煤炭地下气化区高密度三维地震勘探技术研究
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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.
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.
引文
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[10]Satinder Chopra,Kurt J.Marfurt Volumetric curvature attributes for fault/fracture characterization[J].First Break,2007(25):35-46.
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[13]Eric Andersen,John Boyd.Seismic Waveform Classification Techniques and Benefits Focus Article Cont'd[J].CSEG RECORDER,2004:26-29.
[14]王德民,王瑞杰,程增庆,等.利用三维地震资料解释煤采空区的方法研究[J].中国煤田地质,2007,19(3):61-62.
[15]杨双安,宁书年.老窑采空区的地震探测与研究[J].中国煤田地质,2004,16(1):44-47.
[2]张兴平,林建东,唐建益.基于三维地震层间属性高精度识别煤矿陷落柱[J].煤炭科学技术,2008,36(7):87-91.
[3]汪洋,张兴平,唐建益.基于三维地震层面属性解释煤矿小断层的研究[J].煤炭工程,2008,(7):90-92.
[4]中国煤炭地质总局地球物理勘探研究院.煤炭资源地震精细高效探测技术研究[R].河北涿州:中国煤炭地质总局地球物理勘探研究院,2007.
[5]王强,张兴平.面块切片解释、相干体解释技术及其应用[J].中国煤炭,2002,(3):35-36.
[6]杨艳珍,张兴平.三维地震资料解释煤层中岩浆侵入体在晓南煤矿西二采区的应用[J].中国煤田地质,2005,17(3):45-46.
[7]Roberts A.Curvature attributes and their application to 3Dinterpreted horizons[J].First Break,2001,19(2):85-99.
[8]Robertson J D,D A Fisher.Complex seismic trace attributes[J].THELEADING EDGE,1988,7(6):22-26.
[9]Zhang R.Spectral decomposition of seismic data with CWPT[J].THELEADING EDGE,2008,27(3):326-329.
[10]Satinder Chopra,Kurt J.Marfurt Volumetric curvature attributes for fault/fracture characterization[J].First Break,2007(25):35-46.
[11]Satinder Chopra and Kurt J Marfurt.Curvature attribute applicationsto 3D surface seismic data Lit flow[J].CSEG RECORDER(Special Edition),2006:44-56.
[12]Andy Roberts.Curvature attributes and their application to 3Dinterpreted horizons[J].first break,2001,19:85-100.
[12]Michael Rybakov,Lorian Fleischer,Uri ten Brinkb.The HulaValley subsurface structure inferred from gravity data[J].Israel Journal Earth Sciences,52(3-4):113-122.
[13]Eric Andersen,John Boyd.Seismic Waveform Classification Techniques and Benefits Focus Article Cont'd[J].CSEG RECORDER,2004:26-29.
[14]王德民,王瑞杰,程增庆,等.利用三维地震资料解释煤采空区的方法研究[J].中国煤田地质,2007,19(3):61-62.
[15]杨双安,宁书年.老窑采空区的地震探测与研究[J].中国煤田地质,2004,16(1):44-47.
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