利用地震AVO反演预测煤与瓦斯突出区  

Seismic AVO Inversion and Coal-gas Outburst Area Prediction

作　　者：胡朝元[1,2] 彭苏萍[1] 杜文凤[1] 勾精为[1,2] 

机构地区：[1]中国矿业大学煤炭资源与安全开采国家重点实验室,北京100083 [2]中国煤炭地质总局地球物理勘探研究院,河北涿州072750

出　　处：《天然气地球科学》2011年第4期728-732,共5页Natural Gas Geoscience

基　　金：国家"973"项目(编号:2009CB219603;2009CB72460;2010CB226800)联合资助

摘　　要：基于地震AVO反演原理和方法,针对已知的煤与瓦斯突出点进行了AVO反演。单点分析发现,煤与瓦斯突出点处的偏移距—振幅拟合关系的截距和梯度绝对值比非突出点大,表明煤与瓦斯突出点能引起地震AVO响应异常。依据突出点处的地震AVO响应特征,通过交会分析和综合指标分析,可实现对煤与瓦斯突出区的预测。但是,作为一项新的预测技术,在实际应用中要结合区域地质综合分析,以避免AVO反演结果的多解性。Based on principle and method of seismic AVO inversion, the inversion for some known coal-gas outburst points is integrated. Single point analysis shows that the absolute AVO intercept and gradient at the coal-gas outburst point is greater than that at the non-outburst point,suggesting that the AVO abnormity would be resulted from coal-gas outburst points. According to AVO response at the coal-gas outburst points, the prediction of coal-gas outburst area is gotten by AVO crossplot and integrative index. As a new predicting technology, the comprehensive analysis of the regional geology should be involved practically so as to avoid the multi-solutions of AVO inversion.

关 键 词：煤与瓦斯突出 AVO反演 地震勘探 

分 类 号：TE132.2[石油与天然气工程—油气勘探]