宽线加大基距组合技术在喀什北区块复杂山地的应用
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摘要
喀什北区块位于新疆塔里木盆地西端,地表起伏剧烈,地腹构造高陡、断裂发育。地震勘探难点主要表现在表层结构复杂、次生干扰严重、激发接收条件差、资料信噪比低、成像困难等。针对这些问题,在喀什北区块采用了"宽线加大基距组合"的新采集方式。宽线加大基距组合技术采集得到的地震资料与常规地震资料的对比结果表明,新的采集方式有效地提高了覆盖次数,压制了干扰波,剖面品质有了大幅度提高。这为构造解释提供了有利条件,为发现、落实构造主体和部署未来的钻探目标创造了有利条件。
North Kashgar area is located in the west of Tarim basin which is characterized by fluctuating surface,high-steep subsurface structures and developed faults.The difficulties in exploration include complex surface structure,serous secondary interference,poor shooting and receiving conditions,low signal-to-noise of the seismic data,which leads to bad imaging results.Aiming at the problems, we adopted broadened line plus long distance geophone array seismic technique to acquire seismic data in the area.The obtained seismic data was compared to conventional data.The result indicates that the new acquisition method effectively improved the fold, pressed the interference,and the quality of the seismic sections was largely increased,which provides beneficial conditions for the discovery and identification of main structures,as well as the deployment of drilling location.
North Kashgar area is located in the west of Tarim basin which is characterized by fluctuating surface,high-steep subsurface structures and developed faults.The difficulties in exploration include complex surface structure,serous secondary interference,poor shooting and receiving conditions,low signal-to-noise of the seismic data,which leads to bad imaging results.Aiming at the problems, we adopted broadened line plus long distance geophone array seismic technique to acquire seismic data in the area.The obtained seismic data was compared to conventional data.The result indicates that the new acquisition method effectively improved the fold, pressed the interference,and the quality of the seismic sections was largely increased,which provides beneficial conditions for the discovery and identification of main structures,as well as the deployment of drilling location.
引文
[1]林伯香,肖万富,李博.层析静校正在黄土塬弯宽线资料处理中的应用[J].石油物探,2007,46(4): 417-420
[2]刘依谋,梁向豪,黄有晖,等.库车坳陷复杂山地宽线采集技术及应用效果[J].石油物探,2008,47(4): 418-424
[3]吴超,彭更新,雷刚林,等.宽线加大基距组合地震技术在库车坳陷中部勘探中的应用[J].勘探地球物理进展,2008,31(4):290-295
[4]高海燕.宽线地震技术在辽河盆地西部凹陷八一水库区域勘探的应用[J].东北地震研究,2002,18(2): 57-62
[5]陆基孟.地震勘探原理[M].北京:石油大学出版社, 1993:1-242
[6]邓志军,倪宇东,陈学强,等.复杂山地三维地震勘探采集技术[J].石油物探,2002,41(1):15-22
[7]曹务祥,安树杰,蓝益军,等.排列长度对组合效应的影响分析[J].石油物探,2008,47(3):315-318
[8]曹务祥.地震资料采集中的最大干扰距离计算[J].石油物探,2007,46(1):90-93
[9]侯嵩,尹军杰,王赟.道间距对地震偏移的影响[J].石油地质与工程,2009,23(4):32-34
[10]张军华,郑旭刚,王伟,等.地震采集技术新进展[J].物探化探计算技术,2007,29(5):373-381
[11]曹务祥.检波器组合问题的分析[J].石油物探, 2008,47(5):505-510
[12]曹务祥.疏松地表对震源信号的影响与施工方法的改进[J].石油物探,2007,46(2):170-173
[13]谭绍泉.基于模型分析的潜山断裂带优化观测系统参数设计方法[J].石油物探,2004,43(5):415-422
[14]范文红.高邮凹陷深层地震勘探技术研究[J].石油物探,2004,43(6):573-577
[15]卢占国,吕景峰,刘新文,等.复杂山地宽线大组合优化应用[J].天然气勘探与开发,2009,32(1):18-25
[2]刘依谋,梁向豪,黄有晖,等.库车坳陷复杂山地宽线采集技术及应用效果[J].石油物探,2008,47(4): 418-424
[3]吴超,彭更新,雷刚林,等.宽线加大基距组合地震技术在库车坳陷中部勘探中的应用[J].勘探地球物理进展,2008,31(4):290-295
[4]高海燕.宽线地震技术在辽河盆地西部凹陷八一水库区域勘探的应用[J].东北地震研究,2002,18(2): 57-62
[5]陆基孟.地震勘探原理[M].北京:石油大学出版社, 1993:1-242
[6]邓志军,倪宇东,陈学强,等.复杂山地三维地震勘探采集技术[J].石油物探,2002,41(1):15-22
[7]曹务祥,安树杰,蓝益军,等.排列长度对组合效应的影响分析[J].石油物探,2008,47(3):315-318
[8]曹务祥.地震资料采集中的最大干扰距离计算[J].石油物探,2007,46(1):90-93
[9]侯嵩,尹军杰,王赟.道间距对地震偏移的影响[J].石油地质与工程,2009,23(4):32-34
[10]张军华,郑旭刚,王伟,等.地震采集技术新进展[J].物探化探计算技术,2007,29(5):373-381
[11]曹务祥.检波器组合问题的分析[J].石油物探, 2008,47(5):505-510
[12]曹务祥.疏松地表对震源信号的影响与施工方法的改进[J].石油物探,2007,46(2):170-173
[13]谭绍泉.基于模型分析的潜山断裂带优化观测系统参数设计方法[J].石油物探,2004,43(5):415-422
[14]范文红.高邮凹陷深层地震勘探技术研究[J].石油物探,2004,43(6):573-577
[15]卢占国,吕景峰,刘新文,等.复杂山地宽线大组合优化应用[J].天然气勘探与开发,2009,32(1):18-25
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