Sichuan Shale Gas Exploration and Development Co., Ltd. belongs to several units of Southwest Oil and Gas Field Company.

Sichuan Shale Gas Exploration and Development Co., Ltd. is the second-level unit of Southwest Oil and Gas Field Company. Southwest oil and gas field company is a secondary unit. A secondary company is a subsidiary of the head office or a branch established in other cities. The secondary company provides services for the superior company, or it is a full-time company in a professional field of the superior company.