层倾角测井资料在储集层构型研究中的应用

将地层倾角测井资料应用干小尺度构型单元研究,提出了一套采用长短窗长两次处理地层倾角测井资料并综合运用处理结果识别不同层次储集层构型的研究方法.探讨了构型研究中地层倾角测井的处理方法与参数要求,确定塔里木盆地HD4油田东河砂岩相关对比法地层倾角处理参数为:0.2 m窗长,0.02 m步长,35°探索角.以处理成果为基础,运用层次分析法研究东河砂岩段储集层构型,将东河砂岩滨岸沉积砂体划分为4类四级构型,12类三级构型及24种岩相单元,并详细分析了储集层构型界面及构型单元的地层倾角测井响应特征.岩相单元在倾角处理成果图上表现为单一矢量模式或模式组合,三级构型单元对应于一系列不同矢量模式的组合,构型界面表现为不同矢量模式的分界面.构型研究成果为油藏数值模拟提供了精细的三维地质模型.并为油藏开发调整提供了地质依据,实践证明取得了很好的开发效果.

Application of diplog data in sandstone reservoir architecture

Different-order reservoir architectures are identified by using the processing results of the diplog of long and short window lengths, which improves the accuracy of reservoir architecture research. Processing methods and parameters of diplog are discussed in the research on reservoir architecture. The diplog processing parameters of the Donghe sandstone in the HD4 oilfield are determined: window length is 0.2 m, step length is 0.02 m, and search angle is 35°. On the basis of diplog tadpole plot, the Donghe sandstone of coast deposit is classified into four kinds of 4th-order reservoir architectures, and twelve kinds of 3rd-order reservoir architectures, and twenty-four kinds of lithofacies units. The response characteristics on diplog of reservoir architecture interfaces and reservoir architecture elements are analyzed in detail. In the diplog tadpole plot, lithofacies units show as single vector model or vector combination, 3rd-order reservoir architectures correspond to a series of different vector groups, and the architecture bounding surfaces represent the interface of two different vector models. The research provides an accurate three-dimensional geologic model for numerical reservoir simulation.