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孙虎—前磨头地区位于渤海湾盆地冀中坳陷东南角 ,其特殊的构造位置及演化特征决定了其对油气生成和保存并不十分有利。主要的油源层为沙三段和孔二段 ,局部地区沙四段具生烃能力。孔二段和沙四段有机质丰度低、类型差 ,尽管成熟度较高 ,但生烃潜力有限 ;沙三段有机质丰度相对较高、类型较好 ,但成熟度较低。烃源岩综合评价结果表明 ,该区勘探前景不佳。
The former ground area is located in the southeast corner of the Jizhong depression in the Bohai Bay basin. Its special tectonic location and evolutionary characteristics determine that it is not very favorable for hydrocarbon generation and preservation. The main oil source layer is Es3 and Kong2 Member. In some areas, Es4 has hydrocarbon generation ability. The organic matter abundance is low and the type is poor in the second member and the fourth member of Shahejie Formation. Although the maturity is high, the potential for hydrocarbon generation is limited. The organic matter abundance in the third member of Shahejie Formation is relatively high, but the maturity is lower. The comprehensive evaluation of source rock shows that exploration prospect is not good in this area.