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顺北41井区位于顺北4号断裂带中段，断裂带分段多、活动强，整体以拉张-平移断裂样式为主，断裂带内岩石破碎程度高，具有“横向分段、段内分隔、非均质性强”的特征，因此断裂储集体内部结构复杂，储集体连通性判断难度较大。本文通过碳酸盐岩断控储集体三维雕刻划分3个油气单元，各单元建立三维地质网格模型，网格内聚类三维数据体属性，通过搜索几何形态相同或相似特征，实现微立方体细化地质体计算单元。三维地质网格内嵌孔隙度体和敏感属性体，通过有效孔隙度和微裂缝网格计算，判断储集体内部连通性，再利用井间干扰试井结果进行验证，将顺北41井区3个油气单元再细化分为4个连通性井组。本次研究为油气的高效勘探开发提供了有利的依据。
Abstract：The Shunbei 41 well area is located in the middle section of the Shunbei No.4 fault zone. The fault zone is characterized by many fault segments and strong activity. The whole structure style is dominated by the tensile-translational fault. Rocks in the fault zone are highly broken and have the characteristics of “transverse segmentation, intra-segment separation and strong heterogeneity”. Therefore, the internal structure of the fault-controlled reservoir is complex, making it difficult to determine the connectivity of the reservoir. In this paper, three oil and gas units are divided by three-dimensional engraving of carbonate fault-controlled reservoirs. Each unit establishes a three-dimensional geological grid model, within which clustered three-dimensional data body attributes are used to search for identical or similar geometric features, in order to achieve refinement of geological computation units into micro-cubes. In this paper, the 3D geological grid is embedded with porosity and sensitive attribute body. Through the calculation of effective porosity and micro-fracture grid, the internal connectivity of the reservoir is assessed. The results are further validated by inter-well interference testing. Based on that, the three oil and gas units in Shunbei 41 well area are further subdivided into four connected well groups. This study provides a favorable statement for efficient exploration and development of oil and gas.
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基本信息:
中图分类号:P618.13;P631.4
引用信息:
[1]马乃拜,龚伟,马新平,等.顺北41井区断控储集体三维雕刻及连通性评价[J].工程地球物理学报,2025,22(06):695-704.
基金信息:
中国石化科技部项目(编号：P24135)