利用多波地震与测井数据联合反演预测煤岩的坚固性  

Coal hardness prediction using joint inversion of multi-wave seismic data and logging

作　　者：芦俊[1] 王赟[1,2] 石瑛[3] 

机构地区：[1]中国地质大学(北京)能源学院,海相储层演化与油气富集机理教育部重点实验室,北京100083 [2]中国科学院地球化学研究所,贵阳550002 [3]中国科学院地质与地球物理研究所,北京100029

出　　处：《地球物理学报》2011年第11期2967-2972,共6页Chinese Journal of Geophysics

基　　金：中央高校基本科研业务费专项资金(2011YYL043);国家自然科学基金(41104084);中国石油科技创新基金项目(2011D-5006-0303)联合资助

摘　　要：基于煤岩的坚固性、变形模量以及纵、横波速度之间的岩石力学规律,提出用多波地震与测井数据的联合反演定量化预测煤岩的坚固性.根据煤田三维三分量地震采集的特点,建立了PP波与PS波平均入射角部分叠加道集的井约束反演流程;利用煤岩的坚固性系数与变形模量之间的换算关系对目标煤层的坚固性系数空间变化规律进行预测,并划分可能发生煤与瓦斯突出的区域.实际应用结果表明该方法可以为煤矿的安全生产提供有利的评价参数.Based on the law of rock mechanics among the hardness, deformation modulus and P- and S-waves＇ velocities of coal rock, quantitative prediction method of the coal hardness using joint inversion of multi-wave seismic data and logging is put forward. According to the characteristics of 3D3C seismic acquisition, the well constrained partial poststack gather inversion flow of PP- and PS-wave at average incident angles is established. The space variant hardness law of target coal strata is predicted according the transformation relationship between the hardness coefficients and the deformation modulus of the coal, and the area where coal and gas will outburst most probably is divided. Application result shows that the method could be selected to provide valuable evaluation parameter for the safe production in coal mine.

关 键 词：多波 联合反演 坚固性 变形模量 瓦斯 

分 类 号：P631[天文地球—地质矿产勘探]