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基于整形正则化和s变换的q值估计方法

Keywords: 地震波衰减,s变换,q值估计,整形正则化

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Abstract:

?品质因子q值是地震勘探的重要物理参数,可用于提高地震资料处理质量和油气藏描述精度。本文提出了一种新的基于整形正则化反演和s变换的q值估计方法。首先通过s变换得到不同旅行时刻的振幅谱,然后引入整形正则化算子稳定求解不同时刻的频谱比值,最后通过线性拟合估计出地震品质因子。该方法通过正则化技术消除了噪声、反射相干以及变换窗口等引起的算法不稳定问题,得到光滑稳定的频谱比值,有利于最终的线性回归求取q值。与传统的频谱比值法相比,基于整形正则化技术的方法估计的q值更为准确。模拟算例和实际地震资料处理结果均表明,该方法可以有效稳定地估计地震资料品质因子。

References

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[3]  李景叶,陈小宏.基于地震资料的储层流体识别.石油学报,2008,29(2):235-238lijing-ye,chenxiao-hong.reservoirfluididentiti-cationbasedonseismicdata.actapetroleisinica,2008,29(2):235-238
[4]  wangyh.astableandefficientapproachoftnverseqfiltering[j].geophysics.2002,67(2):657-663
[5]  tonnr.thedeterminationoftheseismicqualityfactorqfromvspdata:八comparisonofditferentcomputationalmethods[j].geophysicalprospecting.1991,39(1):1-27
[6]  高静怀,杨森林.利用零偏移vsp资料估计介质品质因子方法研究[j].地球物理学报.2007,50(4):1198-1209
[7]  李合群,孟小宏,赵波等.塔里木沙漠区地震数据品质与沙层q吸收[j].石油地球物理勘探.2010,45(1):28-??浏览
[8]  张固澜,熊晓军,容娇君等.基于改进的广义s变换的地层吸收衰减补偿[j].石油地球物理勘探.2010,45(4):512-515??浏览
[9]  wangyh.quantifyingtheeffectivenessofstabilizedinverseqliltering[j].geophysics.2003,68(1):337-345
[10]  yangs,gaoj,chenw,wangd,wengb.comparisonsoffourmethodsusedforseismicqualityfactorsestimation.segtechnicalprogramexpandedabstracss,2009,28:2472-2476
[11]  stockwellrg,mansinhal,lowedp.localizationofthecomplexspectrum:thestransform[j].ieeetransactionsonsignalprocessing.1996,44(4):998-1001
[12]  reinec,vanderbaanm,rogerc.therobustnessofseismicattenuationmeasurementsusing£ixedandvariable-windowtime-frequencytransforms.geophysics,2009,74(2):wa123-wa135
[13]  fomels.adaptivemultiplesubtractionusingregularizednonstationaryregression.geophysics,2009,74(1):v25-v33
[14]  tikhonovan.solutionofincorrectlyformulatedproblemsandtheregularizationmethod.sovidmathematicaldoklady,1963,4,1035-1038
[15]  hedlink,mewhortl,margraveg.delineationofsteamfloodusingseismicattenuation.segtechnicalprogramexpandedabstracss,2001,20:1572-1575
[16]  宫同举,孙成禹,彭洪超等.几种提取品质因子方法的对比分析.勘探地球物理进展,2009,32(4):252-256gongtong-ju,suncheng-yu,penghong-chaoetal.comparisonofseveralcomputationalmethodsofqualityfactor.progressinexplorationgeophysics,2009,32⑷:252-256
[17]  fomels.shapingregularizationingeophysicalestimationproblems.geophysics,2007,72(2):r29-r36
[18]  fomels.localseismicattributes.geophysics,2007,72(3):a29-a33
[19]  liug,fomels,chenx.time-frequencycharacterizationofseismicdatausinglocalattributes.segtechnicalprogramexpandedabstracts,2009,28:1825-1829
[20]  gabord.theoryofcommunication.journaloftheinstituteofelectricalengineering,1946,93(26):429-457
[21]  王典,刘财,刘洋,刘国昌.基于提升算法和百分位数软阈值的小波去噪技术.地球物理学进展,2008,23(4):1124-1130wangdian,liucai,liuyang,liuguo-chang.applicationofwavelettransformbasedonliftingschemeandpercentilessoft-thresholdtoeliminationofseismicrandomnoise.progressingeophysics,2008,23(4):1124-1130
[22]  pinnegarc,mansinhal.thes-transformwithwindowsofarbitraryandvaryingshape[j].geophysics.2003,68(1):381-385
[23]  parolais.denoisingofseismogramsusingthestransform[j].bulletinoftheseismologicalsocietyofamerica.2009,99(1):226-234
[24]  fomels.nonlinearshapingregularizationingeophysicalinverseproblems.segtechnicalprogramexpandedabstracss,2008,27:2046-2050

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