煤炭地下气化区高密度三维地震勘探技术研究  

A Study on High Density 3D Seismic Prospecting Technology Used in Underground Coal Gasification

作　　者：张兴平[1] 王秀荣[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》2010年第8期1-4,共4页Coal Geology of China

摘　　要：地下煤层气化的燃烧范围,气化燃烧热力影响边界、形态、方向,气化区冒落带的发展高度及气化煤层裂隙发育程度,是开展煤炭地下气化工程迫切需要解决的问题。基于煤炭地下气化工程试验区地震地质情况,从地震响应入手,在分析煤炭地下气化后地震波场响应特征的基础上,提出了运用高密度三维地震采集技术结合全三维地震属性解释技术,高精度识别煤炭地下气化燃烧范围、气化热力影响边界的方法。实际勘探成果表明,本方法地震成像清晰,预测精度高,与钻探结果吻合较好。The burning extent,heating power influencing boundary,configuration,and direction,gasification area caving zone height and coal seam fissure development extent after gasification are issues need to be solved urgently in the launching of underground coal gasification project.Based on test region seismic-geologic condition,start with seismic response,analyzed seismic wave field response characteristics after underground coal gasification put forward a method to use high density 3D seismic data acquisition technology combined with fully 3D seismic attribute interpretation technology to identify burning extent and heating power influencing boundary with high accuracy.The practical prospecting results have demonstrated that by the use of the method,seismic images are clearer;prediction precision is higher and closely agreed with drilling results.

关 键 词：煤炭地下气化 高密度三维地震 全三维地震属性 

分 类 号：P631.4[天文地球—地质矿产勘探]