高分辨率反演方法及其在核磁共振测井数据处理中的应用  

High-resolution inversion and its application in nuclear magnetic resonance (NMR) logging data processing

作　　者：翁爱华[1] 李舟波[1] 陆敬安[1] 莫修文[1] 

机构地区：[1]吉林大学应用地球物理系

出　　处：《石油地球物理勘探》2003年第2期208-212,共5页Oil Geophysical Prospecting

基　　金：国家自然科学基金项目 (编号 :498740 2 8)

摘　　要：本文对核磁共振测井数据的高分辨率弛豫谱反演技术及实际应用效果进行了讨论。首先 ,介绍了基于梭状函数抽样的高分辨率弛豫谱反演方法的原理 ,并用该方法对岩心核磁数据进行了弛豫谱分解 ,讨论了弛豫谱抽样间隔对该方法的影响 ;其次 ,高分辨率弛豫反演结果和压汞结果的比较证明了弛豫谱反演方法的高分辨率优点。实际核磁测井数据分别来自砂泥岩井段的高泥质含量与低泥质含量两个层位 ,通过与常规弛豫谱反演结果的对比可以发现 ,采用高分辨率的弛豫谱反演技术能够更加精细地给出孔隙流体的弛豫分布 。The paper mainly discussed the applied effects of high resolution inversion of relaxation spectrum in nuclear magnetic resonance (NMR) logging data.First, the paper introduced the principle of the method,discussed the influence of sample interval of relaxation spectrum in the method and compared the method's result with the result from core mercury injection.Then,the high resolution inversion is applied to real NMR logging data which come from two layers containing high and low shale content separately in a same borehole.It can be found from comparison with ordinary inversion result of relaxation spectrum that the high resolution inversion of relaxation spectrum can give more detail of pure fluid relaxation distribution behind the echo trains,resulted in true high resolution relaxation spectrum.

关 键 词：高分辨率 反演方法 核磁共振测井 数据处理 弛豫谱反演 

分 类 号：P631.813[天文地球—地质矿产勘探] P631.84[天文地球—地质学]