PetroChina Southwest Oil and Gasfield Company (中国石油天然气股份有限公司西南油气田分公司) is the Southwest regional oil and gas exploration and production branch of PetroChina Company Limited. Centered on the Sichuan Basin and surrounding areas (including Sichuan and Chongqing), it explores, develops, and produces natural gas along with associated condensate, and operates gathering, processing, and transmission infrastructure to supply pipeline gas to regional markets.
For the chemical sector, the company is a significant upstream source of natural gas and natural gas liquids used as feedstocks for petrochemicals and fertilizers. Its gas treatment operations typically include sour gas removal, dehydration, fractionation, and sulfur recovery, yielding sales gas, condensate, and sulfur/by‑products. The unit also works on the development of both conventional and unconventional gas resources in the basin and applies reservoir management and HSE practices aligned with PetroChina’s standards.
