Exhibit 23.3 Rauscher Pierce Refsnes, Inc. Consent The undersigned hereby consents to the inclusion of its opinion as an exhibit to the Registration Statement on Form S-4 of Sheffield Exploration Company, Inc. and to the references to the undersigned and the summarization of such opinion in the Registration Statement. May 10, 1996 Rauscher Pierce Refsnes, Inc. By /s/ Joseph P. Cunningham --------------------------- Joseph P. Cunningham, Managing Director