Exh: 23.3 CONSENT OF INDEPENDENT PETROLEUM ENGINEERS AND GEOLOGISTS We hereby consent to the incorporation by reference in this Registration Statement on Form S-8 of our reports dated April 9, 1996, April 10, 1996, and May 13, 1996, that were utilized in aggregate as a basis for United Meridian Corporation's Form 10-K for the year ended December 31, 1995, and to all references to our Firm included in this Registration Statement. NETHERLAND, SEWELL & ASSOCIATES, INC. By: /s/ Frederic D. Sewell ---------------------- Frederic D. Sewell President Dallas, Texas June 4, 1996