Grant Production Testing Services Ltd., is an industry leading provider of Critical Sour, Post Stimulation Flow-back and Inli ... ne Testing Services. Grant PTS was incorporated in 2001 and has grown to be one of the largest privately owned Well Testing Service providers in Canada. Our management team brings over 130+ years of direct Well Testing and Flow-back experience to the table and our dedicated team members are focused on providing our clients with the best in class service, quality equipment and competent trained personnel. Our growth and recognized expertise within the industry is directly related to our commitment to safety and operational excellence. read more