摘要
针对三维感应测井问题,提出了利用三维感应测井分量视电导率确定地层(TI地层)各向异性指数因子(水平电导率与垂直电导率之比)的计算与确定方法.论文分别给出了图版法和牛顿迭代计算方法,介绍了地层各向异性指数因子的图板制作及利用图版确定地层各向异性指数因子的方法;导出了地层视电导率偏导计算方程,利用非线性方程组的牛顿迭代解法实现了地层各向异性指数因子的数值计算,还给出了数值算例,计算结果与地层模型获得了很好的一致性,表明本方法对分析地层的各向电导特性及测井资料解释应用将具有重要的借鉴和参考意义.
For the three-dimensional tri-axial induction logging, an algorithm was proposed to use for the component apparent conductivity of three-dimensional tri-axial induction logging to determine formation （TI formation） anisotropy index factor （horizontal and vertical conductivity ratio）. We gave chart method and Newton iteration method in this paper. The process of anisotropy index factor chart and method for determining anisotropy index factor was introduced. Apparent conductivity partial derivative wave equation was derived. The anisotropy index factor was calculated by using the Newton iterative method for solving nonlinear equations. Then, model study was given, calculating results are the same as the formation model. It is shown that this method is important to analysis anisotropic conductivity and well logging interpretation.
出处
《地球物理学进展》
CSCD
北大核心
2015年第3期1298-1303,共6页
Progress in Geophysics
基金
国家十二五重大专项(2011Zx05020-004)电阻率多维成像测井技术与装备
北京印刷学院校重点项目(E-a-2013-19)联合资助
关键词
地层各向异性指数因子
视电导
水平电导率
anisotropy index factor of formation
apparent conductivity
horizontal conductivity
