复杂陡构造圈闭落实方法——以克深2号构造为例
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摘要
地表及地下构造的复杂性使库车复杂山地陡构造圈闭落实面临诸多难点。2005年以来,对复杂山地地震勘探技术,尤其是地震采集及速度精细建模技术进行了重点攻关研究,最终形成了一套系统的复杂山地构造圈闭落实方法,即用复杂山地地震采集技术锁定构造样式,用表层速度反演建模技术、t0漂移校正技术等变速成图技术体系落实高陡构造圈闭,并在构造主体部位用叠前深度偏移成果进行对比验证,以达到提高复杂山地构造圈闭落实精度的目的。该方法在塔里木复杂山地的推广应用取得了良好的效果。
The complexity of surface and subsurface structures makes Kuqa complex and cliffy structural trap be difficultly ascertained.Since 2005,the stress has been placed on study of complex mountainous seismic exploration technique,especially related seismic acquisition and fine velocity modeling techniques,and finally establishing a systematic method for ascertaining complex cliffy structural traps.This paper presents the method,including the seismic acquisition technique for ascertaining structural style,the superficial velocity inversion modeling technique,T0 drift correction technique and variable velocity mapping technique,for determination of cliffy structural traps.Also,the prestack depth migration outcome at the main part of structure is used to make a correlation and validation for the purpose of improving the precision of ascertaining the complex cliffy structural traps.The application of this method to complex mountains in Tarim basin receives good effectiveness.
The complexity of surface and subsurface structures makes Kuqa complex and cliffy structural trap be difficultly ascertained.Since 2005,the stress has been placed on study of complex mountainous seismic exploration technique,especially related seismic acquisition and fine velocity modeling techniques,and finally establishing a systematic method for ascertaining complex cliffy structural traps.This paper presents the method,including the seismic acquisition technique for ascertaining structural style,the superficial velocity inversion modeling technique,T0 drift correction technique and variable velocity mapping technique,for determination of cliffy structural traps.Also,the prestack depth migration outcome at the main part of structure is used to make a correlation and validation for the purpose of improving the precision of ascertaining the complex cliffy structural traps.The application of this method to complex mountains in Tarim basin receives good effectiveness.
引文
[1]李庆忠,陈祖钧.组合对反射波的压制和改造[J].石油地球物理勘探,1984,12(3):34-37.
[2]胡杰,张金岗,张立军,等.柴达木盆地复杂山地采集技术及效果[J].中国石油勘探,2006,22(6):51-58.
[3]满益志,黄录忠,苏永斌,等.模型层析成图技术在山前高陡构造区的应用[J].石油地球物理勘探,2002,37(增刊):125-127.
[4]王兴军,满益志,赖敬容,等.复杂山地速度建场新方法在秋参1井区的应用[J].新疆地质,2008,26(2):206-206.
[2]胡杰,张金岗,张立军,等.柴达木盆地复杂山地采集技术及效果[J].中国石油勘探,2006,22(6):51-58.
[3]满益志,黄录忠,苏永斌,等.模型层析成图技术在山前高陡构造区的应用[J].石油地球物理勘探,2002,37(增刊):125-127.
[4]王兴军,满益志,赖敬容,等.复杂山地速度建场新方法在秋参1井区的应用[J].新疆地质,2008,26(2):206-206.
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