中国石油大学学报（自然科学版）2013，Vol.37Issue(1)：61-69,9.DOI:10.3969/j.issn.1673-5005.2013.01.010
采用混合法和递推矩阵算法模拟层状介质中随钻电磁波电阻率测量仪器的响应
Simulating electromagnetic wave resistivity MWD tool's response in stratified media using hybrid method and recursive matrix algorithm
摘要
Abstract
The hybrid method and the recursive matrix algorithm were combined to compute the electromagnetic wave resistivity MWD tool's response in cylindrically symmetrical 2-D stratified media. A matrix equation group for ascertaining all the coefficients was obtained according to the continuity condition of electromagnetic fields at the interfaces, which can be solved rapidly via a recursive algorithm. Thus the tedious mode of up-going and down-going waves was abandoned and the appearance of exponentially increasing terms has been prevented. The influence of borehole, invasion and collar groove on electromagnetic wave resistivity MWD tool's response was analyzed by the combined hybrid and recursive matrix method. The results show that the influence of drilling fluid on the receiver coil's response is weakened since the space occupied by the drilling fluid within the borehole is reduced by the existence of metal drilling collar. The influence of the collar groove on the MWD tool's phase difference and amplitude ratio can be neglected, but the collar groove has exerted distinct influence on the single receiver coil's phase and amplitude. The collar groove's influence on amplitude is more obvious than that on phase.关键词
电测井/混合法/递推矩阵算法/电磁波电阻率/随钻测量/层状介质Key words
electric logging/ hybrid method/ recursive matrix algorithm/ electromagnetic wave resistivity/ measurement-while-drilling (MWD) / stratified media分类
天文与地球科学引用本文复制引用
魏宝君,张克,欧永峰,武杨..采用混合法和递推矩阵算法模拟层状介质中随钻电磁波电阻率测量仪器的响应[J].中国石油大学学报（自然科学版）,2013,37(1):61-69,9.基金项目
教育部新世纪优秀人才支持计划(NCET-10-0767) （NCET-10-0767）
中央高校基本科研业务费专项(10CX05006A) （10CX05006A）
