GLJ Petroleum Consultants is a premier oil and gas resource consulting firm located in Calgary, Alberta, Canada. We are the market leader in Canadian evaluations and have dedicated professionals with the experience, expertise, and reputation to handle essentially any petroleum resource assessment situation worldwide.

Along with extensive industry experience in conventional Canadian and international oil and gas project evaluations, we also specialize in detailed assessments of unconventional resources.

GLJ’s in-depth industry knowledge and distinguished reputation benefits a diverse group of clients from small business to large integrated multi-national E&P’s, as well as financial institutions. Our dedicated team of engineering and geoscience professionals is committed to providing unparalleled customer service, and our flexible proprietary software allow us to customize results to suit unique needs.