水平井各向异性地层双侧向测井响应数值模拟  

Numerical Simulation of Dual Laterolog Response to Anisotropic Formation in Horizontal Wells

作　　者：夏培[1] 刘迪仁[1] 万文春[1] 闫林辉[1] 张蕾[1] 

机构地区：[1]油气资源与勘探技术教育部重点实验室(长江大学)长江大学地球物理与石油资源学院,湖北荆州434023

出　　处：《石油天然气学报》2011年第8期104-106,2,共3页Journal of Oil and Gas Technology

基　　金：国家自然科学基金项目(40774073);国家大学生创新性实验项目(A091048917)

摘　　要：利用三维有限元法对水平井中各向异性地层的双侧向测井响应进行了数值模拟,分别分析了地层各向异性系数、围岩层厚、泥浆侵入对各向异性地层双侧向测井响应的影响。结果表明:水平井中各向异性地层双侧向测井响应主要受到岩层垂向电阻率影响;目的层高阻时各向异性地层受围岩层厚影响大,目的层低阻时各向同性地层受围岩层厚影响大;与各向同性地层相比,泥浆侵入对各向异性地层双侧向测井响应影响更加明显和复杂。The numerical simulation was carried out on dual laterolog response to anisotropic formation by 3-D finite element method.The features of dual laterolog response changing with the anisotropy coefficient λ,thickness of surrounded bed and mud invasion were discussed.The study result shows the dual laterolog response in horizontal well is changed seriously with the vertical resistivity.The influence of thickness of surrounded bed emerges gradually along with resistivity of the bed of interest and anisotropy coefficient λ.It is also revealed that mud invasion makes great impact on dual laterolog responses,especially for the anisotropic formation.

关 键 词：双侧向测井 水平井 各向异性 有限元 数值模拟 

分 类 号：P631.84[天文地球—地质矿产勘探]