NABORS INDUSTRIES INC
PRRN14A, 1998-12-04
DRILLING OIL & GAS WELLS
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      PRELIMINARY COPY - SUBJECT TO COMPLETION, DATED DECEMBER 4, 1998 
  
                                SCHEDULE 14A 
                               (Rule 14a-101) 
                  INFORMATION REQUIRED IN PROXY STATEMENT 
                                       
                          SCHEDULE 14A INFORMATION 
               Proxy Statement Pursuant To Section 14(a) of  
                    the Securities Exchange Act of 1934 
  
  
 Filed by the Registrant  ( ) 
  
 Filed by a Party other than the Registrant  (X) 
  
 Check appropriate box: 
  
 (X)  Preliminary Proxy Statement 
 ( )  Confidential, For Use of the Commission Only (as permitted by Rule
      14a-6(e)(2)) 
 ( )  Definitive Proxy Statement 
 ( )  Definitive Additional Materials 
 ( )  Soliciting Material Pursuant to Rule 14a-11(c) or Rule 14a-12 
                                       
  
                          POOL ENERGY SERVICES CO. 
              (Name of registrant as specified in its charter) 
  
                                       
                          NABORS INDUSTRIES, INC. 
                 (Name of Person(s) Filing Proxy Statement) 
  
 Payment of Filing Fee (Check the appropriate box): 
  
 (X)  No fee required. 
  
 ( )   Fee computed on table below per Exchange Act Rules 14a-6(i)(1) 
       and 0-11. 
  
           (1)  Title of each class of securities to which transaction
                applies: 
           (2)  Aggregate number of securities to which transaction applies: 
           (3)  Per unit price or other underlying value of transaction
                computed pursuant to Exchange Act Rule 0-11 (set forth the
                amount on which the filing fee is calculated and state how
                it was determined): 
           (4)  Proposed maximum aggregate value of transaction: 
           (5)  Total fee paid: 
  
 ( )  Fee paid previously with preliminary materials: 
  
      ( )  Check box if any part of the fee is offset as provided by
 Exchange Act Rule 0-11(a)(2) and identify the filing for which the
 offsetting fee was paid previously.  Identify the previous filing by
 registration statement number, or the form or schedule and the date of its
 filing. 
                                                         
      (1)  Amount previously paid: 
      (2)  Form, Schedule or Registration Statement no.: 
      (3)  Filing Party: 
      (4)  Date Filed:


<PAGE>

   
                  PRELIMINARY COPY SUBJECT TO COMPLETION, 
                           DATED DECEMBER 4, 1998 
    
  
                    [NABORS INDUSTRIES, INC. LETTERHEAD]
       
  
                                      December __, 1998 
  
 To the Shareholders of 
 Pool Energy Services Co.: 
  
   
      In October 1998, Nabors Industries, Inc. ("Nabors") sent two letters
 to Pool Energy Services Co. ("Pool"), proposing a business combination of
 the two companies.  In a letter dated October 12, 1998, sent to the Board
 of Directors of Pool (the "Pool Board"), Nabors proposed an offer of $12.50
 for each share of Pool common stock, a premium of 77% over the closing
 price of Pool common stock on October 9, 1998, the last day of trading
 prior to Nabors' offer.  Importantly, this offer also represented a 40%
 premium to the unaffected average Pool stock price of $8.93 per share for
 the 60 trading days prior to October 9, 1998.  In a letter sent to the Pool
 Board on October 28, 1998, and subsequently made public by a press release,
 Nabors proposed a merger (the "Merger Proposal") of the two companies in
 which Pool's shareholders would receive 0.481 shares of Nabors common stock
 and $6.125 in cash for each share of Pool common stock.  This offer implied
 a value of $14.72 per share of Pool common stock based on Nabors' closing
 stock price on October 27, 1998.  In addition, Nabors stated that it would
 consider offering a higher price if the Pool Board was able to demonstrate
 value that was not apparent from publicly available information.  The Pool
 Board rejected Nabors' proposed business combination unanimously and
 unequivocally, and despite Nabors' repeated attempts to meet with Pool's
 management over the six week period since October 12, 1998, Pool and its
 representatives have been unable to meet, or to set a date to meet, with
 Nabors and its representatives. 
    
  
      Nabors continues to believe that a business combination between the
 two companies makes eminent business sense and is in the best interests of
 Pool and its shareholders.  Nabors believes that a combination of the two
 companies will maximize the long-term value to be realized by Pool's
 shareholders based on the following: 
    
<PAGE>

   o       The Merger Proposal would provide each shareholder with the
           benefit of a premium to Pool's current stock price and an ongoing
           participation in the equity upside in the combined company. 
           Nabors' offer of .481 Nabors shares and cash of $6.125 per Pool
           share represented a significant premium of 77% to Pool's stock
           price of $7.06 on October 9, 1998, the last day of trading prior
           to Nabors' offer.  Importantly, the Merger Proposal also
           represented a 40% premium to the unaffected average Pool stock
           price of $8.93 per share for the 60 trading days prior to October
           9, 1998.
  
   o       Pool's stock price declined 34% from its closing price of $10.75
           on the date of its initial public offering on April 17, 1990, to
           a closing price of $7.06 on October 9, 1998, the last trading day
           prior to Nabors'  offer.  During the same period, Nabors' stock
           price increased 212% from $4.25 to $13.25.  Indeed, Pool's stock
           price performance since the implementation of Pool's strategic
           plan through October 9, 1998, has been lackluster compared to the
           industry.  From June 6, 1994 the day Nabors announced its
           ownership of 6.4% of the then outstanding Pool shares Pool's then
           stock price of $9.13 actually decreased 23% to $7.06 on October
           9, 1998, while the S&P Oil Well Equipment & Services Index
           increased 43% and Nabors' stock price increased 96%.
  
   
   o       Nabors believes the combined company will offer increased
           shareholder liquidity and enjoy increased exposure in the
           investment community compared to Pool on a stand-alone basis.
  
   o       Nabors believes the combined company will have greater ability to
           weather a down-turn in business activity than Pool on a stand-
           alone basis as a result of its larger market capitalization and
           more diversified asset base and geographic scope.
    
  
      Nabors is committed to affording Pool shareholders, the true owners of
 Pool, a meaningful opportunity to consider the Merger Proposal as well as
 any other potential business combinations with higher value than the Merger
 Proposal which may result from productive negotiations between Nabors and
 Pool.  Nabors believes, however, that a negotiated transaction remains the
 best method to realize the significant benefits of such a business
 combination. 


<PAGE>

   
      TO THIS END, NABORS, TOGETHER WITH ITS WHOLLY OWNED SUBSIDIARY, NABORS
 ALASKA DRILLING, INC., HAS CALLED A SPECIAL MEETING OF SHAREHOLDERS (THE
 "SPECIAL MEETING") TO BE HELD AT  THE OFFICES OF POOL, 10375 RICHMOND
 AVENUE, HOUSTON, TEXAS 77042, ON JANUARY 12,  1999 AT 9:30  A.M., LOCAL
 TIME.  
  
   o       At the Special Meeting, Nabors and its subsidiary will propose
           that the shareholders consider and adopt a non-binding resolution
           (the "NABORS RESOLUTION") recommending that Pool's Board arrange
           for the sale of Pool and take all necessary actions to effect
           such sale, including, among other things, entering into merger
           negotiations with Nabors and any other qualified bidder offering
           a higher price per share than Nabors.
    
  
   o       In rejecting the Merger Proposal, Pool cited its determination to
           pursue its strategic plan adopted in 1994.  However, during the
           period between June 6, 1994 and October 9, 1998, the last day of
           trading prior to Nabors' offer, the S&P Oil Well Equipment &
           Services Index increased 43% and Nabors' stock price increased
           96%, while Pool's stock price decreased by 23%.
  
   o       The Pool Board, which owns less than 0.3% (excluding options) of
           the outstanding common stock of Pool, is depriving you of the
           opportunity to even consider the Merger Proposal.  The NABORS
           RESOLUTION is your opportunity to tell the Pool Board that the
           true owners of Pool believe the Merger Proposal is a superior
           alternative to continued adherence to the underperforming
           strategic plan.  
  
      By signing and returning the enclosed BLUE proxy card and voting FOR
 the adoption of the non-binding NABORS RESOLUTION, you will be sending a
 strong message to Pool's Board of Directors that it must entertain all good
 faith proposals that may maximize shareholder value, including the Merger
 Proposal.  A vote FOR the adoption of the NABORS RESOLUTION will offer
 you the owners of Pool the best opportunity to decide what is in the best
 interests of your company. 
  

<PAGE>
  
   
      The enclosed Notice of Special Meeting and Proxy Statement contain
 important information concerning the Special Meeting and the Merger
 Proposal. PLEASE READ THEM CAREFULLY.  YOUR VOTE AND PROMPT ACTION ARE
 IMPORTANT.  I URGE YOU TO GRANT YOUR PROXY BY MARKING, SIGNING, DATING AND
 RETURNING THE ENCLOSED BLUE PROXY CARD AS SOON AS POSSIBLE. 
  
  
                                  Sincerely, 
  
      
                                  Eugene M. Isenberg 
                                  Chairman of the Board and  
                                  Chief Executive Officer   
  
  

<PAGE>
  
  

                                 IMPORTANT 
  
      If your Shares are held in your own name, please sign, date and return
      the enclosed BLUE proxy card today.  If your Shares are held in
      "Street-Name" only your broker or bank can vote your Shares and only
      upon receipt of your specific instructions.  Please return the
      enclosed BLUE proxy card to your broker or bank and contact the person
      responsible for your account to ensure that a BLUE proxy card is voted
      on your behalf. 
  
      Only shareholders of record on ________, 1998 are entitled to vote at
      the Special Meeting. 
  
      We urge you not to sign any proxy card you may receive from Pool. 
  
      If you have any questions or require any assistance in voting your
      Shares, please call: 
  
                           INNISFREE M&A INCORPORATED
                        501 Madison Avenue, 20(th) Floor 
                           New York, New York 10022 
  
                        CALL TOLL-FREE: (888) 750-5834 
  
               Bankers and Brokers Call Collect: (212) 750-5833 


<PAGE>


                          POOL ENERGY SERVICES CO. 
                           10375 RICHMOND AVENUE  
                            HOUSTON, TEXAS 77042 
  
                        ___________________________ 
  
                 NOTICE OF SPECIAL MEETING OF SHAREHOLDERS 
                       TO BE HELD ON JANUARY 12, 1999 
                           9:30 A.M. (LOCAL TIME) 
  
                        ___________________________ 
  
  
                                         December __, 1998 
  
  
 TO THE SHAREHOLDERS OF 
 POOL ENERGY SERVICES CO.:           
  
      A Special Meeting of Shareholders (the "Special Meeting") of Pool
 Energy Services Co. (the "Company") will be held at the offices of the
 Company,  10375 Richmond Avenue, Houston, Texas 77042, on  January 12, 1999
 at 9:30 a.m. local time, for the following purposes: 
  
      1.   To consider a non-binding resolution of the shareholders of the
           Company strongly recommending that the Board of Directors of the
           Company arrange for the sale of the Company and take all
           necessary actions to effect such sale, including, without
           limitation, (i) entering into good faith merger negotiations with
           Nabors Industries, Inc. ("Nabors") and any other qualified bidder
           for the Company offering a higher price per share than Nabors,
           (ii) redeeming the common stock purchase rights of the Company
           granted pursuant to the Rights Agreement, dated as of June 7,
           1994, between the Company and the First National Bank of Boston
           and (iii) taking all actions to approve the sale of the Company
           under the Texas Business Corporation Act (the "TBCA"), including,
           without limitation, Article 13.03 of the TBCA; it being
           understood that this resolution is admonitory only and that the
           Board of Directors of the Company must exercise its business
           judgment in fulfillment of its fiduciary duties to the
           shareholders of the Company.  
  
      2.   To transact such other business as may properly come before the
           Special Meeting. 
  
     The Special Meeting has been called at the direction of the undersigned
 shareholders, beneficial owners of not less than 10% of the shares entitled
 to vote at the Special Meeting, with the knowledge and consent of Cede &
 Co., the record holder of such shares, pursuant to Article 2.24C of the
 TBCA and Article II, Section 3 of the Company's Bylaws. 
                                       
                                                   
                              NABORS INDUSTRIES, INC. 
  
  
                              By: ________________________ 
                                  Name:   
                                  Title:   
  
  
                              NABORS ALASKA DRILLING, INC. 
  
  
                              By: ________________________ 
                                  Name:   
                                  Title: 
       
  

<PAGE>
  

   
                 PRELIMINARY COPY -- SUBJECT TO COMPLETION, 
                           DATED DECEMBER 4, 1998 
    
  
           ______________________________________________________ 

  
   
                      SPECIAL MEETING OF SHAREHOLDERS  
                                     OF 
                          POOL ENERGY SERVICES CO. 
                       TO BE HELD ON JANUARY 12, 1999 
           ______________________________________________________ 
    
                                       
                                 PROXY STATEMENT
                                       OF
                            NABORS INDUSTRIES, INC. 
                             515 WEST GREENS ROAD 
                                   SUITE 1200
                              HOUSTON, TEXAS 77067 
           ______________________________________________________ 
  
 PLEASE SIGN, DATE AND PROMPTLY RETURN THE ENCLOSED BLUE PROXY CARD IN THE
 ENCLOSED ENVELOPE  
           ______________________________________________________ 
  
      This proxy statement (the "Proxy Statement") and the accompanying BLUE
 proxy card are being furnished to shareholders of Pool Energy Services Co.
 (the "Company"), a Texas corporation, by Nabors Industries, Inc.
 ("Nabors"), a Delaware corporation, in connection with the solicitation of
 proxies from shareholders of the Company by Nabors to be used at the
 Special Meeting of Shareholders of the Company (the "Special Meeting"),
 scheduled to be held at the offices of the Company, 10375 Richmond Avenue,
 Houston, Texas 77042, on January 12, 1999 at 9:30 a.m. (local time), and at
 any and all adjournments, postponements or reschedulings thereof.  The
 Special Meeting has been called by shareholders of the Company owning
 approximately 10.50% in the aggregate of the outstanding shares of common
 stock, no par value per share, of the Company (the "Shares").  The purpose
 of the Special Meeting is to consider and vote on a non-binding resolution
 (the "Nabors Resolution") of the shareholders strongly recommending that
 the Board of Directors of the Company (the "Company Board") arrange for the
 sale of the Company and take all necessary actions to effect such sale,
 including, among other things, entering into merger negotiations with
 Nabors and any other qualified bidder for the Company offering a higher
 price per Share than Nabors. 


<PAGE>
  
      On October 12, 1998, and again on October 28, 1998, Nabors sent a
 letter to the Company proposing a negotiated business combination in which
 Nabors would acquire the Company for a combination of cash and common
 stock, par value $0.10 per share, of Nabors (the "Nabors Common Stock"). In
 the letter of October 28, 1998, Nabors proposed a merger transaction (the
 "Merger Proposal") in which each shareholder of the Company would receive
 0.481 shares of Nabors Common Stock and $6.125 in cash for each Share.  The
 consideration offered in the Merger Proposal implied a value of $14.72 per
 Share based on Nabors' closing stock price on October 27, 1998.  The Merger
 Proposal consideration represented a 77% premium over the Company's closing
 stock price on October 9, 1998, the last day of trading prior to the letter
 of October 12, 1998.  In addition, Nabors indicated that the Merger
 Proposal was based on publicly available information and if the Company
 could demonstrate additional value, Nabors would consider offering a higher
 price per Share.  Despite this attractive premium and Nabors' willingness
 to negotiate a higher price, the Company Board rejected the Merger Proposal
 after reviewing it for only two days and stated it was not interested in
 pursuing discussions related to a business combination with Nabors.  The
 Company has not met, nor set a date to meet, with Nabors to discuss the
 Merger Proposal or other business combination involving the two companies
 during the six week period since October 12, 1998, the date of Nabors'
 first offer. 
    
   The purpose of this proxy solicitation by Nabors is to facilitate a
 negotiated business combination between Nabors and the Company and to
 afford shareholders of the Company the opportunity to communicate to the
 Company Board that good faith offers to acquire the Company, like that made
 by Nabors, should be entertained in an effort to maximize shareholder
 value.  Nabors continues to believe that good faith negotiations are the
 best method to produce a mutually beneficial transaction.  Nabors believes
 that the Company Board, which owns in the aggregate less than 0.3%
 (excluding options) of the outstanding Shares (based on publicly available
 information), should not deprive the Company's shareholders of the
 opportunity to consider the Merger Proposal or any other bona fide merger
 proposals and to decide for themselves what is in the best interests of the
 Company and its shareholders. 
          
   AT THE SPECIAL MEETING, NABORS INTENDS TO PROPOSE THAT THE SHAREHOLDERS
 OF THE COMPANY ADOPT THE NABORS RESOLUTION. 
    

<PAGE>

   The Nabors Resolution is a non-binding shareholder resolution strongly
 recommending that the Company Board arrange for the sale of the Company and
 take all necessary actions to effect such sale, including, among other
 things, entering into merger negotiations with Nabors or any qualified
 bidder for the Company offering a higher price per Share than Nabors.  By
 voting for the adoption of the Nabors Resolution, shareholders of the
 Company can send a strong message that the Company Board should explore and
 evaluate all bona fide offers and acquisition proposals, including the
 Merger Proposal.  While the Nabors Resolution will not affirmatively
 require the Company Board to take any action, by voting for the adoption of
 the Nabors Resolution, you can let your directors know that there is simply
 no justification for refusing to discuss a significant opportunity to
 maximize Pool shareholder value. 
    
   THIS SOLICITATION IS BEING MADE BY NABORS AND NOT ON BEHALF OF THE BOARD
 OF DIRECTORS OF THE COMPANY. 

                             _______________ 
  
   This Proxy Statement and the BLUE proxy card are first being furnished to
 shareholders of the Company on or about _______ __, 1998. The principal
 executive offices of the Company are located at 10375 Richmond Avenue,
 Houston, Texas 77042. 
  
   
   The record date for determining shareholders entitled to notice of and to
 vote at the Special Meeting is           , 1998 (the "Special Meeting
 Record Date"). Shareholders of record at the close of business on the
 Special Meeting Record Date will be entitled to one vote at the Special
 Meeting for each Share held on the Special Meeting Record Date.  According
 to the Quarterly Report on Form 10-Q for the quarter ended September 30,
 1998, there were as of such date 21,043,898 Shares issued and outstanding.
 A majority of the outstanding Shares present in person or by proxy shall
 constitute a quorum to transact business at the Special Meeting and the
 affirmative vote of a majority of the Shares present in person or by proxy
 will be required to approve the Nabors Resolution.  Nabors and its
 subsidiary, Nabors Alaska Drilling, Inc., hold an aggregate of 2,209,500
 Shares, which represents approximately 10.50% of the outstanding Shares
 based on publicly available information. Nabors intends to vote such Shares
 in favor of the Nabors Resolution. 
    
    
   THE NABORS PROPOSAL IS DESIGNED TO ENHANCE THE LIKELIHOOD THAT
 ACQUISITION PROPOSALS, INCLUDING THE MERGER PROPOSAL, WILL BE FULLY
 EXAMINED BY THE COMPANY BOARD.  A VOTE IN FAVOR OF THE NABORS RESOLUTION
 WILL BE AN IMPORTANT STEP IN FACILITATING A NEGOTIATED TRANSACTION BETWEEN
 NABORS AND THE COMPANY.  IF YOU BELIEVE THE SAME, PROMPTLY SIGN, DATE AND
 MAIL THE ENCLOSED BLUE PROXY CARD. 


<PAGE>
  
  
                                 IMPORTANT 
  
      If your Shares are held in your own name, please sign, date and return
      the enclosed BLUE proxy card today.  If your Shares are held in
      "Street-Name" only your broker or bank can vote your Shares and only
      upon receipt of your specific instructions.  Please return the
      enclosed BLUE proxy card to your broker or bank and contact the person
      responsible for your account to ensure that a BLUE proxy card is voted
      on your behalf. 
  
      Only shareholders of record on ________, 1998 are entitled to vote at
      the Special Meeting. 
  
      We urge you not to sign any proxy card you may receive from Pool. 
  
      If you have any questions or require any assistance in voting your
      Shares, please call: 
  
                           INNISFREE M&A INCORPORATED
                        501 Madison Avenue, 20(th) Floor 
                            New York, New York 10022 
  
                        CALL TOLL-FREE: (888) 750-5834 
  
              Bankers and Brokers Call Collect: (212) 750-5833 
  

<PAGE>

  
                        BACKGROUND AND RECENT EVENTS 
                                       
   Nabors, through subsidiaries, originally began acquiring Shares in late
 1993 in order to obtain an equity position in the Company. 
    
   On September 13, 1993, Eugene M. Isenberg, Anthony G. Petrello and Warren
 Berman, directors of Nabors, had dinner with James T. Jongebloed and Ernest
 J. Spillard, both executive officers of the Company.  The purpose of the
 meeting was to enable the executives to become better acquainted and to
 introduce Mr. Petrello to Messrs. Jongebloed and Spillard.  Nabors'
 representatives expressed an interest in pursuing joint purchasing or other
 arrangements that could be of mutual benefit.  No specific proposals were
 discussed and no specific further actions decided upon.  During April 1994,
 Mr. Isenberg telephoned Mr. Jongebloed to inquire whether he had any
 interest in meeting to examine alternatives of working together for the
 mutual benefit of each company's shareholders.  No further discussions took
 place at that time. 
    
   Nabors continued to purchase Shares and filed a Schedule 13D with the
 Securities and Exchange Commission on May 26, 1994, reporting that Nabors
 then held 867,500 Shares (then constituting 6.4% of the outstanding
 Shares).  Shortly thereafter, in June 1994, the Company adopted a number of
 anti-takeover tactics, including, but not limited to, the adoption of a
 shareholder rights agreement or "poison pill."  The Company also announced
 that it had adopted a new strategic plan (the "Strategic Plan"). 
    
   In the summer of 1994, Mr. Isenberg, Mr. Petrello and Mr. Christopher
 Papouras of Nabors met with Mr. Jongebloed and the Company's investment
 advisors to discuss whether the Company had any interest in pursuing a
 merger, joint venture, or other combination in which Nabors and the Company
 could jointly improve profitability via improved asset utilization,
 reducing capital expenditures or reducing operating expenses.  Mr.
 Jongebloed indicated that the Company was not interested in pursuing any
 potential opportunities with Nabors and that the Company was planning to 
 implement the newly-adopted Strategic Plan. 
    
   In light of the opposition of the Company's management, Nabors decided to
 retain a substantial investment in the Company and to see whether the
 Company's management could realize the potential values for the Company's
 shareholders that had initially attracted Nabors as an investor and
 potential partner.  In July 1996, the Company issued an additional
 4,600,000 Shares and, as a result, Nabors' ownership of Shares dropped
 below 5%.  Subsequently, in February 1997, Nabors filed a final amendment
 to its original Schedule 13D filing,  noting that Nabors no longer was
 subject to the reporting requirements of that form.  However, since 1994,
 Nabors has continuously owned at least 867,500 Shares. 


<PAGE>
    
   In the summer of 1998, through intermediaries, Nabors again approached
 the Company regarding the potential benefits of a combination of the two
 companies.  The Company's representatives reported that the Company's
 management was not at that time open to pursuing discussions. 
    
   On October 12, 1998, Mr. Isenberg sent the following letter to the
 Company Board (the "October 12th Letter"):  

                                               October 12, 1998 
    
   CONFIDENTIAL 
    
   The Board of Directors of 
   Pool Energy Services Co. 
   10375 Richmond Avenue 
   Houston, Texas  77042 
    
   Dear Mr. Jongebloed: 
    
   We recently raised with your outside advisor the potential benefits to
 our respective stockholders, employees and customers of a combination of
 our two companies.  While you have informed us that you believe now is not
 an appropriate time for a combination, we believe that the current
 environment causes the combination to make eminent business sense for both
 companies. 
    
   The strategic direction of both Pool and Nabors is complementary.  Each
 company operates drilling and workover platform rigs in the Gulf of Mexico
 and internationally as well as land drilling operations in Alaska and
 internationally, including Saudi Arabia.  A combination of the two
 companies can lead to economies of scale that offer the prospect of
 significant purchasing, operating and other efficiencies.  Nabors' offshore
 presence would also offer significant opportunities for marketing Pool's
 Sea Mar Fleet. 
    
   In times of uncertainty,  stockholders, employees and customers will
 benefit from a  larger, stronger and better-capitalized company.  I  think
 most industry observers would also agree with this premise.   For this
 reason, we propose putting our two companies together and believe that such
 a combination is in the best interest of the stockholders of both
 companies. 


<PAGE>
    
   We would like to submit to your Board a merger proposal under which
 Nabors would acquire all of the outstanding shares of Pool at a price of
 $12.50 per share.  This consideration would be payable at least 51% in
 stock (to preserve tax free treatment) and the remainder in cash.  This
 structure offers those stockholders interested in retaining a long-term
 position the prospect of participating in future upside prospects that are
 materially enhanced as a result of the transaction and of growth with the
 benefit of an over 50 percent premium.  At the same time, stockholders
 electing cash will recognize an immediate substantial premium over current
 market. 
            
   Your management team has clearly been a major contributor to the
 Company's success.  We believe that there will be continuing roles for key
 management that will offer greater responsibilities and increased
 opportunities in the context of a substantially larger company. 
    
   While we know your business well, our proposal is based on public
 information.  If you can demonstrate additional value, we would consider
 offering a higher price. 
    
   Nabors' Board of Directors has unanimously approved our proposal.  Our
 financial advisors and bank lenders have assured us that financing is
 available to meet all transaction requirements.  Our legal advisors and we
 have also carefully studied any potential antitrust issues raised by a
 combination of our two companies, and we are confident that any necessary
 approvals for the transaction can be obtained without any undue delay.  Our
 proposal is of course subject to negotiation of a definitive merger
 agreement containing customary terms and conditions.  We are prepared to
 immediately commence negotiating a definitive acquisition agreement between
 our companies and to consummate the agreement in an expeditious manner. 
    
   My intent in sending this letter is to provide you with information about
 our contemplated proposal and to express our desire to work together with
 you to structure a transaction acceptable to your Board.  We do not believe
 this letter requires you to make any public disclosure and we do not intend
 to make it public at this time.  We would hope that at this point you would
 be prepared immediately to commence discussions on a confidential basis
 between us. 


<PAGE>

   We would like to meet with you and your representatives to discuss our
 proposal and to answer any questions that you may have.  Please contact my
 office (281-775-8077) to let me know when we can get together.  We would
 appreciate receiving your views as to our contemplated proposal no later
 than October 23, 1998. 
    
                                 Sincerely, 
    

                                 /s/ Eugene M. Isenberg 
    
                                 Eugene M. Isenberg 
                                 Chairman and Chief Executive Officer 
       
   On October 26, 1998, Mr. Jongebloed sent the following letter to Mr.
 Isenberg (the "October 26th Letter"):                             
    
                                       October 26, 1998 
    
   CONFIDENTIAL 
    
   Mr. Eugene M. Isenberg 
   Chairman and Chief Executive Officer 
   Nabors Industries, Inc. 
   515 West Greens Road, Suite 1200 
   Houston, Texas 77067-4525 
    
   Dear Mr. Isenberg: 
    
   My fellow directors and I have carefully considered your October 12, 1998
 letter, and I have been instructed by our Board to tell you that we are not
 interested in pursuing the discussions with your company suggested in that
 letter.  We want you to know that this decision is unanimous and
 unequivocal. 
    
   As you may know, our Company is committed to the implementation of its
 own strategic plan, which is designed to capitalize on opportunities for
 the Company and to increase shareholder values over the long term.  We
 believe the results of these efforts to date have been impressive.  But for
 the current unexpected downturn in our industry, which is the worst in many
 years, we believe our stock price would better reflect the efforts and
 achievements of our Board and management. 
    
   We regard your letter as an expression of confidence in our Company, and
 we are happy that you share our views concerning our Company's excellent
 prospects. 


<PAGE>
    
   You and your company have our best wishes. 
    
                               Yours very truly, 

    
                               /s/ J.T. Jongebloed 

                               J.T. Jongebloed 

    
   Following the receipt of the October 26th Letter and the Company's
 rejection of Nabors' proposal, Nabors consulted with its financial and
 legal advisors and determined that it would continue to correspond with the
 Company concerning a potential business combination between the Company and
 Nabors.  On October 28, 1998, Nabors sent the following letter to the
 Company (the "October 28th Letter"): 
    
   October 28, 1998 
    
   CONFIDENTIAL 
    
   The Board of Directors of 
   Pool Energy Services Co. 
   10375 Richmond Avenue 
   Houston, Texas  77042 
    
   Dear Mr. Jongebloed: 
    
   On October 12, 1998, I wrote to you proposing a combination of Nabors and
 Pool in which Nabors would acquire all of the outstanding shares of Pool
 for consideration consisting of 51% Nabors stock and 49% cash, with an
 implied value at that date of $12.50 per Pool share.  This offer
 represented a 77% premium to Pool's closing stock price of $7.06 per share
 on October 9, 1998, the last trading day prior to our proposal. On October
 26, 1998, we received a letter from you stating that Pool was not
 interested in pursuing discussions with Nabors.  In view of the superior
 value inherent in our proposal, we were surprised that your Board of
 Directors could have concluded unanimously and unequivocally not to discuss
 our proposal.  Had our proposal been accepted on October 12, your
 shareholders would have received consideration with a blended value today
 of $14.72 based on the ratios implied by our offer price of $12.50 and
 Nabors' closing price on October 9 of $13.25.  We continue to believe that
 a business combination based on these values is in the best interests of
 Pool and its shareholders. 


<PAGE>
    
   In your letter, you refer to Pool's commitment to the implementation of
 its own strategic plan, which is designed to increase shareholder value
 over the long-term.  We are convinced that this plan cannot outperform the
 benefits of a combination of Pool and Nabors given the high fragmentation
 of our industry, the economies of scale which will be realized through the
 combination and the enhanced capital structure of the combined entities. 
 As a result, we believe that a combination of our companies will maximize
 the long-term value to be realized by your shareholders. 
    
   Given the strong benefits of a combination of Pool and Nabors, we
 encourage you to reevaluate our proposal to enter into a merger in which
 Nabors would acquire all of the outstanding shares of Pool for
 consideration equal to 0.481 Nabors shares and  $6.125 in cash for each
 outstanding Pool share.  As stated above, this offer implies a value of
 $14.72 per Pool share based on Nabors' closing stock price on October 27,
 1998.  In addition, as we indicated in our letter of October 12, our
 proposal is based on public information and, if you can demonstrate
 additional value, we would consider offering a higher price. 
    
   We are hopeful that Pool's management and Board of Directors want to act
 in the best interests of the company's shareholders.  We also firmly
 believe that your shareholders would welcome our proposal, and we are
 committed to affording them the opportunity to do so.  Based on the
 unusually high trading volume in Pool's shares subsequent to our October 12
 letter, it is in both our interests to discuss this matter quickly.  I will
 call you tomorrow to discuss our proposal. 
    
    
   Sincerely, 
    
   /s/ Eugene M. Isenberg 
    
   Eugene M. Isenberg 
   Chairman and Chief Executive Officer 
    
   On October 30, 1998, Nabors issued a press release setting forth the text
 of the October 28th Letter and announcing the Merger Proposal.  The press
 release also disclosed Nabors' proposal contained in the October 12th
 Letter and the Company's rejection of that proposal by the October 26th
 Letter. 
    
   On October 30, 1998, the Company sent the following letter to Nabors (the
 "October 30th Letter"): 
    
                                    October 30, 1998 

<PAGE>
     
       
   Mr. Eugene M. Isenberg 
   Chairman and Chief Executive Officer 
   Nabors Industries, Inc. 
   515 West Greens Road, Suite 1200 
   Houston, Texas 77067-4525 
    
   Dear  Mr. Isenberg: 
    
      As I told you in my October 26 letter to you, our Board of Directors
 carefully considered your October 12, 1998 letter and instructed me to tell
 you that we are not interested in pursuing the discussions with your
 company suggested in that letter. As I also said, this decision was
 unanimous and unequivocal. 
    
      As you know, our Company is committed to the implementation of its own
 strategic plan, which is designed to capitalize on opportunities for the
 Company and to increase shareholder values over the long term.  We believe
 the results of these efforts to date have been impressive.  But for the
 current unexpected downturn in our industry, which is the worst in many
 years, we believe our stock price would better reflect the efforts and
 achievements of our Board and management. 
    
      It is not surprising that you share our views concerning our Company's
 excellent prospects, but our shareholders - not yours - should be the
 beneficiaries of our efforts as our industry recovers.  It would not be
 prudent or responsible for our Board to let others reap the benefits that
 rightly belong to our shareholders. 
    
                                    Yours very truly, 
    
                                    /s/ J.T. Jongebloed 
    
                                    J.T. Jongebloed 
    
   Following receipt of the October 30th Letter, Nabors continued to meet
 with its financial and legal advisors.  The result of such meetings was the
 decision to continue to pursue a business combination with the Company. 
    
   
   From November 3, 1998 through November 12, 1998, Nabors Alaska Drilling,
 Inc, a wholly owned subsidiary of Nabors ("Nabors Alaska"), purchased
 1,089,000 Shares in open market transactions on the NASDAQ National Market
 System.  On November 13, 1998, Nabors and its subsidiaries filed a Schedule
 13D disclosing such purchases.  From November 13, 1998 through November 20,
 1998, Nabors Alaska purchased 98,000 additional Shares in open market
 transactions on the NASDAQ National Market System. 
    


<PAGE>
    
   
   On November 23, 1998, ARRH, Inc., a Delaware corporation and a wholly
 owned subsidiary of Nabors Alaska, was merged with and into Nabors Alaska,
 with Nabors Alaska being the surviving corporation.  As a result of such
 merger Nabors Alaska and Nabors together beneficially own 2,209,500 Shares
 and filed an amendment to their Schedule 13D disclosing such beneficial
 ownership. 
    
    
   Despite Nabors' repeated attempts to meet with Pool's management over the
 six week period since October 12, 1998, Pool and its representatives have
 been unable to meet, or to set a date to meet, with Nabors and its
 representatives. 
     
 ARE THE COMPANY BOARD'S ACTIONS IN THE BEST INTERESTS OF THE SHAREHOLDERS? 
    
   Nabors has on two separate occasions proposed a merger transaction that
 would have given the Company's shareholders a substantial premium and an
 opportunity to become a shareholder of a stronger combined company.  In
 addition, as a part of each proposal, Nabors has offered to consider a
 higher price if the Company could demonstrate additional value.  The
 Company Board has deprived shareholders of the opportunity to realize such
 premiums by declining promptly to meet with Nabors, despite Nabors'
 repeated offers to negotiate such a transaction and the price per Share. 
 Nabors believes that the Company Board, which owns in the aggregate less
 than 0.3% (excluding options) of the outstanding Shares based on publicly
 available information, should not deprive the Company's shareholders of the
 opportunity to consider the Merger Proposal or any other bona fide merger
 proposals and decide for themselves what is in the best interests of their
 Company. 
    
   In its rejection of the Merger Proposal, the Company cited its
 determination to pursue  the Strategic Plan implemented in 1994, as an
 alternative to the benefits of the Merger Proposal.  However, during the
 period between June 6, 1994 and October 9, 1998, the last day of trading
 prior to the Merger Proposal, the S&P Oil Well Equipment & Services Index
 increased 43% and Nabors' stock price increased 96%, while the Company's
 stock price decreased 23%.  Nabors believes such disparities mandate that
 the Company Board look for opportunities to maximize shareholder value
 beyond the Strategic Plan, a plan that has produced minimal results since
 its implementation four years ago.  


<PAGE>
    
   Nabors communicated the Merger Proposal in the October 28th Letter, which
 the  Company Board rejected by the October 30th Letter.  The Company Board
 stated in such letter that it had "unanimously and unequivocally" rejected
 the Merger Proposal after a mere two days consideration, without any
 discussions with Nabors.  Nabors believes that the Company Board, with its
 minimal financial interest in the Company, should not deprive the true
 owners of the Company of the significant benefits of the Merger Proposal
 after only a cursory review of the merits of the Merger Proposal. 
      
   
   Absent the willingness of the Company Board to negotiate a business
 combination with Nabors, there are a number of obstacles to consummation of
 such a transaction, including the Company's "poison pill" shareholder
 rights agreement and certain provisions of the Texas Business Corporation
 Act (the "TBCA") restricting business combinations not approved by the
 Company Board.  The Nabors Resolution requests that the Company Board take
 all actions to approve the sale of the Company under the TBCA, including,
 without limitation, Article 13.03 of the TBCA, which generally restricts
 business combinations between Texas corporations and their shareholders who
 beneficially own 20% or more of the outstanding voting shares unless such
 transactions are approved by the board of directors.  In addition, the
 Nabors Resolution requests the Company Board redeem the "poison pill"
 common stock purchase rights currently outstanding.  Nabors believes that
 the redemption of such rights would permit shareholders who desire to do so
 to accept offers to acquire their Shares which they found attractive,
 including pursuant to the Merger Proposal, notwithstanding the fact that
 the Company Board may consider such offers to be inadequate. 
  
   The Company has apparently employed the "Just Say No" defense which is
 preventing the shareholders from deciding what is in their best interests. 
 Nabors believes that the Company's adherence to the four-year-old Strategic
 Plan, a plan that has delivered results that lag far behind the rest of the
 oil well services and equipment industry and Nabors' growth over the same
 period, is not a sufficient justification for rejecting the Merger Proposal
 and refusing to explore a transaction with Nabors.  Nabors believes that
 the decision to adhere to the Strategic Plan or to enter into a transaction
 with Nabors is one which should be made by the shareholders and one which
 can only be made after meaningful discussions between Nabors and the
 Company.    
    
  
 THE COMPANY HAS UNILATERALLY CHOSEN THE STRATEGIC PLAN FOR YOU.  THE EFFECT
 OF THE COMPANY BOARD'S ACTIONS IS TO PREVENT YOU FROM HAVING THE
 OPPORTUNITY TO CONSIDER OTHER ALTERNATIVES TO MAXIMIZE SHAREHOLDER VALUE. 
 NABORS BELIEVES THAT MEANINGFUL CONSIDERATION OF ALL BONA FIDE
 ALTERNATIVES, PROPOSALS AND OFFERS IS IN THE BEST INTERESTS OF THE
 SHAREHOLDERS AND THE COMPANY.  THE COMPANY BOARD BELIEVES THAT THE
 STRATEGIC PLAN IS THE ONLY ALTERNATIVE AFTER REVIEWING THE MERGER PROPOSAL
 FOR ONLY TWO DAYS.  YOU ARE ENTITLED TO ASK YOURSELF, "WHY WON'T THE
 COMPANY BOARD LET THE OWNERS OF THE COMPANY CONSIDER ALTERNATIVES TO THE
 STRATEGIC PLAN?" 


<PAGE>
  
                          ACTIONS YOU SHOULD TAKE 
  
 The Company Board has to date declined to discuss a business combination
 that would result in significant benefits to all parties, including the
 Company's shareholders.  Despite such refusal, Nabors continues to believe
 that a negotiated transaction is the best way to realize such benefits. 
 Accordingly, Nabors proposes that the shareholders approve the Nabors
 Resolution and let the Company Board know that shareholders believe that
 the Company Board should explore the sale of the Company to Nabors or any
 other qualified bidder offering a higher price per Share as a viable
 alternative to the Strategic Plan.  The Nabors Resolution is a non-binding,
 precatory resolution that will not require the Company Board to take any
 action.  However, the Nabors Resolution will send a strong message to the
 Company Board that the shareholders, the owners of the Company, do not
 agree with the Company Board's adherence to the Strategic Plan when the
 Company has been presented with a very attractive alternative, the Merger
 Proposal.   
  
 If, like us, you believe the shareholders should have the opportunity to
 decide the future of our company and that the Company has no justification
 for refusing to meet with Nabors to explore a business combination, we urge
 you to vote your BLUE proxy card FOR the Nabors Resolution.  The Nabors
 Resolution will let the Company Board know that the decision to adhere to
 the Strategic Plan or enter into a business combination with Nabors is
 ultimately for the shareholders and not for the Company Board alone.  The
 Nabors Resolution will remind the Company Board that they need to consider
 all proposals to maximize shareholder value, not simply the Strategic Plan
 which has, thus far, failed to deliver such value. 
  
                                THE PROPOSAL 
  
   THE NABORS RESOLUTION. 
    
   At the Special Meeting,  Nabors proposes that the shareholders of the
 Company adopt the following resolution: 
    
           RESOLVED, that the shareholders of Pool Energy Services Co. (the
      "Company") strongly recommend that the Board of Directors of the
      Company arrange for the sale of the Company and take all necessary
      actions to effect such sale, including, without limitation, (i)
      entering into good faith merger negotiations with Nabors Industries,
      Inc. ("Nabors") and any other qualified bidder for the Company
      offering a higher price per share of Company common stock than Nabors,
      (ii) redeeming the common stock purchase rights of the Company granted
      pursuant to the Rights Agreement, dated as of June 7, 1994, between
      the Company and the First National Bank of Boston and (iii) taking all
      actions to approve the sale of the Company under the Texas Business
      Corporation Act (the "TBCA"), including, without limitation, Article
      13.03 of the TBCA; it being understood that this resolution is
      admonitory only and that the Board of Directors of the Company must
      exercise its business judgment in fulfillment of its fiduciary duties
      to the shareholders of the Company.  


<PAGE>
    
   REASONS FOR THE NABORS RESOLUTION. 
    
   The Company has twice rejected concrete offers to enter into a merger
 transaction with Nabors.  Most recently, in the October 30th Letter, the
 Company Board, after only two days review, rejected the Merger Proposal. 
 Despite Nabors' willingness to meet with the Company and possibly offer a
 higher price, the Company has to date declined to discuss a potential
 business combination.  Nabors believes that the Merger Proposal or any
 other negotiated transaction between the Company and Nabors will provide
 significant benefits to the Company's shareholders.   Nabors believes that
 there is no justification for the Company Board's refusal to examine
 potential transactions that represent superior alternatives to the
 Strategic Plan. 
    
   Nabors believes that the Merger Proposal represents a unique and
 compelling opportunity to enhance value for shareholders of both Nabors and
 the Company based on the following:   
    
   o       The Merger Proposal would provide each shareholder with the
           benefit of a premium to the Company's current stock price and an
           ongoing participation in the equity upside in the combined
           company.  Nabors' offer of .481 Nabors shares and cash of $6.125
           per Pool share represented a significant premium of 77% to the
           Company's stock price of $7.06 on October 9, 1998, the last day
           of trading prior to Nabors' offer.  Importantly, the Merger
           Proposal also represented a 40% premium to the unaffected average
           Company stock price of $8.93 per share for the 60 trading days
           prior to October 9, 1998.
    
   o       The Company's stock price declined 34% from its closing price of
           $10.75 on the date of its initial public offering on April 17,
           1990, to a closing price of $7.06 on October 9, 1998, the last
           trading day prior to Nabors' offer.  During the same period,
           Nabors' stock price increased 212% from $4.25 to $13.25.  Indeed,
           the Company's stock price performance since the implementation of
           the Company's strategic plan through October 9, 1998, has been
           lackluster compared to the industry.  From June 6, 1994 the day
           Nabors announced its ownership of 6.4% of the then outstanding
           Company shares the Company's then stock price of $9.13 actually
           decreased 23% to $7.06 on October 9, 1998, while the S&P Oil Well
           Equipment & Services Index increased 43% and Nabors' stock price
           increased 96%.


<PAGE>
    
   
   o       Nabors believes the combined company will offer increased
           shareholder liquidity and enjoy increased exposure in the
           investment community compared to the Company on a stand-alone
           basis.
    
   o       Nabors believes the combined company will have greater ability to
           weather a down-turn in business activity than the Company on a
           stand-alone basis as a result of its larger market capitalization
           and more diversified asset base and geographic scope.
    
    
   Not only does the Merger Proposal offer the Company's shareholders a
 substantial premium for their Shares, but also the opportunity to
 participate as shareholders of the stronger combined company.  The Company
 Board, owners of less than 0.3% (excluding options) of the Shares, should
 not be able to "Just Say No" to a proposal that rightfully belongs to the
 shareholders of the Company, the true owners of the Company.  
    
   The Nabors Resolution will send a clear message to the Company Board that
 the shareholders support the sale of the Company as opposed to continued
 adherence to the Strategic Plan and that the Company should enter into
 merger negotiations with Nabors and any other qualified bidder for the
 Company offering a higher price per Share.  The Nabors Resolution does not
 mandate the sale of the Company.  The Company Board would not be required
 to take any action if the Nabors Resolution were to be adopted at the
 Special Meeting.  The Nabors Resolution, however, outlines the actions the
 shareholders expect the Company Board to take to facilitate a negotiated
 transaction with Nabors.  The Nabors Resolution will let the Company Board
 know that when they are offered an attractive proposal for the sale of the
 Company, the shareholders expect more of them than the "Just Say No"
 defense. 
    
   NABORS URGES YOU TO SEND THIS IMPORTANT MESSAGE TO THE COMPANY BOARD BY
 FILLING OUT THE BLUE PROXY CARD AND RETURNING IT TO NABORS TODAY. 


<PAGE>
    
   REQUIRED VOTE. 
    
   The affirmative vote of the holders of a majority of the Shares present
 in person or by proxy at the Special Meeting and entitled to vote thereat
 will be required to approve the Nabors Resolution. With respect to
 abstentions, the Shares will be considered present at the Special Meeting,
 but since they are not affirmative votes for the Nabors Resolution, they
 will have the same effect as votes against the Nabors Resolution. With
 respect to broker non-votes, the Shares will not be considered present at
 the Special Meeting for purposes of voting on the Nabors Resolution.
 Consequently, broker non-votes will not be counted with respect to the
 Nabors Resolution, but they will have the practical effect of reducing the
 number of affirmative votes required to achieve a majority with respect to
 the Nabors Resolution by reducing the total number of Shares from which the
 majority is calculated. 
  
                                PROXY PROCEDURES
  
   In order for your views on the Nabors Resolution to be represented at the
 Special Meeting, please mark, sign and date the enclosed BLUE proxy card
 and return it to Nabors, c/o Innisfree M&A Incorporated, in the enclosed
 envelope in time to be voted at the Special Meeting. Execution of the BLUE
 proxy card will not effect your right to attend the Special Meeting and to
 vote in person. Any proxy may be revoked at any time prior to the Special
 Meeting by delivering a written notice of revocation or a later dated proxy
 for the Special Meeting to Nabors or to the Secretary of the Company, or by
 voting in person at the Special Meeting. ONLY YOUR LATEST DATED PROXY FOR
 THE SPECIAL MEETING WILL COUNT AT THE SPECIAL MEETING. 
  
      Only holders of record as of the close of business on the Special
 Meeting Record Date will be entitled to vote. If you are a shareholder of
 record on the Special Meeting Record Date, you will retain your voting
 rights for the Special Meeting even if you sell such Shares after the
 Special Meeting Record Date. 
  
   If any of your Shares are held in the name of a brokerage firm, bank,
 bank nominee or other institution on the Special Meeting Record Date, only
 it can vote such Shares and only upon receipt of your specific
 instructions. Accordingly, please contact the person responsible for your
 account and instruct that person to execute the BLUE proxy card on your
 behalf. 
  
                             SOLICITATION OF PROXIES
  
   Proxies may be solicited by mail, facsimile, telephone, telegraph, in
 person and by advertisements. Solicitations may be made by certain
 directors, officers and employees of Nabors, none of whom will receive
 additional compensation for such solicitation. 


<PAGE>
  
   
   Banks, brokerage houses and other custodians, nominees and fiduciaries
 will be requested to forward the solicitation materials to the beneficial
 owners of Shares for which they are holders of record, and Nabors and will
 reimburse them for their reasonable out-of-pocket expenses. 
    
  
   Nabors has retained Innisfree M&A Incorporated ("Innisfree") for
 solicitation and advisory services in connection with this solicitation,
 for which Innisfree will receive a fee not to exceed $50,000, together with
 reimbursement for its reasonable out-of-pocket expenses. It is anticipated
 that approximately 40 persons will be employed by Innisfree to solicit
 proxies. 
  
   Merrill Lynch & Co. ("Merrill Lynch") has been engaged by Nabors as its
 financial advisor in connection with the proposed acquisition (the
 "Proposed Acquisition") of the Company.  As compensation for its services,
 Merrill Lynch will receive fees of (i) $100,000 payable by Nabors upon the
 making of an offer with respect to the Proposed Acquisition or similar
 transaction, (ii) $400,000 payable by Nabors upon a public announcement of
 an offer or proposal to the Company or any of its security holders to
 effect the Proposed Acquisition or similar transaction and (iii) $3,000,000
 less any Additional Amount (as defined below) upon the consummation of the
 Proposed Acquisition or similar transaction or following an agreement with
 the Company which subsequently results in a Proposed Acquisition or similar
 transaction.  Nabors has also agreed to pay Merrill Lynch 25% of certain
 proceeds received by Nabors in the event of termination of any agreement
 entered into by Nabors and the Company, less any amounts paid pursuant to
 clause (i), (ii) and (iii) above, subject to a maximum payment of
 $2,000,000, less any amounts paid pursuant to clause (i), (ii) and (iii)
 above (the "Additional Amount").  In addition, Merrill Lynch is entitled to
 reimbursement for the reasonable fees and disbursements of Merrill Lynch's
 counsel and all of Merrill Lynch's reasonable out-of-pocket expenses, as
 well as indemnification from certain liabilities. 
    
   
   In connection with the engagement of Merrill Lynch as financial advisor,
 Nabors anticipates that the representatives of Merrill Lynch set forth on
 Schedule I may communicate in person, by telephone or otherwise, with a
 limited number of institutions, brokers or other persons who are
 shareholders of the Company for the purpose of assisting in the
 solicitation of proxies.  Merrill Lynch will not receive any additional fee
 for or in connection with such solicitation activities by its
 representatives apart from the fees it is otherwise entitled to receive as
 described above. 
    
    
   The cost of soliciting proxies for the Special Meeting is being borne by
 Nabors. Nabors estimates that the total expenditures in connection with the
 solicitation (including the fees and expenses of their attorneys, public
 relations advisors and proxy solicitors, and advertising, printing,
 mailing, travel and other costs, but excluding salaries and wages of
 officers and employees) will be approximately $          , of which
 approximately $          has been spent to date. Nabors does not currently
 intend to seek reimbursement of the costs of this solicitation from the
 Company. 


<PAGE>
  
                         INFORMATION ABOUT PARTICIPANTS
  
   Nabors is the largest land drilling contractor in the world, with over
 400 actively marketed land rigs.  Nabors is principally engaged in oil and
 gas land drilling operations in North America (in the US lower 48 states,
 Alaska and Canada), and internationally (in South and Central America, the
 Middle East and other regions).  Nabors also markets approximately 33
 offshore drilling, well servicing and workover rigs in the Gulf of Mexico,
 Alaska's Cook Inlet and several international markets.  To supplement its
 primary businesses, Nabors offers ancillary well-site services, including
 oilfield management, engineering, transportation, construction,
 maintenance, well logging and other support services, in selected domestic
 and international markets.  In addition, Nabors manufactures and leases or
 sells top drives for a broad range of drilling rig applications and
 manufactures and leases or sells rig instrumentation equipment to monitor
 rig performance. 
    
   
   Nabors is subject to the information and reporting requirements of the
 Securities Exchange Act of 1934, as amended, and is required to file
 reports and other information with the Securities and Exchange Commission
 (the "Commission") relating to its business, financial condition and other
 matters. Information, as of particular dates, concerning Nabors' directors
 and officers, their remuneration, stock options granted to them, the
 principal holders of Nabors' securities, any material interests of such
 persons in transactions with Nabors and other matters is required to be
 disclosed in proxy statements distributed to Nabors' shareholders and filed
 with the Commission. These reports, proxy statements and other information
 should be available for inspection at the public reference facilities of
 the Commission located in Judiciary Plaza, 450 Fifth Street, N.W.,
 Washington, D.C. 20549 or its site on the World Wide Web:
 http://www.sec.gov, and also should be available for inspection and copying
 at prescribed rates at the following regional offices of the Commission:
 Seven World Trade Center, New York, New York 10048; and Citicorp Center,
 500 West Madison Street, Suite 1400, Chicago, Illinois 60661. Copies of
 this material may also be obtained by mail, upon payment of the
 Commission's customary fees, from the Commission's principal office at 450
 Fifth Street, N.W., Washington, D.C. 20549. Reports, proxy statements and
 other information concerning Nabors should also be available for inspection
 at the offices of the American Stock Exchange, 86 Trinity Place, New York,
 New York 10006. 
    
  
   Nabors has its principal executive offices at 515 West Greens Road, Suite
 1200, Houston, Texas 77067. 
    
   
   Nabors Alaska has its principal executive offices at 2525 C Street, Suite
 200, Anchorage, Alaska 99503. 
  
   Certain information concerning the directors and executive officers of
 Nabors and Nabors Alaska and certain employees and other representatives of
 Nabors who may also solicit proxies from shareholders is set forth in
 Schedule I.  As of the date of this Proxy Statement, Nabors and Nabors
 Alaska beneficially own 2,209,500 Shares.  Except as set forth in this
 Proxy Statement, no associate of Nabors owns any Shares. 
    
  
               CERTAIN TRANSACTIONS BETWEEN NABORS AND THE COMPANY
  
   
      Except as set forth in this Proxy Statement (including the Schedules
 hereto), none of Nabors, Nabors Alaska or any of the other participants in
 this solicitation, or any of their respective associates has any
 substantial interest, direct or indirect, by security holdings or otherwise
 in any matter to be acted upon as set forth in this Proxy Statement. 
 Except as disclosed in this Proxy Statement (including the Schedules
 hereto), to the best knowledge of Nabors and Nabors Alaska and their
 directors and officers, none of the associates of any of the foregoing
 persons beneficially owns, directly or indirectly, any Shares. 
    
  
      The purpose of the Merger Proposal is to facilitate a negotiated
 transaction in which Nabors would acquire control of, and the entire equity
 interest in, the Company.  Nabors will continue to evaluate alternatives
 available to it which will result, in its judgment, in maximizing
 shareholder value.  The alternatives which Nabors will evaluate include,
 but are not limited to, the following: (i) holding Shares for investment
 purposes; (ii) seeking cooperation between the Company and Nabors to
 capitalize on each company's capabilities; (iii) making further contact
 with the Company, the Company's representatives and other persons
 interested in the Company, for the purpose of discussing the above or an
 amended proposal for a merger or other business combination; (iv) seeking
 appropriate representation on the Company Board and/or changes in the
 Company Board or the Company's management that Nabors considers
 appropriate; (v) pursuing any other arrangement or transaction Nabors
 determines will result in maximizing shareholder value; (vi) seeking to
 obtain control of the Company; (vii) acquiring additional Shares, at prices
 and times Nabors considers appropriate, through other open market
 purchases, privately negotiated transactions, by tender or exchange offer
 or otherwise, in connection with one or more of the preceding alternatives
 set forth in (i)-(vi); and (viii) disposing of some or all of the Shares
 held by Nabors in the open market or in privately negotiated transactions. 


<PAGE>
  
   
      Except as indicated in this Proxy Statement or as disclosed in Nabors'
 filings with the Commission, neither Nabors nor Nabors Alaska has any
 present plans or proposals which relate to or would result in an
 extraordinary corporate transaction, such as a merger, reorganization or
 liquidation, involving the Company or any of its subsidiaries, a sale or
 transfer of a material amount of assets of the Company or any of its
 subsidiaries or any material change in the Company's capitalization or
 dividend policy or any other material changes in the Company's corporate
 structure or business, or the composition of the Board or management. 
    
  
                    OTHER MATTERS AND ADDITIONAL INFORMATION
  
   Schedule II sets forth certain information, as made available in public
 documents, regarding Shares held by the Company Board and the Company's
 management and certain other beneficial owners of Shares. The information
 concerning the Company contained in this Proxy Statement and the Schedules
 attached hereto has been taken from, or is based upon, publicly available
 information. Nabors has not to date had access to the books and records of
 the Company. 
  
   Shareholders will have no appraisal or similar rights of dissenters with
 respect to the proposal to adopt the Nabors Resolution. 
    
   
   According to the Company's most recent proxy statement, filed with the
 Commission on March 30, 1998, the deadline for submitting shareholder
 proposals for inclusion in the Company's proxy statement and form of proxy
 for the Company's next annual meeting, scheduled to be held on May 6, 1999,
 was December 1, 1998. 
    
  

  
 _______   , 1998                  
  
 NABORS INDUSTRIES, INC. 


<PAGE>

  
                                     ANNEX A
  
                              THE NABORS RESOLUTION
  
   The following is the resolution proposed to be adopted at the Special
   Meeting:  
  
     RESOLVED, that the shareholders of  Pool Energy Services Co. (the
   "Company") strongly recommend that the Board of Directors of the Company
   arrange for the sale of the Corporation and take all necessary actions to
   effect such sale, including, without limitation, (i) entering into good
   faith merger negotiations with Nabors Industries, Inc. ("Nabors") and any
   other qualified bidder for the Company offering a higher price per share
   than Nabors, (ii) redeeming the common stock purchase rights of the
   Company granted pursuant to the Rights Agreement, dated as of June 7,
   1994, between the Company and the First National Bank of Boston and (iii)
   taking all actions to approve the sale of the Company under the Texas
   Business Corporation Act (the "TBCA"), including, without limitation,
   Article 13.03 of the TBCA; it being understood that this resolution is
   admonitory only and that the Board of Directors of the Company must
   exercise its business judgment in fulfillment of its fiduciary duties to
   the shareholders of the Company. 


<PAGE>

  
                                   SCHEDULE I
  
   
               INFORMATION CONCERNING THE DIRECTORS AND EXECUTIVE
                      OFFICERS OF NABORS AND NABORS ALASKA
                            AND CERTAIN EMPLOYEES AND
                              OTHER REPRESENTATIVES
                                    OF NABORS
  
   Set forth in the tables below are the present principal occupation or
 employment and the name, principal business and address of any corporation
 or organization in which such employment is carried on for (l) each of the
 directors and officers of Nabors and Nabors Alaska and (2) certain
 employees and other representatives of Nabors who may also solicit proxies
 from shareholders of the Company. Unless otherwise indicated, each person
 identified below is employed by Nabors in the capacity specified. The
 principal business address of Nabors, and unless otherwise indicated below,
 the principal business address for each individual listed below is 515 West
 Greens Road, Suite 1200, Houston, Texas 77067.  The principal business
 address of Nabors Alaska is 2525 C Street, Suite 200, Anchorage, Alaska
 99503. 
    
  
               DIRECTORS AND OFFICERS OF NABORS AND NABORS ALASKA
  
 Name and Business Address     PRINCIPAL OCCUPATION OR EMPLOYMENT

 Eugene M. Isenberg            Chairman of the Board and Chief 
                               Executive Officer

 Anthony G. Petrello           President and Chief Operating Officer 

   
 Richard A. Stratton           Vice Chairman of the Board of  
                               Directors, Vice President of Nabors Alaska
    

 Gary T. Hurford               President of Hunt Oil Company 
 Hunt Oil Company 
 Fountain Place 
 1445 Ross at Field 
 Dallas, TX  75202-2785   


<PAGE>

 Hans W. Schmidt               Retired President of Deutag Drilling, a 
                               subsidiary of C. Deilman A.G. 
                               Investment Business Consultant
 
 Myron M. Sheinfeld            Senior Partner of the law firm of
 Sheinfeld, Maley & Kay        Sheinfeld, Maley &  Kay
 3700 First City Tower 
 Houston, TX  77002   

 Jack Wexler                   International Business Consultant
 205 Oceanway 
 Vero Beach, FL 32963     

 Martin J. Witman              Chairman, President and Chief
 767 Third Avenue              Executive Officer of Third Avenue
 New York, NY  10017-2023      Value Fund, Inc. (an open-end
                               Investment company)

 Bruce P. Koch                 Vice President - Finance

   
 Daniel McLachlin              Vice President - Administration and 
                               Corporate Secretary, Assistant Secretary 
                               of Nabors Alaska
    

 Mark Lindsey                  Director, Vice President - Finance and
 2525 C Street, Suite 200      Secretary/Treasurer of Nabors Alaska 
 Anchorage, Alaska 99503  

   
 James H. Denney               Director and President of Nabors Alaska
 2525 C Street, Suite 200 
 Anchorage, Alaska 99503  

 Jay L. Weidenbach             Director of Nabors Alaska
 2525 C Street, Suite 200 
 Anchorage, Alaska 99503   
    
  

<PAGE>


                     CERTAIN OTHER REPRESENTATIVES OF NABORS
                          WHO MAY ALSO SOLICIT PROXIES
  
   
     In connection with the engagement of Merrill Lynch as financial
 advisor, Nabors anticipates that the representatives of Merrill Lynch set
 forth below may communicate in person, by telephone or otherwise, with a
 limited number of institutions, brokers or other persons who are
 shareholders of the Company for the purpose of assisting in the
 solicitation of proxies.  The principal business address for each such
 representative is 1221 McKinney, Suite 2700, Houston, Texas 77010, and each
 such representative is employed by Merrill Lynch in the capacity specified. 
  
 Name                        PRINCIPAL OCCUPATION OR EMPLOYMENT
 ----                        ----------------------------------

 Samuel R. Dodson            Managing Director

 Christopher D. Mize         Director

 Robert Pacha                Associate

 Michael Aaronson            Analyst 

     Merrill Lynch engages in a full range of investment banking, securities
 trading, market-making and brokerage services for institutional and
 individual clients.  In the normal course of its business, Merrill Lynch
 may trade securities of the Company for its own account and the accounts of
 its customers and, accordingly, may at any time hold a long or short
 position in such securities.  Merrill Lynch has informed Nabors that as of
 December 3, 1998, Merrill Lynch held a net long position of 192,283 Shares.
 Merrill Lynch does not admit that it or any of its directors, officers,
 employees or affiliates is a "participant" as defined in Schedule 14A
 promulgated under the Exchange Act by the Commission, in the solicitation
 to which this Proxy Statement relates or that such Schedule 14A requires
 the disclosure in this Proxy Statement of certain information concerning
 Merrill Lynch. 
    

<PAGE>
  

                                SCHEDULE II 
  
                      SHARE OWNERSHIP OF CERTAIN BENEFICIAL
                      OWNERS AND OF THE COMPANY MANAGEMENT
  
   
     The following table sets forth certain information regarding the
 beneficial ownership of Shares as known to Nabors.  Except as otherwise
 noted, the information set forth below concerning the beneficial ownership
 of Shares by  (a) each director of the Company, (b) each executive and
 other corporate officer of the Company and (c) each person known to the
 Company to be the beneficial owner of more than 5% of the Shares, has been
 taken from the Company's preliminary proxy statement, filed with the
 Commission on November 30, 1998.  As set forth in such proxy statement,
 such information is current as of October 31, 1998.  Shareholders should
 review more recent publicly available filings, if any, concerning the
 Company for more recent information.  Such information is available in the
 manner set forth under "INFORMATION ABOUT PARTICIPANTS" above. 
    
                           
  
                                                  Beneficial Ownership
                                                  --------------------
                                                              Percent
         Name of Beneficial Owner                 Shares      of Total
         ------------------------                 ------       --------

   
 Nabors  . . . . . . . . . . . . . . . . . .    2,209,500(d)   10.50%
 Alton Anthony Gonsoulin, Jr.                   2,000,000(e)     9.5%
 J. T. Jongebloed (a) (b)  . . . . . . . . .  181,110.203(f)       *
 William H. Mobley (a) . . . . . . . . . . .       20,200(g)       *
 Joseph R. Musolino  . . . . . . . . . . . .       14,200(h)       *
 James L. Payne  . . . . . . . . . . . . . .       13,000(i)       *
 Dennis R. Hendrix (a)   . . . . . . . . . .       10,000          *
 John F. Lauletta (a)  . . . . . . . . . . .         - 0 -         *
 William J. Myers (b)  . . . . . . . . . . .   50,008.210(j)       *
 Ronald G. Hale (b)  . . . . . . . . . . . .   22,333.337(k)       *
 Ernest J. Spillard (b)  . . . . . . . . . .   99,394.681(l)       *
 Louis E. Dupre (b) . . . . . . . . . . . .    12,251.087(m)       *
 Geoffrey Arms (b) . . . . . . . . . . . . .   53,714.295(n)       *
 David C. Oatman (c)   . . . . . . . . . . .        2,662(o)       *
 Richard A. Johannsen (c)  . . . . . . . . .      11,8740(p)       *
 Beth G. Gordon (c)  . . . . . . . . . .  .           812(q)       *
 All directors and executive officers 
 as a group (14 persons)(a)(b)(c) . . . . .   491,359.813(r)     2.3%
    

____________________ 
 * Less than 1% 


<PAGE>

  
   
      (a)  Director with sole voting and dispositive power over all Shares
           owned or acquirable upon exercise of options as described in
           other footnotes to this table. 
  
      (b)  Executive officer with sole voting and dispositive power over all
           Shares owned or acquirable upon exercise of options as described
           in other footnotes to this table. 
  
      (c)  Other corporate officer with sole voting and dispositive power
           over all Shares owned or acquirable upon exercise of options as
           described in other footnotes to this table. 
  
      (d)  Based upon an amended Schedule 13D filed on November 20, 1998;
           power to dispose and vote shared with a wholly owned subsidiary. 
  
      (e)  Based upon an amended Schedule 13D filed on September 18, 1998;
           461,539 of such Shares are owned by a wholly owned corporate
           affiliate; 769,231 of such Shares are held in escrow to fund
           indemnity obligations to the Company through March 31, 2000; the
           escrowed Shares must be voted as directed by the Board through
           March 31, 2000. 
  
      (f)  Includes 166,723 Shares which may be acquired through the
           exercise of stock options that are currently exercisable or will
           become exercisable within 60 days after October 31, 1998. 
  
      (g)  Includes 16,000 Shares which may be acquired through the exercise
           of stock options that are currently exercisable or will become
           exercisable within 60 days after October 31, 1998. 
  
      (h)  Includes 10,000 Shares which may be acquired through the exercise
           of stock options that are currently exercisable or will become
           exercisable within 60 days after October 31, 1998. 
  
      (i)  Includes 8,000 Shares which may be acquired through the exercise
           of stock options that are currently exercisable or will become
           exercisable within 60 days after October 31, 1998. 
  
      (j)  Includes 22,437 Shares which may be acquired through the exercise
           of stock options that are currently exercisable or will become
           exercisable within 60 days after October 31, 1998. 
  
      (k)  Includes 12,505 Shares which may be acquired through the exercise
           of stock options that are currently exercisable or will become
           exercisable within 60 days after October 31, 1998. 
  
      (l)  Includes 90,457 Shares which may be acquired through the exercise
           of stock options that are currently exercisable or will become
           exercisable within 60 days after October 31, 1998. 
  
      (m)  Includes 9,668 Shares which may be acquired through the exercise
           of stock options that are currently exercisable or will become
           exercisable within 60 days after October 31, 1998. 
  
      (n)  Includes 45,804 Shares which may be acquired through the exercise
           of stock options that are currently exercisable or will become
           exercisable within 60 days after October 31, 1998. 
  

      (o)  Includes 2,562 Shares which may be acquired through the exercise
           of stock options that are currently exercisable or will become
           exercisable within 60 days after October 31, 1998. 
  
      (p)  Includes 3,937 Shares which may be acquired through the exercise
           of stock options that are currently exercisable or will become
           exercisable within 60 days after October 31, 1998. 
  
      (q)  Includes 812 Shares which may be acquired through the exercise of
           stock options that are currently exercisable or will become
           exercisable within 60 days after October 31, 1998. 
  
      (r)  Includes 388,905 Shares which may be acquired through the
           exercise of stock options that are currently exercisable or will
           become exercisable within 60 days after October 31, 1998. 
    

<PAGE>

  
                                 IMPORTANT
  
   Your vote is important, no matter how many or how few Shares you may own. 
 We urge you to vote FOR the adoption of the Nabors Resolution by: 
  
      1.   SIGNING the enclosed BLUE proxy card, 
  
      2.   DATING the enclosed BLUE proxy card, and 
  
      3.   MAILING the enclosed BLUE proxy card TODAY in the envelope 
           provided (no postage is required if mailed in the United States). 
  
   IF ANY OF YOUR SHARES ARE HELD IN THE NAME OF A BROKERAGE FIRM, BANK,
 BANK NOMINEE OR OTHER INSTITUTION, ONLY IT CAN VOTE SUCH SHARES AND ONLY
 UPON RECEIPT OF YOUR SPECIFIC INSTRUCTIONS. ACCORDINGLY, PLEASE CONTACT THE
 PERSON RESPONSIBLE FOR YOUR ACCOUNT AND INSTRUCT THAT PERSON TO EXECUTE THE
 BLUE PROXY CARDS REPRESENTING YOUR SHARES. NABORS URGES YOU TO CONFIRM IN
 WRITING YOUR INSTRUCTIONS TO NABORS IN CARE OF INNISFREE M&A INCORPORATED
 AT THE ADDRESS PROVIDED BELOW SO THAT NABORS WILL BE AWARE OF ALL
 INSTRUCTIONS GIVEN AND CAN ATTEMPT TO ENSURE THAT SUCH INSTRUCTIONS ARE
 FOLLOWED. 
  
   If you have any questions or require any additional information
 concerning this Proxy Statement, please contact Innisfree M&A Incorporated
 at the address set forth below. 

  
                         INNISFREE M&A INCORPORATED
                       501 MADISON AVENUE, 20TH FLOOR
                          NEW YORK, NEW YORK 10022
  
                       CALL TOLL FREE (888) 750-5834
                                     OR
              BANKS AND BROKERS CALL (212) 750-5833 (COLLECT)


<PAGE>


                  PRELIMINARY COPY SUBJECT TO COMPLETION, 
                           DATED DECEMBER 4, 1998 
  
                         [FORM OF PROXY CARD BLUE] 
  
  
                         POOL ENERGY SERVICES CO. 
                     SPECIAL MEETING OF SHAREHOLDERS 
  
                       THIS PROXY IS SOLICITED BY 
                         NABORS INDUSTRIES, INC. 
  
  
      The undersigned shareholder of Pool Energy Services Co. (the
 "Company") hereby appoints Eugene M. Isenberg and Anthony G. Petrello, each
 with full power of substitution, as proxies of the undersigned, to
 represent and to vote, as designated below, all shares of common stock, no
 par value per share, of the Company which the undersigned is entitled to
 vote at the Special Meeting of Shareholders called for the purpose set
 forth below or at any adjournment(s), postponement(s) or rescheduling(s)
 thereof (the "Special Meeting").  The undersigned hereby revokes any
 previous proxy with respect to the matter covered by this Proxy.  
  
    NABORS INDUSTRIES, INC. STRONGLY RECOMMENDS A VOTE FOR THE PROPOSAL. 
  
 Proposal: Approve a non-binding, precatory resolution recommending that the
           Company's Board of Directors arrange for the sale of the Company
           and take all necessary actions to effect such sale. 
  
           /    /    For       /    /    Against        /    /    Abstain 
  
      PLEASE SIGN EXACTLY AS YOUR NAME APPEARS ON THIS PROXY.  WHEN SHARES
 ARE HELD BY JOINT TENANTS, BOTH SHOULD SIGN.  WHEN SIGNING AS ATTORNEY-IN-
 FACT, EXECUTOR, ADMINISTRATOR, TRUSTEE OR GUARDIAN, PLEASE GIVE FULL TITLE
 AS SUCH.  IF A COMPANY, PLEASE SIGN IN FULL CORPORATE NAME BY THE PRESIDENT
 OR OTHER AUTHORIZED OFFICER.  IF A PARTNERSHIP, PLEASE SIGN IN PARTNERSHIP
 NAME BY AN AUTHORIZED PERSON. 
  
  
                               DATED:_________________ , 199_ 
  
                
                               _______________________________  
                                        (Signature) 
  
                               Title:_________________________  
                     
                               _______________________________
                                 (Signature if held jointly) 
  
                               Title:_________________________   
  

  
 PLEASE SIGN, DATE AND MAIL PROMPTLY IN THE POSTAGE-PAID ENVELOPE ENCLOSED. 





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