准噶尔盆地沙漠区地震检波器耦合研究
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摘要
通过对检波器耦合理论研究 ,根据沙漠区的地震环境和地表结构 ,设计出了不同类型的检波器耦合装置 ,增加了检波器与沙漠地表的耦合性能。从野外进行对比试验资料分析 ,在沙漠区地震检波器耦合具有高分辨率、抗干扰、耦合性好、适应领域广等特性 ,接收的地震信号能量、优势信噪比频带宽度和信号保真度等方面均有明显提高 ,将从根本上解决沙漠区高分辨率和深层地震勘探的难题。
Through a study of geophone coupling theory, accor di ng to the seismic environment of the desert area, different shapes of geophones were designed to weaken the noise produced by sound wave, wind wave, fluid mediu m, electromagnetism etc; according to the surface structure of desert area, diff erent types of tailcone were designed to enhance the coupling between the geoph one and the desert surface. The preliminary analysis of testing data in the fiel d shows that the new type of geophone in the desert area is of high resolution, strong capability in anti interference, good coupling,and wide adaptation for different fields. The results show that compared with the conventional coupling model, this method is capable of obtaining seismic reflection signal's that are better in energy, frequency bandwidth and fidelity.
Through a study of geophone coupling theory, accor di ng to the seismic environment of the desert area, different shapes of geophones were designed to weaken the noise produced by sound wave, wind wave, fluid mediu m, electromagnetism etc; according to the surface structure of desert area, diff erent types of tailcone were designed to enhance the coupling between the geoph one and the desert surface. The preliminary analysis of testing data in the fiel d shows that the new type of geophone in the desert area is of high resolution, strong capability in anti interference, good coupling,and wide adaptation for different fields. The results show that compared with the conventional coupling model, this method is capable of obtaining seismic reflection signal's that are better in energy, frequency bandwidth and fidelity.
引文
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[16] VermeerJO.3-D Seism icSurveyDesign[M].Tulsa,USA:Investigations inGeophysics12,SEG 2002
[17] ChiraP,HubralP.Traveltime formulas of near- zero- offsetprimary reflections for a curved2D m easurem entsurface[J].Geophysics,2003,68(1):255～261
[18] RodenR.SEG SaltLake city2002[J].TheLeadingEdge,2003,22(2):141～162
[2] 谢里夫R E,吉尔达特L P.勘探地震学[M].北京:石油工业出版社,1999:276～295
[3] 陆基孟.地震勘探原理[M].东营:石油大学出版社,1993:85～188
[4] 贾伯年,俞 朴.传感器技术[M].南京:东南大学出版社,2000:38～201
[5] 安毓英,曾小东.光学传感与测量[M].北京:电子工业出版社,2001:102～254
[6] 刘怀山.在高分辨率地震勘探中高频检波器的应用效果[J].地球物理技术汇编,1992(17):151～159
[7] 陈才和,李淑清,丁桂兰,等.全光纤加速度检波器的信号处理系统[J].天津大学学报,1999,32(3):315～318
[8] 董世学,韩立国,王建民,等.检波器-地表耦合系统对地震记录的影响[J].地球物理学报,2001(增刊44):161～169
[9] 董世学,张春雨.检波器性能与精确地震勘探[J].石油物探,2000,39(2):124～130
[10] 李庆忠.走向精确勘探的道路[M].北京:石油工业出版社,1993:45～60
[11] 汪云家,刘怀山,付大志.光纤数字地震检波器初探[J].石油物探,2002(增刊41):245～246
[12] HooverG M,ObrienJT.The influence of the planted geophone on seismicland data[J].Geophysics,1980,45(8):1239～1244
[13] KrohnE C.Geophone ground coupling[J].Geophysics,1984,49(4):722～731
[14] LucoJ E,AndersonJ G,GeorgevichM.Soil- structure interaction effects on strong motion accelerogramsrecorded on instrumentshelters[J].EarthquakeEngineering andStructuralDynamics,1990,19:119～131
[15] YilmazO.SeismicDataAnalysis[M].Tulsa,U SA:Investigations inGeophysics10,SEG2001
[16] VermeerJO.3-D Seism icSurveyDesign[M].Tulsa,USA:Investigations inGeophysics12,SEG 2002
[17] ChiraP,HubralP.Traveltime formulas of near- zero- offsetprimary reflections for a curved2D m easurem entsurface[J].Geophysics,2003,68(1):255～261
[18] RodenR.SEG SaltLake city2002[J].TheLeadingEdge,2003,22(2):141～162
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