复杂山地近地表结构综合调查及建模技术研究
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摘要
复杂山区近地表调查技术是制约地震资料品质的主要因素。这里利用地质雷达和高密度电法相配合,在四川南江山区进行了近地表结构综合调查。地质雷达探测精度高,高密度电法探测深度大且能有效补充介质电性信息。通过微测井数据进行标定,建立了近地表结构的深度和速度模型,为地震静校正提供了依据。经研究结果表明,采用近地表调查数据进行静校正的地震品质得到了提高。
The near-surface survey techniques in complex mountain areas is a key factor controlling the seismic acquisition quality. This paper uses the ground penetrating radar (GPR) and the high density resistivity method to survey near-surface structure in Nanjiang mountain areas of Sichuang. The GPR can provide high precision structure of sub-surface, but the resistivity method can survey more deep and get resistivity information. Then it used microlog to correct the data, ultimately obtained the near-surface depth and velocity model for static correction of seismic data. The results shows that the seismic acquisition quality becomes better by static correction with near-surface survey data.
The near-surface survey techniques in complex mountain areas is a key factor controlling the seismic acquisition quality. This paper uses the ground penetrating radar (GPR) and the high density resistivity method to survey near-surface structure in Nanjiang mountain areas of Sichuang. The GPR can provide high precision structure of sub-surface, but the resistivity method can survey more deep and get resistivity information. Then it used microlog to correct the data, ultimately obtained the near-surface depth and velocity model for static correction of seismic data. The results shows that the seismic acquisition quality becomes better by static correction with near-surface survey data.
引文
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[11]成爱民,刘怀山,刘斌.西部地区近地表调查技术研究及应用[J].海洋地质动态,2006,22(2):29.
[12]严良俊,苏朱刘,胡文宝,等.浅层瞬变反演电阻率资料在表层速度成像中的应用[J].石油物探,2004,43(5):487.
[13]肖鹏飞,孙开峰,曲寿利,等.电阻率法在复杂地区近地表速度建模中的应用[J].石油物探,2008,47(6):624.
[2]MCMECHAN G A,LOUCKS R G.Ground penetratingradar imaging of a collapsed paleocave system in the El-lenburger dolomite,central Texas[J].J Applied Geo-physics,1998,39:1.
[3]MESCHEDE M,ASPERION U.Visualization of tectonicstructures in shallow-depth high resolution ground pene-trating radar(GPR)profiles[J].Terra Nova,1999,9(4):167.
[4]ASPRION U,AIGNER T.An initial attempt to map car-bonate buildups using ground-penetrating radar:an ex-ample from the Upper J urrassic of SW-Germany[J].Facies,2000,42:245.
[5]CORBEANU R M,SOEGAARD K.Detailed internal ar-chitecture of a fluvial channel sandstone determinedfrom outcrop,cores,and 3-D ground-penetrating radar:example from the middle Cretaceous Ferron sandstone,east-central Utah[J].AAPGBulletin,2001,85(9):1583.
[6]UDPHUAY,SPENCER H W.Outcrop-scale imaging oflacustrine delta sediments using ground penetrating ra-dar and seismic methods[C].SEG Expanded Ab-stracts,2004,23:1468.
[7]朱根法.地质雷达在山地地震勘探表层地震地质条件调查中的应用[J].物探装备,2001,11(4):291.
[8]王建民,刘财,杨宝俊,等.地质雷达技术在巴彦查干地区地震勘探中的应用[J].地球物理学进展,2002,17(4):745.
[9]王建民,刘财,杨宝俊.地质雷达技术在表层地震地质条件调查中的应用[J].石油物探,2003,42(1):54.
[10]谭绍泉,刘泰生,徐锦玺,等.地质雷达技术在表层结构调查中的应用与研究[J].石油物探,2003,42(1):59.
[11]成爱民,刘怀山,刘斌.西部地区近地表调查技术研究及应用[J].海洋地质动态,2006,22(2):29.
[12]严良俊,苏朱刘,胡文宝,等.浅层瞬变反演电阻率资料在表层速度成像中的应用[J].石油物探,2004,43(5):487.
[13]肖鹏飞,孙开峰,曲寿利,等.电阻率法在复杂地区近地表速度建模中的应用[J].石油物探,2008,47(6):624.
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