Sinopec East China Oil and Gas Branch was established on December 31, 2002, with its origins traceable to an organization formed in 1958. It was integrated into Sinopec Group in 2000 following the merger with Xinxing Company. Headquartered in Jianye District, Nanjing City, Jiangsu Province, the company specializes in the exploration and development of unconventional oil and gas resources such as shale gas, coalbed methane, and shale oil, with mining rights covering an area of 16,600 square kilometers. In 2023, it produced 2.47 million tons of oil equivalent with a workforce of 1,356 employees. The company comprises 14 administrative departments and 11 secondary units, including research institutions such as the Petroleum Engineering Technology Research Institute. Emphasizing technological innovation, it undertakes multiple national key projects and has developed significant gas fields in regions including Shanxi and Chongqing.

The company implements a “technology + management” oil company system, comprising 14 administrative departments, 4 directly affiliated institutions, and 11 secondary units. The Petroleum Engineering Technology Research Institute serves as its core R&D center, focusing on drilling and completion technologies, reservoir enhancement, and other technical innovations. Its primary operations encompass shale gas, coalbed methane, shale oil exploration and development, and integrated CCUS (Carbon Capture, Utilization, and Storage) solutions. The total resources within its mining rights area amount to 3.515 billion tons of oil equivalent.