昆特依气田2区块基岩裂缝预测及孔—缝叠置分析

    Bedrock fracture prediction and pore-fracture overlay analysis: A case study of the Kun 2 block in the Kunteyi gas field

    • 摘要: 针对柴达木盆地昆特依气田昆2区块基岩目的层中的储层储集空间发育溶蚀孔和裂缝认识不清楚的问题,利用地震资料分选5大类12种属性分别对基岩储层进行裂缝预测和对比分析,结果表明:最大似然属性与井资料吻合好,纵横向分辨率高,优于曲率、相干、不连续和相似性类属性。同时,采用溶孔-裂缝叠合分析法,有效预测了基岩储层分布有利区,为后续开发井位部署提供了依据。

       

      Abstract: This study aims to determine the development of dissolution pores and fractures in the target bedrock reservoir space in the Kun 2 block in the Kunteyi gas field within the Qaidam Basin. The seismic data were classified into 12 attributes in five major categories for fracture prediction and comparative analysis of bedrock reservoirs. The results show that the maximum likelihood attribute aligned highly with the well data, with high vertical and horizontal resolution, superior to curvature, coherence, discontinuity, and similarity attributes. Moreover, the favorable areas for the distribution of bedrock reservoirs were effectively predicted using the dissolution pore-fracture overlay analysis method, providing a basis for subsequent exploitation well deployment.

       

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