也门71区山地可控震源激发技术
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摘要
也门71区块地表异常复杂,尤其是山地部分表层破碎底层坚硬,激发条件差,导致钻机打井困难,炸药能量散失严重,各种次生干扰的衍生导致资料信噪比低,成像困难。特殊的地表条件给技术设计和野外施工带来极大不便,而可控震源在山地的应用能够较好的弥补炸药震源的不足。为此,通过分析71区块山地的地表地质条件,借鉴相似工区的施工经验,对71区块山地的可控震源技术进行详细的研究。通过优选可控震源的扫描频率、扫描长度、出力、扫描次数和震源台数等参数,总结出一套适合也门71区块山地的可控震源激发技术,应用于野外生产并取得良好效果。71区块山地资料品质大幅度提高,同时该技术的研究成功也为也门乃至中东北非类似地区的地震勘探提供了有益的参考。
The surface of Yemen Block 71 is very complex,especially in mountain part,the surface is broken and understratum is too hard.It is very difficult to drill the hole because of the poor exploding condition.Serious loss of explosive energy and serial secondary interference cause low S/N radio and difficulty of data imaging.Special surface conditions cause great inconvenience to the technical design and field operation,and the application of vibrator in the mountains is able to compensate for the lack of explosive source.Then,we make resarch of the vibrator technology by analyzing the mountain surface geological conditions and referring experience in similar area.By optimizing sweep frequency,sweep length,power out,sweep time&number and other parameters of vibrator,we got the proper vibrator exploding technology and achieved good application results.This technology enhance seismic data quality and provide beneficial reference for seismic exploration in Yemen and Middle East & North Africa.
The surface of Yemen Block 71 is very complex,especially in mountain part,the surface is broken and understratum is too hard.It is very difficult to drill the hole because of the poor exploding condition.Serious loss of explosive energy and serial secondary interference cause low S/N radio and difficulty of data imaging.Special surface conditions cause great inconvenience to the technical design and field operation,and the application of vibrator in the mountains is able to compensate for the lack of explosive source.Then,we make resarch of the vibrator technology by analyzing the mountain surface geological conditions and referring experience in similar area.By optimizing sweep frequency,sweep length,power out,sweep time&number and other parameters of vibrator,we got the proper vibrator exploding technology and achieved good application results.This technology enhance seismic data quality and provide beneficial reference for seismic exploration in Yemen and Middle East & North Africa.
引文
[1]裴全理.也门71区块地震资料采集方法[A].勘探地球物理进展,2008,31(4):285～289.
[2]陈强.可控震源激发技术在地震勘探中的效果.中国高新技术企业,2010,2010,16(1):44～46.
[3]吕公河.黄土塬地区地震勘探采集技术[J].石油物探,2001,40(2):89～91.
[4]张新生.浅谈可控震源在煤田地震勘探中的应用[B].河北煤炭,2006,4(1):20～22.
[5]邓述全.可控震源高效交替扫描技术的应用效果分析[J].勘探地球物理进展,2006,29(1):34～37.
[2]陈强.可控震源激发技术在地震勘探中的效果.中国高新技术企业,2010,2010,16(1):44～46.
[3]吕公河.黄土塬地区地震勘探采集技术[J].石油物探,2001,40(2):89～91.
[4]张新生.浅谈可控震源在煤田地震勘探中的应用[B].河北煤炭,2006,4(1):20～22.
[5]邓述全.可控震源高效交替扫描技术的应用效果分析[J].勘探地球物理进展,2006,29(1):34～37.
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