Bohai Oilfield Exploration and Development Research Institute of CNOOC
China Petroleum Ji Dong Oilfield Exploration and Development Research Institute
oilfield exploitation and development
Science and Technology Developing Company of Henan Oilfield Exploration Bureau
Zhongyuan Oilfield Exploration Bureau
Bohai Oilfield Exploration and Development Research Institute
Liaohe Oilfield Exploration and Development Research Institute
Liaohe Oilfield Exploration Bureau
Henan Research Institute of Oilfield Exploration and Development
Anhui Exploration Branch of Jiangsu Oilfield of Petrochina
Exploration and Development Research Institute of Daqing Oilfield Company Limited
大庆油田有限责任公司勘探开发研究院
中国石油大庆油田有限责任公司勘探开发研究院
Exploration and Development Research Institute of Daqing Oilfield Company Ltd
Exploration and Development Research Institute of Henan Oilfield
Exploration and Development Research Institute of Huabei Oilfield
Exploration and Development Research Institute of Jidong Oilfield Subcompany
Exploration and Development Science research Institute of Zhongyuan Oilfield Branch Company
Exploration and Development Science Research Institute of Zhonyuan Oilfield Subcompany
中原油田分公司勘探开发科学研究院
中原油田分公司勘探开发科学研究院；中国地质大学
Exploration Supervising Section of Shengli Oilfield