摘要
应用数值模式匹配理论计算了由任意多个轴对称多层径向不均匀介质叠加而成的地层中的普通电阻率测井响应，这种方法把二维数值问题转化为一维解析解和一维数值解的结合，因此大大减少了计算量，文中给出了反射矩阵和透射矩阵的递推公式，还提出了一种新的基函数．计算结果表明，该方法与有限元法相比具有运算效率高的优点．这种快速算法将对横向测井资料的反演在现场测井解释中应用有积极的推动作用．
The response of the normal resistivity logging in the axially symmetrical media, which is overlayed by the formations with the multi-cylindrical layers in radial direction. is computed by the Numerical Mode-matching(NMM) theory. Because the NMM method transfer the 2-D numarical problem into the combination of the 1-D numerical problem with the 1-D analytic solution. so it reduces the computation quantity greatly. The recursive algorithm of the reflection and transmission operators is given. and a new basic function is also given in the paper. Comparing with the FEM method, the NMM method is efficient, and will improve the inversion of the lateral logs in oilfield well logging interpretation.
出处
《石油大学学报（自然科学版）》
CSCD
1996年第2期23-29,共7页
Journal of the University of Petroleum,China(Edition of Natural Science)
基金
国家"八五"科技攻关项目
关键词
数值模式匹配
电阻率测井
基函数
Numerical mode-matching theory
Resistivity logging
Basic function
