地震多属性拟测井多参数反演预测煤层顶底板岩石赋水性研究  

A Study on Coal Roof and Floor Rock Aquosity Prediction through Seismic Multiattribute Pseudolog Multiparameter Inversion

作　　者：汪洋[1] 

机构地区：[1]中国煤炭地质总局地球物理勘探研究院,河北涿州072750

出　　处：《中国煤炭地质》2012年第4期56-61,共6页Coal Geology of China

摘　　要：通过实例介绍利用地震多属性与测井成果联合反演,获得表征煤层顶底板岩石赋水性强弱的拟测井参数体,进而对其进行赋水性分析:首先利用伽马-伽马测井及视电阻率曲线重构岩石视孔隙度曲线,以获得研究区岩石视孔隙度成果;利用测井成果合成地震记录进行精细的地震地质层位标定及采区地震数据的保幅、保真处理;在测井成果约束下进行地震多属性拟测井多参数反演,利用反演成果的高低异常区评价煤层顶底板赋水强弱分区——低波阻抗、低电阻率、高孔隙度分布的区域对应赋水性强的区域,反之为赋水性弱的区域。Introduced using seismic multiattribute and well logging result and combined with inversion to obtain pseudolog parameter mass can characterize coal roof and floor rock aquosity,and then proceed to carry out aquosity analysis.Firstly using the gamma-gamma log and apparent resistivity curve to reconstruct rock apparent porosity curves and obtain study area rock apparent porosity results.Using logging result synthetic seismic records carry out precise seismic-geologic horizon demarcation and winning district seismic data preserved amplitude and fidelity process.Under the restriction of logging results carries out seismic multiattribute pseudolog multiparameter inversion,and using high and low abnormal places from inversion results to evaluate coal roof and floor rock aquosity partition： the regions with low natural impedance,low resistivity and high porosity are corresponding to strong aquosity area,on the other hand weak aquosity area.

关 键 词：赋水性 煤层顶底板 地震多属性反演 测井曲线重构 三维地震 

分 类 号：P631.81[天文地球—地质矿产勘探]