It is concluded that the oil in this area is the mixed oil derived from Middle-Lower Cambrian and Middle-Lower Ordovician source nicks based on the oil biomarkers and reservoir bitumen analysis.

• 通过对该区原油生物标志物特征分析和储集层沥青研究，认为该地区原油主要为中下寒武统和中下奥陶统烃源岩的混源油。