Research Institute of Petroleum Exploration and development, Beijing 100083, China;
Research Institute of Petroleum Exploration and development, Beijing 100083, China;
Research Institute of Petroleum Exploration and development, Beijing 100083, China;
Research Institute of Petroleum Exploration and development, Beijing 100083, China;
PetroChina International Corporation, Beijing 100034, China;
Research Institute of Petroleum Exploration and development, Beijing 100083, China;
China Huayou(Group)Corporation, Beijing 100724, China.;