锦州20-2N构造东营组二下亚段浊积体系特征研究

Turbidity System and Sedimentary Characteristics in the Second Lower Member of Dongying Formation in Jinzhou-20-2N Structure

锦州20-2N构造东营组二下亚段(Ed下2)发育多期浊积扇体,具有十分重要的油气勘探意义。在岩性组合、孔隙度、地震反射及测井相特征分析的基础上,综合工区内钻井实测资料,对锦州20-2N构造东营组二下亚段(Ed下2)浊积体系进行了研究。锦州20-2N构造东营组二下亚段(Ed下2)为深水浊积扇沉积,主要为泥岩、粉砂岩互层,孔隙度发育,生储盖组合良好,有着良好的油气勘探开发前景。

It is of significance for hydrocarbon exploration and development in multi-stage turbidite fans in the second lower member of Dongying Formation in Jinzhou-20-2NStructure.On the basis of turbidite analysis of lithological combination,porosity,seismic reflection,electro-facies,turbidite depositional system and hydrocarbon exploration are studied in combination with practical drilling information in the second lower members of Dongying Formation.The result shows that second lower members of Dongying Formation is deep-water turbidite fan deposit with mudstone,siltstone embedded and high porosity,which is a favourable source-reservoir-seal assemblage and highly prospective for the hydrocarbon exploration.