原始地震道校正组合技术
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摘要
全数字化地震数据采集设备和计算机地震数据处理系统能力的提高,使室内以提高高频地震信号信噪比为目标的处理技术得以实现。原始地震道校正组合技术在减少高频信号损失、提高信噪比方面效果明显。对比模拟野外检波器组合实验与地震道校正组合可知,随着组合道数的增加,高频干扰波能量明显减少,但模拟野外检波器组合却存在有效波高频振幅值下降的问题;相反,地震道校正组合即可有效降低高频干扰又能保证反射波明显增强。实例表明地震道校正组合技术在识别小断层和小间距煤层方面效果显著。
The improvements of fully digitalized seismic data acquisition devices and computerized seismic data processing ability can realize indoor processing technology aimed to improve S/N ratio of high-frequency seismic signals.The original seismic correction resultant technology has obvious effects on high-frequency signal loss reduction and S/N ratio improvement.Contrast of analogous field geophone grouping experiment and seismic trace correction resultant can see: along with the increasing of grouping traces,the energy of high-frequency disturbing wave reduced obviously,but analogous field geophone grouping existed the issue of effective wave high-frequency amplitude drop down;on the contrary,seismic trace correction resultant can reduce high-frequency disturbing and ensure reflection wave enhancing obviously.Examples have demonstrated that the seismic trace correction resultant technology has notable effects on minor faults and small interval coal seams identification.
The improvements of fully digitalized seismic data acquisition devices and computerized seismic data processing ability can realize indoor processing technology aimed to improve S/N ratio of high-frequency seismic signals.The original seismic correction resultant technology has obvious effects on high-frequency signal loss reduction and S/N ratio improvement.Contrast of analogous field geophone grouping experiment and seismic trace correction resultant can see: along with the increasing of grouping traces,the energy of high-frequency disturbing wave reduced obviously,but analogous field geophone grouping existed the issue of effective wave high-frequency amplitude drop down;on the contrary,seismic trace correction resultant can reduce high-frequency disturbing and ensure reflection wave enhancing obviously.Examples have demonstrated that the seismic trace correction resultant technology has notable effects on minor faults and small interval coal seams identification.
引文
[1]方良才,等.三维勘探成果材料在潘三矿的验证与应用———中国煤炭分会第六届青年科技研讨会论文集[R].北京:煤炭工业出版社,2000.11
[2]王言剑.采区三维地震勘探的实践与认识[J].煤矿开采,2007,12(2):17-18.
[3]范庆武,等.关于兖州、济宁煤田探采对比研究[J].中国煤炭地质,1999,11(4):24-26.
[4]程建远,等.煤矿采区三维勘探探采对比效果分析与思考[J].中国煤炭地质,2010,22(8):67-7.
[5](美)R.E谢里夫编.勘探地震学[M].北京:石油出版社,1999.
[6]何巧登.地震勘探原理和方法[M].北京地质出版社,1986.
[7]曹务祥.检波器组合问题分析[J].石油物探,2008,47(5):505-510.
[2]王言剑.采区三维地震勘探的实践与认识[J].煤矿开采,2007,12(2):17-18.
[3]范庆武,等.关于兖州、济宁煤田探采对比研究[J].中国煤炭地质,1999,11(4):24-26.
[4]程建远,等.煤矿采区三维勘探探采对比效果分析与思考[J].中国煤炭地质,2010,22(8):67-7.
[5](美)R.E谢里夫编.勘探地震学[M].北京:石油出版社,1999.
[6]何巧登.地震勘探原理和方法[M].北京地质出版社,1986.
[7]曹务祥.检波器组合问题分析[J].石油物探,2008,47(5):505-510.
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