
                                                                    EXHIBIT 99.3

Wednesday June 10, 5:06 pm Eastern Time

Company Press Release

3DX Technologies Inc. Announces Sale of Common Stock

HOUSTON--(BUSINESS WIRE)--June 10, 1998--3DX Technologies Inc. (NASDAQ:TDXT
news) today announced that it has signed an agreement with several investors
providing for the issuance and sale of up to $5,000,000 worth of its Common
Stock at a purchase price of $1.50 per share. The agreement calls for the
immediate sale of $2,200,000 worth of stock at the agreed price and giving the
investors a 60 day option to elect to purchase the remaining $2,800,000 worth of
stock upon stockholder approval. The first sale closed today while the second
transaction will close following a stockholder's meeting that will be held as
soon as possible.

Ronald P. Nowak, president and CEO of 3DX commented: "This infusion of capital
will allow 3DX to go forward with its business. The money is designated for
payment of certain obligations relating to current exploration operations and
particularly to continue the drilling of our prospect portfolio."

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 the timing of the offering,
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
required approvals and conditions under the stock purchase agreement, 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. Certain of 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 as to the amount to be received by the Company in the offering or
that the Company's exploration activities will be successful in meeting the
Company's expectations. The securities being offered are not being registered
under the Securities Act of 1933, as amended, and may not be offered or sold in
the United States absent registration or an applicable exemption from
registration requirements.

Contact:

     3DX Technologies, Houston
     Ronald P. Nowak or Russell L. Allen, 281/579-3398





