EXHIBIT 18 INEPENDENT PETROLEUM CONSULTANTS' CONSENT The undersigned firm of Independent Petroleum Consultants of Calgary, Alberta, Canada has prepared an interim report documenting observations made by this firm with respect to certain exploration and evaluation activities conducted by Pinnacle Oil International Inc. utilizing a proprietary technology call the Stress Field Detector and hereby gives consent to the use of its name. - -------------------------------------------- PERMIT TO PRACTICE GILBERT LAUSTSEN JUNG ASSOCIATES LTD. Signature /s/ Keith [ILLEGIBLE] --------------------------- Date June 24, 1998 -------------------------------- PERMIT NUMBER: P 2066 The Association of Professional Engineers, Geologists and Geophysicists of Alberta - -------------------------------------------- /s/ [ILLEGIBLE] ------------------------------------- Gilbert Laustsen Jung Associates Ltd.