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本文所研究区域长7储层属于深湖和半深湖亚相浊积微相,构造发育不明显,主要以鼻状构造为主,孔隙度和渗透率较低,属于低孔超低渗储层。该区长7储层隔层和夹层较发育,砂体的平面展布受沉积相的控制,孔隙度和渗透率的差异较大,但是高孔、高渗带分布具有一定的方向性,研究区宏观非均质性较强。
The Chang 7 reservoir belongs to the sub-facies turbidimetric microfacies in the deep and semi-deep lakes. The structural development is not obvious, mainly in the nose-shaped structure, with low porosity and permeability, belonging to the low porosity and ultra-low permeability reservoir Floor. The reservoir and interlayer of reservoir 7 in this area are well developed. The plane distribution of sand body is controlled by sedimentary facies, and the difference in porosity and permeability is large. However, the distribution of high porosity and permeability zones has certain directionality. District macro-heterogeneity is strong.