| 核磁共振多指数反演新方法应用 |
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| 引用本文： | Xiao Lizhi,Wang Zhongdong,Liu Tangyan. 核磁共振多指数反演新方法应用[J]. 石油科学(英文版), 2004, 1(1): 19-22 |
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| 作者姓名： | Xiao Lizhi Wang Zhongdong Liu Tangyan |
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| 作者单位： | 中国北京石油大学资源与信息学院,102249 |
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| 摘 要： | 提出一种核磁共振弛豫反演的新算法。将反演结果与采用工业界广泛接受的方法得出的反演结果进行了对比,验证了新方法的优越性。本文详细讨论新方法在岩心分析及实际测井数据处理中的应用。
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| 关 键 词： | 核磁共振 反演 岩心分析 测井 |
| 收稿时间： | 2003-12-19 |
| 修稿时间： | 2003-12-19 |
Application of Multi-Exponential Inversion Method to NMR Measurements |
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| Xiao Lizhi,Wang Zhongdong and Liu Tangyan. Application of Multi-Exponential Inversion Method to NMR Measurements[J]. Petroleum Science, 2004, 1(1): 19-22 |
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| Authors: | Xiao Lizhi Wang Zhongdong Liu Tangyan |
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| Affiliation: | College of Resources & Information, University of Petroleum, Beijing 102249, China;College of Resources & Information, University of Petroleum, Beijing 102249, China;College of Resources & Information, University of Petroleum, Beijing 102249, China |
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| Abstract: | A new multi-exponential inversion method for NMR relaxation signals is presented and tested, which is based on a solid iteration rebuild technique (SIRT). The T2 spectra inversed by the new method are compared with MAP-II results. The T1 and T2 inversion results with different pre-assigned relaxation times and different SNR show that 16 to 64 logarithm equal spaced time constants is better obviously than MAP-II. And in particular, it can ensure the relaxation time distribution when the SNR of the measured signal is very low. The new algorithm has been applied in rock core NMR analysis and NMR logging data process and interpretation. |
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| Keywords: | NMR inversion relaxation core analysis well logging |
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