Tarim Oil Field Branch Company
中国石油天然气股份有限公司塔里木油田分公司
塔里木油田分公司勘探开发研究院
Exploration and Development Research Institute of Tarim Oil Company
Dagang Oil Field Company
大港油田分公司油气勘探开发技术研究中心
大港油田公司油气勘探开发技术研究中心
中国石油大港油田分公司
Daqing Oil Field Company Limited
大庆油田有限责任公司
大庆油田有限责任公司勘探开发研究院
Exploration and Development Research Institute of Daqing Oil Field Company Ltd
Exploration and Development Research Institute of Jilin Oil Field Company
Exploration and Development Research Institute of Zhongyuan Oil Field Company
Geologic Scientific Research Institute of Shengli Oil Field Company
No 11 Oil Production Company of Daqing Oil Field Company Ltd
No 7 Oil Production Company of Daqing Oil Field Company Ltd
No 9 Oil Production Company of Daqing Oil Field Company Ltd
Petro China Changqing Oil Field Company
Research Institute of Petroleum Exploration and Development of Jianghan Oil Field Company
The Drilling and Oil Production Technology Research Institute of Liaohe Oil Field Company
Geological Scientific Research Institute of Shengli Oil Field Company
Shengli Oil Field Company Ltd.