UNITED STATES SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, D.C. 20549
FORM 4
STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP
( ) Check this box if no longer subject to Section 16.
Form 4 or Form 5 obligations may continue. See Instructions 1(b).
1. Name and Address of Reporting Person
Schuchardt III, Joseph
c/o 3DX Technologies Inc.
12012 Wickchester, Suite 250
Houston, TX 77079-1218
2. Issuer Name and Ticker or Trading Symbol
3DX Technologies Inc.
TDXT
3. IRS or Social Security Number of Reporting Person (Voluntary)
4. Statement for Month/Year
December 22, 1997
5. If Amendment, Date of Original (Month/Year)
6. Relationship of Reporting Person(s) to Issuer (Check all applicable)
( ) Director ( ) 10% Owner (X) Officer (give title below) ( ) Other
(specify below)
Vice President of Business Development
7. Individual or Joint/Group Filing (Check Applicable Line)
(X) Form filed by One Reporting Person
( ) Form filed by More than One Reporting Person
<TABLE>
<CAPTION>
___________________________________________________________________________________________________________________________________
Table I -- Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned |
___________________________________________________________________________________________________________________________________|
1. Title of Security |2. |3. |4.Securities Acquired (A) |5.Amount of |6.Dir |7.Nature of Indirect |
| Transaction | or Disposed of (D) | Securities |ect | Beneficial Ownership |
| | | | Beneficially |(D)or | |
| | | | | A/| | Owned at |Indir | |
| Date |Code|V| Amount | D | Price | End of Month |ect(I)| |
___________________________________________________________________________________________________________________________________|
<S> <C> <C> <C><C> <C> <C> <C> <C> <C>
Common Stock, par value $.0|12/22/|P | |10,000 |A |$2.50 |41,697 |D | |
1 per share |97 | | | | | | | | |
- -----------------------------------------------------------------------------------------------------------------------------------|
___________________________________________________________________________________________________________________________________|
<CAPTION>
___________________________________________________________________________________________________________________________________
Table II -- Derivative Securitites Acquired, Disposed of, or Beneficially Owned |
___________________________________________________________________________________________________________________________________|
1.Title of Derivative |2.Con- |3. |4. |5.Number of De |6.Date Exer|7.Title and Amount |8.Price|9.Number |10.|11.Nature of|
Security |version |Transaction | rivative Secu |cisable and| of Underlying |of Deri|of Deriva |Dir|Indirect |
|or Exer | | | rities Acqui |Expiration | Securities |vative |tive |ect|Beneficial |
|cise | | | red(A) or Dis |Date(Month/| |Secu |Securities |(D)|Ownership |
|Price of| | | posed of(D) |Day/Year) | |rity |Benefi |or | |
|Deriva- | | | |Date |Expir| | |ficially |Ind| |
|tive | | | | A/|Exer-|ation| Title and Number | |Owned at |ire| |
|Secu- | | | | | D |cisa-|Date | of Shares | |End of |ct | |
|rity |Date |Code|V| Amount | |ble | | | |Month |(I)| |
___________________________________________________________________________________________________________________________________|
<S> <C> <C> <C> <C><C> <C> <C> <C> <C> <C> <C> <C> <C> <C>
Employee Stock Option | | | | | | |* |01/04|Common Stock|166,381|$0.19 |166,381 |D | |
(Right to Buy) | | | | | | | |/04 | | | | | | |
- -----------------------------------------------------------------------------------------------------------------------------------|
Employee Stock Option | | | | | | |** |02/07|Common Stock|10,000 |$11.875|10,000 |D | |
(Right to Buy) | | | | | | | |/07 | | | | | | |
- -----------------------------------------------------------------------------------------------------------------------------------|
| | | | | | | | | | | | | | |
___________________________________________________________________________________________________________________________________|
</TABLE>
Explanation of Responses:
* On January 4, 1994, the reporting person was granted an option to purchase
166,381 shares of Common
Stock (as adjusted for the .517-to-1 reverse split occurring in connection with
the Issuer's initial public offering of
Common Stock), pursuant to the Issuer's 1994 Stock Option Plan, as amended. As
of December 31, 1997, the
reporting person had a vested interest in 162,914 shares subject to the option.
The remaining shares subject to
the option will vest on January 31,
1998.
** On February 7, 1997, the reporting person was granted an option to purchase
10,000 shares of Common
Stock pursuant to the Issuer's 1994 Stock Option Plan, as amended. The shares
subject to the option vest at a
rate of 25% of the aggregate number of shares subject to the option on each of
the first and second anniversary
of the date of the option grant and thereafter the shares subject to the option
will vest monthly at the rate of
2.084% at the end of the next succeeding 24
months.
SIGNATURE OF REPORTING PERSON
/s/ Joseph Schuchardt III
DATE
January 12, 1998
