双相各向异性随机介质伪谱法地震波场特征分析
|
摘要
各向异性、双相孔隙以及非均匀性是描述油气储层时应综合考虑的.结合随机介质理论和双相介质模型建立了双相各向异性随机介质模型,采用伪谱法模拟了双相各向异性随机介质地震波场,结果表明:双相各向异性随机介质地震波场存在散射波、旅行时扰动等复杂的波场特征,这些特征强烈依赖于随机介质模型参数.在大非均匀空间尺度下,非均匀幅度主要影响波的旅行时扰动;在小非均匀空间尺度下,非均匀幅度主要影响波的散射.该研究使人们有可能在统计意义下反演油气储层的非均匀特征,有益于加深对地震波在油气储层中传播规律的认识.
The anisotropy,two-phase pore and nonuniformity must be considered comprehensively in order to describe the oil and gas reservoirs accurately.Consequently a two-phase anisotropic random medium model based on the two-phase model and random medium theory is presented in this paper.The seismic wavefield numerical modeling was simulated by using the pseudo-spectral method.The results show that there exist complex wave field features such as wave scattering and traveling time disturbance and these features strongly depend on parameters of the random medium model,the nonuniformity rate mainly impacts the wave traveling time disturbance when spatial scale of nonuniformity is large and mainly impacts wave scattering when spatial scale of nonuniformity is small.The studies make it possible to retrieve the nonuniformity on statistical basis and are useful to understanding more deeply the seismic wave propagation in oil and gas reservoirs.
The anisotropy,two-phase pore and nonuniformity must be considered comprehensively in order to describe the oil and gas reservoirs accurately.Consequently a two-phase anisotropic random medium model based on the two-phase model and random medium theory is presented in this paper.The seismic wavefield numerical modeling was simulated by using the pseudo-spectral method.The results show that there exist complex wave field features such as wave scattering and traveling time disturbance and these features strongly depend on parameters of the random medium model,the nonuniformity rate mainly impacts the wave traveling time disturbance when spatial scale of nonuniformity is large and mainly impacts wave scattering when spatial scale of nonuniformity is small.The studies make it possible to retrieve the nonuniformity on statistical basis and are useful to understanding more deeply the seismic wave propagation in oil and gas reservoirs.
引文
[1]Biot MA1941J.Appl.Phys.12155
[2]Biot MA1956J.Acoust.Soc.Am.28168
[3]Biot MA1956J.Acoust.Soc.Am.28179
[4]Biot MA1962J.Acoust.Soc.Am.341254
[5]Biot MA1962J.Acoust.Soc.Am.421616
[6]Dvorkin J,Nur A1993Geophysics58524
[7]Parra J O1997Geophysics62309
[8]Parra J O2000Geophysics65201
[9]Yang D H,Zhang ZJ2002Wave Motion35223
[10]Yang D H1998Postdoctoral Dissertation(Beijing:University of Petroleum)p7(in Chinese)[杨顶辉1998博士后出站报告(北京:石油大学)第7页]
[11]Crampin S1978Geophys.J.R.Astr.Soc.53467
[12]Crampin S1981Wave Motion3343
[13]Crampin S1984Geophys.J.R.Astr.Soc.76135
[14]Byun B S1984Geophysics491908
[15]Carcione J M,Kosloff D A1992Geophysics571593
[16]Igel H,Mora P,Riollet B1995Geophysics601203
[17]Dai V,Vaficlis A1995Geophysics60327
[18]Li HX,Liu C,Tao C H2007Oil Geophys.Prospc.42686(in Chinese)[李红星、刘财、陶春辉2007石油地球物理勘探42686]
[19]Zhang ZJ,He J D1989Oil Geophys.Prospc.24290(in Chinese)[张中杰、何樵登1989石油地球物理勘探24290]
[20]Zhang Z J,Teng J W,He Z H2000Sci ChinaE29569(in Chinese)[张中杰、滕吉文、贺振华1999中国科学E29569]
[21]Zhang ZJ,Wang GJ,Harris J M1999Phys.Earth Planet.Int.11425
[22]Du QZ,Yang HZ2002Acta Phys.Sin.512101(in Chinese)[杜启振、杨慧珠2002物理学报512101]
[23]Du QZ,Yang HZ2004Acta Phys.Sin.532801(in Chinese)[杜启振、杨慧珠2004物理学报532801]
[24]Du QZ,Yang HZ2003Acta Phys.Sin.522010(in Chinese)[杜启振、杨慧珠2003物理学报522010]
[25]Du QZ2004Acta Phys.Sin.534428(in Chinese)[杜启振2004物理学报534428]
[26]Du Q Z,Liu L L,Sun J B2007Acta Phys.Sin.566143(in Chinese)[杜启振、刘莲莲、孙晶波2007物理学报566143]
[27]Korn M1993J.Appl.Phys.29247
[28]Ikelle L,Yung S,Daube F1993Geophysics581359
[29]Xi X,Yao Y2001OGP36546(in Chinese)[奚先、姚姚2001石油地球物理勘探36546]
[30]Xi X,Yao Y2002Earth Sci.——J.China Univ.Geosci.2767(in Chinese)[奚先、姚姚2002地球科学——中国地质大学学报2767]
[31]Xi X,Yao Y2004OGP39381(in Chinese)[奚先、姚姚2004石油地球物理勘探39381]
[2]Biot MA1956J.Acoust.Soc.Am.28168
[3]Biot MA1956J.Acoust.Soc.Am.28179
[4]Biot MA1962J.Acoust.Soc.Am.341254
[5]Biot MA1962J.Acoust.Soc.Am.421616
[6]Dvorkin J,Nur A1993Geophysics58524
[7]Parra J O1997Geophysics62309
[8]Parra J O2000Geophysics65201
[9]Yang D H,Zhang ZJ2002Wave Motion35223
[10]Yang D H1998Postdoctoral Dissertation(Beijing:University of Petroleum)p7(in Chinese)[杨顶辉1998博士后出站报告(北京:石油大学)第7页]
[11]Crampin S1978Geophys.J.R.Astr.Soc.53467
[12]Crampin S1981Wave Motion3343
[13]Crampin S1984Geophys.J.R.Astr.Soc.76135
[14]Byun B S1984Geophysics491908
[15]Carcione J M,Kosloff D A1992Geophysics571593
[16]Igel H,Mora P,Riollet B1995Geophysics601203
[17]Dai V,Vaficlis A1995Geophysics60327
[18]Li HX,Liu C,Tao C H2007Oil Geophys.Prospc.42686(in Chinese)[李红星、刘财、陶春辉2007石油地球物理勘探42686]
[19]Zhang ZJ,He J D1989Oil Geophys.Prospc.24290(in Chinese)[张中杰、何樵登1989石油地球物理勘探24290]
[20]Zhang Z J,Teng J W,He Z H2000Sci ChinaE29569(in Chinese)[张中杰、滕吉文、贺振华1999中国科学E29569]
[21]Zhang ZJ,Wang GJ,Harris J M1999Phys.Earth Planet.Int.11425
[22]Du QZ,Yang HZ2002Acta Phys.Sin.512101(in Chinese)[杜启振、杨慧珠2002物理学报512101]
[23]Du QZ,Yang HZ2004Acta Phys.Sin.532801(in Chinese)[杜启振、杨慧珠2004物理学报532801]
[24]Du QZ,Yang HZ2003Acta Phys.Sin.522010(in Chinese)[杜启振、杨慧珠2003物理学报522010]
[25]Du QZ2004Acta Phys.Sin.534428(in Chinese)[杜启振2004物理学报534428]
[26]Du Q Z,Liu L L,Sun J B2007Acta Phys.Sin.566143(in Chinese)[杜启振、刘莲莲、孙晶波2007物理学报566143]
[27]Korn M1993J.Appl.Phys.29247
[28]Ikelle L,Yung S,Daube F1993Geophysics581359
[29]Xi X,Yao Y2001OGP36546(in Chinese)[奚先、姚姚2001石油地球物理勘探36546]
[30]Xi X,Yao Y2002Earth Sci.——J.China Univ.Geosci.2767(in Chinese)[奚先、姚姚2002地球科学——中国地质大学学报2767]
[31]Xi X,Yao Y2004OGP39381(in Chinese)[奚先、姚姚2004石油地球物理勘探39381]
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