What level of unit is Jianghan Oilfield?

Jianghan Petroleum is a bureau-level unit. The frontier inspection station at the official level is subordinate to the National Immigration Bureau at the deputy ministerial level. Jianghan Petroleum is a bureau-level unit, a regional branch of Sinopec, and the company is a state-owned enterprise. Brief introduction of Jianghan Petroleum: Jianghan Oilfield is the second largest oilfield in China, which belongs to a comprehensive oilfield in Central and South China. Located in Jianghan Plain, headquartered in Qianjiang, Hubei Province, it is adjacent to Hanshui River in the north and Yangtze River in the south, with superior geographical location and convenient transportation. The oilfields are mainly distributed in 7 cities and counties, including Qianjiang City, Jingzhou City, Shandong Province, Shouguang City, Guangrao County, Hunan Province and Hengyang City, Hunan Province. Jianghan Oilfield has built four oil and gas production bases: Jianghan Oilfield, Bamianhe Oilfield in Shandong, Pingbei Oilfield in Ansai, Shaanxi and Jiannan Gas Field.