基于地震波衰减的特征属性重构方法
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摘要
以储层流体识别为目的,提出了基于地震波衰减的特征属性重构方法。首先从地震波衰减理论出发,通过改变地层品质因子表达式,推导了地震特征属性函数,利用振幅类、频率类及衰减属性重构新的地震属性;然后设计粘弹性介质模型进行试算,结果表明,利用特征属性函数重构的地震属性能较好地突出储层含流体变化特征,从而验证了基于地震波衰减的特征属性重构方法识别储层含油气性的有效性。将该方法应用于老河口油田北部老168井区河道砂岩储层油气识别,基于叠后地震资料精细刻画了储层流体的展布特征,取得了较好的应用效果。
According to apparent absorption and attenuation characteristics of the hydrocarbon-bearing reservoir,a characteristic attribute reconstructing method based on seismic wave attenuation has been developed to identify the reservoir fluids.The seismic absorption and attenuation theory is the foundation of this method.A seismic characteristic attribute function has been deduced by changing the strata quality factor expression.According to this function,we reconstruct new seismic attributes by using the common seismic attributes of amplitude class,frequency class and absorption & attenuation class.Based on the designed viscoelastic medium model,the examine result shows that the new attributes can emphasize the changing characteristics of reservoirs fluid-bearing and verify the new method.Applied the technique to Lao168 well block to identify the reservoir hydrocarbon-bearing of channel sandstone,we achieved a good result that the distribution of the fluid was accurately depicted.
According to apparent absorption and attenuation characteristics of the hydrocarbon-bearing reservoir,a characteristic attribute reconstructing method based on seismic wave attenuation has been developed to identify the reservoir fluids.The seismic absorption and attenuation theory is the foundation of this method.A seismic characteristic attribute function has been deduced by changing the strata quality factor expression.According to this function,we reconstruct new seismic attributes by using the common seismic attributes of amplitude class,frequency class and absorption & attenuation class.Based on the designed viscoelastic medium model,the examine result shows that the new attributes can emphasize the changing characteristics of reservoirs fluid-bearing and verify the new method.Applied the technique to Lao168 well block to identify the reservoir hydrocarbon-bearing of channel sandstone,we achieved a good result that the distribution of the fluid was accurately depicted.
引文
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[17]谭茂金,杨邦伟,贾黎,等.胜利老河口油田桩106井区馆陶组成藏规律研究[J].石油与天然气地质,2006,27(1):44-47Tan M J,Yang B W,Jia L,et al.A study of reser-voiring pattern of Guantao Fm in Zhuang 106 wellblock in Laohekou oilfield[J].Oil&Gas Geology,2006,27(1):44-47
[2]丁峰,年永吉,王治国,等.地震多属性RGBA颜色融合技术的应用研究[J].石油物探,2010,49(3):248-252Ding F,Nian Y J,Wang Z G,et al.Application ofseismic multi-attributes RGBA color blending[J].Geophysical Prospecting for Petroleum,2010,49(3):248-252
[3]谢东,王永刚,乐友喜,等.地震属性分析技术在子寅油田开发中的应用[J].石油物探,2003,42(1):72-76Xie D,Wang Y G,Yue Y X,et al.Application ofseismic attribute analysis technology in the produc-tion of Ziyin Oilfield[J].Geophysical Prospectingfor Petroleum,2003,42(1):72-76
[4]王玉梅,季玉新,李东波,等.应用地震属性技术预测A地区储层[J].石油物探,2001,40(4):69-76Wang Y M,Ji Y X,Li D B,et al.Prediction of res-ervoirs in A region with seismic attribute technique[J].Geophysical Prospecting for Petroleum,2001,40(4):69-76
[5]高静怀,陈凤,陈树民.利用地震瞬时谱属性进行薄互层分析[J].煤田地质与勘探,2005,33(3):67-70Gao J H,Chen F,Chen S M.Using seismic instan-taneous attributes to analyze thin interbeds[J].2005,33(3):67-70
[6]高静怀,汪文秉,朱光明.小波变换与信号瞬时特征分析[J].地球物理学报,1997,40(6):821-832Gao J H,Wang W B,Zhu G M.Wavelet transformand instantaneous attributes analysis[J].ChineseJournal Geophysics,1997,40(6):821-832
[7]凌云.大地吸收衰减分析[J].石油地球物理勘探,2001,36(1):1-8Ling Y.Analysis of attenuation by earth absorption[J].Oil Geophysical Prospecting,2001,36(1):1-8
[8]马昭军,刘洋.地震波衰减反演研究综述[J].地球物理学进展,2005,20(4):1074-1082Ma Z J,Liu Y.A summary of research on seismicattenuation[J].Progress in Geophysics,2005,20(4):1074-1082
[9]辛可锋,李振春,王永刚,等.地层等效吸收系数反演[J].石油物探,2001,40(4):14-20Xin K F,Li Z C,Wang Y G,et al.Formation equiv-alent absorption coefficient inversion[J].Geophysi-cal Prospecting for Petroleum,2001,40(4):14-20
[10]苑书金,董宁,于常青.地震波衰减技术在鄂尔多斯盆地储层预测中的应用[J].石油物探,2006,45(2):182-185Yuan S J,Dong N,Yu C Q.The application of seis-mic attenuation technology for reservoir prediction inErdos basin[J].Geophysical Prospecting for Petro-leum,2006,45(2):182-185
[11]裴正林.三维各向异性介质中弹性波动方程交错网格高阶有限差分法数值模拟[J].石油大学学报,2004,28(5):23-29Pei Z L.Three-dimensional numerical simulation ofelastic wave propagation in 3-D anisotropic mediawith staggered-grid high-order difference method[J].Journal of the University of Petroleum,2004,28(5):23-29
[12]陈可洋.标量声波波动方程高阶交错网格有限差分法[J].中国海上油气,2009,21(4):232-236Chen K Y.High-order staggered-grid finite differ-ence scheme for scalar acoustic wave equation[J].China Offshore Oil and Gas,2009,21(4):232-236
[13]李振春,张华,刘庆敏,等.弹性波交错网格高阶有限差分法波场分离数值模拟[J].石油地球物理勘探,2007,42(5):510-515Li Z C,Zhang H,Liu Q M,et al.Numeric simula-tion of elastic wavefield separation by staggeringgrid high-order finite-difference algorithm[J].OilGeophysical Prospecting,2007,42(5):510-515
[14]王秀明,张海澜,王东.利用高阶交错网格有限差分法模拟地震波在非均匀孔隙介质中的传播[J].地球物理学报,2003,46(6):842-849Wang X M,Zhang H L,Wang D.Modelling of seis-mic wave propagation in heterogeneous poroelastic-media using a high-order staggered finite-differencemethod[J].Chinese Journal of Geophysics,2003,46(6):842-849
[15]魏红梅,董臣强,张明振.斜坡带曲流河道砂体成藏模式及描述方法——以老河口油田为例[J].石油地球物理勘探,2003,38(2):173-177Wei H M,Dong C Q,Zhang M Z.Meander channelsandstone reservoir pattern on slope belt and its de-scription method:taking Laohekou oilfield for exam-ple[J].Oil Geophysical Prospecting,2003,38(2):173-177
[16]庄丽.老河口油田油藏特征及适用的勘探技术[J].海洋石油,2005,25(3):14-17Zhuang L.Oil-reservoir forming features and explo-ration technology in Laohekou oil field[J].OffshoreOil,2005,25(3):14-17
[17]谭茂金,杨邦伟,贾黎,等.胜利老河口油田桩106井区馆陶组成藏规律研究[J].石油与天然气地质,2006,27(1):44-47Tan M J,Yang B W,Jia L,et al.A study of reser-voiring pattern of Guantao Fm in Zhuang 106 wellblock in Laohekou oilfield[J].Oil&Gas Geology,2006,27(1):44-47
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