling company; The Production Analyst* and OilField Manager* software
products from OGCI Software, Inc.; Germann, a turnkey gasoline station provider;
Gueant, a gas dispenser service company; and a 33% equity interest in DAP
Technologies Limited, a developer and manufacturer of rugged handheld computer
products. The purchase prices were $75 million, $9 million, $7 million, $8
million, $8 million, $7 million and $4 million, respectively. These acquisitions
were accounted for as purchases. Costs in excess of net assets acquired were $91
million which are being amortized on a straight-line basis over periods between
7 and 25 years.

Investments
- -----------

The Consolidated Balance Sheet reflects the Company's investment portfolio
separated between current and long-term, based on maturity. Except for $117
million of investments which are considered trading at December 31, 1997
(1996-$111 million), it is the Company's intent to hold the investments until
maturity.

Long-term investments mature in 1999-$97 million, in 2000-$205 million and $441
million thereafter.

At December 31, 1997, there were interest rate swap arrangements outstanding
having a total principal amount of $80 million. These arrangements mature at
various dates in 1998, and interest rates are adjusted quarterly. Interest rate
swap arrangements had no material effect on consolidated interest income.

Fixed Assets
- ------------

A summary of fixed assets follows:

                                       (Stated in millions)
December 31,                      1997              1996
                                 -------           -------
Land                           $      75        $       71
Buildings &
  improvements                     1,009             1,040
Machinery and
  equipment                        9,126             8,467
                                 -------           -------
Total cost                        10,210             9,578
Less accumulated
  depreciation                     6,441             6,219
                                 -------           -------
                                 $ 3,769           $ 3,359
                                 =======           =======

Estimated useful lives of Buildings & improvements range from 5 to 50 years and
of Machinery and equipment from 2 to 25 years.

                                       30
<PAGE>
 
Long-Term Debt
- --------------

A summary of long-term debt by currency follows:

                                       (Stated in millions)
December 31,                       1997              1996
                                  ------            ------
US dollar                        $   323             $ 195
French franc                         186                 -
UK pound                             122               137
German mark                          118               185
Japanese yen                         111               101
Italian lira                          93                 7
Canadian dollar                       68                 -
Other                                 48                12
                                  ------             -----
                                  $1,069             $ 637
                                  ======             =====

Long-term debt is at variable rates; substantially all of the debt is at rates
up to 8%. Such rates are reset every six months or sooner. Accordingly, the
carrying value of long-term debt at December 31, 1997, approximates the
aggregate fair value.

Long-term debt at December 31, 1997, is due as follows: $372 million in 1999,
$266 million in 2000, $197 million in 2001, $146 million in 2002 and $88 million
thereafter.

At December 31, 1997, there were no interest rate swap arrangements outstanding
related to debt. At times, interest rate swap arrangements are entered into to
adjust non-US dollar denominated debt and interest rates into US dollars.
Interest rate swap arrangements had no impact in 1997 and 1996. The exposure, in
the event of nonperformance by the other parties to the arrangements, would not
be significant.

Lines of Credit
- ---------------

At December 31, 1997, the Company's principal US subsidiary had an available
unused Revolving Credit Agreement with a group of banks. The Agreement provided
that the subsidiary may borrow up to $500 million until December 1998 at money
market-based rates. In addition, at December 31, 1997, the Company and its
subsidiaries had available unused lines of credit of approximately $830 million.

Capital Stock
- -------------

The Company is authorized to issue 1,000,000,000 shares of Common Stock, par
value $0.01 per share, of which 498,036,020 and 493,074,362 (restated for the
2-for-1 stock split on June 2, 1997) shares were outstanding on December 31,
1997 and 1996, respectively. The Company is also authorized to issue 200,000,000
shares of cumulative Preferred Stock, par value $0.01 per share, which may be
issued in series with terms and conditions determined by the Board of Directors.
No shares of Preferred Stock have been issued. Holders of Common Stock and
Preferred Stock are entitled to one vote for each share of stock held.

In January 1993, Schlumberger acquired the remaining 50% interest in the Dowell
Schlumberger group of companies. The purchase price included a warrant, expiring
in 7.5 years and valued at $100 million, to purchase (restated for the 2-for-1
stock split on June 2, 1997) 15 million shares of Schlumberger Limited Common
Stock at an exercise price of $29.975 per share. The warrant is fully vested and
nontransferable.

                                       31
<PAGE>
 
Stock Compensation Plans
- ------------------------

As of December 31, 1997, the Company has two types of stock-based compensation
plans, which are described below. The Company applies APB Opinion 25 and related
Interpretations in accounting for its plans. Accordingly, no compensation cost
has been recognized for its stock option plans and its stock purchase plan. Had
compensation cost for the Company's stock-based plans been determined based on
the fair value at the grant dates for awards under those plans, consistent with
the method of SFAS 123, the Company's net income and earnings per share would
have been the pro forma amounts indicated below:

                                  (Stated in millions except per share amounts)
                                          1997          1996          1995
                                          ----          ----          ----
Net income
  As reported                            $1,296        $ 851          $ 649
  Pro forma                              $1,233        $ 809          $ 641

Basic earnings per share(1)
  As reported                            $ 2.62        $1.74          $1.33
  Pro forma                              $ 2.49        $1.65          $1.32

Diluted earnings per share(1)
  As reported                            $ 2.52        $1.70          $1.32
  Pro forma                              $ 2.40        $1.62          $1.31

(1) Restated for the 2-for-1 stock split on June 2, 1997.

As required by SFAS 123, the above pro forma data reflect the effect of stock
option grants and the employee stock purchase plan during 1997, 1996 and 1995.

Stock Option Plans
- ------------------

During 1997, 1996, 1995 and in prior years, officers and key employees were
granted stock options under the Company's stock option plans. The exercise price
of each option equals the market price of the Company's stock on the date of
grant; an option's maximum term is ten years, and options generally vest in 20%
increments over five years.

As required by SFAS 123, the fair value of each grant is estimated on the date
of grant using the multiple option Black-Scholes option-pricing model with the
following weighted-average assumptions used for 1997, 1996 and 1995: dividend of
$0.75; expected volatility of 21% for 1997 grants and 20% for 1996 and 1995
grants; risk-free interest rates for the 1997 grant to officers of 6.19% and
5.80% - 6.77% for the 1997 grants to all other employees; risk-free interest
rates for 1996 grants of 5.38% - 6.36% for officers and 5.09% - 6.01% for all
other employees; risk-free interest rates for 1995 grants of 5.85% - 7.88% for
officers and 5.70% - 7.66% for all other employees; and expected option lives of
7.27 years for officers and 5.09 years for other employees for 1997 grants and
8.4 years for officers and 5.39 years for other employees for 1996 and 1995
grants.

A summary of the status of the Company's stock option plans as of December 31,
1997, 1996 and 1995, and changes during the years ending on those dates is
presented below:

                                       32
<PAGE>
 
<TABLE> 
<CAPTION> 

                                      1997(1)             1996(1)             1995(1)
                          ----------------------  -------------------   -----------------
                                       Weighted-             Weighted-           Weighted-
                                       Average               Average             Average 
                                       Exercise              Exercise            Exercise
Fixed Options                 Shares     Price     Shares     Price     Shares    Price    
- -------------                 ------     -----     ------     -----     ------    -----
<S>                     <C>             <C>     <C>           <C>     <C>         <C> 
Outstanding at            
  beginning of year       24,396,796    $32.50  22,140,960    $29.00  23,121,698    $28.00
Granted                    6,157,271    $84.50   8,262,000    $39.50   1,507,400    $31.00
Exercised                 (3,405,622)   $28.75  (5,516,484)   $27.00  (1,795,838)   $22.00
Forfeited                   (529,140)   $36.52    (489,680)   $32.00    (692,300)   $30.50
                          ----------            ----------            ---------- 
Outstanding at end of      
  year                    26,619,305    $45.21  24,396,796    $32.50  22,140,960    $29.00 
                          ==========           ===========            ==========
Options  exercisable at   
  year-end                10,786,864             9,927,816            12,518,540 
Weighted-average fair
  value of options granted             
  during the year             $26.11                $10.53                 $8.70 
</TABLE> 

(1) Restated for the 2-for-1 stock split on June 2, 1997.

The following table summarizes information concerning currently outstanding and
exercisable options by three ranges of exercise prices at December 31, 1997:

<TABLE> 
<CAPTION> 
                                 OPTIONS OUTSTANDING                  OPTIONS EXERCISABLE
                                 -------------------                  -------------------
                                    Weighted-
                     Number         Average        Weighted-      Number         Weighted-
                     Outstanding    Remaining      Average        Exercisable    Average
Range of Exercise    As of          Contractual    Exercise       As of          Exercise
Prices               12/31/97       Life           Price          12/31/97       Price
- -------------------- -------------- -------------- -------------- -------------- --------------
<S>                  <C>            <C>            <C>            <C>            <C> 
$4.2100 -- $31.4690    8,858,775        5.71         $28.5219       6,238,135      $28.9303
$31.5320 -- $42.2820  11,120,229        6.87         $36.6741       4,428,729      $34.2084
$46.8130 -- $90.5000   6,640,301        9.63         $81.5801        120,000       $46.8130
                      ----------                                   ---------
$4.2100 -- $90.5000   26,619,305        7.17         $45.2138      10,786,864      $31.2719
                      ==========                                   ==========
</TABLE> 

Employee Stock Purchase Plan
- ----------------------------

Under the Schlumberger Discounted Stock Purchase Plan, the Company is authorized
to issue up to 10,012,245 shares of Common Stock to its employees. On January
21, 1998, the Board, subject to stockholder approval, amended the Plan to
increase the aggregate number of shares available for purchase to 22,012,245.
Under the terms of the Plan, employees can choose each year to have up to 10% of
their annual earnings withheld to purchase the Company's Common Stock. The
purchase price of the stock is 85% of the lower of its beginning or end of the
plan year market price. Under the Plan, the Company sold 1,399,623, 1,483,494
and 1,449,588 shares to employees in 1997, 1996 and 1995, respectively.
Compensation cost has been computed for the fair value of the employees'
purchase rights, which was estimated using the Black-Scholes model with the
following assumptions for 1997, 1996 and 1995: dividend of $0.75; expected life
of one year; expected volatility of 28% for 1997 and 20% for 1996 and 1995; and
risk-free interest rates of 5.64% for 1997, 5.71% for 1996 and 5.61% for 1995.
The weighted-average fair value of those purchase rights granted in 1997, 1996
and 1995, was $17.845, $9.73 and $7.21, respectively.

Income Tax Expense
- ------------------

In the third quarter of 1996, with increasing profitability and strong outlook
in the US, the Company recognized 50% of the US income tax benefit related to
its US subsidiary's tax loss carryforward and all temporary differences. This
resulted in a credit of $360 million.

In the second quarter of 1997, the Company released the remaining valuation
allowance related to its US subsidiary's tax loss carryforward and all temporary
differences. The resulting reduction in income tax expense was not significant.

The Company has net deductible temporary differences of $940 million at December
31, 1997. Significant temporary differences pertain to postretirement medical
benefits, fixed assets, employee benefits and inventory.

                                       33
<PAGE>
 


The Company and its subsidiaries operate in over 100 taxing jurisdictions where
statutory tax rates generally vary from 0% - 50%.

The effective tax rates in 1997, 1996 (before the unusual items) and 1995, were
22%, 20% and 16%, respectively. The variations from the US statutory federal tax
rate (35%) and the Company's effective tax rates were due to several factors,
including the effect of the US operating loss carryforward and a substantial
proportion of operations in countries where taxation on income is lower than in
the US.

The Company's 1997 income tax expense includes a deferred tax benefit of $17
million. In 1996 and 1995, due to the Company's US consolidated group net
operating loss carryforward, the deferred tax provision excluding the effect of
the 1996 unusual items, was less than $5 million. The remaining component of
income tax expense was the current provision in each year.

Leases and Lease Commitments
- ----------------------------

Total rental expense was $285 million in 1997, $232 million in 1996 and $206
million in 1995. Future minimum rental commitments under noncancelable leases
for years ending December 31 are: 1998 $157 million; 1999 $142 million; 2000
$119 million; 2001 $97 million; and 2002 $82 million. For the ensuing three
five-year periods, these commitments decrease from $149 million to $4 million.
The minimum rentals over the remaining terms of the leases aggregate to $26
million.

Included in the rental expenses and future minimum rental commitments above are
the Sedco Forex semisubmersibles Drillstar and Sedco Explorer. In September
1997, these rigs were sold to a newly formed venture in which the Company has a
25% interest. The rigs will be operated by Sedco Forex under bareboat charters.

Contingencies
- -------------

The Company and its subsidiaries comply with government laws and regulations and
responsible management practices for the protection of the environment. The
Consolidated Balance Sheet includes accruals for the estimated future costs
associated with certain environmental remediation activities related to the past
use or disposal of hazardous materials. Substantially all such costs relate to
divested operations and to facilities or locations that are no longer in
operation. Due to a number of uncertainties, including uncertainty of timing,
the scope of remediation, future technology, regulatory changes and other
factors, it is possible that the ultimate remediation costs may exceed the
amounts estimated. However, in the opinion of management, such additional costs
are not expected to be material relative to consolidated liquidity, financial
position or future results of operations.

In addition, the Company and its subsidiaries are party to various other legal
proceedings. Although the ultimate disposition of these proceedings is not
presently determinable, in the opinion of the Company any liability that might
ensue would not be material in relation to the Consolidated Financial
Statements.

Segment Information
- -------------------

The Company's business comprises three segments: Oilfield Services, Measurement
& Systems and Omnes. Services and products are described in more detail on pages
1 and 2 in this 10-K report.

Oilfield Services and Measurement & Systems are reportable segments. Financial
information for the years ended December 31, 1997, 1996 and 1995, by industry
segment and by geographic area, is as follows:

                                       34
<PAGE>
 
<TABLE> 
<CAPTION> 
                                                                   (Stated in millions)
                                    Oilfield     Measurement       Adjust.    Consol-
                                    Services     & Systems         & Elim.     idated
                                    --------     ---------         -------    -------
<S>                                <C>          <C>               <C>         <C> 
INDUSTRY SEGMENT 1997
Operating revenue
  Customers                          $ 7,663       $ 2,985       $     -     $ 10,648
  Inter-segment transfers                  -             1            (1)           -
                                     -------       -------       -------     -------- 
                                     $ 7,663       $ 2,986       $    (1)    $ 10,648
                                     =======       =======       =======     ========
Operating income                     $ 1,557       $   149       $   (58)    $  1,648
                                     -------       -------       -------               
Interest expense                                                                  (87)
Interest and other income                                                         107
                                                                             --------
Income before taxes                                                          $  1,668
                                                                             ========
Depreciation expense                 $   788       $   114       $     3     $    905
                                     -------       -------       -------     -------- 
Fixed asset additions                $ 1,353       $   140       $     3     $  1,496
                                     -------       -------       -------     -------- 
At December 31
  Identifiable assets                $ 7,101       $ 2,481       $   (99)    $  9,483
  Corporate assets                                                              2,614
                                                                             --------
  Total assets                                                               $ 12,097
                                                                             ========
INDUSTRY SEGMENT 1996
Operating revenue
  Customers                          $ 6,129       $ 2,827      $      -     $  8,956
  Inter-segment transfers                  -             7            (7)           -
                                     -------       -------       -------     -------- 
                                     $ 6,129       $ 2,834       $    (7)    $  8,956
                                     =======       =======       =======     ========
Operating income                     $   986       $   124       $   (52)    $  1,058
                                     -------       -------       -------              
Interest expense                                                                  (72)
Interest and other income                                                          70
Unusual items                                                                    (380)
                                                                             --------
Income before taxes                                                          $    676
                                                                             ========
Depreciation expense                 $   700       $   111       $     8     $    819
                                     -------       -------       -------     --------  
Fixed asset additions                $ 1,018       $   131       $     9     $  1,158
                                     -------       -------       -------     --------  
At December 31
  Identifiable assets                $ 5,961       $ 2,518       $   (41)    $  8,438
  Corporate assets                                                              1,887
                                                                             --------
  Total assets                                                               $ 10,325
                                                                             ========

</TABLE> 

                                       35
<PAGE>
 
<TABLE> 
<CAPTION> 
                                                                 (Stated in millions)
                                    Oilfield     Measurement     Adjust.      Consol-
                                    Services     & Systems       & Elim.       idated
                                    --------     ---------       -------      -------
<S>                                <C>          <C>             <C>           <C> 
INDUSTRY SEGMENT 1995
Operating revenue
  Customers                           $4,867     $   2,755       $     -      $ 7,622
  Inter-segment transfers                  1             4            (5)           -
                                      ------     ---------       -------      ------- 
                                      $4,868     $   2,759        $   (5)     $ 7,622
                                      ======     =========        ======      =======
Operating income                      $  627     $     151        $  (17)     $   761
                                      ------     ---------        ------      
Interest expense                                                                 (82)
Interest and other income
  less other charges -$1                                                           91
                                                                             --------
Income before taxes                                                          $    770
                                                                             ========
Depreciation expense                  $  650    $      104        $    6     $    760
                                      ------     ---------        ------      ------- 
Fixed asset additions                 $  800    $      122        $   17     $    939
                                      ------     ---------        ------      ------- 
At December 31
  Identifiable assets                 $5,192    $    2,213        $  (29)     $ 7,376
  Corporate assets                                                              1,534
                                                                              -------
Total assets                                                                  $ 8,910
                                                                              =======
</TABLE> 

Transfers between segments and geographic areas are for the most part made at
regular prices available to unaffiliated customers.

Certain Oilfield Services segment fixed assets are manufactured within that
segment.

During the years ended December 31, 1997, 1996 and 1995, neither sales to any
government nor sales to any single customer exceeded 10% of consolidated
operating revenue.

Corporate assets largely comprise short-term and long-term investments.

                                       36
<PAGE>
 
<TABLE> 
<CAPTION> 
                                                                                    (Stated in millions)
                             Western Hemisphere          Eastern Hemisphere
                          ------------------------     -----------------------               
                                                                                      Adjust.  Consol-
                              US       Other             Europe        Other         & Elim.   idated
                           --------   -------           -------       -------        -------   -------
<S>                       <C>       <C>                 <C>        <C>              <C>       <C> 
GEOGRAPHIC AREA 1997
Operating revenue
  Customers               $ 2,696    $ 1,508            $ 3,093    $ 3,351           $    -    $ 10,648
  Inter-area transfers        580         14                338         46              (978)         -
                          -------    -------             -------    -------            ------   -------- 
                          $ 3,276    $ 1,522            $ 3,431    $ 3,397           $  (978)  $ 10,648
                          =======    =======             =======    =======            ======   ======== 
Operating income          $   374    $   266            $   349    $   816           $  (157)  $  1,648
Interest expense                                                                                    (87)
Interest and other income                                                                           107
                                                                                                --------
Income before taxes                                                                            $  1,668
                                                                                                ========
At December 31
  Identifiable assets     $ 2,713    $ 1,329            $ 2,705    $ 2,746           $   (10)  $  9,483
  Corporate assets                                                                                2,614
                                                                                               --------
  Total assets                                                                                 $ 12,097
                                                                                               ========
GEOGRAPHIC AREA 1996
Operating revenue
  Customers               $ 2,103    $ 1,150            $ 3,065    $ 2,638            $    -   $  8,956
  Inter-area transfers        443          7                169         35              (654)         -
                          -------    -------              -------   ------            --------  --------
                          $ 2,546    $ 1,157            $ 3,234    $ 2,673            $ (654)  $  8,956
                          =======    =======              =======   ======            ========  ========
Operating income          $   195    $   166            $   243    $   546            $  (92)  $  1,058
Interest expense                                                                                    (72)
Interest and other income                                                                            70
Unusual items                                                                                      (380)
                                                                                                  -------
Income before taxes                                                                            $    676
                                                                                                  =======
At December 31
  Identifiable assets     $ 2,249    $   885            $ 3,300    $ 2,069            $  (65)  $  8,438
  Corporate assets                                                                                1,887
                                                                                                  -------
  Total assets                                                                                 $ 10,325
                                                                                                  =======
</TABLE> 

                                       37
<PAGE>
 
<TABLE> 
<CAPTION> 
                                                                  (Stated in millions)
                          Western Hemisphere   Eastern Hemisphere
                           -----------------  --------------------
                                                                     Adjust.   Consol-
                              US       Other   Europe        Other   & Elim.   idated
                           --------   -------  -------      -------  -------   -------
<S>                     <C>          <C>      <C>         <C>      <C>        <C> 
GEOGRAPHIC AREA 1995
Operating revenue
  Customers                $1,826     $  905    $2,779     $2,112    $   -     $7,622
  Inter-area transfers        358         17       149         30     (554)         -
                           ------     ------    ------     ------    -----     ------
                           $2,184     $  922    $2,928     $2,142    $(554)    $7,622
                           ======     ======    ======     ======    =====     ======
Operating income           $  130     $  135    $  170     $  367    $ (41)    $  761
Interest expense                                                                  (82)
Interest and other income
  less other charges - $1                                                          91
                                                                               ------
Income before taxes                                                            $  770
                                                                               ======
At December 31
  Identifiable assets      $1,748     $  720    $2,894     $2,025    $ (11)    $7,376
  Corporate assets                                                              1,534
                                                                               ------
  Total assets                                                                 $8,910
                                                                               ======
</TABLE> 

                                       38
<PAGE>
 
Pension and Other Benefit Plans
- -------------------------------

US Pension Plans
- ----------------

The Company and its US subsidiary sponsor several defined benefit pension plans
that cover substantially all employees. The benefits are based on years of
service and compensation on a career-average pay basis. These plans are
substantially fully funded with a trustee in respect to past and current
service. Charges to expense are based upon costs computed by independent
actuaries. The funding policy is to contribute annually amounts that are
allowable for federal income tax purposes. These contributions are intended to
provide for benefits earned to date and those expected to be earned in the
future. The assumed discount rate, compensation increases and return on plan
assets used to determine pension expense in 1997 were 8%, 4.5% and 8.5%,
respectively. The assumed discount rate in 1996 and 1995 was 7.5%.

Net pension cost in the US for 1997, 1996 and 1995, included the following
components:

                                                     (Stated in millions)
                                        1997          1996          1995
                                      ------        ------        ------
Service cost - benefits
  earned during the period               $29           $27           $26
Interest cost on projected
  benefit obligation                      55            50            46
Expected return on
  plan assets (actual
  return: 1997 $165;
  1996 $94; 1995 $137)                   (57)          (52)          (47)
Amortization of
  transition asset                        (2)           (2)           (2)
Amortization of prior
  service cost/other                       3             4             4
                                        ----          ----           ---
  Net pension cost                       $28           $27           $27
                                        ====          ====           ===

Effective January 1, 1996, the Company and its subsidiaries amended their
pension plans to improve retirement benefits for current employees. The funded
status at December 31, 1995, reflects the amendment.

Effective January 1, 1998, the Company and its subsidiaries amended their
pension plans to improve retirement benefits for retired employees. The funded
status at December 31, 1997, reflects the amendment.

                                       39
<PAGE>
 
The funded status of the plans at December 31, 1997 and 1996, was as follows:

                                       (Stated in millions)
                                        1997          1996

                                      ------        ------
Actuarial present 
  value of obligations:
  Vested benefit obligation           $  750         $ 639
                                         ===           ===
  Accumulated benefit
    obligation                        $  754         $ 641
                                         ===           ===
  Projected benefit obligation        $  824         $ 700
Plan assets at market value              913           771
                                       -----         -----
Excess of assets over projected
  benefit obligation                      89            71
Unrecognized net gain                   (204)         (155)
Unrecognized prior service cost           55            34
Unrecognized net asset
  at transition date                      (5)           (7)
                                       ------        ------
Pension liability                     $  (65)        $ (57)
                                        =====         ======

Assumed discount rate and rate of compensation increases used to determine the
projected benefit obligations were 7.5% and 4.5%, respectively, in 1997, and 8%
and 4.5%, respectively, in 1996; the expected long-term rate of return on plan
assets was 8.5% for both years. Plan assets at December 31, 1997, consisted of
common stocks ($524 million), cash or cash equivalents ($58 million), fixed
income investments ($253 million) and other investments ($78 million). Less than
1% of the plan assets at December 31, 1997 represented Schlumberger Limited
Common Stock.










Non-US Pension Plans
- --------------------

Outside of the US, subsidiaries of the Company sponsor several defined benefit
and defined contribution plans that cover substantially all employees who are
not covered by statutory plans. For defined benefit plans, charges to expense
are based upon costs computed by independent actuaries. These plans are
substantially fully funded with trustees in respect to past and current service.
For all defined benefit plans, pension expense was $15 million, $16 million and
$13 million in 1997, 1996 and 1995, respectively. The only significant defined
benefit plan is in the UK.

The assumed discount rate, compensation increases and return on plan assets used
to determine pension expense in 1997 were 8%, 5% and 8.5%, respectively. The
assumed discount rate in 1996 and 1995 was 7.5%.

                                       40
<PAGE>
 
Net pension cost in the UK plan for 1997, 1996 and 1995 (translated into US
dollars at the average exchange rate for the periods), included the following
components:

                                                     (Stated in millions)
                                        1997          1996          1995
                                      ------        ------        ------
Service cost - benefits
  earned during the period              $ 14           $12           $10
Interest cost on projected
  benefit obligation                      14             9             9
Expected return on
  plan assets (actual
  return: 1997 $26;
  1996 $36; 1995 $43                     (24)          (18)          (16)
Amortization of transition
  asset and other                         (4)           (3)           (2)
                                       -----         -----          ----
  Net pension cost                     $   -         $   -          $  1
                                       =====         =====          ====

The funded status of the plan (translated into US dollars at year-end exchange
rates) was as follows:

                                       (Stated in millions)
                                        1997          1996

                                       ------        ------
Actuarial present value 
of obligations:

  Vested benefit obligation             $200          $132
                                         ===           ===
  Accumulated benefit
    obligation                          $200          $132
                                         ===           ===
  Projected benefit obligation          $227          $150
Plan assets at market value              339           276
                                         ---           ---
Excess of assets over
  projected benefit obligation           112           126
Unrecognized net gain                    (92)         (111)
Unrecognized prior service cost            3             4
Unrecognized net asset
  at transition date                      (4)           (4)
                                          --          ----
Pension asset                            $19         $  15
                                          ==          ====

The assumed discount rate and rate of compensation increases used to determine
the projected benefit obligation were 7.5% and 5%, respectively, in 1997 and 8%
and 5%, respectively, in 1996; the expected long-term rate of return on plan
assets was 8.5% in 1997 and 1996. Plan assets consisted of common stocks ($268
million), cash or cash equivalents ($10 million) and fixed income investments
($61 million). None of the plan assets represented Schlumberger Limited Common
Stock.

For defined contribution plans, funding and cost are generally based upon a
predetermined percentage of employee compensation. Charges to expense in 1997,
1996 and 1995, were $23 million, $15 million and $14 million, respectively.

                                       41
<PAGE>
 
Other Deferred benefits
- -----------------------

In addition to providing pension benefits, the Company and its subsidiaries have
other deferred benefit programs. Expense for these programs was $123 million,
$93 million and $80 million in 1997, 1996 and 1995, respectively.

Health Care Benefits
- --------------------

The Company and its US subsidiary provide health care benefits for certain
active employees. The cost of providing these benefits is recognized as expense
when incurred and aggregated $33 million, $38 million and $37 million in 1997,
1996 and 1995, respectively. Outside the US, such benefits are mostly provided
through government-sponsored programs.

Postretirement Benefits Other Than Pensions
- -------------------------------------------

The Company and its US subsidiary provide certain health care benefits to former
employees who have retired under the US pension plans.

The principal actuarial assumptions used to measure costs were a discount rate
of 8% in 1997 and 7.5% in 1996 and 1995. The overall medical cost trend rate
assumption beginning December 31, 1996, was 9% graded to 5% over the next six
years and 5% thereafter. Previously the overall assumption had been 10% graded
to 6% over the next six years and 6% thereafter.

Net periodic postretirement benefit cost in the US for 1997, 1996 and 1995,
included the following components:

                                                     (Stated in millions)
                                        1997          1996          1995
                                       ------        ------        ------
Service cost - benefits
  earned during the period              $  9          $ 13          $ 12
Interest cost on accumulated
  postretirement benefit
    obligation                            21            26            25
Amortization of unrecognized
  net gain and other                      (5)            -             -
                                        ----          ----          ----
                                        $ 25          $ 39          $ 37
                                        ====          ====          ====

The funded status at December 31, 1997 and 1996, was as follows:

                                       (Stated in millions)
                                        1997          1996
                                      ------        ------
Accumulated postretirement 
  benefit obligation:
    Retirees                            $149          $143
    Fully eligible                        50            44
    Actives                              106            99
                                        ----          ----
                                        $305          $286
Unrecognized net gain                     87            92
Unrecognized prior service                 5             5
                                        ----          ----
Postretirement benefit
  liability at December 31              $397          $383
                                        ====          ====

                                       42
<PAGE>
 
The assumed discount rate used to determine the accumulated postretirement
benefit obligation was 7.5% for 1997 and 8% for 1996.

If the assumed medical cost trend rate was increased by one percentage point,
health care cost in 1997 would have been $30 million, and the accumulated
postretirement benefit obligation would have been $355 million at December 31,
1997.

Supplementary Information

Operating revenue and related cost of goods sold and services comprised the
following:

                                                     (Stated in millions)
Year ended
  December 31,                          1997          1996          1995
                                    --------      --------      --------
Operating revenue
  Sales                             $  2,664       $ 2,428       $ 2,372
  Services                             7,984         6,528         5,250
                                    --------       -------       -------
                                    $ 10,648       $ 8,956       $ 7,622
                                    ========       =======       =======
Direct operating costs
  Goods sold                        $  1,822       $ 1,704       $ 1,645
  Services                             6,015         5,131         4,159
                                    --------       -------       -------
                                    $  7,837       $ 6,835       $ 5,804
                                    ========       =======       =======

Cash paid for interest and income taxes was as follows:

                                                     (Stated in millions)
Year ended
  December 31,                          1997          1996          1995
                                      ------        ------        ------
Interest                               $  87         $  73         $  81
Income taxes                           $ 271         $ 179         $ 132

Accounts payable and accrued liabilities are summarized as follows:

                                                    (Stated in millions)
December 31,                                          1997          1996
                                                    ------        ------
Payroll, vacation and
  employee benefits                                $   541        $   488
Trade                                                  870            712
Taxes, other than income                               175            182
Other                                                  711            818
                                                   -------        -------
                                                   $ 2,297        $ 2,200
                                                   =======        =======

The caption "Interest and other income" includes interest income, principally
from short-term and long-term investments, of $99 million, $73 million and $89
million for 1997, 1996 and 1995, respectively.

*       Mark of Schlumberger
**      SAP and R/3 are trademarks of SAP AG
***     QAD and MFG/PRO are trademarks of QAD

                                       43
<PAGE>
 
To the Board of Directors and Stockholders
of Schlumberger Limited

In our opinion, the accompanying consolidated balance sheet and the related
consolidated statements of income, of stockholders' equity and of cash flows
present fairly, in all material respects, the financial position of Schlumberger
Limited and its subsidiaries at December 31, 1997 and 1996, and the results of
their operations and their cash flows for each of the three years in the period
ended December 31, 1997, in conformity with generally accepted accounting
principles. These financial statements are the responsibility of the Company's
management; our responsibility is to express an opinion on these financial
statements based on our audits. We conducted our audits of these statements in
accordance with generally accepted auditing standards which require that we plan
and perform the audit to obtain reasonable assurance about whether the financial
statements are free of material misstatement. An audit includes examining, on a
test basis, evidence supporting the amounts and disclosures in the financial
statements, assessing the accounting principles used and significant estimates
made by management, and evaluating the overall financial statement presentation.
We believe that our audits provide a reasonable basis for the opinion expressed
above.

/s/ Price Waterhouse LLP
- ------------------------
Price Waterhouse LLP
New York, New York
January 21, 1998

                                       44
<PAGE>
 
QUARTERLY RESULTS (UNAUDITED)
- -----------------------------

The following table summarizes results for each of the four quarters for the
years ended December 31, 1997 and 1996. Gross profit equals operating revenue
less cost of goods sold and services.

<TABLE> 
<CAPTION> 
                                            (Stated in millions except per share amounts)
                                  Operating                         Earnings per share(1)
                         --------------------------               ------------------------
                                                       Net
                           Revenue    Gross Profit    Income         Basic        Diluted
                         ----------  -------------- ----------     ---------      ---------
<S>                     <C>          <C>          <C>              <C>          <C> 
Quarters-1997
    First                 $   2,402  $     619     $    260         $  0.53       $   0.51
    Second                    2,602        673          306            0.62           0.60
    Third                     2,736        735          357            0.72           0.69
    Fourth                    2,908        784          373            0.75           0.72
                           --------   --------      -------         -------       --------
                           $ 10,648   $  2,811      $ 1,296         $  2.62       $   2.52
                           ========   ========      =======         =======       ======== 
Quarters-1996
    First                  $  2,028   $    478      $   171         $  0.35       $   0.35
    Second                    2,151        519          196            0.40           0.39
    Third                     2,262        510          229            0.47           0.46
    Fourth                    2,515        614          255            0.52           0.50
                           --------   --------      -------         -------       --------
                           $  8,956   $  2,121      $   851         $  1.74       $   1.70
                           ========   ========      =======         =======       ======== 
</TABLE> 

(1) Restated for the 2-for-1 stock split on June 2, 1997.

Item 9         Disagreements on Accounting and Financial Disclosures
- ------         -----------------------------------------------------

NONE

                                       45
<PAGE>
 
PART III
- --------

Item 10 Directors and Executive Officers of the Registrant
- ------- --------------------------------------------------

See Part I (pages 5 and 6) for Item 10 information regarding Executive Officers
of the Registrant. The information with respect to the remaining portion of Item
10 is set forth in the first section under the caption, "Election of Directors",
in the Proxy Statement dated March 6, 1998 for the April 8, 1998 Annual General
Meeting, and is incorporated by reference.

Item 11 Executive Compensation
- ------- ----------------------

The information set forth under "EXECUTIVE COMPENSATION" (other than that set
forth under the subcaptions "Corporate Performance Graph" and "Compensation
Committee Report on Executive Compensation") in the Company's Proxy Statement
dated March 6, 1998 is incorporated by reference.

Item 12 Security Ownership of Certain Beneficial Owners and Management
- ------- --------------------------------------------------------------

The information with respect to Item 12 is set forth in the Proxy Statement
Statement dated March 6, 1998 under the caption, "Security Ownership of Certain
Beneficial Owners and Management" and such information is incorporated herein by
reference.

Item 13 Certain Relationships and Related Transactions
- ------- ----------------------------------------------

The information with respect to Item 13 is set forth in the last paragraph of
the section headed, "Board and Committees", in the Company's Proxy Statement
dated Statement dated March 6, 1998 and such information is incorporated herein
by reference.

                                       46
<PAGE>
 
PART IV
- -------

Item 14 Exhibits, Financial Statement Schedules and Reports on Form 8-K
- ------- ---------------------------------------------------------------

        The following documents are filed as part of this report:       Page(s)

               (1)    Financial Statements

                      Consolidated Statement of
                      Income for the three years
                      ended December 31, 1997                             23

                      Consolidated Balance Sheet
                      at December 31, 1997 and
                      1996                                                24

                      Consolidated Statement of Cash
                      Flows for the three years ended
                      December 31, 1997                                   25

                      Consolidated Statement of
                      Stockholders' Equity for the
                      three years ended December 31, 1997                 26

                      Notes to Consolidated Financial
                      Statements                                   27 through 43

                      Report of Independent
                      Accountants                                         44

                      Selected Quarterly Financial
                      Data (Unaudited)                                    45

Financial statements of 20% - 50% owned companies accounted for under the equity
method and unconsolidated subsidiaries have been omitted because they do not
meet the materiality tests for assets of income.

               (2)    Financial Statement Schedules

                      Not required.

               (3)    The following Exhibits are filed:
                      --------------------------------

                      Deed of Incorporation as last
                      amended on April 29, 1997                  Exhibit 3

                      By-Laws as last amended on
                      October 20, 1993                           Exhibit 3

                      Schlumberger 1994 Stock Option Plan,
                      as amended on January 5, 1995*             Exhibit 10(a)

                                       47
<PAGE>
 
                      Schlumberger Limited Supplementary
                      Benefit Plan, as amended on January 1,
                      1995*                                      Exhibit 10(b)

                      Schlumberger 1989 Stock Incentive
                      Plan, as amended*                          Exhibit 10(c)

                      Schlumberger 1979 Stock
                      Incentive Plan, as amended*                Exhibit 10(d)

                      Schlumberger 1979 Incentive
                      Stock Option Plan, as amended*             Exhibit 10(e)

                      Schlumberger Restoration Savings Plan*     Exhibit 10(f)
                      Schlumberger 1998 Stock Option Plan*       Exhibit 10(g)

               *Compensatory plan required to be filed as an exhibit.

                      Subsidiaries                               Exhibit 21

                      Consent of Independent
                      Accountants                                Exhibit 23

                      Powers of Attorney                         Exhibit 24

                      (a) Don E. Ackerman - dated Jan. 21,1998
                      (b) D. Euan Baird - dated Jan. 21,1998 
                      (c) John Deutch - dated 12/18/1997
                      (d) Denys Henderson - dated Jan. 21,1998
                      (e) Andre Levy-Lang - dated Jan. 21,1998
                      (f) William T. McCormick, Jr. - dated Jan. 21,1998
                      (g) Didier Primat - dated Jan. 21,1998
                      (h) Nicolas Seydoux - dated Jan. 21,1998
                      (i) Linda G. Stuntz - dated Jan. 21,1998
                      (j) Sven Ullring - dated Jan. 21,1998
                      (k) Yoshihiko Wakumoto - dated Jan. 21,1998

                      Additional Exhibit:
                      Form S-8 Undertakings                       Exhibit  99

        No reports on Form 8-K have been filed during the last quarter of the
        period covered by this report.

                                       48
<PAGE>
 
                                    SIGNATURES

Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange
Act of 1934, the Registrant has duly caused this report to be signed on its
behalf by the undersigned, thereunto duly authorized.

                        SCHLUMBERGER LIMITED

Date:  March 30, 1998   By: /s/ Arthur Lindenauer
                           --------------------------------
                           Arthur Lindenauer
                           Executive Vice President - Finance;
                           Chief Financial Officer and Chief Accounting Officer

Pursuant to the requirements of the Securities Exchange Act of 1934, this report
has been signed below by the following persons on behalf of the Registrant and
in the capacities and on the dates indicated.

               Name                                     Title
        --------------------                 -----------------------------
                                          
                 *                           Director, Chairman, President
        ---------------------                and Chief Executive Officer
        D. Euan Baird                        
                                          
        /s/ Arthur Lindenauer                Executive Vice President
        ---------------------                Finance; Chief Financial Officer
        Arthur Lindenauer                    and Chief Accounting Officer     
                                             
                                          
                 *                           Director
        ---------------------
        Don E. Ackerman                   
                                          
                 *                           Director
        ---------------------
        John Deutch                       
                                          
                 *                           Director
        ---------------------
        Denys Henderson                   
                                          
                 *                           Director
        ---------------------
        Andre Levy-Lang                   
                                          
                 *                           Director
        ---------------------
        William T. McCormick, Jr.         
                                          
                 *                           Director
        ---------------------
        Didier Primat

                                       49
<PAGE>
 
                            SIGNATURES (continued)

               Name                                 Title
        --------------------                 -----------------------------

                 *                                 Director
        --------------------                 
        Nicolas Seydoux

                 *                                 Director
        --------------------                 
        Linda G. Stuntz

                 *                                 Director
        --------------------                 
        Sven Ullring

                 *                                 Director
        --------------------                 
        Yoshihiko Wakumoto

        /s/ David S. Browning                       March 30, 1998
        ---------------------                 

        * By David S. Browning    Attorney-in-Fact

                                       50
<PAGE>
 
<TABLE> 
<CAPTION> 

               INDEX TO EXHIBITS                                Exhibit           Page
<S>                                                             <C>             <C> 
Deed of Incorporation as last amended
on April 28, 1997 incorporated by reference to
Form 10-Q for the perod ended March 31, 1997.                       3                -

By-Laws as last amended on October 20, 1993,
incorporated by reference to Exhibit 3 to
Form 10-K for 1993                                                  3                -

Schlumberger 1994 Stock Option Plan,
as amended, incorporated by reference to
Exhibit 10(a) to Form 10-K for year 1995                           10(a)             -

Schlumberger Limited Supplementary Benefit Plan,
as amended, on January 1, 1995,incorporated
by reference to Exhibit 10(b) to Form 10K for 1996                 10(b)             -

Schlumberger 1989 Stock Incentive Plan, as
amended, incorporated by reference to
Exhibit 10(c) to Form 10-K for year 1995                           10(c)             -

Schlumberger 1979 Stock Incentive Plan, as
amended, incorporated by reference to Exhibit
10(c) to Annual Report 10-K filed for year 1992                    10(d)             -

Schlumberger 1979 Incentive Stock Option Plan,
as amended, incorporated by reference to Exhibit
10(d) to Annual Report 10-K filed for year 1992                    10(e)             -

Schlumberger Restoration Savings Plan,
incorporated by reference to Exhibit 10(f) to
Form 10-K for year 1995                                            10(f)             -

Schlumberger 1998 Stock Option Plan                                10(g)           52

Subsidiaries                                                        21             59

Consent of Independent Accountants                                  23             60

Powers of Attorney dated January 21, 1998:                          24
        Don E. Ackerman             (a)                                            61
        D. Euan Baird               (b)                                            62
        John Deutch                 (c)                                            63
        Denys Henderson             (d)                                            64
        Andre Levy-Lang             (e)                                            65
        William T. McCormick, Jr.   (f)                                            66
        Didier Primat               (g)                                            67
        Nicolas Seydoux             (h)                                            68
        Linda G. Stuntz             (i)                                            69
        Sven Ullring                (j)                                            70
        Yoshihiko Wakumoto          (k)                                            71

Additional Exhibits:
        Form S-8 Undertakings                                       99             72
</TABLE> 

                                       51

<PAGE>
 
                                                                  EXHIBIT 10(g)
 
                      SCHLUMBERGER 1998 STOCK OPTION PLAN
                  (As Established Effective January 21, 1998)
 
1. PURPOSE OF THE PLAN
 
  This Stock Option Plan (the "Plan") is intended as an incentive to key
employees of Schlumberger Limited (the "Company") and its subsidiaries. Its
purposes are to retain employees with a high degree of training, experience
and ability, to attract new employees whose services are considered unusually
valuable, to encourage the sense of proprietorship of such persons and to
stimulate the active interest of such persons in the development and financial
success of the Company.
 
2. ADMINISTRATION OF THE PLAN
 
  (a) The Board of Directors shall appoint and maintain a Compensation
Committee (the "Committee") which shall consist of at least three (3) members
of the Board of Directors, none of whom is an officer or employee of the
Company, who shall serve at the pleasure of the Board. The Committee may from
time to time grant incentive stock options and non-qualified stock options
("Stock Options") under the Plan to the persons described in Section 3 hereof.
No member of such Committee shall be eligible to receive Stock Options under
this Plan during his or her tenure on the Committee. Members of the Committee
shall be subject to any additional restrictions necessary to satisfy the
definition of "Non-Employee Director" as set forth in Rule 16b-3 under the
United States Securities Exchange Act of 1934 (the "Act") as it may be amended
from time to time.
 
  (b) The Committee shall have full power and authority to interpret the
provisions of the Plan and supervise its administration. All decisions and
selections made by the Committee pursuant to the provisions of the Plan shall
be made by a majority of its members. Any decision reduced to writing and
signed by a majority of the members shall be fully effective as if adopted by
a majority at a meeting duly held. Subject to the provisions of the Plan, the
Committee shall have full and final authority to determine the persons to whom
Stock Options hereunder shall be granted, the number of shares to be covered
by each Stock Option except that no optionee may be granted options for more
than 1,000,000 shares during the life of the Plan, and whether such Stock
Option shall be designated an "incentive stock option" or a "non-qualified
stock option."
 
  (c) No member of the Committee shall be liable for anything done or omitted
to be done by him or by her or any other member of the Committee in connection
with the Plan, except for his or her own willful misconduct or as expressly
provided by statute.
 
  (d) If the exercise period of an outstanding Stock Option is continued
following a holder's termination of employment due to retirement as provided
in Section 5(c)(v), the Committee shall have the authority in its discretion to
cause such option to be forfeited in the event that such holder engages in
"detrimental activity" as described in Section 5(c)(v).
 
3. GRANTS OF STOCK OPTIONS
 
  (a) The persons eligible for participation in the Plan as recipients of
Stock Options shall include only employees of the Company or its subsidiary
corporations as defined in Section 424(f) of the Internal Revenue Code of 1986
as amended from time to time (the "Code"), and hereinafter referred to as
"subsidiaries" who are executive, administrative, professional or technical
personnel who have responsibilities affecting the management, direction,
development and financial success of the Company or its subsidiaries. No
Director of the Company who is not also an employee is eligible to participate
in the Plan, nor is any employee who owns directly or indirectly stock
possessing more than five percent (5%) of the total combined voting power or
value of all classes of stock of the Company or any subsidiary. An employee may
receive more than one grant of Stock Options at the Committee's discretion
including simultaneous grants of different forms of Stock Options.
 
 
                                      52
<PAGE>
 

  (b) The Committee in granting Stock Options hereunder shall have discretion
to determine the terms and conditions upon which such Stock Options may be
exercisable. Each grant of a Stock Option shall be confirmed by an Agreement
consistent with this Plan which shall be executed by the Company and by the
person to whom such Stock Option is granted. All such Agreements shall contain
a provision providing that the Stock Option shall not be exercisable unless
the recipient remains in the employment of the Company or a subsidiary for a
period of at least one (1) year from the date of any such Agreement, subject
to the right of the Company or subsidiary to terminate such employment.
 
  (c) For purposes of this Plan, employment with the Company shall include
employment with any subsidiary of the Company, and Stock Options granted under
this Plan shall not be affected by an employee's transfer of employment from
the Company to a subsidiary, from a subsidiary to the Company or between
subsidiaries.
 
  (d) The purchase price of the shares as to which a Stock Option is exercised
shall be paid in full at the time of the exercise subject to such rules,
procedures and restrictions as the Committee may prescribe from time to time:
(i) in cash or by certified check; (ii) by the delivery of shares of
Schlumberger Common Stock with a fair market value (as determined according to
Section 5(b) of the Plan) at the time of exercise equal to the total option
price; or (iii) by a combination of the methods described in (i) and (ii).
 
4. SHARES SUBJECT TO THE PLAN
 
  Subject to adjustment as provided in Section 8 hereof, there shall be
subject to the Plan 12,000,000 shares of Common Stock, par value $0.01 per
share, of the Company (the "Shares"). The Shares subject to the Plan shall
consist of authorized and unissued shares or previously issued shares reacquired
and held by the Company or any subsidiary. Should any Stock Option expire or be
terminated prior to its exercise in full and prior to the termination of the
Plan, the Shares theretofore subject to such Stock Option shall be available for
further grants under the Plan. Until termination of the Plan, the Company and/or
one or more subsidiaries shall at all times make available a sufficient number
of Shares to meet the requirements of the Plan. After termination of the Plan,
the number of Shares reserved for purposes of the Plan from time to time shall
be only such number of Shares as are issuable under then outstanding Stock
Options.
 
5. TERMS OF STOCK OPTIONS
 
  (a) Stock Options granted under this Plan which are designated as "incentive
stock options" may be granted with respect to any number of Shares, subject to
the limitation that the aggregate fair market value of such Shares (determined
in accordance with Section 5(b) of the Plan at the time the option is granted)
with respect to which such options are exercisable for the first time by an
employee during any one calendar year (under all such plans of the Company and
any subsidiary of the Company) shall not exceed $100,000. To the extent that
the aggregate fair market value of Shares with respect to which incentive
stock options (determined without regard to this subsection) are exercisable
for the first time by any employee during any calendar year (under all plans
of the employer corporation and its parent and subsidiary corporations)
exceeds $100,000, such options shall be treated as options which are not
incentive stock options. No Stock Options shall be granted pursuant to the Plan
after January 21, 2008.
 
                                      53
<PAGE>
 
 
  (b) The purchase price of each Share subject to a Stock Option shall be
determined by the Committee prior to granting a Stock Option. The Committee
shall set the purchase price for each Share at either the fair market value
(the "Fair Market Value") of each Share on the date the Stock Option is
granted, or at such other price as the Committee in its sole discretion shall
determine, but not less than one hundred percent (100%) of such Fair Market
Value. After it is granted, no Stock Option may be amended to decrease the
purchase price and no Stock Option may be granted in substitution for an
outstanding Stock Option with a purchase price lower than the purchase price
of an outstanding Stock Option. The Fair Market Value of a Share on a
particular date shall be deemed to be the mean between the highest and lowest
composite sales price per share of the Common Stock in the New York Stock
Exchange Composite Transactions Quotations, as reported for that date, or, if
there shall have been no such reported prices for that date, the reported mean
price on the last preceding date on which a composite sale or sales were
effected on one or more of the exchanges on which the Shares were traded shall
be the Fair Market value.
 
  (c)(i) Each Stock Option granted hereunder shall be exercisable in one or
more installments (annual or other) on such date or dates as the Committee may
in its sole discretion determine, and the terms of such exercise shall be set
forth in the Stock Option Agreement covering the grant of the option, provided
that no Stock Option may be exercised after the expiration of ten (10) years
from the date such option is granted.

  (ii) Except as provided in paragraph (e) below, the right to purchase Shares
shall be cumulative so that when the right to purchase any Shares has accrued
such Shares or any part thereof may be purchased at any time thereafter until
the expiration or termination of the Stock Option.
 
  (iii) At any time after the granting of any such Stock Option, the Committee
may accelerate the installment exercise dates (subject, however, to any
applicable limitations concerning options designated "incentive stock
options").
 
  (iv)(A) If the optionee's employment with the Company is terminated with the
consent of the Company and provided such employment is not terminated for
cause (of which the Committee shall be the sole judge), the Committee may
permit such Stock Option to be exercised by such optionee at any time during
the period of three (3) months after such termination, provided that such
option may be exercised before expiration and within such three-month period
only to the extent it was exercisable on the date of such termination.
 
  (B) In the event an optionee dies while in the employ of the Company or dies
after termination of employment but prior to the exercise in full of any Stock
Option which was exercisable on the date of such termination, such option may
be exercised before expiration of its term by the person or persons entitled
thereto under the optionee's will or the laws of descent and distribution
during the "Post-Death Exercise Period" (as hereinafter defined) to the extent
exercisable by the optionee at the date of death. The Post-Death Exercise
Period shall be a period commencing on the date of death and ending sixty (60)
months after the date of death (or, if earlier, the date of termination of
employment).
 
  (C) If the optionee's employment with the Company is terminated without the
consent of the Company for any reason other than the death of the optionee, or
if the optionee's employment with the Company is terminated for cause, his or
her rights under any then outstanding Stock Option shall terminate
immediately. The Committee shall be the sole judge of whether the optionee's
employment is terminated without the consent of the Company or for cause.
 
                                      54
<PAGE>
 
 
  (v)(A) If the optionee's employment with the Company is terminated due to
retirement (within the meaning of any prevailing pension plan in which such
optionee is a participant), such Stock Option shall be exercisable by such
optionee at any time during the period of sixty (60) months after such
termination or the remainder of the option period, whichever is less, provided
that such option may be exercised after such termination and before expiration
only to the extent that it is exercisable on the date of such termination.
 
  (B) In the event an optionee dies during such extended exercise period, such
Stock Option may be exercised by the person or persons entitled thereto under
the optionee's will or the laws of descent and distribution during the Post-
Death Exercise Period to the extent exercisable by the optionee at the date of
death and to the extent the term of the Stock Option has not expired within
such Post-Death Exercise Period.

    (c) Notwithstanding the foregoing, if at any time after termination due
  to retirement the optionee engages in "detrimental activity" (as
  hereinafter defined), the Committee in its discretion may cause the
  optionee's right to exercise such option to be forfeited. Such forfeiture
  may occur at any time subsequent to the date that is three (3) months after
  the optionee's termination of employment and prior to the actual delivery
  of shares pursuant to the exercise of such option. If an allegation of
  detrimental activity by an optionee is made to the Committee, the
  exercisability of the optionee's options will be suspended for up to two
  months to permit the investigation of such allegation. For purposes of this
  Section 5(c)(v), "detrimental activity" means activity that is determined
  by the Committee in its sole and absolute discretion to be detrimental to
  the interests of the Company or any of its subsidiaries, including but not
  limited to situations where such optionee: (1) divulges trade secrets of
  the company, proprietary data or other confidential information relating to
  the Company or to the business of the Company and any subsidiaries,
  (2) enters into employment with a competitor under circumstances suggesting
  that such optionee will be using unique or special knowledge gained as a
  Company employee to compete with the Company, (3) is convicted by a court
  of competent jurisdiction of any felony or of a crime involving moral
  turpitude, (4) uses information obtained during the course of his or her
  prior employment for his or her own purposes, such as for the solicitation
  of business, (5) is determined to have engaged (whether or not prior to
  termination due to retirement) in either gross misconduct or criminal
  activity harmful to the Company, or (6) takes any action that harms the
  business interests, reputation, or goodwill of the Company and/or its
  subsidiaries.
 
      (vi) Notwithstanding the other provisions of this paragraph (c), in
    no event may a Stock Option be exercised after the expiration of ten
    (10) years from the date such Stock Option is granted.
 
    (d) At the time of the grant of a Stock Option, the Committee may
  determine that the Shares covered by such option shall be restricted as to
  transferability. If so restricted, such Shares shall not be sold,
  transferred or disposed of in any manner, and such Shares shall not be
  pledged or otherwise hypothecated until the restriction expires by its
  terms. The circumstances under which any such restriction shall expire
  shall be determined by the Committee and shall be set forth in the Stock
  Option Agreement covering the grant of the option to purchase such Shares.
 
    (e) The Committee shall designate whether a Stock Option is to be an
  "incentive stock option" for purposes of Section 422 of the Code.
 
6. ASSIGNABILITY OF STOCK OPTIONS
 
  Stock Options granted under the Plan shall not be assignable or otherwise
transferable by the recipient except by will or the laws of descent and
distribution. Otherwise, Stock Options granted under this Plan shall be 
 
                                      55
<PAGE>
 
exercisable during the lifetime of the recipient (except as otherwise provided
in the Plan or the applicable Agreement for Stock Options other than "incentive
stock options") only by the recipient for his or her individual account, and no
purported assignment or transfer of such Stock Options thereunder, whether
voluntary or involuntary, by operation of law or otherwise, shall vest in the
purported assignee or transferee any interest or right therein whatsoever but
immediately upon any such purported assignment or transfer, or any attempt to
make the same, such Stock Options thereunder shall terminate and become of no
further effect.

7. TAXES
 
  The Committee may make such provisions and rules as it may deem appropriate
for the withholding of taxes in connection with any Stock Options granted
under the Plan. An optionee, subject to such rules as the Committee may
prescribe from time to time, may elect to satisfy all or any portion of the
tax required to be withheld by the Company in connection with the exercise of
such option by electing to have the Company withhold a number of shares having
a Fair Market Value on the date of exercise equal to or less than the amount
required to be withheld. An optionee's election pursuant to the preceding
sentence must be made on or before the date of exercise and must be
irrevocable.
 
8. REORGANIZATIONS AND RECAPITALIZATIONS OF THE COMPANY
 
    (a) The existence of this Plan and Stock Options granted hereunder shall
  not affect in any way the right or power of the Company or its stockholders
  to make or authorize any or all adjustments, recapitalizations,
  reorganizations or other changes in the Company's capital structure or its
  business, or any merger or consolidation of the Company, or any issue of
  bonds, debentures, preferred or prior preference stocks ahead of or
  affecting the Shares or the rights thereof, or the dissolution or
  liquidation of the Company, or any sale or transfer of all or any part of
  its assets or business, or any other corporate act or proceeding, whether
  of a similar character or otherwise.
 
    (b) Except as hereinafter provided, the issue by the Company of shares of
  stock of any class, or securities convertible into shares of stock of any
  class, for cash or property, or for labor or services, either upon direct
  sale or upon exercise of rights or warrants to subscribe therefor, or upon
  conversion of shares or obligations of the Company convertible into such
  shares or other securities, shall not affect, and no adjustment by reason
  thereof shall be made with respect to, the number of Shares subject to
  Stock Options granted hereunder.
 
    (c) The Shares with respect to which Stock Options may be granted
  hereunder are shares of the Common Stock of the Company as presently
  constituted, but if, and whenever, prior to the delivery by the Company or
  a subsidiary of all of the Shares which are subject to the Stock Options or
  rights granted hereunder, the Company shall effect a subdivision or
  consolidation of shares or other capital readjustments, the payment of a
  stock dividend or other increase or reduction of the number of shares of
  the Common Stock outstanding without receiving compensation therefor in
  money, services or property, the number of Shares subject to the Plan
  shall be proportionately adjusted and the number of Shares with respect to
  which Stock Options granted hereunder may thereafter be exercised shall:
 
      (i) in the event of an increase in the number of outstanding shares,
    be proportionately increased, and the cash consideration (if any)
    payable per Share shall be proportionately reduced; and

 
                                      56
<PAGE>
 
      (ii) in the event of a reduction in the number of outstanding shares,
    be proportionately reduced, and the cash consideration (if any) payable
    per Share shall be proportionately increased.
 
    (d) If the Company merges with one or more corporations, or consolidates
  with one or more corporations and the Company shall be the surviving
  corporation, thereafter, upon any exercise of Stock Options granted
  hereunder, the recipient shall, at no additional cost (other than the
  option price, if any) be entitled to receive (subject to any required
  action by stockholders) in lieu of the number of Shares as to which such
  Stock Options shall then be exercisable the number and class of shares of
  stock or other securities to which the recipient would have been entitled
  pursuant to the terms of the agreement of merger or consolidation, if
  immediately prior to such merger or consolidation the recipient had been
  the holder of record of the number of shares of Common Stock of the Company
  equal to the number of Shares as to which such Stock Options shall be
  exercisable. Upon any reorganization, merger or consolidation where the
  Company is not the surviving corporation or upon liquidation or dissolution
  of the Company, all outstanding Stock Options shall, unless provisions are
  made in connection with such reorganization, merger or consolidation for
  the assumption of such Stock Options, be canceled by the Company as of the
  effective date of any such reorganization, merger or consolidation, or of
  any dissolution or liquidation of the Company, by giving notice to each
  holder thereof or his or her personal representative of its intention to do
  so and by permitting the exercise during the thirty-day period next
  preceding such effective date of all Stock Options which are outstanding as
  of such date, whether or not otherwise exercisable.
 
9. REGISTRATION UNDER SECURITIES ACT OF 1933 AND EXCHANGE LISTING
 
  It is intended that the Stock Options and Shares covered by the Plan will be
registered under the Securities Act of 1933, as amended. At the time any
Shares are issued or transferred to satisfy the exercise of a Stock Option
granted under the Plan, such Shares will have been listed (or listed subject
to notice of issuance) on the New York Stock Exchange.
 
10. REPORTS AND RETURNS
 
  The appropriate officers of the Company shall cause to be filed any reports,
returns or other information regarding the Stock Options granted hereunder or
any Shares issued pursuant to the exercise thereof or a payment made hereunder,
as may be required by Section 13 or 15(d) of the Securities Exchange Act of
1934, as amended, or any other applicable statute, rule or regulation.
 
11. PLAN TERM
 
  The Plan shall be effective January 21, 1998, subject to approval within
twelve (12) months from the effective date by the holders of a majority of the
votes cast at a meeting. In the event the Plan is not so approved, the Plan
shall automatically terminate and be of no further force or effect. No Stock
Options shall be granted pursuant to this Plan after January 21, 2008.
 
 
                                      57
<PAGE>
 
12. AMENDMENT OR TERMINATION
 
  The Board of Directors may amend, alter or discontinue the Plan at any time
insofar as permitted by law, but no amendment or alteration shall be made
without the approval of the stockholders:
 
    (a) if, except as contemplated by Section 8 of the Plan, the amendment
  would permit the decrease of the purchase price of a Stock Option after the
  grant of the Stock Option or grant to the holder of an outstanding Stock
  Option, a new Stock Option with a lower purchase price in exchange for the
  outstanding Stock Option; or
 
    (b) if and to the extent such amendment requires stockholder approval
  under Section 422 of the Code (or any successor provision).
 
  No amendment of the Plan shall alter or impair any of the rights or
obligations of any person, without his or her consent, under any option or
right theretofore granted under the Plan.
 
13. GOVERNMENT REGULATIONS
 
  Nothwithstanding any of the provisions hereof or of any Stock Option granted
hereunder, the obligation of the Company or any subsidiary to sell and deliver
Shares under such Stock Option or to make cash payments in respect thereto
shall be subject to all applicable laws, rules and regulations and to such
approvals by any governmental agencies or national securities exchanges as may
be required, and the recipient shall agree that he will not exercise or
convert any option granted hereunder, and that the Company or any subsidiary
will not be obligated to issue any Shares or make any payments under any such
option if the exercise thereof or if the issuance of such Shares or if the
payment made shall constitute a violation by the recipient or the Company or
any subsidiary of any provision of any applicable law or regulation of any
governmental authority.

 
                                      58

<PAGE>
 
                                                                EXHIBIT 21

                           Significant Subsidiaries

Listed below are the significant first tier subsidiaries of the Registrant,
along with the total number of active subsidiaries directly or indirectly owned
by each as of December 31, 1997. Certain second and third tier subsidiaries,
though included in the numbers, are also shown by name. Ownership is 100% unless
otherwise indicated. The business activities of the subsidiaries have been keyed
as follows: (a) Oilfield Services, (b) Measurement & Systems, (c) Omnes, (d)
Other.

SCHLUMBERGER B.V., Netherlands (d)                            US        Non-US
                                                              --        ------
                                                                         * 33(a)
                                                                        ** 89(b)
                                                                        *** 5(c)
                                                                            9(d)

        SERVICES PETROLIERS SCHLUMBERGER France (a)
        SCHLUMBERGER INDUSTRIES, France (b)
        SCHLUMBERGER CANADA LIMITED, Ontario (d)
        SCHLUMBERGER PLC, U.K. (d)
        SCHLUMBERGER GmbH, Germany (d)
                AEG ZAHLER GmbH (b)
        OMNES B.V., Netherlands (c)
                OMNES S.A., France (c)

SCHLUMBERGER ANTILLES N.V., Netherlands Antilles (a)                        8(a)

        SEDCO FOREX OFFSHORE INTERNATIONAL N.V. (LIMITED),
        Netherlands Antilles (a)
        SCHLUMBERGER OFFSHORE SERVICES N.V. (LIMITED),
        Netherlands Antilles (a)

SCHLUMBERGER OILFIELD HOLDINGS LIMITED, B.V.I. (a)                   **** 143(a)
                                                                            3(d)
        DOWELL SCHLUMBERGER CORPORATION, B.V.I. (a)
        SCHLUMBERGER HOLDINGS LIMITED, B.V.I. (d)
                SCHLUMBERGER OVERSEAS, S.A., Panama (a)
                SCHLUMBERGER SURENCO, S.A. Panama (a)
        ANADRILL HOLDINGS LIMITED, B.V.I. (a)
        SCHLUMBERGER SEISMIC HOLDINGS LIMITED, B.V.I. (a)
        SEDCO FOREX HOLDINGS LIMITED, B.V.I. (a)

SCHLUMBERGER TECHNOLOGY CORPORATION, Texas (a)                  6(a)        1(a)
                                                                7(b)        1(b)
                                                          ***** 2(c)
                                                                3(d)
        SCHLUMBERGER TECHNOLOGIES, INC., Delaware (b)
                SCHLUMBERGER MALCO, INC. (b)
        SCHLUMBERGER RESOURCE MANAGEMENT SERVICES, INC., Delaware (b)
        SCHLUMBERGER COMMUNICATIONS, INC., Delaware (c)
                OMNES, Delaware (c)

GECO A.S., Norway (a)                                                       2(a)


*       Includes four less-than 100% owned subsidiaries which are not named.
**      Includes three 50% owned subsidiaries and nine other less-than 100%
        owned subsidiaries which are not named.
***     Includes two 50% owned subsidiaries, one of which is named.
****    Includes one 50% owned subsidiary and twelve other less-than 100% 
        owned subsidiaries which are not named.
*****   Includes one 50% owned subsidiary which is a named company.


                                      59

<PAGE>
 
                                                                EXHIBIT 23

                      Consent of Independent Accountants

We hereby consent to the incorporation by reference in the Registration 
Statement on Form S-8 (Nos. 2-64089 as amended; 33-21355; 33-35606; 33-86424; 
333-40227) of Schlumberger Limited of our report dated January 21, 1998 
appearing on page 44 of this Form 10-K.



/s/ Price Waterhouse LLP
- ------------------------
Price Waterhouse LLP
New York, New York
March xx, 1998



                                      60

<PAGE>
 
                                                                EXHIBIT 24(a)

                               Power of Attorney
                               -----------------

        Each of the undersigned, in the capacity or capacities set forth below 
his or her signature as member of the Board of Directors and/or an officer of 
Schlumberger Limited (the "Corporation"), a Netherlands Antilles corporation, 
hereby appoints David S. Browning, Arthur Lindenauer and Ellen S. Summer, and 
each of them, the attorney or attorneys of the undersigned, with full power of 
substitution and revocation, for and in the name, place and stead of the 
undersigned to execute and file with the Securities and Exchange Commission the 
Form 10-K Annual Report under the Securities Exchange Act of 1934 for the year 
ending 1997, and any amendment or amendments to any such Form 10-K Annual 
Report, and any agreements, consents or waivers relative thereto, and to take 
any and all such other action for and in the name and place and stead of the 
undersigned as may be necessary or desirable in connection with any such Form 
10-K Annual Report.


- -----------------------------------         -----------------------------------
D. Euan Baird                               William T. McCormick, Jr.
Director                                    Director
Chairman, President and
Chief Executive Officer


/s/ Don E. Ackerman
- -----------------------------------         -----------------------------------
Don E. Ackerman                             Didier Primat
Director                                    Director



- -----------------------------------         -----------------------------------
John Deutch                                 Nicolas Seydoux
Director                                    Director



- -----------------------------------         -----------------------------------
Denys Henderson                             Linda G. Stuntz
Director                                    Director



- -----------------------------------         -----------------------------------
Andre Levy-Lang                             Sven Ullring
Director                                    Director



                        -------------------------------
                        Yoshihiko Wakumoto
                        Director

Date: January 21, 1998
      ----------------

                                      61

<PAGE>
 
                                                                EXHIBIT 24(b)

                               Power of Attorney
                               -----------------

        Each of the undersigned, in the capacity or capacities set forth below 
his or her signature as member of the Board of Directors and/or an officer of 
Schlumberger Limited (the "Corporation"), a Netherlands Antilles corporation, 
hereby appoints David S. Browning, Arthur Lindenauer and Ellen S. Summer, and 
each of them, the attorney or attorneys of the undersigned, with full power of 
substitution and revocation, for and in the name, place and stead of the 
undersigned to execute and file with the Securities and Exchange Commission the 
Form 10-K Annual Report under the Securities Exchange Act of 1934 for the year 
ending 1997, and any amendment or amendments to any such Form 10-K Annual 
Report, and any agreements, consents or waivers relative thereto, and to take 
any and all such other action for and in the name and place and stead of the 
undersigned as may be necessary or desirable in connection with any such Form 
10-K Annual Report.


/s/ D. Euan Baird
- -----------------------------------         -----------------------------------
D. Euan Baird                               William T. McCormick, Jr.
Director                                    Director
Chairman, President and
Chief Executive Officer


                       
- -----------------------------------         -----------------------------------
Don E. Ackerman                             Didier Primat
Director                                    Director



- -----------------------------------         -----------------------------------
John Deutch                                 Nicolas Seydoux
Director                                    Director



- -----------------------------------         -----------------------------------
Denys Henderson                             Linda G. Stuntz
Director                                    Director



- -----------------------------------         -----------------------------------
Andre Levy-Lang                             Sven Ullring
Director                                    Director



                        -------------------------------
                        Yoshihiko Wakumoto
                        Director

Date: January 21, 1998
      ----------------

                                      62

<PAGE>
 
 
                                                                EXHIBIT 24(c)

                               Power of Attorney
                               -----------------

        Each of the undersigned, in the capacity or capacities set forth below 
his or her signature as member of the Board of Directors and/or an officer of 
Schlumberger Limited (the "Corporation"), a Netherlands Antilles corporation, 
hereby appoints David S. Browning, Arthur Lindenauer and Ellen S. Summer, and 
each of them, the attorney or attorneys of the undersigned, with full power of 
substitution and revocation, for and in the name, place and stead of the 
undersigned to execute and file with the Securities and Exchange Commission the 
Form 10-K Annual Report under the Securities Exchange Act of 1934 for the year 
ending 1997, and any amendment or amendments to any such Form 10-K Annual 
Report, and any agreements, consents or waivers relative thereto, and to take 
any and all such other action for and in the name and place and stead of the 
undersigned as may be necessary or desirable in connection with any such Form 
10-K Annual Report.


- -----------------------------------         -----------------------------------
D. Euan Baird                               William T. McCormick, Jr.
Director                                    Director
Chairman, President and
Chief Executive Officer


                        
- -----------------------------------         -----------------------------------
Don E. Ackerman                             Didier Primat
Director                                    Director


/s/ John Deutch
- -----------------------------------         -----------------------------------
John Deutch                                 Nicolas Seydoux
Director                                    Director



- -----------------------------------         -----------------------------------
Denys Henderson                             Linda G. Stuntz
Director                                    Director



- -----------------------------------         -----------------------------------
Andre Levy-Lang                             Sven Ullring
Director                                    Director



                        -------------------------------
                        Yoshihiko Wakumoto
                        Director

Date: 12/18/97
      ----------------

                                      63

<PAGE>
 
 
                                                                EXHIBIT 24(d)

                               Power of Attorney
                               -----------------

        Each of the undersigned, in the capacity or capacities set forth below 
his or her signature as member of the Board of Directors and/or an officer of 
Schlumberger Limited (the "Corporation"), a Netherlands Antilles corporation, 
hereby appoints David S. Browning, Arthur Lindenauer and Ellen S. Summer, and 
each of them, the attorney or attorneys of the undersigned, with full power of 
substitution and revocation, for and in the name, place and stead of the 
undersigned to execute and file with the Securities and Exchange Commission the 
Form 10-K Annual Report under the Securities Exchange Act of 1934 for the year 
ending 1997, and any amendment or amendments to any such Form 10-K Annual 
Report, and any agreements, consents or waivers relative thereto, and to take 
any and all such other action for and in the name and place and stead of the 
undersigned as may be necessary or desirable in connection with any such Form 
10-K Annual Report.


- -----------------------------------         -----------------------------------
D. Euan Baird                               William T. McCormick, Jr.
Director                                    Director
Chairman, President and
Chief Executive Officer


                         
- -----------------------------------         -----------------------------------
Don E. Ackerman                             Didier Primat
Director                                    Director



- -----------------------------------         -----------------------------------
John Deutch                                 Nicolas Seydoux
Director                                    Director


/s/ Denys Henderson
- -----------------------------------         -----------------------------------
Denys Henderson                             Linda G. Stuntz
Director                                    Director



- -----------------------------------         -----------------------------------
Andre Levy-Lang                             Sven Ullring
Director                                    Director



                        -------------------------------
                        Yoshihiko Wakumoto
                        Director

Date: January 21, 1998
      ----------------

                                      64

<PAGE>
 
 
                                                                EXHIBIT 24(e)

                               Power of Attorney
                               -----------------

        Each of the undersigned, in the capacity or capacities set forth below 
his or her signature as member of the Board of Directors and/or an officer of 
Schlumberger Limited (the "Corporation"), a Netherlands Antilles corporation, 
hereby appoints David S. Browning, Arthur Lindenauer and Ellen S. Summer, and 
each of them, the attorney or attorneys of the undersigned, with full power of 
substitution and revocation, for and in the name, place and stead of the 
undersigned to execute and file with the Securities and Exchange Commission the 
Form 10-K Annual Report under the Securities Exchange Act of 1934 for the year 
ending 1997, and any amendment or amendments to any such Form 10-K Annual 
Report, and any agreements, consents or waivers relative thereto, and to take 
any and all such other action for and in the name and place and stead of the 
undersigned as may be necessary or desirable in connection with any such Form 
10-K Annual Report.


- -----------------------------------         -----------------------------------
D. Euan Baird                               William T. McCormick, Jr.
Director                                    Director
Chairman, President and
Chief Executive Officer


                     
- -----------------------------------         -----------------------------------
Don E. Ackerman                             Didier Primat
Director                                    Director



- -----------------------------------         -----------------------------------
John Deutch                                 Nicolas Seydoux
Director                                    Director



- -----------------------------------         -----------------------------------
Denys Henderson                             Linda G. Stuntz
Director                                    Director


/s/ Andre Levy-Lang
- -----------------------------------         -----------------------------------
Andre Levy-Lang                             Sven Ullring
Director                                    Director



                        -------------------------------
                        Yoshihiko Wakumoto
                        Director

Date: January 21, 1998
      ----------------

                                      65

<PAGE>
 
 
                                                                EXHIBIT 24(f)

                               Power of Attorney
                               -----------------

        Each of the undersigned, in the capacity or capacities set forth below 
his or her signature as member of the Board of Directors and/or an officer of 
Schlumberger Limited (the "Corporation"), a Netherlands Antilles corporation, 
hereby appoints David S. Browning, Arthur Lindenauer and Ellen S. Summer, and 
each of them, the attorney or attorneys of the undersigned, with full power of 
substitution and revocation, for and in the name, place and stead of the 
undersigned to execute and file with the Securities and Exchange Commission the 
Form 10-K Annual Report under the Securities Exchange Act of 1934 for the year 
ending 1997, and any amendment or amendments to any such Form 10-K Annual 
Report, and any agreements, consents or waivers relative thereto, and to take 
any and all such other action for and in the name and place and stead of the 
undersigned as may be necessary or desirable in connection with any such Form 
10-K Annual Report.

                                            /s/ William T. McCormick, Jr.
- -----------------------------------         -----------------------------------
D. Euan Baird                               William T. McCormick, Jr.
Director                                    Director
Chairman, President and
Chief Executive Officer


                       
- -----------------------------------         -----------------------------------
Don E. Ackerman                             Didier Primat
Director                                    Director



- -----------------------------------         -----------------------------------
John Deutch                                 Nicolas Seydoux
Director                                    Director



- -----------------------------------         -----------------------------------
Denys Henderson                             Linda G. Stuntz
Director                                    Director



- -----------------------------------         -----------------------------------
Andre Levy-Lang                             Sven Ullring
Director                                    Director



                        -------------------------------
                        Yoshihiko Wakumoto
                        Director

Date: January 21, 1998
      ----------------

                                      66

<PAGE>
 
 
                                                                EXHIBIT 24(g)

                               Power of Attorney
                               -----------------

        Each of the undersigned, in the capacity or capacities set forth below 
his or her signature as member of the Board of Directors and/or an officer of 
Schlumberger Limited (the "Corporation"), a Netherlands Antilles corporation, 
hereby appoints David S. Browning, Arthur Lindenauer and Ellen S. Summer, and 
each of them, the attorney or attorneys of the undersigned, with full power of 
substitution and revocation, for and in the name, place and stead of the 
undersigned to execute and file with the Securities and Exchange Commission the 
Form 10-K Annual Report under the Securities Exchange Act of 1934 for the year 
ending 1997, and any amendment or amendments to any such Form 10-K Annual 
Report, and any agreements, consents or waivers relative thereto, and to take 
any and all such other action for and in the name and place and stead of the 
undersigned as may be necessary or desirable in connection with any such Form 
10-K Annual Report.


- -----------------------------------         -----------------------------------
D. Euan Baird                               William T. McCormick, Jr.
Director                                    Director
Chairman, President and
Chief Executive Officer


                                            /s/ Didier Primat
- -----------------------------------         -----------------------------------
Don E. Ackerman                             Didier Primat
Director                                    Director



- -----------------------------------         -----------------------------------
John Deutch                                 Nicolas Seydoux
Director                                    Director



- -----------------------------------         -----------------------------------
Denys Henderson                             Linda G. Stuntz
Director                                    Director



- -----------------------------------         -----------------------------------
Andre Levy-Lang                             Sven Ullring
Director                                    Director



                        -------------------------------
                        Yoshihiko Wakumoto
                        Director

Date: January 21, 1998
      ----------------

                                      67

<PAGE>
 
 
                                                                EXHIBIT 24(h)

                               Power of Attorney
                               -----------------

        Each of the undersigned, in the capacity or capacities set forth below 
his or her signature as member of the Board of Directors and/or an officer of 
Schlumberger Limited (the "Corporation"), a Netherlands Antilles corporation, 
hereby appoints David S. Browning, Arthur Lindenauer and Ellen S. Summer, and 
each of them, the attorney or attorneys of the undersigned, with full power of 
substitution and revocation, for and in the name, place and stead of the 
undersigned to execute and file with the Securities and Exchange Commission the 
Form 10-K Annual Report under the Securities Exchange Act of 1934 for the year 
ending 1997, and any amendment or amendments to any such Form 10-K Annual 
Report, and any agreements, consents or waivers relative thereto, and to take 
any and all such other action for and in the name and place and stead of the 
undersigned as may be necessary or desirable in connection with any such Form 
10-K Annual Report.


- -----------------------------------         -----------------------------------
D. Euan Baird                               William T. McCormick, Jr.
Director                                    Director
Chairman, President and
Chief Executive Officer



- -----------------------------------         -----------------------------------
Don E. Ackerman                             Didier Primat
Director                                    Director


                                            /s/ Nicolas Seydoux
- -----------------------------------         -----------------------------------
John Deutch                                 Nicolas Seydoux
Director                                    Director



- -----------------------------------         -----------------------------------
Denys Henderson                             Linda G. Stuntz
Director                                    Director



- -----------------------------------         -----------------------------------
Andre Levy-Lang                             Sven Ullring
Director                                    Director



                        -------------------------------
                        Yoshihiko Wakumoto
                        Director

Date: January 21, 1998
      ----------------

                                      68

<PAGE>
 
 
                                                                EXHIBIT 24(i)

                               Power of Attorney
                               -----------------

        Each of the undersigned, in the capacity or capacities set forth below 
his or her signature as member of the Board of Directors and/or an officer of 
Schlumberger Limited (the "Corporation"), a Netherlands Antilles corporation, 
hereby appoints David S. Browning, Arthur Lindenauer and Ellen S. Summer, and 
each of them, the attorney or attorneys of the undersigned, with full power of 
substitution and revocation, for and in the name, place and stead of the 
undersigned to execute and file with the Securities and Exchange Commission the 
Form 10-K Annual Report under the Securities Exchange Act of 1934 for the year 
ending 1997, and any amendment or amendments to any such Form 10-K Annual 
Report, and any agreements, consents or waivers relative thereto, and to take 
any and all such other action for and in the name and place and stead of the 
undersigned as may be necessary or desirable in connection with any such Form 
10-K Annual Report.


- -----------------------------------         -----------------------------------
D. Euan Baird                               William T. McCormick, Jr.
Director                                    Director
Chairman, President and
Chief Executive Officer



- -----------------------------------         -----------------------------------
Don E. Ackerman                             Didier Primat
Director                                    Director



- -----------------------------------         -----------------------------------
John Deutch                                 Nicolas Seydoux
Director                                    Director


                                            /s/ Linda G. Stuntz
- -----------------------------------         -----------------------------------
Denys Henderson                             Linda G. Stuntz
Director                                    Director



- -----------------------------------         -----------------------------------
Andre Levy-Lang                             Sven Ullring
Director                                    Director



                        -------------------------------
                        Yoshihiko Wakumoto
                        Director

Date: January 21, 1998
      ----------------

                                      69

<PAGE>
 
 
                                                                EXHIBIT 24(j)

                               Power of Attorney
                               -----------------

        Each of the undersigned, in the capacity or capacities set forth below 
his or her signature as member of the Board of Directors and/or an officer of 
Schlumberger Limited (the "Corporation"), a Netherlands Antilles corporation, 
hereby appoints David S. Browning, Arthur Lindenauer and Ellen S. Summer, and 
each of them, the attorney or attorneys of the undersigned, with full power of 
substitution and revocation, for and in the name, place and stead of the 
undersigned to execute and file with the Securities and Exchange Commission the 
Form 10-K Annual Report under the Securities Exchange Act of 1934 for the year 
ending 1997, and any amendment or amendments to any such Form 10-K Annual 
Report, and any agreements, consents or waivers relative thereto, and to take 
any and all such other action for and in the name and place and stead of the 
undersigned as may be necessary or desirable in connection with any such Form 
10-K Annual Report.


- -----------------------------------         -----------------------------------
D. Euan Baird                               William T. McCormick, Jr.
Director                                    Director
Chairman, President and
Chief Executive Officer



- -----------------------------------         -----------------------------------
Don E. Ackerman                             Didier Primat
Director                                    Director



- -----------------------------------         -----------------------------------
John Deutch                                 Nicolas Seydoux
Director                                    Director



- -----------------------------------         -----------------------------------
Denys Henderson                             Linda G. Stuntz
Director                                    Director


                                            /s/ Sven Ullring
- -----------------------------------         -----------------------------------
Andre Levy-Lang                             Sven Ullring
Director                                    Director



                        -------------------------------
                        Yoshihiko Wakumoto
                        Director

Date: January 21, 1998
      ----------------

                                      70

<PAGE>
 
 
                                                                EXHIBIT 24(k)

                               Power of Attorney
                               -----------------

        Each of the undersigned, in the capacity or capacities set forth below 
his or her signature as member of the Board of Directors and/or an officer of 
Schlumberger Limited (the "Corporation"), a Netherlands Antilles corporation, 
hereby appoints David S. Browning, Arthur Lindenauer and Ellen S. Summer, and 
each of them, the attorney or attorneys of the undersigned, with full power of 
substitution and revocation, for and in the name, place and stead of the 
undersigned to execute and file with the Securities and Exchange Commission the 
Form 10-K Annual Report under the Securities Exchange Act of 1934 for the year 
ending 1997, and any amendment or amendments to any such Form 10-K Annual 
Report, and any agreements, consents or waivers relative thereto, and to take 
any and all such other action for and in the name and place and stead of the 
undersigned as may be necessary or desirable in connection with any such Form 
10-K Annual Report.


- -----------------------------------         -----------------------------------
D. Euan Baird                               William T. McCormick, Jr.
Director                                    Director
Chairman, President and
Chief Executive Officer



- -----------------------------------         -----------------------------------
Don E. Ackerman                             Didier Primat
Director                                    Director



- -----------------------------------         -----------------------------------
John Deutch                                 Nicolas Seydoux
Director                                    Director



- -----------------------------------         -----------------------------------
Denys Henderson                             Linda G. Stuntz
Director                                    Director



- -----------------------------------         -----------------------------------
Andre Levy-Lang                             Sven Ullring
Director                                    Director


                        /s/ Yoshihiko Wakumoto
                        -------------------------------
                        Yoshihiko Wakumoto
                        Director

Date: January 21, 1998
      ----------------

                                      71

<PAGE>
 
                                                                EXHIBIT 99


        For the purposes of complying with the amendments to the rules governing
Form S-8 (effective July 13, 1990) under the Securities Act of 1933, the 
undersigned registrant hereby undertakes as follows, which undertaking shall be 
incorporated by reference into Registrant's Registration Statements on Form S-8 
Nos. 2-64089, as amended; 33-21355; 33-35606; 33-47592; 33-86424, and 333-40227.

        Insofar as indemnification for liabilities arising under the Securities 
Act of 1933 may be permitted to directors, officers and controlling persons of 
the registrant pursuant to the foregoing provisions, or otherwise, the 
registrant has been advised that in the opinion of the Securities and Exchange 
Commission such indemnification is against public policy as expressed in the 
Securities Act of 1933 and is, therefore, unenforceable.  In the event that a 
claim for indemnification against such liabilities (other than the payment by 
the registrant of expenses incurred or paid by a director, officer or 
controlling person of the registrant in the successful defense of any action, 
suit or proceeding) is asserted by such director, officer or controlling person 
in connection with the securities being registered, the registrant will, unless 
in the opinion of its counsel the matter has been settled by controlling 
precedent, submit to a court of appropriate jurisdiction the question whether 
such indemnification by it is against public policy as expressed in the Act and 
will be governed by the final adjudication of such issue.


                                      72


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