1 EXHIBIT 23.4 [DEGOLYER AND MACNAUGHTON LETTERHEAD] CONSENT OF INDEPENDENT PETROLEUM ENGINEERS We hereby consent to the incorporation by reference of our name in the Annual Report on Form 10-K of Seagull Energy Corporation and subsidiaries for the year ended December 31, 1998, into Ocean Energy Royalty Trust's Registration Statement on Form S-1 and Ocean Energy, Inc.'s (formerly known as Seagull Energy Corporation) Registration Statement on Form S-3 to which this consent is an exhibit. We further consent to the reference to our firm under the heading "Experts" in the Registration Statement. /s/ DEGOLYER AND MACNAUGHTON DeGOLYER and MacNAUGHTON Dallas, Texas July 14, 1999