Tanghe Oilfield is located in tanghe county, Nanyang City, Henan Province. Tanghe Oilfield consists of the following oil fields: Tanghe Zhangdian Oilfield, Tanghe Shuanghe Oilfield (including He Jiang Oilfield), Tanghe Wang Ji Oilfield, Tongbai Zhao Ao Oilfield (including An Peng Oilfield) and Tanghe Lou Jing Oilfield. Weigang Oilfield in Wancheng District and Xiaermen Oilfield in Biyang