裂缝性孔隙介质频变AVAZ反演方法研究进展
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摘要
由于尺度的限制,利用地震方法进行裂缝参数定量表征一直是地球科学的难题。基于裂缝性孔隙介质动态等效理论的频变AVAZ反演方法给出了研究思路。首先介绍了裂缝性孔隙介质的等效介质理论研究进展,分析比较了各种裂缝性储层岩石静态等效介质模型和动态等效介质模型;然后给出了基于Chapman模型的裂缝参数和渗透率定量表征的正问题数学模型以及反演问题求解的方法和策略,以及基于模型数据的数值计算结果;最后讨论了频变AVAZ反演方法目前存在的问题和进一步研究方向。
It is still a challenge to use seismic method to characterize fractures quantitatively due to seismic data resolution scale.Based on dynamic effective medium modeling theory,Frequency-dependent amplitude versus angle and azimuth(FAVAZ)inversion might give a prospective solution according to recent research progress.In this paper,a survey on F-AVAZ inversion method and its application for fracture parameters characterization is displayed.Firstly,the progress on the equivalent medium theory of fractured porous medium is introduced,and the static equivalent medium model and dynamic equivalent medium model of different fractured reservoirs are compared.On the basis of Chapman effective medium modeling theory,a forward model for quantitatively predicting fracture parameters and effective permeability tensors is investigated.Then a discussion on inversion methods and strategies are given with some numerical results.Finally,some challenges for application to real seismic data are presented and some possible research clues are given for further study.
It is still a challenge to use seismic method to characterize fractures quantitatively due to seismic data resolution scale.Based on dynamic effective medium modeling theory,Frequency-dependent amplitude versus angle and azimuth(FAVAZ)inversion might give a prospective solution according to recent research progress.In this paper,a survey on F-AVAZ inversion method and its application for fracture parameters characterization is displayed.Firstly,the progress on the equivalent medium theory of fractured porous medium is introduced,and the static equivalent medium model and dynamic equivalent medium model of different fractured reservoirs are compared.On the basis of Chapman effective medium modeling theory,a forward model for quantitatively predicting fracture parameters and effective permeability tensors is investigated.Then a discussion on inversion methods and strategies are given with some numerical results.Finally,some challenges for application to real seismic data are presented and some possible research clues are given for further study.
引文
[1]曾联波,柯式镇,刘洋.低渗透油气储层裂缝预测研究方法[M].北京:石油工业出版社,2010:1-187Zeng L B,Ke S Z,Liu Y.Fracture prediction methods for reservoirs with low porosity and permeability[M].Beijing:Oil Industry Press,2010:1-187
[2]Liu E,Martinez A.Seismic fracture characterization:concepts and practical applications[M].The Netherlands:EAGE,2012:1-280
[3]Chorpra S,Marfurt K J.Seismic attributes for prospect identification and reservoir characterization[M].Tulsa:Society of Exploration Geophysicists,2007:1-480
[4]Zhang J F,Zhang J J.Diffraction imaging using shot and opening-angle gathers:aprestack time migration approach[J].Geophysics,2014,79(2):S23-S33
[5]Ali A,Jakobsen M.Anisotropic permeability in fractured reservoirs from frequency-dependent seismic amplitude versus angle and azimuth data[J].Geophysical Prospecting,62(2):2014,293-314
[6]Hudson J A.Wave speeds and attenuation of elastic waves in material containing cracks[J].Geophysical Journal of Royal Astronomical Society,1981,64(1):133-150
[7]Schoenberg M,Sayers C.Seismic anisotropy of fractured rock[J].Geophysics 1995,60(1):204-211
[8]Thomsen L.Elastic anisotropy due to aligned cracks in porous rock[J].Geophysical Prospecting,1995,43(6):805-829
[9]Brown R,Korringa J.On the dependence of the elastic properties of a porous rock on the compressibility of the pore fluid[J].Geophysics,1975,40(4):608-616
[10]Gurevich B.Elastic properties of saturated porous rocks with aligned fractures[J].Journal of Applied Geophysics,2003,54(3-4):203-218
[11]Jakobsen M,Hudson J A,Johansen T A.T-matrix approach to shale acoustics[J].Geophysical Journal International,2003,154(2):533-558
[12]Jakobsen M,Liu E,Chapman M.Estimation of anisotropic permeability in fractured reservoirs[J].Expanded Abstracts of 77th Annual Internat SEG Mtg,2007,99-103
[13]Hudson J A,Liu E,Crampin S.The mechanical properties of materials with interconnected cracks and pores[J].Geophysical Journal International,1996,124(1):105-112
[14]Parra J O.Poroelastic model to relate seismic wave attenuation and dispersion to permeability anisotropy[J].Geophysics,2000,65(1):202-210
[15]Chapman M.Frequency dependent anisotropy due to meso-scale fractures in the presence of equantporosity[J].Geophysical Prospecting,2003,51(5):369-379
[16]Maultzsch S,Chapman M,Liu E,et al.Modelling frequency-dependent seismic anisotropy in fluid-saturated rock with aligned fractures,implication of fracture size estimation from anisotropic measurements[J].Geophysical Prospecting,2003,51(5):381-392
[17]Jakobsen M,Chapman M.Unified theory of global flow and squirt flow in cracked porous media[J].Geophysics,2009,74(2):WA65-WA76
[18]Chapman M.Modelling the effect of multiple sets of mesoscale fractures in porous rock on frequency-dependent anisotropy[J].Geophysics,2009,74(6):D97-D103
[19]Rüger A.Variation of P-wave reflectivity with offset and azimuth in anisotropic media[J].Geophysics,1998,63(3):935-947
[20]Tsvankin I.Reflection moveout and parameter estimation for horizontal transverse isotropy[J].Geophysics,1997,62(2):614-629
[21]兰慧田.裂缝性孔隙介质波场模拟与频变AVO储层参数反演[D].吉林长春:吉林大学,2014Lan H T.Seismic wave field modeling and frequency dependent AVO inversion of reservoir properties for fractured porous media[D].Jilin:Jilin University,2014
[2]Liu E,Martinez A.Seismic fracture characterization:concepts and practical applications[M].The Netherlands:EAGE,2012:1-280
[3]Chorpra S,Marfurt K J.Seismic attributes for prospect identification and reservoir characterization[M].Tulsa:Society of Exploration Geophysicists,2007:1-480
[4]Zhang J F,Zhang J J.Diffraction imaging using shot and opening-angle gathers:aprestack time migration approach[J].Geophysics,2014,79(2):S23-S33
[5]Ali A,Jakobsen M.Anisotropic permeability in fractured reservoirs from frequency-dependent seismic amplitude versus angle and azimuth data[J].Geophysical Prospecting,62(2):2014,293-314
[6]Hudson J A.Wave speeds and attenuation of elastic waves in material containing cracks[J].Geophysical Journal of Royal Astronomical Society,1981,64(1):133-150
[7]Schoenberg M,Sayers C.Seismic anisotropy of fractured rock[J].Geophysics 1995,60(1):204-211
[8]Thomsen L.Elastic anisotropy due to aligned cracks in porous rock[J].Geophysical Prospecting,1995,43(6):805-829
[9]Brown R,Korringa J.On the dependence of the elastic properties of a porous rock on the compressibility of the pore fluid[J].Geophysics,1975,40(4):608-616
[10]Gurevich B.Elastic properties of saturated porous rocks with aligned fractures[J].Journal of Applied Geophysics,2003,54(3-4):203-218
[11]Jakobsen M,Hudson J A,Johansen T A.T-matrix approach to shale acoustics[J].Geophysical Journal International,2003,154(2):533-558
[12]Jakobsen M,Liu E,Chapman M.Estimation of anisotropic permeability in fractured reservoirs[J].Expanded Abstracts of 77th Annual Internat SEG Mtg,2007,99-103
[13]Hudson J A,Liu E,Crampin S.The mechanical properties of materials with interconnected cracks and pores[J].Geophysical Journal International,1996,124(1):105-112
[14]Parra J O.Poroelastic model to relate seismic wave attenuation and dispersion to permeability anisotropy[J].Geophysics,2000,65(1):202-210
[15]Chapman M.Frequency dependent anisotropy due to meso-scale fractures in the presence of equantporosity[J].Geophysical Prospecting,2003,51(5):369-379
[16]Maultzsch S,Chapman M,Liu E,et al.Modelling frequency-dependent seismic anisotropy in fluid-saturated rock with aligned fractures,implication of fracture size estimation from anisotropic measurements[J].Geophysical Prospecting,2003,51(5):381-392
[17]Jakobsen M,Chapman M.Unified theory of global flow and squirt flow in cracked porous media[J].Geophysics,2009,74(2):WA65-WA76
[18]Chapman M.Modelling the effect of multiple sets of mesoscale fractures in porous rock on frequency-dependent anisotropy[J].Geophysics,2009,74(6):D97-D103
[19]Rüger A.Variation of P-wave reflectivity with offset and azimuth in anisotropic media[J].Geophysics,1998,63(3):935-947
[20]Tsvankin I.Reflection moveout and parameter estimation for horizontal transverse isotropy[J].Geophysics,1997,62(2):614-629
[21]兰慧田.裂缝性孔隙介质波场模拟与频变AVO储层参数反演[D].吉林长春:吉林大学,2014Lan H T.Seismic wave field modeling and frequency dependent AVO inversion of reservoir properties for fractured porous media[D].Jilin:Jilin University,2014
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