三维叠前时间偏移技术在江苏高邮凹陷的应用
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摘要
当地下地质构造复杂、断裂发育,横向速度变化不太剧烈的情况下,三维叠前时间偏移是一种提高偏移成像精度的行之有效的方法。三维叠前时间偏移取得成功除了有一套高保真、高信噪比的叠前数据之外,还须建立一个合理的三维偏移速度场。通过对江苏油田高邮地区实际三维地震资料处理,解决了叠后时间偏移无法查清的复杂断块的成像以及火成岩岩下目标层的成像问题。钻探结果与处理结果相吻合,证实了三维叠前时间偏移技术是解决高邮地区复杂构造成像的一种好方法。
In a situation that the underground feature is complex geologic structure,developing fault and gentle variation of lateral velocity,the 3-D prestack time migration is feasible method for improving the precision of migration imaging.The key achieving successful 3-D prestack time migration is to build up the reasonable 3-D migration velocity field besides having a set of hi-fi and high S/N ratio prestack data.The issues that the imaging of complex fault blocks cafft be identified by prestack time migration and targets below igneous rock before can be solved now by the practical 3-D seismic data process data in Gaoyou area of Jiangsu Oilfield.The correlation of drilling results is identical to processed results,proving that the 3-D prestack time migration technique is good method for solving the imaging of complex structure in Gaoyou area.
In a situation that the underground feature is complex geologic structure,developing fault and gentle variation of lateral velocity,the 3-D prestack time migration is feasible method for improving the precision of migration imaging.The key achieving successful 3-D prestack time migration is to build up the reasonable 3-D migration velocity field besides having a set of hi-fi and high S/N ratio prestack data.The issues that the imaging of complex fault blocks cafft be identified by prestack time migration and targets below igneous rock before can be solved now by the practical 3-D seismic data process data in Gaoyou area of Jiangsu Oilfield.The correlation of drilling results is identical to processed results,proving that the 3-D prestack time migration technique is good method for solving the imaging of complex structure in Gaoyou area.
引文
[1]马在田．地震偏移成像．北京：石油工业出版社，1989
[2]马在田等．计算地球物理学概论．上海：同济大学出版社，1997
[3]R E谢里夫，L P吉而达特编，初英等译．勘探地震学(第二版)．北京：石油工业出版社，1999
[4]李振春．地震成像理论与方法．北京：石油大学研究生院，2004
[5]熊翥．初谈复杂构造成像技术．物探科技通报，1993，11(4)
[6]渥·伊尔马滋著，黄绪德译．地震数据处理．北京：石油工业出版社，1994
[7]李庆忠．走向精确勘探的道路．北京：石油工业出版社，1993
[8]熊翥．地震数据数字处理应用技术．北京：石油工业出版社，1993
[9]李振春，张军华．地震数据处理方法．山东东营：石油大学出版社，2004
[10]熊翥．复杂地区地震数据处理思路．北京：石油工业出版社，2002
[11]程荃．改进的叠前去噪方法．石油地球物理勘探，1999，34(4)：453～456
[2]马在田等．计算地球物理学概论．上海：同济大学出版社，1997
[3]R E谢里夫，L P吉而达特编，初英等译．勘探地震学(第二版)．北京：石油工业出版社，1999
[4]李振春．地震成像理论与方法．北京：石油大学研究生院，2004
[5]熊翥．初谈复杂构造成像技术．物探科技通报，1993，11(4)
[6]渥·伊尔马滋著，黄绪德译．地震数据处理．北京：石油工业出版社，1994
[7]李庆忠．走向精确勘探的道路．北京：石油工业出版社，1993
[8]熊翥．地震数据数字处理应用技术．北京：石油工业出版社，1993
[9]李振春，张军华．地震数据处理方法．山东东营：石油大学出版社，2004
[10]熊翥．复杂地区地震数据处理思路．北京：石油工业出版社，2002
[11]程荃．改进的叠前去噪方法．石油地球物理勘探，1999，34(4)：453～456
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