充液井孔中的相控线阵声波辐射器在地层中产生的声场
|
摘要
应用有限元法研究了充液井孔中的相控线阵声波辐射器在井外地层中产生的声场 ,探讨了增强声源向地层的某一特定方向辐射的声波能量的方法 .采用相控线阵声波辐射器并调节其参数可以控制由充液井孔向地层中辐射的声波能量的方向 ,使声源向地层中的某个特定方向辐射的纵波能量得到明显提高 .在井间地震勘探和反射声波成像测井等领域中应用相控线阵声波辐射器 ,将有利于增大探测深度、提高探测分辨率和接收信号的信噪比
Acoustic field in formation generated by linear phased array transmitters in fluid-filled boreholes, as well as the method to intensify the acoustic energy radiated from the source in the borehole to the formation, is investigated using the finite element method (FEM). The direction of the radiated energy to the formation generated by the source in the borehole can be steered by means of adjusting the parameters of the linear phased array transmitter, which can result in obviously intensified radiated energy of the compressional wave in certain direction in the formation. Therefore, the depth and resolution of investigation and signal-to-noise ratio of the received signal can be improved by employing linear phased array transmitters in the area of crosswell seismic survey and the new rising borehole acoustic reflection imaging.
Acoustic field in formation generated by linear phased array transmitters in fluid-filled boreholes, as well as the method to intensify the acoustic energy radiated from the source in the borehole to the formation, is investigated using the finite element method (FEM). The direction of the radiated energy to the formation generated by the source in the borehole can be steered by means of adjusting the parameters of the linear phased array transmitter, which can result in obviously intensified radiated energy of the compressional wave in certain direction in the formation. Therefore, the depth and resolution of investigation and signal-to-noise ratio of the received signal can be improved by employing linear phased array transmitters in the area of crosswell seismic survey and the new rising borehole acoustic reflection imaging.
引文
[1] ChangC ,HoyleD ,WatanabeS ,etal.Localizedmapsofthesubsur face.OilfieldReview,1998,10(1):56～66
[2] DongW ,ToksozMN .Boreholeseismic sourceradiationpatternintransverselyisotropicmedia.Geophysics,1995,60(1):29～42
[3] DongW ,BouchonM ,ToksozMN .Boreholeseismic sourceradiationinlayeredisotropicandanisotropicmedia:boundaryelementmodel ing.Geophysics,1995,60(3):735～747
[4] 乔文孝,杜光升,陈雪莲.相控线阵声波辐射器在声波测井中应用的可行性分析.地球物理学报,2002,45(5):714～722QiaoWX ,DuGS ,ChenXL .Feasibilityofapplicationoflinearphasedarrayacoustictransmitterstoacousticwell logging.ChineseJ .Geophys.(inChinese),2002,45(5):714～722
[5] QiaoWX ,ChenXL ,DuGS ,etal.Laboratorysimulationonacousticwell loggingwithphasedarraytransmitter.ChineseJournalofAcoustics,2003,22(4):33～38
[6] 薛 梅,楚泽涵,边环玲等.远探测声波反射波测井方法研究及声系设计方案.测井技术,2002,26(1):35～39XueM ,ChuZH ,BianHL ,etal.Remoteexplorationacousticre flectionwellloggingdeviceanditssondedesign.WellLoggingTechn ology(inChinese),2002,26(1):35～39
[7] 杜光升,乔文孝,王耀俊.用有限元法计算井中水平裂缝的反射斯通利波.石油大学学报,2000,24(1):95～97DuGS ,QiaoWX ,WangYJ .ComputationofreflectedStoneleywaveathorizontalfractureusingfiniteelementmethod.JournaloftheUniversityofPetroleum(inChinese),2000,24(1):95～97
[8] 杜光升,乔文孝,王耀俊.井孔附近垂直裂缝对纵波的反射.测井技术,2000,24(3):203～206DuGS ,QiaoWX ,WangYJ.Compressionalwavereflectionfromverticalfracturenear borehole.WellLoggingTechnology(inChi nese),2000,24(3):203～206
[9] 栾桂冬,张金铎,王仁乾.压电换能器和换能器阵.北京:北京大学出版社,1990LuanGD ,ZhangJD ,WangRG .PiezoelectricTransducerandAr ray(inChinese).Beijing:PekingUniversityPress,1990
[2] DongW ,ToksozMN .Boreholeseismic sourceradiationpatternintransverselyisotropicmedia.Geophysics,1995,60(1):29～42
[3] DongW ,BouchonM ,ToksozMN .Boreholeseismic sourceradiationinlayeredisotropicandanisotropicmedia:boundaryelementmodel ing.Geophysics,1995,60(3):735～747
[4] 乔文孝,杜光升,陈雪莲.相控线阵声波辐射器在声波测井中应用的可行性分析.地球物理学报,2002,45(5):714～722QiaoWX ,DuGS ,ChenXL .Feasibilityofapplicationoflinearphasedarrayacoustictransmitterstoacousticwell logging.ChineseJ .Geophys.(inChinese),2002,45(5):714～722
[5] QiaoWX ,ChenXL ,DuGS ,etal.Laboratorysimulationonacousticwell loggingwithphasedarraytransmitter.ChineseJournalofAcoustics,2003,22(4):33～38
[6] 薛 梅,楚泽涵,边环玲等.远探测声波反射波测井方法研究及声系设计方案.测井技术,2002,26(1):35～39XueM ,ChuZH ,BianHL ,etal.Remoteexplorationacousticre flectionwellloggingdeviceanditssondedesign.WellLoggingTechn ology(inChinese),2002,26(1):35～39
[7] 杜光升,乔文孝,王耀俊.用有限元法计算井中水平裂缝的反射斯通利波.石油大学学报,2000,24(1):95～97DuGS ,QiaoWX ,WangYJ .ComputationofreflectedStoneleywaveathorizontalfractureusingfiniteelementmethod.JournaloftheUniversityofPetroleum(inChinese),2000,24(1):95～97
[8] 杜光升,乔文孝,王耀俊.井孔附近垂直裂缝对纵波的反射.测井技术,2000,24(3):203～206DuGS ,QiaoWX ,WangYJ.Compressionalwavereflectionfromverticalfracturenear borehole.WellLoggingTechnology(inChi nese),2000,24(3):203～206
[9] 栾桂冬,张金铎,王仁乾.压电换能器和换能器阵.北京:北京大学出版社,1990LuanGD ,ZhangJD ,WangRG .PiezoelectricTransducerandAr ray(inChinese).Beijing:PekingUniversityPress,1990
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心