基于Sinc插值与相关谱的纵横波速度比扫描方法
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摘要
在多分量地震技术中,准确地求取出纵、横波速比(γ)是多分量资料处理、反演、解释各环节中的一个重要步骤。由于地下同一层位具有相同的波阻抗比,因此该层位的反射纵波和反射转换波相互关联,纵横波速比与时间比存在相互转化关系。基于Sinc插值算法与相关系数谱分析的纵横波速比扫描方法是通过设置一系列γ,利用Sinc插值算法将纵波拉伸后与转换波进行互相关,当互相关系数达到最大时即可求出相应的γ。理论数据和实际资料的测试,验证了该方法的有效性、准确性和实用性。
In the multi-component seismic technique, accurate extraction of the P-wave to S-wave velocity ratio(y) is an important step in multi-component data processing, inversion, and interpretation. As the wave impedance ratio for the same underground layer is the same, the reflected P-wave and reflected converted wave are interrelated at this layer. The P-wave to S-wave velocity ratio and time ratio can be mutually converted. In the P-wave to S-wave velocity ratio scanning method based on the sine interpolation algorithm and correlation coefficient spectrum analysis, a series is set, and the sine interpolation algorithm is used to cross-correlate the stretched P-wave with the converted wave. When the cross-correlation coefficient reaches its maximum value, the corresponding ratio can be obtained. The effectiveness, accuracy, and practicality of this method are verified through testing with both theoretical and actual data.
In the multi-component seismic technique, accurate extraction of the P-wave to S-wave velocity ratio(y) is an important step in multi-component data processing, inversion, and interpretation. As the wave impedance ratio for the same underground layer is the same, the reflected P-wave and reflected converted wave are interrelated at this layer. The P-wave to S-wave velocity ratio and time ratio can be mutually converted. In the P-wave to S-wave velocity ratio scanning method based on the sine interpolation algorithm and correlation coefficient spectrum analysis, a series is set, and the sine interpolation algorithm is used to cross-correlate the stretched P-wave with the converted wave. When the cross-correlation coefficient reaches its maximum value, the corresponding ratio can be obtained. The effectiveness, accuracy, and practicality of this method are verified through testing with both theoretical and actual data.
引文
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[12]马昭军,唐建明,吕其彪.三维转换波处理技术在新场地区的应用[J].新疆石油地质,2008, 29(3):376-379.MA Zhaojun, TANG Jianming, LU Qibiao. Application of3D converted wave processing to Xinchang Area[J]. Xinjiang Petroleum Geology, 2008,29(3):376-379.
[13]唐建侯,李亚林,杜文军,等.山地转换波资料处理技术的进展[J].天然气工业,2003,23(3):137-139. doi:10.3321/j.issn:1000-0976.2003.03.045
[14]马昭军,唐建明.基于构造时间控制的P-SV波静校正方法[J].物探化探计算技术,2008, 30(5):373-376.doi:10.3969./j.issn.1001-1749.2008.05.006MA Zhaojun, TANG Jianming. A P-SV wave static correction method based on controlling structure time[J].Computing Techniques for Geophysical and Geochemical Exploration; 2008. 30(5):373-376. doi:10.3969/j.issn.-1001-1749.2008.05.006
[15]吴波,潘树林,陈辉.用四阶累积子函数计算剩余静校正量[J].石油物探,2010, 49(3):227-231. doi:10.3969/j.issn.1000-1441.2010.03.003WU Bo, PAN Shulin, CHEN Hui. Improvement of calculation residual statics by fourth-order cumulant subfunction[J]. Geophysical Prospecting for Petroleum, 2010,49(3):227-231. doi:10.3969/j.issn.1000-1441.2010.03.-003
[16]吴波,尹成,潘树林,等.最大能量法剩余静校正的改进[J].石油地球物理勘探,2010.45(3):350-354. doi:10.13810/j.cnki.issn.1000-7210.2010.03.007WUBo, YIN Cheng,PAN Shulin,et al. The improvements on maximum energy method residual static correction[J].Oil Geophysical Prospecting, 2010, 45(3):350-354. doi:10.13810/j.cnki.issn.1000-7210.2010.03.007
[17]吴波,徐天吉,唐建明,等.三种反射剩余静校正方法对比应用[J].石油物探,2012, 51(2):172-177. doi:10.3969/j.issn.1000-1441.2012.02.010WU Bo, XU Tianji, TANG Jianming, et al. The comparison and application of three reflection residual static correction methods[J]. Geophysical Prospecting for Petroleum, 2012, 51(2):172-177. doi:10.3969/j.issn.1000-1441.2012.02.010
[2] MCCORMACK M D. Detection of subsurface anisotropy:US:4947381[P]. 1990.
[3] SCHANZE T. Sine interpolation of diecrete periodic signal s[J]. IEEE Transactions on Signal Processing, 1995,43(6):1502-1503. doi:10.1109/78.388863
[4]黄绪德,杨文霞.转换波地震勘探[M].北京:石油工业出版社,2008.
[5]黄中玉,孙建库,朱仕军,等.多分量地震技术[M].北京:石油工业出版社,2007.
[6]唐建明,马昭军.宽方位三维三分量地震资料采集观测系统设计——以新场气田三维三分量勘探为例[J].石油物探,2007, 46(3):310-318. doi:10.3969/j.issn.-1000-1441.2007.03.014TANG Jianming, MA Zhaojun. Design of wide-azimuth3D3C seismic data acquisition geometry:Case study of3D3C exploration in Xinchang Gas Field[J]. Geophysical Prospecting for Petroleum, 2007.46(3):310-318. doi:10.-3969/j.issn.1000-1441.2007.03.014
[7]马昭军,唐建明,杨振武.三维转换波处理方法研究与应用[J].天然气工业,2007, 27(S1):213-215.
[8]甘其刚,许多.川西深层致密碎屑岩气藏储层预测方法[J].石油物探,2008, 47(6):593-597. doi:10.3969/-j.issn.1000-1441.2008.06.009GAN Qiang,XU Duo. Prediction of gas reservoir deeply buried tight clastic rock in west Sichuan[J]. Geophysical Prospecting for Petroleum, 2008.47(6):593-597. doi:10.-3969/j.issn.1000-1441.2008.06.009
[9]徐天吉,程冰洁,唐建明.PP波与P-SV波叠前联合反演研究与应用[J].勘探地球物理进展,2008, 31(5):368-372.XU Tianji, CHENG Bingjie,TANG Jianming. Prestaek PP and P-SV wave joint inversion and its application[J]. Progress in Exploration Geophysics, 2008. 31(5):368-372.
[10]洪余刚,李亚林,李忠,等.多分量地震资料层位对比[J].天然气工业,2008.28(9):41-43.doi:10.3787/-j.issn. 1000-0976.2008.09.011HONG Yugang,LI Yalin,LI Zhong,et al. Consistent matching by the multicomponent seismic method[J]. Natural Gas Industry, 2008; 28(9):41-43. doi:10.3787/-j.issn. 1000-0976.2008.09.011
[11]黄东山,谢芳,梁波,等.转换波层位标定对比技术在川中GA构造中的应用[J].天然气工业,2007.27(S1):225-227.
[12]马昭军,唐建明,吕其彪.三维转换波处理技术在新场地区的应用[J].新疆石油地质,2008, 29(3):376-379.MA Zhaojun, TANG Jianming, LU Qibiao. Application of3D converted wave processing to Xinchang Area[J]. Xinjiang Petroleum Geology, 2008,29(3):376-379.
[13]唐建侯,李亚林,杜文军,等.山地转换波资料处理技术的进展[J].天然气工业,2003,23(3):137-139. doi:10.3321/j.issn:1000-0976.2003.03.045
[14]马昭军,唐建明.基于构造时间控制的P-SV波静校正方法[J].物探化探计算技术,2008, 30(5):373-376.doi:10.3969./j.issn.1001-1749.2008.05.006MA Zhaojun, TANG Jianming. A P-SV wave static correction method based on controlling structure time[J].Computing Techniques for Geophysical and Geochemical Exploration; 2008. 30(5):373-376. doi:10.3969/j.issn.-1001-1749.2008.05.006
[15]吴波,潘树林,陈辉.用四阶累积子函数计算剩余静校正量[J].石油物探,2010, 49(3):227-231. doi:10.3969/j.issn.1000-1441.2010.03.003WU Bo, PAN Shulin, CHEN Hui. Improvement of calculation residual statics by fourth-order cumulant subfunction[J]. Geophysical Prospecting for Petroleum, 2010,49(3):227-231. doi:10.3969/j.issn.1000-1441.2010.03.-003
[16]吴波,尹成,潘树林,等.最大能量法剩余静校正的改进[J].石油地球物理勘探,2010.45(3):350-354. doi:10.13810/j.cnki.issn.1000-7210.2010.03.007WUBo, YIN Cheng,PAN Shulin,et al. The improvements on maximum energy method residual static correction[J].Oil Geophysical Prospecting, 2010, 45(3):350-354. doi:10.13810/j.cnki.issn.1000-7210.2010.03.007
[17]吴波,徐天吉,唐建明,等.三种反射剩余静校正方法对比应用[J].石油物探,2012, 51(2):172-177. doi:10.3969/j.issn.1000-1441.2012.02.010WU Bo, XU Tianji, TANG Jianming, et al. The comparison and application of three reflection residual static correction methods[J]. Geophysical Prospecting for Petroleum, 2012, 51(2):172-177. doi:10.3969/j.issn.1000-1441.2012.02.010