| 核磁共振多回波串联合反演方法 |
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| 引用本文： | 谢然红,肖立志,刘家军,邓克俊.核磁共振多回波串联合反演方法[J].地球物理学报,2009,52(11):2913-2919. |
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| 作者姓名： | 谢然红 肖立志 刘家军 邓克俊 |
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| 作者单位： | 1.油气资源与探测国家重点实验室，中国石油大学(北京), 北京 102249;2.地球探测与信息技术北京市重点实验室，中国石油大学(北京)，北京 102249 |
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| 基金项目： | 国家自然科学基金项目，中国石油股份创新基金，油气资源与探测国家重点实验室课题 |
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| 摘 要： | 提出一种核磁共振多回波串数据联合反演方法，分别对核磁共振孔隙度测量的两组回波串数据、变等待时间多回波串数据以及变回波间隔多回波串数据进行了处理.结果表明，这样处理得到的一维核磁共振T2分布不但连续，而且能够揭示短横向弛豫组分的细微特征，提高了核磁共振孔隙度的精度.处理变等待时间或变回波间隔下的多回波串数据，可以得到孔隙流体的 (T2, T1)或(T2, D) 二维核磁共振分布图.与一维核磁共振T2分布相比，二维核磁共振提高了识别流体的效果.
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| 关 键 词： | 核磁共振 测井 数据反演 孔隙度 流体识别 |
| 收稿时间： | 2009-5-26 |
| 修稿时间： | 2009-9-25 |
A method for multiple echo trains jointing inversion of NMR relaxation measurements |
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| XIE Ran-Hong,XIAO Li-Zhi,LIU Jia-Jun,DENG Ke-Jun.A method for multiple echo trains jointing inversion of NMR relaxation measurements[J].Chinese Journal of Geophysics,2009,52(11):2913-2919. |
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| Authors: | XIE Ran-Hong XIAO Li-Zhi LIU Jia-Jun DENG Ke-Jun |
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| Institution: | 1.State Key Laboratory of Petroleum Resource and Prospecting, China University of Petroleum (Beijing), Beijing 102249, China;2.Key Laboratory of Earth Prospecting and Information Technology, China University of Petroleum (Beijing), Beijing 102249, China |
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| Abstract: | A method for multiple echo trains jointing inversion of NMR measurement data sets is suggested in this paper.The availability of the method is proved by processing NMR porosity measurements data,multiple echo trains data sets with variable waiting time and variable echo spacing.The one-dimensional T_2 distribution obtained by this method is not only smooth,it also shows subtle features in the short relaxation time.The accuracy of NMR porosity is improved.(T_2,T_1) or (T_2,D)two-dimensional distributions can be obtained by processing multiple echo trains with variable waiting time or variable echo spacing respectively.The results demonstrate the advantage of using two-dimensional NMR for fluid typing over conventional T_2 distribution. |
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| Keywords: | NMR Logging Data inversion Porosity Fluids typing |
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