OALib Journal期刊
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各向异性介质三维纵横波联合叠前反演方法及应用
Keywords: 叠前参数反各向异性介质,储层预测,岩性参数,三维三分量地震数据,弹性阻抗梯度
Abstract:
?为了提高储层预测精度,本文利用三维三分量资料及前期处理结果,以各向异性(ti)介质弹性波传播理论为基础,研究了多波精确振幅特征方程,进而推出三维各向异性介质纵横波联合叠前岩性参数反演方法。该方法利用叠前nmo道集,将5个岩性参数在同一方程联合求解,可同时获得5个反演参数。为保持反演参数的独立性,可直接反演地层纵波速度、横波速度、密度及另两个各向异性系数,进而计算出地层的弹性参数、弹性阻抗(ei)及弹性阻抗梯度(eig)等共13个岩性、弹性参数,用于对岩性及流体的识别和描述。文中采用的纵横波联合叠前反演方法可提高反演的可靠性和精度,经实际三维多波地震数据处理证明了方法的适用性。
References
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[2] | mullerg.thereflectivitymethod:atutorial.journalofgeophysics,1985,58:153-174
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[3] | 李生杰,施行觉,王宝善等.地层衰减在地震记录上的特征分析.石油地球物理勘探,2002,37(3);248-253
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[4] | klimentost.attenuationofp-ands-wavesasamethodofdistinguishinggasandcondensatefromoilandwater[j].geophysics.1995,60(2):447-458
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[5] | castagnajp,sunssicgfrcidrw,instantaneousspectralanalysis;detectionoflow-frequencyshadowsassociatedwithhydrocarbons.[j].theleadingedge.2003,22:120-
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[6] | chapmanm,liuenru,lixiangyang.theinfluenceofabnormallyhighreservoirattenuationontheavosignature[j].theleadimgedge.2005,24(11):1120-1125
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[7] | odcbcatue,zhangjinghua,chapmanmctal.ap-plicationofspectraldecompositiontodetectionofdis-persionanomaliesassociatedwithgassaturation[j].theleadingedge.2006,25(2):206-210
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[8] | liuenru,chapmanm,loizounickctal.applica-donsofspectraldecompositionforavoanalysesinthewestofshetland.segtechnicalprogramex-paradedalstracts,2006,15;279-283
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[9] | 黄中玉,王于静,孙显义等.分频技术在气层识别中的应用.勘探地球物理进展,2008,31(1);73-79
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[10] | 邓继新,handchua,王尚旭.基于正演模型的储层谱分解响应特征分析.石油学报,2008,29(4);539-543
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[11] | pinncgarcr,mansinhal.thes-transformwithwindowsofarbitraryandvaryingshape[j].geophysics.2003,68(1):381-385
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[12] | akik,riehardspg.quantitativeseismology,theoryandmethods:volume1.whfrccmanandcompany,1980
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[13] | kennettb.reflections,raysandreverberations.pulletinoftheseismologicalsocietyofamerica,1974,64(6):1685-1696
|
[14] | kennettb.theoreticalreflectionseismogramsforelasticmedia[j].geophysicalprospecting.1979,27:301-321
|
[15] | dvorkinj,mavkou.modelingattenuationinrescrvoirandnon-reservoirrock.theleadingedge,2006,194-197
|
[16] | 席道瑛,邱文亮,程经毅等.饱和多孔岩石的衰减与孔隙率和饱和度的关系[j].石油地球物理勘探.1997,32(2):196-201??浏览
|
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