川东南涪陵地区长兴组礁滩储层三维地震识别
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摘要
以沉积相研究为指导建立地质模型,通过地震正演建立起地震响应模式,在高精度地震成像资料的精细构造解释的基础上利用层拉平、三维可视化等技术恢复古地貌,研究原始沉积格局。根据研究区的实际情况,主要分析了地震波的速度、振幅、相位、频率等参数的变化幅度、范围,在准确的储层标定基础上选取代表目标储层的时窗段,依据储层的地震响应特征采用了振幅类、频率类等属性对长兴组礁滩储层进行了预测。
In this study,a geological model is developed based on the research on sedimentary facies of Changxing reef shoal reservoir in Fuling area,southeastern Sichuan Basin;a seismic-response pattern is also established through seismic forward on the basis of fine structural interpretation;and paleogeomorphic environment is reconstructed and original sedimentary framework is analyzed by some technologies of both layer flattening and 3D visualization.In addition,both variation amplitude and range of some seismic-wave parameters,including velocity,amplitude,phase and frequency,are analyzed for the study area;and then,time-window interval representing target reservoir is selected based on accurate reservoir calibration;at last,Changxing reef shoal reservoir is predicted by some seismic attributes of amplitude and frequency according to seismic-response characteristics.
In this study,a geological model is developed based on the research on sedimentary facies of Changxing reef shoal reservoir in Fuling area,southeastern Sichuan Basin;a seismic-response pattern is also established through seismic forward on the basis of fine structural interpretation;and paleogeomorphic environment is reconstructed and original sedimentary framework is analyzed by some technologies of both layer flattening and 3D visualization.In addition,both variation amplitude and range of some seismic-wave parameters,including velocity,amplitude,phase and frequency,are analyzed for the study area;and then,time-window interval representing target reservoir is selected based on accurate reservoir calibration;at last,Changxing reef shoal reservoir is predicted by some seismic attributes of amplitude and frequency according to seismic-response characteristics.
引文
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[5]马永生,郭旭升,凡睿.川东北普光气田飞仙关组鲕滩储集层预测[J].石油勘探与开发,2005,32(4):60-64.
[2]贺振华,蒲勇,熊晓军,等.川东北长兴—飞仙关组礁滩储层的三维地震识别[J].沉积学报,2009,31(1):1-5.
[3]敬朋贵.川东北地区礁滩相储层预测技术与应用[J].石油物探,2007,46(4):363-369.
[4]刘殊,郭旭升,马宗晋,等.礁滩相地震响应特征和油气勘探远景[J].石油物探,2006,45(5):452-458.
[5]马永生,郭旭升,凡睿.川东北普光气田飞仙关组鲕滩储集层预测[J].石油勘探与开发,2005,32(4):60-64.
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