1 EXHIBIT 23.4 CONSENT OF DOR ENGINEERING INC., ENGINEERS CONSENT OF INDEPENDENT PETROLEUM ENGINEER To: American Explorer, L.L.C. Date: May 27, 1998 Gentlemen: D-O-R Engineering, Inc., independent petroleum engineers, hereby consent to the use of excerpts from our report included in this registration statement on Form S-4 and to the references to our firm therein. D-O-R ENGINEERING, INC. "Michael F. McKenzie" Michael F. McKenzie, PE - 173 -