利用地震P波方位属性评价瓦斯富集区
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摘要
以往研究表明煤层具有弱各向异性,为正交各向异性介质,因此利用P波的方位各向异性属性来进行煤层裂隙裂缝检测、预测煤层瓦斯富集带是行之有效的方法.本文对山西阳泉新景佛洼区的三维地震资料进行处理,得到4个方位的偏移数据体,并提取与煤层裂隙裂缝相关的多种地震属性.通过计算得到裂隙裂缝的相对密度,进而对煤层瓦斯的富集带进行预测.
All of research results indicated that coal is orthogonality anisotropic medium.So it is a effective method that detect fractures and forecast the gas enriched area using seismic P-wave azimuth attributes.After 3D seismic P-wave data in Fowa mining area,Xinjing coalmine,Yangquan,are processed,and 4 azimuth migrated data cubes are obtained from which several attributes related with fractures are extracted.Then the relative fracture density is calculated and the gas enriched area is predicted.
All of research results indicated that coal is orthogonality anisotropic medium.So it is a effective method that detect fractures and forecast the gas enriched area using seismic P-wave azimuth attributes.After 3D seismic P-wave data in Fowa mining area,Xinjing coalmine,Yangquan,are processed,and 4 azimuth migrated data cubes are obtained from which several attributes related with fractures are extracted.Then the relative fracture density is calculated and the gas enriched area is predicted.
引文
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[2]曲寿利,季玉新,王鑫.泥岩裂缝油气藏地震检测方法.北京:石油工业出版社,2003:32-40.Qu S L,Ji Y X,Wang X.Seismic Detection of MudstoneFractured(in Chinese).Reservoirs Beijing:Press of PetroleumIndustry,2003:32-40.
[3]周锦明,熊翥.地震数据精细处理.北京:石油工业出版社,2003.Zhou J M,Xiong Z.Seismic Data Exactly Processing(inChinese).Beijing:Press of Petroleum Industry,2003.
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[6]郭智奇,刘财,杨宝俊等.粘弹各向异性介质中地震波场模拟与特征.地球物理学进展,2007,22(3):804-810.Guo Z Q,Liu C,Yang B J,et al.Seismic wave fields modelingand feature in viscoelastic anisotropic media.Progress inGeophysics(in Chinese),2007,22(3):804-810.
[7]黄伟传,杨长春,王彦飞.利用叠前地震数据预测裂缝储层的应用研究.地球物理学进展,2007,22(5):1602-1606.Huang W C,Yang C C.The application of pre-stack seismicdata in predicting the fractured reservoir.Progress inGeophysics(in Chinese),2007,22(5):1602-1606.
[8]杨晓,王真理,喻岳钰.裂缝型储层地震检测方法综述.地球物理学进展,2010,25(5):1785-1794.Yang X,Wang Z L,Yu Y Y.The overview of seismictechniques in prediction of fracture reservoir.Progress inGeophysics(in Chinese),2010,25(5):1785-1794.
[9]Schoenberg M,Sayers C M.Seismic anisotropy of fracturedrock.Geophysics,1995,60(1):204-211.
[10]Mallick S,Craft K L,Meister L J,Chambers R E.Determinationof the principal directions of azimuthal anisotropy from P-wave seismic data.Geophysics,1998,63(2):692-702.
[11]Hudson J A,Liu E.Effective elastic properties of heavilyfaulted structures.Geophysics,1999,64(2):479-485.
[12]Lo T W,Coyner K B,Toksz M N.Experimental determination ofelastic anisotropy of Berea sandstone,Chicopee shale,andChelmsford granite.Geophysics,1986,51(1):164-171.
[13]Li X Y.Fracture detection using azimuthal variation of P-wave moveout from orthogonal seismic survey lines.Geophysics,1999,64(4):1193-1201.
[14]Perez M A,Gibson R L,Toks M N.Detection of fractureorientation using azimuthal variation of P-wave AVOresponses.Geophysics,1999,64(4):1253-1265.
[2]曲寿利,季玉新,王鑫.泥岩裂缝油气藏地震检测方法.北京:石油工业出版社,2003:32-40.Qu S L,Ji Y X,Wang X.Seismic Detection of MudstoneFractured(in Chinese).Reservoirs Beijing:Press of PetroleumIndustry,2003:32-40.
[3]周锦明,熊翥.地震数据精细处理.北京:石油工业出版社,2003.Zhou J M,Xiong Z.Seismic Data Exactly Processing(inChinese).Beijing:Press of Petroleum Industry,2003.
[4]张中杰.地震各向异性研究进展.地球物理学进展,2002,17(2):281-293.Zhang Z J.A review of the seismic anisotropy and itsapplications.Progress in Geophysics(in Chinese),2002,17(2):281-293.
[5]卢明辉,唐建侯,杨慧珠等.正交各向异性介质P波走时分析及Thomsen参数反演.地球物理学报,2005,48(5):1167-1171.Lu M H,Tang J H,Yang H Z,et al.P wave traveltime analysisand Thomsen parameters inversion in orthorhombic media.Chinese J.Geophys.(in Chinese),2005,48(5):1167-1171.
[6]郭智奇,刘财,杨宝俊等.粘弹各向异性介质中地震波场模拟与特征.地球物理学进展,2007,22(3):804-810.Guo Z Q,Liu C,Yang B J,et al.Seismic wave fields modelingand feature in viscoelastic anisotropic media.Progress inGeophysics(in Chinese),2007,22(3):804-810.
[7]黄伟传,杨长春,王彦飞.利用叠前地震数据预测裂缝储层的应用研究.地球物理学进展,2007,22(5):1602-1606.Huang W C,Yang C C.The application of pre-stack seismicdata in predicting the fractured reservoir.Progress inGeophysics(in Chinese),2007,22(5):1602-1606.
[8]杨晓,王真理,喻岳钰.裂缝型储层地震检测方法综述.地球物理学进展,2010,25(5):1785-1794.Yang X,Wang Z L,Yu Y Y.The overview of seismictechniques in prediction of fracture reservoir.Progress inGeophysics(in Chinese),2010,25(5):1785-1794.
[9]Schoenberg M,Sayers C M.Seismic anisotropy of fracturedrock.Geophysics,1995,60(1):204-211.
[10]Mallick S,Craft K L,Meister L J,Chambers R E.Determinationof the principal directions of azimuthal anisotropy from P-wave seismic data.Geophysics,1998,63(2):692-702.
[11]Hudson J A,Liu E.Effective elastic properties of heavilyfaulted structures.Geophysics,1999,64(2):479-485.
[12]Lo T W,Coyner K B,Toksz M N.Experimental determination ofelastic anisotropy of Berea sandstone,Chicopee shale,andChelmsford granite.Geophysics,1986,51(1):164-171.
[13]Li X Y.Fracture detection using azimuthal variation of P-wave moveout from orthogonal seismic survey lines.Geophysics,1999,64(4):1193-1201.
[14]Perez M A,Gibson R L,Toks M N.Detection of fractureorientation using azimuthal variation of P-wave AVOresponses.Geophysics,1999,64(4):1253-1265.
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