地表复杂地区地震勘探采集技术新方法
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摘要
在地表复杂地区的二维地震勘探,其地表地形复杂、起伏高差大,当在山顶处激发炮点,由于激发岩性等激发条件不理想,导致接收测线上各接收点接收到的能量差别很大,所得到的采集资料使初至速度拾取、静校正等问题更加突出,资料处理困难,且处理后效果也不理想。鉴于此,针对常规二维地震采集在复杂山区勘探中存在的问题和局限性,提出弯线结合局部宽线的二维地震勘探采集技术新方法,此方法能使勘探目标区整体覆盖次数提高的同时也能达到覆盖次数趋于均匀化,可作为地表复杂地区进行地震勘探采集的一种确实有效的勘探新方法。
On the surface complex two-dimensional seismic exploration area,its surface terrain,and the height difference big ups and downs,when excited at the Peak at gun point,since the excitation conditions are not satisfactory to stimulate lithology,resulting in receive points of receiver-lines to received energy vary widely,the collection of information obtained first arrival speed to pick up,the static correction and other issues become more prominent,data processing difficulties,and the treatment effect is not satisfactory.In view of this, for the conventional two-dimensional seismic acquisition in complex mountainous exploration of the problems and limitations of proposed curved lines combined with local wide-line two-dimensional seismic acquisition new technologies and new methods,this method enables the number of exploration target areas to improve the overall coverage,but also tend to achieve coverage of the number of homogenization,it can be used as a credible new methods of seismic exploration in a surface complex area.
On the surface complex two-dimensional seismic exploration area,its surface terrain,and the height difference big ups and downs,when excited at the Peak at gun point,since the excitation conditions are not satisfactory to stimulate lithology,resulting in receive points of receiver-lines to received energy vary widely,the collection of information obtained first arrival speed to pick up,the static correction and other issues become more prominent,data processing difficulties,and the treatment effect is not satisfactory.In view of this, for the conventional two-dimensional seismic acquisition in complex mountainous exploration of the problems and limitations of proposed curved lines combined with local wide-line two-dimensional seismic acquisition new technologies and new methods,this method enables the number of exploration target areas to improve the overall coverage,but also tend to achieve coverage of the number of homogenization,it can be used as a credible new methods of seismic exploration in a surface complex area.
引文
[1]陆基孟.地震勘探原理(上册),2005,85~120.
[2]吴铁军,沈月霞.二维勘探新观点[J].河北煤炭,2006,(4).
[3]任文军等.黄土山地多线地震采集方法[J].石油地球物理勘探,2002,37.
[4]潘瑞林,刘玉乾.山区弯线地震反射工程地质勘探技术研究.铁路工程学报,1996,(2).
[2]吴铁军,沈月霞.二维勘探新观点[J].河北煤炭,2006,(4).
[3]任文军等.黄土山地多线地震采集方法[J].石油地球物理勘探,2002,37.
[4]潘瑞林,刘玉乾.山区弯线地震反射工程地质勘探技术研究.铁路工程学报,1996,(2).
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