叠前密度反演方法研究
|
摘要
常规叠前三参数反演存在严重的病态性,直接获取地层密度信息存在难度。通过理论分析阐述了叠前密度反演的难点及可行性,认为大偏移距地震资料是实现密度反演的前提,多波联合反演能够有效提高密度提取的稳定性。同时,根据楔状模型试算结果对比,总结了影响叠前密度反演精度的关键因素。
Conventional prestack three-parameter inversion has serious morbidity,and it is difficult to obtain formation density information directly.The difficulty and feasibility of prestack density inversion were expounded through theoretical analysis.It was considered that large offset seismic data was the premise of density inversion,and multi-wave joint inversion can effectively improve the stability of density extraction.At the same time,the key factors affecting the accuracy of prestack density inversion were summarized according to the comparison of the results of wedge model test calculation.
Conventional prestack three-parameter inversion has serious morbidity,and it is difficult to obtain formation density information directly.The difficulty and feasibility of prestack density inversion were expounded through theoretical analysis.It was considered that large offset seismic data was the premise of density inversion,and multi-wave joint inversion can effectively improve the stability of density extraction.At the same time,the key factors affecting the accuracy of prestack density inversion were summarized according to the comparison of the results of wedge model test calculation.
引文
[1] Li Y.A study on applicability of density inversion in defining reservoirs[J].Seg Technical Program Expanded Abstracts,2005,24(1):1646.
[2] Koughnet R W V,Skidmore C M,Kelly M C,et al.Prospecting with the density cube[J].Leading Edge,2003,22(10):1038-1045.
[3] Behura J,Kabir N,Crider R,et al.Density extraction from P-wave AVO inversion:Tuscaloosa Trend example[J].Leading Edge,2007,26(26):772.
[4] Yang J,Chang X,Cheng D,et al.Prestack density inversion for gas-saturated carbonate prediction in M block[C]// Seg Technical Program Expanded,1949.
[5] Gray F D,Anderson P F,Gunderson J A.Prediction of shale plugs between wells in heavy oil sands using seismic attributes[J].Natural Resources Research,2006,15(2):103-109.
[6] Kinnon E C P,Golding S D,Boreham C J,et al.Stable isotope and water quality analysis of coal bed methane production waters and gases from the Bowen Basin,Australia[J].International Journal of Coal Geology,2010,82(3):219-231.
[7] Kelly M C,Skidmore C.Non-linear AVO equations and their use in 3-parameter inversions[J].Theoretical & Mathematical Physics,2001,160(1):1022-1030.
[8] Kelly M,Skidmore C,Ford D.AVO inversion,part 1:Isolating rock property contrasts[J].Leading Edge,2001,20(3):320-323.
[9] Skidmore C,Kelly M,Cotton R.AVO inversion,part 2:Isolating rock property contrasts[J].Leading Edge,2001,20(4):425.
[10] Tian Z B,Zhang Y B,Wang J Q,et al.Study on the prestack seismic inversion prediction method for rich coal-bed-gas reservoirs:a case in southeastern Shanxi province[J].Chinese Journal of Geophysics,2016,59(12):4494-4504.
[11] Roy B,Anno P,Gurch M.Wide-angle inversion for density:Tests for heavy-oil reservoir characterization[J].Seg Technical Program Expanded Abstracts,2006,25(1):1660.
[12] Riedel M,Theilen F.AVO investigations of shallow marine sediments[J].Geophysical Prospecting,2010,49(2):198-212.
[13] 张春涛,王尚旭.PP波和PS波联合反演研究进展[J].科技导报,2010,28(10):106-110.Zhang Chuntao,Wang Shangxu.Review of joint Inversion of PP and PS waves[J].Science & Technology Review,2010,28(10):106-110.
[14] Jin S,Cambois G,Vuillermoz C.Shear-wave velocity and density estimation from PS-wave AVO analysis:application to an OBS dataset from the North Sea[J].Geophysics,2000,65(5):1446-1454.
[15] Castoro A,White R E,Thomas R D.Thin-bed AVO:compensating for the effects of NMO on reflectivity sequences[J].Geophysics,2001,66(6):1714-1720.
[16] Zhang K,Li W,Hilterman F.Gulf of mexico fizz and gas separation with calibrated AVO Impedance[J].SEG Technical Program Expanded Abstracts,2007,26(1):3124.
[17] Shi Y M,Yao F C,Sun H S,et al.Density Inversion and porosity estimation using seismic data[J].Chinese Journal of Geophysics,2010,53(1):144-153.
[18] Khare V,Rape T.Density Inversion using joint PP/PS data:Sensitivity to the angle range[J].Seg Technical Program Expanded Abstracts,1949,26(1):965.
[19] 黄中玉,赵金州.纵波和转换波AVO联合反演技术[J].石油物探,2004,43(4):319-322.Huang Zhongyu,Zhao Jinzhou.Simultaneous P and S wave AVO inversion[J].Geophysical Prospecting for Petroleum,2004,43(4):319-322.
[20] 陈天胜,刘洋,魏修成.纵波和转换波联合AVO反演方法研究[J].中国石油大学学报(自然科学版),2006,30(1):33-37.Chen Tiansheng,Liu Yang,Wei Xiucheng.Joint amplitude versus offset inversion of P-P and P-SV seismic data[J].Journal of China University of Petroleum(Edition of Natural Science),2006,30(1):33-37.
[21] Anderson P F,Gray F D.Using LMR for dual attribute lithology identification[J].Seg Technical Program Expanded Abstracts,1949,20(1):2135.
[22] 冯晅,舒梦理,王兆国,等.P-P波和P-SV波联合AVO反演研究[J].地球物理学进展,2008,23(5):1556-1559.Feng Xuan,Shu Mengli,Wang Zhaoguo,et al.Joint AVO inversion using P-P and P-SV seismic data[J].Progress in Geophysics,2008,23(5):1556-1559.
[23] 张春涛,王尚旭,李生杰,等.纵横波联合反演方法研究及应用[J].石油地球物理勘探,2010,45(4):520-524.Zhang Chuntao,Wang Shangxu,Li Shengjie,et al.Compressional and shear wave joint inversion technique research and its application[J].Oil Geophysical Prospecting,2010,45(4):520-524.
[24] Gardner G H F,Gardner L W,Gregory A R.Formation velocity and density:the diagnostic basics for stratigraphic traps[J].Geophysics,1974,39(6):770-780.
[25] Wang Zhijing.Fundamentals of seismic rock physics[J].Geophysics,2001,66(2):398.
[26] Greenberg M L,Castagna J P.Shear-wave velocity estimation in porous rocks:theoretical formulation,preliminary verification and applications[J].Geophysical Prospecting,1992,40(2):195-209.
[2] Koughnet R W V,Skidmore C M,Kelly M C,et al.Prospecting with the density cube[J].Leading Edge,2003,22(10):1038-1045.
[3] Behura J,Kabir N,Crider R,et al.Density extraction from P-wave AVO inversion:Tuscaloosa Trend example[J].Leading Edge,2007,26(26):772.
[4] Yang J,Chang X,Cheng D,et al.Prestack density inversion for gas-saturated carbonate prediction in M block[C]// Seg Technical Program Expanded,1949.
[5] Gray F D,Anderson P F,Gunderson J A.Prediction of shale plugs between wells in heavy oil sands using seismic attributes[J].Natural Resources Research,2006,15(2):103-109.
[6] Kinnon E C P,Golding S D,Boreham C J,et al.Stable isotope and water quality analysis of coal bed methane production waters and gases from the Bowen Basin,Australia[J].International Journal of Coal Geology,2010,82(3):219-231.
[7] Kelly M C,Skidmore C.Non-linear AVO equations and their use in 3-parameter inversions[J].Theoretical & Mathematical Physics,2001,160(1):1022-1030.
[8] Kelly M,Skidmore C,Ford D.AVO inversion,part 1:Isolating rock property contrasts[J].Leading Edge,2001,20(3):320-323.
[9] Skidmore C,Kelly M,Cotton R.AVO inversion,part 2:Isolating rock property contrasts[J].Leading Edge,2001,20(4):425.
[10] Tian Z B,Zhang Y B,Wang J Q,et al.Study on the prestack seismic inversion prediction method for rich coal-bed-gas reservoirs:a case in southeastern Shanxi province[J].Chinese Journal of Geophysics,2016,59(12):4494-4504.
[11] Roy B,Anno P,Gurch M.Wide-angle inversion for density:Tests for heavy-oil reservoir characterization[J].Seg Technical Program Expanded Abstracts,2006,25(1):1660.
[12] Riedel M,Theilen F.AVO investigations of shallow marine sediments[J].Geophysical Prospecting,2010,49(2):198-212.
[13] 张春涛,王尚旭.PP波和PS波联合反演研究进展[J].科技导报,2010,28(10):106-110.Zhang Chuntao,Wang Shangxu.Review of joint Inversion of PP and PS waves[J].Science & Technology Review,2010,28(10):106-110.
[14] Jin S,Cambois G,Vuillermoz C.Shear-wave velocity and density estimation from PS-wave AVO analysis:application to an OBS dataset from the North Sea[J].Geophysics,2000,65(5):1446-1454.
[15] Castoro A,White R E,Thomas R D.Thin-bed AVO:compensating for the effects of NMO on reflectivity sequences[J].Geophysics,2001,66(6):1714-1720.
[16] Zhang K,Li W,Hilterman F.Gulf of mexico fizz and gas separation with calibrated AVO Impedance[J].SEG Technical Program Expanded Abstracts,2007,26(1):3124.
[17] Shi Y M,Yao F C,Sun H S,et al.Density Inversion and porosity estimation using seismic data[J].Chinese Journal of Geophysics,2010,53(1):144-153.
[18] Khare V,Rape T.Density Inversion using joint PP/PS data:Sensitivity to the angle range[J].Seg Technical Program Expanded Abstracts,1949,26(1):965.
[19] 黄中玉,赵金州.纵波和转换波AVO联合反演技术[J].石油物探,2004,43(4):319-322.Huang Zhongyu,Zhao Jinzhou.Simultaneous P and S wave AVO inversion[J].Geophysical Prospecting for Petroleum,2004,43(4):319-322.
[20] 陈天胜,刘洋,魏修成.纵波和转换波联合AVO反演方法研究[J].中国石油大学学报(自然科学版),2006,30(1):33-37.Chen Tiansheng,Liu Yang,Wei Xiucheng.Joint amplitude versus offset inversion of P-P and P-SV seismic data[J].Journal of China University of Petroleum(Edition of Natural Science),2006,30(1):33-37.
[21] Anderson P F,Gray F D.Using LMR for dual attribute lithology identification[J].Seg Technical Program Expanded Abstracts,1949,20(1):2135.
[22] 冯晅,舒梦理,王兆国,等.P-P波和P-SV波联合AVO反演研究[J].地球物理学进展,2008,23(5):1556-1559.Feng Xuan,Shu Mengli,Wang Zhaoguo,et al.Joint AVO inversion using P-P and P-SV seismic data[J].Progress in Geophysics,2008,23(5):1556-1559.
[23] 张春涛,王尚旭,李生杰,等.纵横波联合反演方法研究及应用[J].石油地球物理勘探,2010,45(4):520-524.Zhang Chuntao,Wang Shangxu,Li Shengjie,et al.Compressional and shear wave joint inversion technique research and its application[J].Oil Geophysical Prospecting,2010,45(4):520-524.
[24] Gardner G H F,Gardner L W,Gregory A R.Formation velocity and density:the diagnostic basics for stratigraphic traps[J].Geophysics,1974,39(6):770-780.
[25] Wang Zhijing.Fundamentals of seismic rock physics[J].Geophysics,2001,66(2):398.
[26] Greenberg M L,Castagna J P.Shear-wave velocity estimation in porous rocks:theoretical formulation,preliminary verification and applications[J].Geophysical Prospecting,1992,40(2):195-209.