属性组合法反演Q值的精度及其影响因素分析
摘要
品质因子Q是地下介质的重要岩性参量,是反映地层对地震波的吸收程度的重要参数。频率域属性组合法是新提出的一种地层Q值提取方法,有较严格的理论推导。采用理论模型数据验证了属性组合法(一阶式和二阶式)提取地层Q值的可靠性。通过测试不同衰减模型、震源子波及频带宽度,对比了谱比法、质心法和属性组合法反演Q值的精度,分析了可能的影响因素。对海上地震资料用二阶式提取的Q值分布进行反Q滤波处理,取得较好的实际应用效果。
引文
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[3]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[J].勘探地球物理进展,2009,32(4):252-256Gong T J,Sun C Y,Peng H C,et al.Comparison ofseveral computational methods of quality factor[J].Pro-gress in Exploration Geophysics,2009,32(4):252-256
[4]Tonn R.The determination of the seismic qualityfactor Q from VSP data:a comparison of differentcomputational methods[J].Geophysics Prospecting,1991,39(1):1-27
[5]刘国昌,陈小宏,杜婧,等.基于整形正则化和S变换的Q值估计方法[J].石油地球物理勘探,2011,46(3):417-422Liu G C,Chen X H,Du J,et al.Seismic Q estimationusing S-transform with regularized inversion[J].OilGeophysical Prospecting,2011,46(3):417-422
[6]Zhang C J,Ulrychz T J.Estimation of quality factorsfrom CMP record[J].Geophysics,2002,67(5):1542-1547
[7]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):1198-1209Gao J H,Yang S L.On the method of quality factorsestimation from zero-offset VSP data[J].ChineseJournal of Geophysics,2007,50(4):1198-1209
[8]曹思远,赵宁,袁殿,等.地震波品质因子研究新方法[C]//中国地球物理年会论文集.合肥:中国科学技术大学出版社,2012:454Cao S Y,Zhao N,Yuan D,et al.A new method to in-verse Q[C]//The Chinese Geophysics.Hefei:Pressof University of Science and Technology of China,2012:454
[9]聂冀强.零偏VSP资料的Q值反演方法及应用[D].北京:中国地质大学,2011Nie J Q.Approaches and application of inversion Qvalue inversion in zero-offset VSP data[D].Beijing:China University of Geosciences,2011
[10]武银婷,刘伊克,常旭.零偏VSP反演Q值CFS方法及影响因素研究[J].地球物理学进展,2010,25(6):1897-1904Wu Y T,Liu Y K,Chang X.Study on CFS methodin Q inversion using zero-offset VSP data[J].Pro-gress in Geophysics,2010,25(6):1897-1904
[11]刘兰峰,曹思远,王鲁.四参数宽带B样条子波[J].石油地球物理勘探,2011,46(2):247-251Liu L F,Cao S Y,Wang L.Wide-band B-splinewavelet with four parameters[J].Oil GeophysicsProspecting,2011,46(2):247-251
[12]袁殿.理论宽带B子波及谱定量表征[D].北京:中国石油大学(北京),2012Yuan D.Wide band B-wavelet and its spectrumquantify characterization[D].Beijing:China Univer-sity of Pertroleum(Beijing),2012
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