利用地震AVO反演预测煤与瓦斯突出区
|
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.
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.
引文
[1]He Jishan,Lv Shaolin.Outburst of Geophysical Research[M].Beijing:Coal Industry Press,1999.[何继善,吕绍林.瓦斯突出地球物理研究[M].北京:煤炭工业出版社,1999.]
[2]Liang Handong.The chemical nature of coal and gas outburst[C]//The Mine Geological Assurance System for China′sHigh-efficiency Coal Mines.Beijing:Coal Industry Press,2001:147-157.[梁汉东.煤与瓦斯突出的化学本质[C]//煤矿安全高效开采地质保障系统.北京:煤炭工业出版社,2001:147-157.]
[3]Brian H Russell,Ken Hedlin,Fred J Hilterman,et al.Fluid-property discrimination with AVO:A Biot-Gassmann per-spective[J].Geophysics,2003,68(1):29-39.
[4]He Chen,John P Castagna,Raymon L Brown,et al.Three-pa-rameter AVO crossplotting in anisotropic media[J].Geophys-ics,2001,66(5):1359-1363.
[5]Chuck Skidmore,Mike Kelly,Ray cotton.AVO inversion,part2:Isolating rock property contrasts[J].The LeadingEdge,2001,20(4):425-428.
[6]Chen Jianyang,Zhang Zhijie,Yu Xinghe.AVO technique inthe application and problem of hydrate research[J].NaturalGas Geoscience,2005,16(1):123-126.[陈建阳,张志杰,于兴河.AVO技术在水合物研究中的应用及应注意的问题[J].天然气地球科学,2005,16(1):123-126.]
[7]Mo Wuling,Wu Chaodong.Multi-azimuthal AVO analysis of frac-tured reservoirs[J].Natural Gas Geoscience,2007,18(6):813-818.[莫午零,吴朝东.裂缝介质中多方位AVO特征分析技术及应用举例[J].天然气地球科学,2007,18(6):813-818.]
[8]Fu Xuehai,Qin Yong.Coalbed Methane Reservoir Permeabili-ty of Multiphase Medium Theory and Method of Prediction[M].Xuzhou:China University of Mining and TechnologyPress,2003.[傅雪海,秦勇.多相介质煤层气储层渗透率预测理论与方法[M].徐州:中国矿业大学出版社,2003.]
[9]Gassaway G S,Richgels H J.Sample:Seismic amplitude meas-urement for primary lithology estimation[C]//53rdAnn.In-ternat.Mtg.,Soc.Expl.Geophys,Expanded Abstracts.1983:610-613.
[10]Smith G C,Gidlow P M.Weighted stacking for rock propertyestimation and detection of gas[J].Geophysical Prospecting,1987,35:993-1014.
[11]Gao Yunfeng.Application of AVO Technique in Prediction ofCoalbed Gas Outburst Region[D].Beijing:China Universityof Mining and Technology,2003.[高云峰.AVO技术在煤层瓦斯突出区预测中的应用[D].北京:中国矿业大学,2003.]
[2]Liang Handong.The chemical nature of coal and gas outburst[C]//The Mine Geological Assurance System for China′sHigh-efficiency Coal Mines.Beijing:Coal Industry Press,2001:147-157.[梁汉东.煤与瓦斯突出的化学本质[C]//煤矿安全高效开采地质保障系统.北京:煤炭工业出版社,2001:147-157.]
[3]Brian H Russell,Ken Hedlin,Fred J Hilterman,et al.Fluid-property discrimination with AVO:A Biot-Gassmann per-spective[J].Geophysics,2003,68(1):29-39.
[4]He Chen,John P Castagna,Raymon L Brown,et al.Three-pa-rameter AVO crossplotting in anisotropic media[J].Geophys-ics,2001,66(5):1359-1363.
[5]Chuck Skidmore,Mike Kelly,Ray cotton.AVO inversion,part2:Isolating rock property contrasts[J].The LeadingEdge,2001,20(4):425-428.
[6]Chen Jianyang,Zhang Zhijie,Yu Xinghe.AVO technique inthe application and problem of hydrate research[J].NaturalGas Geoscience,2005,16(1):123-126.[陈建阳,张志杰,于兴河.AVO技术在水合物研究中的应用及应注意的问题[J].天然气地球科学,2005,16(1):123-126.]
[7]Mo Wuling,Wu Chaodong.Multi-azimuthal AVO analysis of frac-tured reservoirs[J].Natural Gas Geoscience,2007,18(6):813-818.[莫午零,吴朝东.裂缝介质中多方位AVO特征分析技术及应用举例[J].天然气地球科学,2007,18(6):813-818.]
[8]Fu Xuehai,Qin Yong.Coalbed Methane Reservoir Permeabili-ty of Multiphase Medium Theory and Method of Prediction[M].Xuzhou:China University of Mining and TechnologyPress,2003.[傅雪海,秦勇.多相介质煤层气储层渗透率预测理论与方法[M].徐州:中国矿业大学出版社,2003.]
[9]Gassaway G S,Richgels H J.Sample:Seismic amplitude meas-urement for primary lithology estimation[C]//53rdAnn.In-ternat.Mtg.,Soc.Expl.Geophys,Expanded Abstracts.1983:610-613.
[10]Smith G C,Gidlow P M.Weighted stacking for rock propertyestimation and detection of gas[J].Geophysical Prospecting,1987,35:993-1014.
[11]Gao Yunfeng.Application of AVO Technique in Prediction ofCoalbed Gas Outburst Region[D].Beijing:China Universityof Mining and Technology,2003.[高云峰.AVO技术在煤层瓦斯突出区预测中的应用[D].北京:中国矿业大学,2003.]
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心