1. Petroleum Authority of Thailand
4. Kazakhstan National Oil and Gas Company
6. National Petroleum Corporation of Cuba
9. National oil company of Algeria
10. China National Petroleum Corporation/ CNPC
11. China Petro-chemical Corporation/ SINOPEC
12. Shell China exploration and production Co., Ltd/SCEPCO
13. China National Oil and Gas Development Corporation/ CNODC
19. Zhongyuan Oilfield Company
23. Department of energy, Alberta, Canada
26. Alberta core laboratory, Canada
27. Heavy oil laboratory Lab, University of Calgary