1 EXHIBIT 23.3 CONSENT OF RYDER SCOTT COMPANY, ENGINEERS RYDER SCOTT COMPANY 1100 Louisiana Suite 3800 Houston, Texas USA Telephone (713) 651-9191 Fax (713) 651-0849 May 27, 1998 Securities and Exchange Commission 450 Fifth Street N.W. Washington, D.C. USA 20549 Dear Sirs: Re: Optima Petroleum Corporation (the "Company") We consent to the use of excerpts of our engineering report dated December 31, 1997 and the references to our firm's name in the Company's Registration Statement (Form S-4). Yours truly, Ryder Scott Company "Ryder Scott Company Petroleum Engineers" - 173 -