泥页岩储层水平井随钻电磁波电阻率测井响应特性

Response characteristics of electromagnetic wave resistivity LWD tool of muddy shale fractured reservoir in horizontal well

 孟昆 刘迪仁 徐观佑 许巍 冯加明

长江大学油气资源与勘探技术教育部重点实验室，湖北 武汉 430100 长江大学地球物理与石油资源学院，湖北 武汉 430100

MOE Key Laboratory of Exploration Technologies for Oil and Gas Resources, Yangtze University, Wuhan 430100, China School of Geophysics and Oil Resources, Yangtze University, Wuhan 430100, China

 基于泥页岩层间页理缝的宏观各向异性电导率模型，利用三维有限元方法模拟了水平井泥页岩裂缝性储层的随钻电磁波电阻率测井仪响应与裂缝孔隙度、裂缝倾角、孔隙流体电阻率、基岩电阻率、围岩电阻率及目的层厚度等因素的关系。结果表明：在水平井泥页岩裂缝性储层中，随钻电磁波电阻率测井响应对裂缝孔隙度、基岩电阻率、围岩电阻率、目的层厚度较灵敏，对裂缝倾角的变化则不太敏感。研究结果有助于泥页岩裂缝性储层的定性分析，可为泥页岩裂缝的评价提供一定理论参考。

 Based on the macroscopic anisotropy conductivity model of muddy shale layer, the response of electromagnetic wave resistivity LWD(logging while drilling) for muddy shale fractured reservoir in horizontal well were simulated by the three-dimensional finite element method. The relationship between the tool response and the fracture porosity, fracture angle, resistivity of fracture fluids, bedrock resistivity, surrounding rock resistivity, and thickness of target strata was simulated. The results show that the tool response is sensitive to fracture porosity, bedrock resistivity, resistivity of fracture fluids, surrounding rock resistivity and thickness of target strata, insensitive to fracture angle in muddy shale fractured reservoir. This study is helpful for qualitative analysis of muddy shale fractured reservoir and can provides theoretical references for evaluation of muddy shale fracture reservoir.

10.6056/dkyqt201804012