基于弥散-黏滞型波动方程的地震波衰减及延迟分析
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摘要
地震波的衰减、储层中的流体预测和4D流体监测技术是目前石油地球物理勘探领域十分有价值的热门研究课题.该文在基于一维弥散-黏滞型波动方程正演的基础上,根据含流体地层的弥散性与黏滞性,研究和模拟含流体地层对地震波的吸收衰减特征、低频伴影现象及其在流体预测中的应用;同时,模拟和分析了地震波在含流体地层中传播而导致的延迟特征.这些特征的检测与解释方法,为基于实际地震资料的储层流体预测及4D油气田开发监测提供技术思路与有效方法.
The attenuation of seismic wave and liquid forecast of the reservoir is a hot research problem in the field of geophysical prospecting of petroleum.Because of the difference of the category and the modality of the liquid in the bed,the character of the seismic wave will vary when propagating in the medium.It is the key of the liquid forecast to research and understand those mechanisms and characters,eventually,to test and display.However,such study is very complex,and it is in the period of groping research.The paper is based on the diffusivity-viscosity wave equation theory,emphasizes the research of seismic attenuation caused by the liquid-filled medium,simulates the alteration of the frequency energy and the time delays when seismic wave propagates in the liquid-filled medium.And eventually,the testing and interpretation method of those characters can provide the technique ideas and effective method for the liquid forecast in the reservoir with actual seismic data.
The attenuation of seismic wave and liquid forecast of the reservoir is a hot research problem in the field of geophysical prospecting of petroleum.Because of the difference of the category and the modality of the liquid in the bed,the character of the seismic wave will vary when propagating in the medium.It is the key of the liquid forecast to research and understand those mechanisms and characters,eventually,to test and display.However,such study is very complex,and it is in the period of groping research.The paper is based on the diffusivity-viscosity wave equation theory,emphasizes the research of seismic attenuation caused by the liquid-filled medium,simulates the alteration of the frequency energy and the time delays when seismic wave propagates in the liquid-filled medium.And eventually,the testing and interpretation method of those characters can provide the technique ideas and effective method for the liquid forecast in the reservoir with actual seismic data.
引文
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[4]John P C,Sun S G,Robert W S.Instantaneous spectral analysis:Detection of low-frequency shadows associated with hydrocarbons.The Leading Edge,2003,22(2):120～127
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[6]Valeri A K,Gennady M G,Thomas M D,et al.Seismic low-frequency effects in monitoring fluid-saturated reservoirs.Geophysics,2004,69(2):522～532
[7]Ali T,Detlef H,Stephen B,et al.Feasibility of monitoring compaction and compart mentalization using4D time shifts and seafloor subsidence.The Leading Edge,2006,25(9):1169～1175
[8]Ali T,Timothy B,Paul C.Monitoring primary depletion reservoirs using amplitudes and time shifts from high-repeat seismic surveys.The Leading Edge,2005,24(12):1214～1221
[9]高静怀,陈文超,李幼铭等.广义S变换与薄互层地震响应分析.地球物理学报,2003,46(4):526～532Gao J H,Chen WC,Li Y M,et al.Generalized Stransform and seismic response analysis of thin interbeds.Chinese J.Geophys.(in Chinese),2003,46(4):526～532
[10]陈文超,高静怀.基于改进的最佳匹配地震子波的地震资料衰减特性分析.地球物理学报,2007,50(3):837～843Chen W C,Gao J H.Characteristic analysis of seismic attenuation using MBMSW wavelets.Chinese J.Geophys.(in Chinese),2007,50(3):837～843
[2]Zhang Z J,Teng J W,He Z H.Azimuthal anisotropy of seismic velocity,attenuation andQvalue in viscous EDA media.Science in China(Series E),2000,43(1):17～22
[3]Zhang Z J,Wang GJ,Harris J M,et al.Multi-component wave-field simulation in viscous extensively dilatancy anisotropic media.Physics of the Earth and Planetary Interiors,1999,114(1-2):25～38
[4]John P C,Sun S G,Robert W S.Instantaneous spectral analysis:Detection of low-frequency shadows associated with hydrocarbons.The Leading Edge,2003,22(2):120～127
[5]Gennady G,Connie V S,Valeri K,et al.Reservoir imaging using low frequencies of seismic reflections.The Leading Edge,2006,25(5):527～531
[6]Valeri A K,Gennady M G,Thomas M D,et al.Seismic low-frequency effects in monitoring fluid-saturated reservoirs.Geophysics,2004,69(2):522～532
[7]Ali T,Detlef H,Stephen B,et al.Feasibility of monitoring compaction and compart mentalization using4D time shifts and seafloor subsidence.The Leading Edge,2006,25(9):1169～1175
[8]Ali T,Timothy B,Paul C.Monitoring primary depletion reservoirs using amplitudes and time shifts from high-repeat seismic surveys.The Leading Edge,2005,24(12):1214～1221
[9]高静怀,陈文超,李幼铭等.广义S变换与薄互层地震响应分析.地球物理学报,2003,46(4):526～532Gao J H,Chen WC,Li Y M,et al.Generalized Stransform and seismic response analysis of thin interbeds.Chinese J.Geophys.(in Chinese),2003,46(4):526～532
[10]陈文超,高静怀.基于改进的最佳匹配地震子波的地震资料衰减特性分析.地球物理学报,2007,50(3):837～843Chen W C,Gao J H.Characteristic analysis of seismic attenuation using MBMSW wavelets.Chinese J.Geophys.(in Chinese),2007,50(3):837～843
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