三维地震连片处理中的坐标转换技术
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摘要
LX构造隆起带跨越两块三维地震采集工区,为了得到目标区更清晰的地质构造,需要进行连片处理,而LX构造走向与原两块三维地震采集所设计的坐标系统不正交,且工区二缺少大地坐标信息。为了获得更好的连片处理效果,采用坐标变化技术,重新定义整个连片区域的坐标系统,不仅解决了连片处理中的坐标丢失和不一致问题,也使地质体得到更清晰的显示,获得了很好的处理效果。
LX tectonic zone steps across two work area.In order to gain more clearly geological structure of LX,3-D seismic data,Block-jointed processing scheme should be put into practice.The orientation of LX tectonic zone is not orthogonality with primary reference frame,and the geodetic coordinates of the second area are missing.In order to acquire better processing effect,a new reference frame is defined again for all work area.The coordinate convert technique not only resolve the problem of missing of geodetic coordinate and the disaccord between two area,but also reveal the geological structure more clearly.Processing result proved that the method can accomplish block-jointed processing successfully.
LX tectonic zone steps across two work area.In order to gain more clearly geological structure of LX,3-D seismic data,Block-jointed processing scheme should be put into practice.The orientation of LX tectonic zone is not orthogonality with primary reference frame,and the geodetic coordinates of the second area are missing.In order to acquire better processing effect,a new reference frame is defined again for all work area.The coordinate convert technique not only resolve the problem of missing of geodetic coordinate and the disaccord between two area,but also reveal the geological structure more clearly.Processing result proved that the method can accomplish block-jointed processing successfully.
引文
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[3]张颖,乐金,阎世信,等.三维地震资料连片处理技术及应用效果[J].石油勘探与开发,2002,29(6):58-60.
[4]刘成斋.胜利油田三维地震数据连片处理[J].石油地球物理勘探,2004,39(5):579-585.
[5]张凤军,吕延防.地震老资料连片高分辨率处理方法[J].大庆石油学院学报,2004,28(1):7-10.
[6]张科,王永刚,高磊,等.准噶尔盆地W—X断裂带三维地震资料连片处理效果分析[J].中国西部油气地质,2006,2(4):440-444.
[2]左海,魏庚雨,何小松.三维地震资料叠前连片处理技术[J].石油地球物理勘探,2008,43(增刊1):29-35.
[3]张颖,乐金,阎世信,等.三维地震资料连片处理技术及应用效果[J].石油勘探与开发,2002,29(6):58-60.
[4]刘成斋.胜利油田三维地震数据连片处理[J].石油地球物理勘探,2004,39(5):579-585.
[5]张凤军,吕延防.地震老资料连片高分辨率处理方法[J].大庆石油学院学报,2004,28(1):7-10.
[6]张科,王永刚,高磊,等.准噶尔盆地W—X断裂带三维地震资料连片处理效果分析[J].中国西部油气地质,2006,2(4):440-444.
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