碳酸盐岩中炮孔不耦合系数对地震激发效果影响的分析
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摘要
为改善碳酸盐岩中地震勘探的激发效果,针对目前爆炸激发地震波能量弱、频率高的现状,试图在震源装药不耦合系数上提出合理的改进措施。在建立震源装药爆炸载荷计算模型基础上,由编程计算得到碳酸盐岩中震源爆炸载荷和耦合能量的时间函数。分析时间函数曲线表明:该岩石条件下不耦合系数Kd=1.5时,孔壁质点压力等载荷的衰减更慢,作用时间较长,岩石介质耦合能量较大,地震激发效果最好。石灰岩条件下的现场试验与理论计算结果基本一致。地震勘探数据采集中,可借鉴本文计算方法,根据现场碳酸盐岩和炸药的波阻抗参数计算得到激发效果最佳的不耦合系数值。
In seismic exploration,usually explosive source energy is not strong enough and its frequency is high.This affects the quality of seismic data.We propose an improvement of non-coupling coefficient for seismic exploration in carbonate rocks.By building a model of detonation load,time functions of detonation load in carbonate media was calculated.The specialized experimental study shows: when the non-coupling coefficient is 1.5 in carbonate media,detonation load attenuation is slower,detonation load effect time is longer and coupling energy in rock is largest,which can generate a better seismic quality data.Theoretical calculations match very well with experimental results.This method can be used to get a non-coupling coefficient for better seismic source parameter selection in carbonate rocks.
In seismic exploration,usually explosive source energy is not strong enough and its frequency is high.This affects the quality of seismic data.We propose an improvement of non-coupling coefficient for seismic exploration in carbonate rocks.By building a model of detonation load,time functions of detonation load in carbonate media was calculated.The specialized experimental study shows: when the non-coupling coefficient is 1.5 in carbonate media,detonation load attenuation is slower,detonation load effect time is longer and coupling energy in rock is largest,which can generate a better seismic quality data.Theoretical calculations match very well with experimental results.This method can be used to get a non-coupling coefficient for better seismic source parameter selection in carbonate rocks.
引文
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[8]林大超,白春华等.爆炸地震效应.北京:地质出版社,2007
[9]宗琦,孟德君.炮孔不同装药结构对爆破能量影响的理论探讨.岩石力学与工程学报,2003,22(4):614~645Zong Qi,Meng De-jun.Influence of different kinds ofhole charging structure on explosion energy transmis-sion.Chinese Journal of Rock Mechanics and Engi-neering,2003,22(4):614~645
[10]高金石,张奇编著.爆破理论与爆破优化.陕西西安:西安地图出版社,1985
[11]赵颜军,傅菊根.不同装药结构条件下爆炸能量的理论计算.安徽理工大学学报,2004,24(3):37~39Zhao Yan-jun,Fu Ju-gen.Theoretical calculation ofexplosion energy under the conditions of differentcharges.Journal of Anhui University of Scienceand Technology,2004,24(3):37~39
[12]A H哈努卡耶夫.矿岩爆破物理过程.北京:冶金工业出版社,1980
[13]于亚伦编著.工程爆破理论与技术.北京:冶金工业出版社,2004
[2]杨贵祥.碳酸盐裸露区地震勘探采集方法.地球物理学进展,2005,20(4):1108~1128Yang Gui-xiang.The acquisition method of seismicexplorationin the bare carbonate rock area.Progressin Geophysics,2005,20(4):1108~1128
[3]朱铉,杨贵祥,敬朋贵.二次创业与南方海相碳酸盐岩油气勘探的发现与展望.地球物理学进展,2007,22(4):1255~1268Zhu Xuan,Yang Gui-xiang,Jing Peng-gui.The theo-ry of“second round of oil and gas exploration of Chi-na”and the course of the seismic exploration in thebare carbonate rock area of south China.Progress inGeophysics,2007,22(4):1255~1268
[4]李仲远.南方碳酸盐岩地区地震采集技术方法探讨.天然气工业,2009,29(6):33~36Li Zhong-yuan.Adiscussion on technologies of seis-mic data acquisitionin carbonate area of South China.Natural Gas Industry,2009,29(6):33~36
[5]张会星,宁书年,杨峰等.时延爆炸理论及应用研究.中国煤田地质,2001,13(4):47~49Zhang Hui-xing,Nin Shu-nian,Yang Feng et al.The the-oretical study of ti me-lapse explode method andits appli-cation.Coal Geology of China,2001,13(4):47~49
[6]宋玉龙,吕公河,王新红等.垂向叠加震源冲击波激发地震波的能量分析.石油地球物理勘探,2004,39(4):371~374Song Yu-long,LGong-he,Wang Xin-hong et al.A-nalysis of seismic energy produced by shock wave ofvertical stack source.OGP,2004,39(4):371~374
[7]杨勤勇,常鉴,徐国庆.灰岩裸露区地震激发机理研究.石油地球物理勘探,2009,44(4):399~405Yang Qin-yong,Chang Jian,Xu Guo-qing.Study onshooting mechanismof seismic waves inli mestone-ex-posed area.OGP,2009,44(4):399~405
[8]林大超,白春华等.爆炸地震效应.北京:地质出版社,2007
[9]宗琦,孟德君.炮孔不同装药结构对爆破能量影响的理论探讨.岩石力学与工程学报,2003,22(4):614~645Zong Qi,Meng De-jun.Influence of different kinds ofhole charging structure on explosion energy transmis-sion.Chinese Journal of Rock Mechanics and Engi-neering,2003,22(4):614~645
[10]高金石,张奇编著.爆破理论与爆破优化.陕西西安:西安地图出版社,1985
[11]赵颜军,傅菊根.不同装药结构条件下爆炸能量的理论计算.安徽理工大学学报,2004,24(3):37~39Zhao Yan-jun,Fu Ju-gen.Theoretical calculation ofexplosion energy under the conditions of differentcharges.Journal of Anhui University of Scienceand Technology,2004,24(3):37~39
[12]A H哈努卡耶夫.矿岩爆破物理过程.北京:冶金工业出版社,1980
[13]于亚伦编著.工程爆破理论与技术.北京:冶金工业出版社,2004
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