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EXHIBIT 15
JOINT FILING AGREEMENT
The undersigned each agree that (i) the Statement on Schedule 13D, as
amended, relating to the Common Stock, $.01 par value, of Sheridan Energy, Inc.
has been adopted and filed on behalf on each of them, (ii) all future amendments
to such Statement on Schedule 13D will, unless written notice to the contrary is
delivered as described below, be jointly filed on behalf of each of them, and
(iii) the provisions of Rule 13d-1(f)(1) under the Securities Exchange Act of
1934 apply to each of them. This agreement may be terminated with respect to the
obligation to jointly file future amendments to such Statement on Schedule 13D
as to any of the undersigned upon such person giving written notice thereof to
each of the other persons signatory hereto, at the principal office thereof.
EXECUTED as of January 29, 1998
ENRON CAPITAL & TRADE RESOURCES CORP.
By: /s/ ▇▇▇▇▇ ▇. ▇▇▇▇▇▇▇▇
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Name: ▇▇▇▇▇ ▇. ▇▇▇▇▇▇▇▇
Title: Vice President and Secretary
ENRON CORP.
By: /s/ ▇▇▇▇▇ ▇. ▇▇▇▇▇▇▇▇
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Name: ▇▇▇▇▇ ▇. ▇▇▇▇▇▇▇▇
Title: Vice President and Secretary
JEDI HYDROCARBON
INVESTMENTS LIMITED PARTNERSHIP
By: JEDI Capital L.L.C.,
its general partner
By: /s/ ▇▇▇▇▇ ▇. ▇▇▇▇▇▇▇▇
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Name: ▇▇▇▇▇ ▇. ▇▇▇▇▇▇▇▇
Title: Vice President and Secretary
JOINT ENERGY DEVELOPMENT
INVESTMENTS LIMITED PARTNERSHIP
By: Enron Capital Management
Limited Partnership,
its general partner
By: Enron Capital Corp.,
its general partner
By: /s/ ▇▇▇▇▇ ▇. ▇▇▇▇▇▇▇▇
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Name: ▇▇▇▇▇ ▇. ▇▇▇▇▇▇▇▇
Title: Vice President and Secretary
