- PetroChina Xinjiang Oilfield Company[2017/8/24]
- PetroChina Tarim Oilfield Company[2017/8/24]
- PetroChina Tuha Oilfield Company[2017/8/24]
- Sinopec Northwest Oilfield Company[2017/8/24]
- PetroChina Qinghai Oilfield Company[2017/8/24]
- PetroChina Yumen Oilfield Company[2017/8/24]
- PetroChina Xibu Drilling Engineering Co. Ltd[2017/8/24]
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