新型方位侧向电阻率成像随钻测井仪探测特性分析  

Numerical Analysis of Detection Characteristics of a New Azimuth Lateral Resistivity Imaging Logging Tool While Drilling

作　　者：陈思嘉 陈刚[1] 尤嘉祺 阳质量 许月晨 唐章宏 付浩 CHEN Sijia;CHEN Gang;YOU Jiaqi;YANG Zhiliang;XU Yuechen;TANG Zhanghong;FU Hao(Logging Co.Ltd.,CNPC,Xi’ an,Shaanxi 710021,China;Beijing Wise Time Technology Development Co.,Ltd.,Beijing 100089,China)

机构地区：[1]中国石油集团测井有限公司,陕西西安710021 [2]北京唯智佳辰科技发展有限责任公司,北京100089

出　　处：《西安石油大学学报（自然科学版）》2021年第4期91-97,共7页Journal of Xi’an Shiyou University（Natural Science Edition）

基　　金：国家科技重大专项“大型油气田及煤层气开发”(2017ZX05019-002)。

摘　　要：为提高随钻侧向电阻率成像仪器测量精度,设计了一种新型方位电极结构,通过增加独立的监督电极,消除仪器极板与泥浆电阻率间的接触阻抗,有效降低了测量误差,并利用多尺度自适应网格剖分技术,基于三维有限元理论,采用高斯积分方法计算了新型方位侧向电阻率成像随钻测井仪的探测特性,分析了各种环境因素的影响,为后续测井资料解释奠定了理论基础。In order to improve the measurement accuracy of lateral resistivity imaging logging tool while drilling,a new azimuth electrode structure is designed.By adding an independent monitoring electrode,the contact impedance between instrument plate and mud is eliminated,and the measurement error is effectively reduced.Based on three-dimensional finite element theory and multi-scale adaptive mesh generation technology,the detection characteristics of the new azimuth lateral resistivity imaging LWD tool are calculated by using the Gauss integral method,and the influences of various environmental factors on its detection characteristics are analyzed,which lays a theoretical foundation for the subsequent interpretation of logging data.

关 键 词：监督电极 环状电极 多尺度网格 探测特性 

分 类 号：TE927[石油与天然气工程—石油机械设备]