碳酸盐岩储层不同尺度溶洞地震属性分析
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摘要
溶洞是碳酸盐岩储层油气藏的重要载体之一,对溶洞的研究可以更加深入的了解碳酸盐岩油气藏的形成与聚集机理。而目前大多数研究工作都是局限于剖面特征的研究,并没有考虑不同溶洞组合情况下各种地震属性特征。针对这一问题,设计横向上溶洞尺度变化和纵向上溶洞间隔距变化的2个溶洞模型,并利用波动方程正演和叠前深度偏移方法获取偏移剖面,提取不同类型的地震属性,研究不同尺度和间距变化的溶洞对地震属性的影响。
The karst cave is one of the important carriers of carbonate reservoirs of oil and gas reservoirs.The research in karst cave can get more in-depth understanding of the formation and accumulation mechanism of carbonate reservoirs.At present,most of the research work is limited to the study of the profile characteristics,and no seismic attribute characteristics to be considered in the different cave combination case.This paper,to solve this problem,designs two cave models,which are cave scale changes in lateral and cave interval distance changes in vertical.And it takes advantage of the wave equation forward and the prestack depth migration method for migration profile.At the same time,it extacts different seismic attributes,respectively studies the influence of different scales and interval changes in the caves to seismic attributes.
The karst cave is one of the important carriers of carbonate reservoirs of oil and gas reservoirs.The research in karst cave can get more in-depth understanding of the formation and accumulation mechanism of carbonate reservoirs.At present,most of the research work is limited to the study of the profile characteristics,and no seismic attribute characteristics to be considered in the different cave combination case.This paper,to solve this problem,designs two cave models,which are cave scale changes in lateral and cave interval distance changes in vertical.And it takes advantage of the wave equation forward and the prestack depth migration method for migration profile.At the same time,it extacts different seismic attributes,respectively studies the influence of different scales and interval changes in the caves to seismic attributes.
引文
[1]孙东,王宏斌,雍学善,等.直径40m溶洞距灰岩顶界面不同距离时的地震响应[J].岩性油气藏,2011,23(1):94-106.
[2]李凡异,狄帮让,魏建新,等.碳酸盐岩溶洞成像宽度的地震物理模型分析[J].石油物探,2011,50(5):455-462.
[3]李凡异,魏建新,狄帮让.碳酸盐岩溶洞横向尺度变化的地震响应正演模拟[J].石油物探,2009,48(6):557-563.
[4]赵群,曲寿利,薛诗桂,等.碳酸盐岩溶洞物理模型地震响应特征研究[J].石油物探,2010,49(4):351-400.
[5]王立华,魏建新,狄帮让.溶洞物理模型地震响应及其属性分析[J].石油物探,2008,43(3):291-299.
[6]孙东,潘建国,雍学善,等.碳酸盐岩储层垂向长串珠形成机制[J].石油地球物理勘探,2010,45(1):101-106.
[7]曹鉴华,张学丰.YQ地区奥陶系碳酸盐岩岩溶储层地震属性预测[J].特种油气藏,2012,19(2):42-46.
[2]李凡异,狄帮让,魏建新,等.碳酸盐岩溶洞成像宽度的地震物理模型分析[J].石油物探,2011,50(5):455-462.
[3]李凡异,魏建新,狄帮让.碳酸盐岩溶洞横向尺度变化的地震响应正演模拟[J].石油物探,2009,48(6):557-563.
[4]赵群,曲寿利,薛诗桂,等.碳酸盐岩溶洞物理模型地震响应特征研究[J].石油物探,2010,49(4):351-400.
[5]王立华,魏建新,狄帮让.溶洞物理模型地震响应及其属性分析[J].石油物探,2008,43(3):291-299.
[6]孙东,潘建国,雍学善,等.碳酸盐岩储层垂向长串珠形成机制[J].石油地球物理勘探,2010,45(1):101-106.
[7]曹鉴华,张学丰.YQ地区奥陶系碳酸盐岩岩溶储层地震属性预测[J].特种油气藏,2012,19(2):42-46.
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