AVO技术在铁匠炉地区油气检测中的应用
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摘要
勘探开发实践证实,铁匠炉斜坡带沙河街组岩性-地层油气藏油水关系复杂。由于叠前相对振幅保持处理的地震资料比叠后地震资料包含更丰富的岩性和流体信息,因此利用叠前地震资料进行油气检测的敏感性更强。该文主要基于Zoeppritz方程的Aki&Richards和Shuey近似公式,利用叠前地震资料开展了油气检测方面的研究,即在进行AVO正演模拟确定流体响应的AVO异常类型基础上,提取过井点的角道集并识别AVO异常,最后对AVO反演的属性体进行解释,识别油气异常分布区域。该方法很好地指导了铁匠炉地区的勘探部署工作。
The lithologic-stratigraphic reservoirs of Shahejia Formation in Tiejianglu slope belt have complex oil/water relationship.The prestack seismic data with relative amplitude preservation contain more information about lithology and fluid than the poststack seismic data.Therefore,the prestack seismic data can be used for hydrocarbon detection.The primary application of prestack seismic data of Aki & Richards and Shuey approximate expressions based on Zoeppritz equation in hydrocarbon detection is introduced.AVO forward modeling is conducted to define fluid-corresponding AVO abnormity,then to identify AVO abnormity across well point trace gather,and finally to interpret AVO multi-attribute body,thus to find abnormal hydrocarbon distribution zones and guide the exploration deployment in the study area.
The lithologic-stratigraphic reservoirs of Shahejia Formation in Tiejianglu slope belt have complex oil/water relationship.The prestack seismic data with relative amplitude preservation contain more information about lithology and fluid than the poststack seismic data.Therefore,the prestack seismic data can be used for hydrocarbon detection.The primary application of prestack seismic data of Aki & Richards and Shuey approximate expressions based on Zoeppritz equation in hydrocarbon detection is introduced.AVO forward modeling is conducted to define fluid-corresponding AVO abnormity,then to identify AVO abnormity across well point trace gather,and finally to interpret AVO multi-attribute body,thus to find abnormal hydrocarbon distribution zones and guide the exploration deployment in the study area.
引文
[1]李庆忠.岩性油气藏地震勘探若干问题讨论(Ⅰ)[J].岩性油气藏,2008,20(2):1-5.
[2]胡晓丽,谭大龙.孔隙形状对AVO响应影响的研究[J].岩性油气藏,2010,22(3):114-117.
[3]王大兴,于波,张盟勃,等.地震叠前分析技术在子洲气田的研究与应用[J].岩性油气藏,2008,20(1):95-100.
[4]张盟勃,史松群,潘玉.叠前反演技术在苏里格地区的应用[J].岩性油气藏,2007,19(4):91-94.
[5]赵万金,张巧凤,苏勤.莫里青断陷地震储层特征及预测技术研究[J].岩性油气藏,2010,22(4):100-103.
[6]郑晓东.Zoeppritz方程的近似及其应用[J].石油地球物理勘探,1991,26(2):129-144.
[7]杨绍国,周熙襄.AVO属性叠加剖面的正演模型及其应用[J].石油地球物理勘探,1995,30(6):772-774.
[8]王保丽,印兴耀,张繁昌.弹性阻抗反演及应用研究[J].地球物理学进展,2005,20(1):89-92.
[9]Goodway W,Chen T,Downton J.Improved AVO fluid detection and lithology discrimination using Lame’s petrophysical parameter[J].CSEG Recorder,1997,22(7):3-5.
[10]何诚,蔡友红,李邗.AVO属性交会图解释技术在碳酸盐岩储层预测中的应用[J].石油地球物理勘探,2005,40(6):711-715.
[11]Smith G C,Gidlow P M.Weighted stacking for rock property estimation and detection of gas[J].Geophysical Prospecting,1987,35:993-1014.
[12]Gray D.Elastic inversion for Lamparameters[C].The Expended Abstracts of SEG72nd Annual Meeting,2002:213-216.
[13]Castagna J P,Swan H W.Principles of AVO cross plotting[J].The Leading Edge,1997,17(4):337-342.
[14]Wang Zhijing,Nur A M,Batzle M.Effect of different pore fluids on seismic velocities in rocks[J].Canadian Journal of Exploration Geophysicists,1990,26(2):104-112.
[15]黄绪德.油气预测与油气藏描述-地震勘探直接找油气[M].南京:江苏科学技术出版社,2003.
[2]胡晓丽,谭大龙.孔隙形状对AVO响应影响的研究[J].岩性油气藏,2010,22(3):114-117.
[3]王大兴,于波,张盟勃,等.地震叠前分析技术在子洲气田的研究与应用[J].岩性油气藏,2008,20(1):95-100.
[4]张盟勃,史松群,潘玉.叠前反演技术在苏里格地区的应用[J].岩性油气藏,2007,19(4):91-94.
[5]赵万金,张巧凤,苏勤.莫里青断陷地震储层特征及预测技术研究[J].岩性油气藏,2010,22(4):100-103.
[6]郑晓东.Zoeppritz方程的近似及其应用[J].石油地球物理勘探,1991,26(2):129-144.
[7]杨绍国,周熙襄.AVO属性叠加剖面的正演模型及其应用[J].石油地球物理勘探,1995,30(6):772-774.
[8]王保丽,印兴耀,张繁昌.弹性阻抗反演及应用研究[J].地球物理学进展,2005,20(1):89-92.
[9]Goodway W,Chen T,Downton J.Improved AVO fluid detection and lithology discrimination using Lame’s petrophysical parameter[J].CSEG Recorder,1997,22(7):3-5.
[10]何诚,蔡友红,李邗.AVO属性交会图解释技术在碳酸盐岩储层预测中的应用[J].石油地球物理勘探,2005,40(6):711-715.
[11]Smith G C,Gidlow P M.Weighted stacking for rock property estimation and detection of gas[J].Geophysical Prospecting,1987,35:993-1014.
[12]Gray D.Elastic inversion for Lamparameters[C].The Expended Abstracts of SEG72nd Annual Meeting,2002:213-216.
[13]Castagna J P,Swan H W.Principles of AVO cross plotting[J].The Leading Edge,1997,17(4):337-342.
[14]Wang Zhijing,Nur A M,Batzle M.Effect of different pore fluids on seismic velocities in rocks[J].Canadian Journal of Exploration Geophysicists,1990,26(2):104-112.
[15]黄绪德.油气预测与油气藏描述-地震勘探直接找油气[M].南京:江苏科学技术出版社,2003.
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