|
|
【答案】应助回帖
oven1986: 检索EPI+1, 感谢你的应助！ 2013-10-13 16:53:48
Accession number: 20131016087632
Title: Simulating electromagnetic wave resistivity MWD tool's response in stratified media using hybrid method and recursive matrix algorithm
Authors: Wei, Bao-Jun1, 2 Email author weibj@upc.edu.cn; Zhang, Ke1; Ou, Yong-Feng1; Wu, Yang1
Author affiliation: 1 College of Science in China University of Petroleum, Qingdao 266580, China
2 Key Laboratory of New Energy Physics and Material Science in Universities of Shandong, China University of Petroleum, Qingdao 266580, China
Corresponding author: Wei, B.-J. (weibj@upc.edu.cn)
Source title: Zhongguo Shiyou Daxue Xuebao (Ziran Kexue Ban)/Journal of China University of Petroleum (Edition of Natural Science)
Abbreviated source title: Zhongguo Shiyou Daxue Xuebao (Ziran Kexue Ban)
Volume: 37
Issue: 1
Issue date: February 2013
Publication year: 2013
Pages: 61-69
Language: Chinese
ISSN: 16735005
Document type: Journal article (JA)
Publisher: University of Petroleum, China, Shandong, Dongying 257061, 257062, China
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.
Number of references: 15
Main heading: Drill collars
Controlled terms: Algorithms - Boring - Drilling fluids - Electric logging - Electromagnetic fields - Electromagnetic waves - Matrix algebra - Well drilling
Uncontrolled terms: Amplitude ratios - Continuity conditions - Hybrid method - Matrix equations - Measurement while drillings - Phase difference - Receiver coil - Recursive matrix - Recursive matrix methods - Stratified media
Classification code: 921 Mathematics - 723 Computer Software, Data Handling and Applications - 711 Electromagnetic Waves - 921.1 Algebra - 701 Electricity and Magnetism - 512.1.2 Petroleum Deposits : Development Operations - 511.2 Oil Field Equipment - 604.2 Machining Operations
DOI: 10.3969/j.issn.1673-5005.2013.01.010
Database: Compendex
Compilation and indexing terms, © 2013 Else |
|
回复此楼