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埕北凹陷沙三下段地层接触关系复杂,储层埋藏深,岩性变化复杂,但储层与围岩的波阻抗差较大,因此采用测井约束反演方法进行储层描述。本文详细分析了储层的基础地球物理特征、测井曲线标准化、建立地质模型和反演参数调节等关键技术环节,结合反演结果,认为工区南部为有利目标区域。
There are complex relationships between the strata in the lower part of the third member of Shahejie depression in the Chengbei depression. The reservoir is buried deeply and the lithology changes complicatedly. However, the impedance difference between the reservoir and the surrounding rock is relatively large. Therefore, the logging constrained inversion method is used to describe the reservoir. This paper analyzes in detail the basic geophysical characteristics of reservoirs, the standardization of well logs, the establishment of geological models and inversion of key parameters and other key technical aspects. Combined with the inversion results, it is considered that the southern part of the work area is a favorable target area.