地震勘探采集中尾锥因素对检波器耦合系统的影响
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摘要
介绍了检波器耦合的叠加效应和耦合谐振模型,为提高对耦合系统的描述精度,提出了检波器耦合系统的二自由度模型。设计了一系列包括实验室测试及室外测试的试验,测试尾锥在不同长度、质量、材料、土壤等情况下检波器的频率响应特性。测试结果验证了叠加效应模型,部分支持二自由度模型,试验结果没有验证耦合谐振模型。新模型和试验结果有助于改善检波器耦合系统,进而提高地震勘探数据采集的精度。
The stacking effect model and coupling resonance model were presented.The two-freedom model which gives high description precision of coupling system was proposed.In order to exam the validation of the three models,a series of laboratory and field tests on the frequency response of the detector were performed by systematically changing the length,mass,component material of tail-cone as well as the ground condition.The analysis result didnt verify the coupling resonance model,but verified the stacking effect model.The two-freedom model was supported to some extent.The model and the experimental results can help to improve data acquiring precision during seismic exploration.
The stacking effect model and coupling resonance model were presented.The two-freedom model which gives high description precision of coupling system was proposed.In order to exam the validation of the three models,a series of laboratory and field tests on the frequency response of the detector were performed by systematically changing the length,mass,component material of tail-cone as well as the ground condition.The analysis result didnt verify the coupling resonance model,but verified the stacking effect model.The two-freedom model was supported to some extent.The model and the experimental results can help to improve data acquiring precision during seismic exploration.
引文
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[10]冯兴强,王勋杰,杨长春.基于最大似然准则的f-x-y域l1模预测滤波方法[J].石油大学学报:自然科学版,2005,29(4):30-34.FENG Xing-qiang,WANG Xun-jie,YANG Chang-chun.Prediction filtering method usingl1norm basedon maximum likelihood rule inf-x-ydomain[J].Jour-nal of the University of Petroleum,China(Edition ofNatural Science),2005,29(4):30-34.
[2]CHRISTINE E Krohn.Geophone ground coupling[J].Geophysics,1984,49(6):722-731.
[3]SINGH V,CHANDOLA S K,BHAGAT S,et al.Seis-mic resolution and geophone ground coupling[C]//67thAnnual SEG Meeting Expanded Abstratcts Biography.c1997:130-133.
[4]TAN T H.Reciprocity theorem applied to geophone-ground coupling problem[J].Geophysics,1987,52.
[5]VOS J.A theoretical and experimental approach to the geo-phone-ground coupling problem based on acoustic reciprocity[R].SEG Expanded Abstracts,1995,1 003-1 006.
[6]FABER K,MAXWELL P W,EDELMANN,et al.Recording reliability in seismic exploration as influencedby geophone-ground coupling[C]//5th EAEG meetingand exhibition at Vienna.Austria:1994.
[7]宋玉龙,丁伟,胡立新,等.陆上复杂地表检波器耦合技术研究[R].中石化集团公司科研报告,2004.
[8]宋丽莉,葛洪魁,王宝善.疏松砂岩弹性波速模型的研究[J].石油大学学报:自然科学版,2004,28(6):38-40.SONG Li-li,GE Hong-kui,WANG Bao-shan.Study ofmodel for elastic wave velocity of unconsolidated sand-stone[J].Journal of the University of Petroleum,China(Edition of Natural Science),2004,28(6):38-40.
[9]朱振宇,刘洪.稀疏反褶积方法及其应用[J].石油大学学报:自然科学版,2005,29(6):26-28.ZHU Zhen-yu,LIU Hong.Sparse deconvolution methodand its application[J].Journal of the University ofPetroleum,China(Edition of Natural Science),2005,29(6):26-28.
[10]冯兴强,王勋杰,杨长春.基于最大似然准则的f-x-y域l1模预测滤波方法[J].石油大学学报:自然科学版,2005,29(4):30-34.FENG Xing-qiang,WANG Xun-jie,YANG Chang-chun.Prediction filtering method usingl1norm basedon maximum likelihood rule inf-x-ydomain[J].Jour-nal of the University of Petroleum,China(Edition ofNatural Science),2005,29(4):30-34.
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