The Wennan Oilfield is located at the south central uplift belt, Dongpu Sag, where the reservoir of Member 1 of Shahejie Formation is the major super-seder and it is a lithologic and lithologic-fault block.

• 文南油田位于东濮凹陷中央隆起带南部,沙一段是现阶段该油田开发的主要接替层系,油藏类型属于岩性型和岩性 断块型。