November 4, 1998                                    Contact: Ronald P. Nowak
                                                             or Russell L. Allen
                                                             (281) 579-3398


                              3DX TECHNOLOGIES INC.
 ANNOUNCES LETTER OF INTENT TO MERGE WITH FORTUNE NATURAL RESOURCES CORPORATION


Houston,  Texas--3DX Technologies Inc.(3DX) (NASDAQ : TDXT) today announced that
it has signed a letter of intent  with  Fortune  Natural  Resources  Corporation
(Fortune)  (AMEX:  FPX) which  provides for the merger of 3DX into Fortune.  The
letter of intent has been  approved by the board of directors of both  entities.
The  transaction is conditioned  upon,  among other things,  the preparation and
approval of a definitive merger agreement and the consent of the shareholders of
both companies.

The terms of the merger provide for the issuance of up to a maximum of 6,965,431
shares of Fortune  stock - an  exchange  ratio of 0.75  share of Fortune  common
stock for one share of 3DX common  stock.  3DX  shareholders  could also receive
additional Fortune stock two years after closing, up to a total of approximately
3.9 million  shares,  if additional  reserves  attributable  to the  exploration
properties acquired from 3DX contribute  disproportionately  to the total of all
reserves  added  by  Fortune  from all  exploration  properties,  under  certain
conditions.

Fortune has obtained a  conditional  commitment  from a private  investor for an
additional  $5  million  dollars  in  capital,  on terms to be agreed  upon,  to
facilitate  the  additional   exploration   capital   requirements  of  the  3DX
properties.

Fortune  has also  announced  the  signing  of a second  letter of  intent  with
Petro-Guard  Company,  Inc. and  Petro-Guard  Production LLC, two privately held
operating and production companies,  providing for the merger of these companies
into Fortune.

Fortune is an independent oil and natural gas company whose primary focus is the
exploration  for and  development  of domestic  oil and  natural  gas  reserves.
Fortune's  principal  areas of interest are onshore and offshore  Louisiana  and
Texas,  including the relatively  shallow Gulf Coast  transition zone, where the
use of modern  geophysical  technology  and advanced  interpretation  techniques
offers  the  opportunity  for new  discoveries  in  areas of  proven  historical
production.




Petro-Guard Group is comprised of two privately owned companies held principally
by Dewey  Stringer  III,  a  director  of  Fortune.  Petro-Guard  operates  both
producing  and  exploratory  properties  along  the  Gulf  Coast  of  Texas  and
Louisiana.

Ronald P. Nowak,  President and CEO of 3DX commented,  "We are extremely pleased
to have entered into this  agreement  with Fortune and feel this builds upon the
framework  for a stronger E&P company.  With the  addition of  Petro-Guard,  the
combined  production,  reserves and exploration  potential of the companies will
make  the  new  entity  a  more  powerful  presence  in  the  Gulf  Coast.  More
importantly,  the synergy of the  complimentary  skills that each group brings -
financial  management,  operations and geoscience - positions the new Fortune to
realize significant growth."

Tyrone J. Fairbanks,  President and CEO of Fortune, commented that, "We are very
pleased to enter into this agreement with 3DX Technologies Inc. 3DX is comprised
of fine oil and gas  professionals  with  exceptional  skills  in their  area of
expertise.  It has been a long-standing goal of Fortune, since moving to Houston
in 1996, to bring operational,  geophysical and geological disciplines inside of
Fortune.  This  transaction,  along  with  the  acquisition  of the  Petro-Guard
companies,  will significantly enhance Fortune's Gulf Coast presence, as well as
its oil and gas reserve and production base and drillable prospect inventory."

3DX Technologies Inc. is a knowledge-based oil and gas exploration company whose
core  competence and strategic  focus is the  utilization of 3-D seismic imaging
and other  advanced  technologies  in the search for  commercial  quantities  of
hydrocarbons.

Certain statements in this news release regarding future  expectations and plans
for oil and gas  exploration,  development  and  production  may be  regarded as
"forward  looking  statements"  within the meaning of the Securities  Litigation
Reform  Act.  They are  subject to various  risks,  such as  operating  hazards,
drilling risks,  and other  uncertainties  inherent in the business of exploring
for,  developing  and  producing  oil and gas which may be beyond the  Company's
control.  These risks are discussed in detail in the Company's  Annual Report on
Form 10-K for the year ended  December 31, 1997,  as well as other  filings with
the  Securities  and Exchange  Commission.  There can be no  assurance  that the
Company's  exploration  activities  will be  successful in meeting the Company's
expectations.