改进纵波与转换波时间匹配方法研究
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摘要
针对多波地震资料纵、横波匹配方法产生的转换波地震子波的畸变问题,本文提出了一种改进纵波与转换波资料时间匹配的方法。该方法依据傅里叶展式的时标变换定理,对时间匹配后的转换波资料的地震子波进行振幅和相位同时匹配,解决纵波与转换波时间匹配域转换中的转换波地震子波波形畸变问题。文中对实际测井资料合成地震记录进行了研究,结果表明该方法能够对转换波资料进行振幅和相位的同时匹配。含噪声合成数据实验研究结果表明,本文方法也能够改进转换波的时间匹配结果。
As the velocity ratio is changing with time,the time matching from P-SV to PP time domain will distort seismic wavelet which includes waveform stretch and phase delay.To solve this problem,we propose an improved method for P-P and P-SV wave time matching.This method,based on Fourier's time stretch theory,can correct simultaneously wavelet amplitude and phase resulted from the different stretch value with the seismic travel time.The modeling data results of a well log data indicate that the method can correct simultaneously wavelet amplitude and phase.And the method is still stable when the data is noised.
As the velocity ratio is changing with time,the time matching from P-SV to PP time domain will distort seismic wavelet which includes waveform stretch and phase delay.To solve this problem,we propose an improved method for P-P and P-SV wave time matching.This method,based on Fourier's time stretch theory,can correct simultaneously wavelet amplitude and phase resulted from the different stretch value with the seismic travel time.The modeling data results of a well log data indicate that the method can correct simultaneously wavelet amplitude and phase.And the method is still stable when the data is noised.
引文
[1]Li X and Zhang Y.Seismic reservoir characterization:how can multicomponent data help?Journal of Geo-physics and Engineering,2009,8(2):123～141
[2]赵邦六.多分量地震勘探技术理论与实践.北京:石油工业出版社,2007
[3]陈双全,王尚旭,李向阳等.P-SV与P-P波时间匹配应用研究.石油地球物理勘探,2010,45(4):497～501Chen Shuangquan,Wang Shangxu,Li Xiangyang etal.Time matching between P-SV wave and P-Pwave.OGP,2010,45(4):497～501
[4]毛树林.纵横波叠后联合反演油气预测方法研究及应用[硕士学位论文].四川成都:成都理工大学矿产普查与勘探专业,2010
[5]Fomel S and Backus M M.Multicomponent seismicdata registration by least squares.SEG TechnicalProgram Expanded Abstracts,2003,22:781～784
[6]Zhang F and Wang Y.Amplitude-preserving calibra-tion of PP-and PS-wave reflection events,71st EA-GE Conference and Exhibition,2009,P087
[7]Bansal R et al.Correction for NMO stretch and dif-ferential attenuation in converted-wave data:A keyenabling technology for pre-stack joint inversion ofPP and PS data.The Leading Edge,2009,28(10):1182～1190
[8]Deffenbaugh M A.Resolution of converted waves inattenuating media.SEG Technical Program Ex-panded Abstracts,2000,19:1178～1180
[9]Bansal R and Matheney M.Wavelet distortion correc-tion due to domain conversion.Geophysics,2010,75(6):V77～V87
[10]陆基孟.地震勘探原理(上).山东东营:石油大学出版社,2005
[11]Robinson E A and Treitel S.Geophysical Signal A-nalysis.Prentice-Hall Inc,1980
[12]Aki K and Richards P G.Quantitative Seismology.University Science Books,2002
[2]赵邦六.多分量地震勘探技术理论与实践.北京:石油工业出版社,2007
[3]陈双全,王尚旭,李向阳等.P-SV与P-P波时间匹配应用研究.石油地球物理勘探,2010,45(4):497～501Chen Shuangquan,Wang Shangxu,Li Xiangyang etal.Time matching between P-SV wave and P-Pwave.OGP,2010,45(4):497～501
[4]毛树林.纵横波叠后联合反演油气预测方法研究及应用[硕士学位论文].四川成都:成都理工大学矿产普查与勘探专业,2010
[5]Fomel S and Backus M M.Multicomponent seismicdata registration by least squares.SEG TechnicalProgram Expanded Abstracts,2003,22:781～784
[6]Zhang F and Wang Y.Amplitude-preserving calibra-tion of PP-and PS-wave reflection events,71st EA-GE Conference and Exhibition,2009,P087
[7]Bansal R et al.Correction for NMO stretch and dif-ferential attenuation in converted-wave data:A keyenabling technology for pre-stack joint inversion ofPP and PS data.The Leading Edge,2009,28(10):1182～1190
[8]Deffenbaugh M A.Resolution of converted waves inattenuating media.SEG Technical Program Ex-panded Abstracts,2000,19:1178～1180
[9]Bansal R and Matheney M.Wavelet distortion correc-tion due to domain conversion.Geophysics,2010,75(6):V77～V87
[10]陆基孟.地震勘探原理(上).山东东营:石油大学出版社,2005
[11]Robinson E A and Treitel S.Geophysical Signal A-nalysis.Prentice-Hall Inc,1980
[12]Aki K and Richards P G.Quantitative Seismology.University Science Books,2002
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