复杂断裂带高精度地震采集技术及效果
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摘要
"十一五"期间,江苏油田相继在GY凹陷的HL、ZW和WB断裂带部署了YA、ZD、ZL和CB共4块高精度三维地震采集区域。3个断裂带断层发育,构造破碎,火成岩对下伏地层能量屏蔽严重,地震资料品质较差;地表条件复杂,激发、接收条件横向变化大。为此,从观测系统、激发和接收3方面入手开展方法研究,形成了面向目标的观测系统优化技术、以精细表层结构调查为重点的最佳激发参数优选技术、基于保护高频成分的接收等技术,寻找到了一套适合GY凹陷复杂断裂带的高精度地震采集技术系列,达到了落实小断层分布,提高地震资料品质的目的。
High-precision seismic data acquisition was performed on Fault Blocks YA,ZD,ZL and CB at HL,ZW and WB Fault Zones of in Gaoypu Depression by JOECO in the period of 11th National Five Year Plan.Fault zones were developed and structures were breaking the underlying energy was shielded by volcanic rocks and there were big lateral changes of shooting and receiving on the surface etc,which resulted in poor quality of seismic data.Aiming at such problems,high-precision 3D seismic data acquisition techniques were studied from geometry,shooting and receiving parameters.A series of high-precision seismic data acquisition techniques were formed,including target geometry optimization technique,optimal shooting parameters selecting technique focusing on detail surface structure investigation,receiving parameter optimization technique based on protecting high frequency signal.In Gaoyou Depression,a series of high-precision seismic data acquisition techniques are applied and the purpose to obtain seismic profiles with high S/N ratio,abundant and high frequency information and to identify small fault distribution is achieved.
High-precision seismic data acquisition was performed on Fault Blocks YA,ZD,ZL and CB at HL,ZW and WB Fault Zones of in Gaoypu Depression by JOECO in the period of 11th National Five Year Plan.Fault zones were developed and structures were breaking the underlying energy was shielded by volcanic rocks and there were big lateral changes of shooting and receiving on the surface etc,which resulted in poor quality of seismic data.Aiming at such problems,high-precision 3D seismic data acquisition techniques were studied from geometry,shooting and receiving parameters.A series of high-precision seismic data acquisition techniques were formed,including target geometry optimization technique,optimal shooting parameters selecting technique focusing on detail surface structure investigation,receiving parameter optimization technique based on protecting high frequency signal.In Gaoyou Depression,a series of high-precision seismic data acquisition techniques are applied and the purpose to obtain seismic profiles with high S/N ratio,abundant and high frequency information and to identify small fault distribution is achieved.
引文
[1]晁如佑,张福祥,高春红.复杂平原水网地区高精度三维地震采集技术——以GY凹陷YA、ZD高精度三维地震勘探为例[J].石油天然气学报,2010,32(2):86～89.
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[3]石一青,徐继伟,高宏江.江苏水网地区高分辨率三维地震采集技术研究[J].石油物探,2005,44(3):264～271.
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[7]尹成,吕公河,田继东,等.基于地球物理目标参数的三维地震观测系统优化设计[J].石油物探,2001,45(1):74～78.
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[10]赵生斌.可分面元三维观测系统设计研究[J].石油地球物理勘探,2000,35(3):333～338.
[11]谭胜章,杜惠平,宋国良,等.高精度三维地震资料采集技术——以官渡地区山地地震勘探为例[J].石油物探,2007,46(1):74～80.
[12]成云,高冬梅.中古生界地震资料采集技术研究[J].石油天然气学报,2010,32(2):83～85.
[13]陆基孟.地震勘探原理(上册)[M].东营:石油大学出版社,1993.130～138.
[2]包洪刚,付英露,冷世华.高精度三维地震采集在竹墩复杂断阶带中的应用[J].石油天然气学报,2010,32(3):252～254.
[3]石一青,徐继伟,高宏江.江苏水网地区高分辨率三维地震采集技术研究[J].石油物探,2005,44(3):264～271.
[4]段书富,马永乐,侯伯军.GY凹陷公道三维地震勘探二次采集技术[J].勘探装备,2004,14(2):92～97.
[5]朱相雨,王远见.江苏复杂水网地区地震采集方法[J].石油物探,2003,42(3):355～360.
[6]李瑞磊,于鹏,杨饶平,等.梨树断陷高精度三维地震勘探效果分析[J].石油物探,2010,49(6):584～590.
[7]尹成,吕公河,田继东,等.基于地球物理目标参数的三维地震观测系统优化设计[J].石油物探,2001,45(1):74～78.
[8]尹成,吕公河,田继东,等.三维观测系统属性分析与优化设计[J].石油地球物理勘探,2005,40(5):495～498.
[9]赵军国,郑泽继,杨德宽.平原地区复杂地表三维采集技术[J].石油地球物理勘探,1999,34(3):341～350.
[10]赵生斌.可分面元三维观测系统设计研究[J].石油地球物理勘探,2000,35(3):333～338.
[11]谭胜章,杜惠平,宋国良,等.高精度三维地震资料采集技术——以官渡地区山地地震勘探为例[J].石油物探,2007,46(1):74～80.
[12]成云,高冬梅.中古生界地震资料采集技术研究[J].石油天然气学报,2010,32(2):83～85.
[13]陆基孟.地震勘探原理(上册)[M].东营:石油大学出版社,1993.130～138.
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