中国石油大学学报（自然科学版）2016，Vol.40Issue(2)：59-69,11.DOI:10.3969/j.issn.1673-5005.2016.02.007
一用柱状成层各向异性介质的并矢Green函数模拟多分量感应测井仪器的响应
Simulating responses of multi-component induction logging tools by dyadic Green's functions in cylindrically stratified anisotropic media
摘要
Abstract
An analytical expression of dyadic Green's functions in cylindrically stratified anisotropic media ( transversely iso-tropic media) was obtained using a recursive method. The expression can be used to simulate the response of an arbitrary point source ( including electric source and magnetic source) in cylindrically stratified anisotropic formations. The expression can be applied to any number of formation layers, and with the source location and field location in any of the layers. Using the method, the responses of multi-component induction logging tools with a metal mandrel and an insulating protection layer were simulated in anisotropic formations with a borehole and an invasion zone. The shape of each component's coils was taken into account in order to increase the simulating precision, and the metal mandrel was taken as a layer whose conductivity can be both finite and infinite. The simulation results show that the response of coplanar coil system has entirely different charac-teristics from that of coaxial coil system:the response of coplanar coil system is often more complex and more sensitive to the change in drilling liquid conductivity, invasion zone's conductivity, formation conductivity, and formation anisotropy. These parameters may even cause sign flip in the response under many conditions. Furthermore, since the same response of copla-nar coil system may be produced by entirely different formation conductivities in isotropic or anisotropic formations, it will be-come much complicated to interpret or process the measured data.关键词
多分量感应测井/并矢Green函数/柱状成层各向异性介质/金属心轴/侵入带Key words
multi-component induction logging/dyadic Green's functions/cylindrically stratified anisotropic media/metal mandrel/invasion zone分类
天文与地球科学引用本文复制引用
魏宝君,王成园,党峰,常欣莉,曹景强..一用柱状成层各向异性介质的并矢Green函数模拟多分量感应测井仪器的响应[J].中国石油大学学报（自然科学版）,2016,40(2):59-69,11.基金项目
国家科技重大专项(2016ZX05019007) （2016ZX05019007）
中央高校基本科研业务费专项资金(15CX05047A) （15CX05047A）
中国石油天然气集团公司科学研究与技术开发项目(2014D-4018) （2014D-4018）
