A new method for NMR echo data inversion constrained by priori information

摘要：

　　Echo data inversion is the foundation of nuclear magnetic resonance (NMR) logging application.But the inversion precision needs to be improved especially for the short transverse relaxation times T2 in unconventional reservoir.To solve this problem, a new method (ILT+) for NMR echo data inversion constrained by priori information is presented in this paper.At first,integral transform functions are chosen to extract priori information directly from NMR echo trains.Then, the new inversion objective function constrained by priori information is built and solved.The numerical simulation results showed that the new method constrained by two kinds of priori information synthesized the advantages of the new method constrained by single priori information and improved the inversion accuracy of T2 spectrum at short relaxation times compared with traditional inversion method (ILT).

关键词： nuclear magnetic resonance echo data inversion integral transform priori information short relaxation times

作者: Guowen Jin Ranhong Xie Jiangfeng Guo Mi Liu

作者单位: State Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum, Beijing 102249, China;Key Laboratory of Earth Prospecting and Information Technology, China University of Petroleum, Beijing 102249, China

会议类型: 国际会议

会议名称: 第十届中俄测井国际学术研讨会

会议地点: 西安

会议语种:英文

页码: 279-288

在线出版日期: 2017-09-20（万方平台首次上网日期，不代表论文的发表时间）