高密度各向异性速度分析技术及应用
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摘要
常规的NMO技术是在假设地层各向同性的前提下提出来的,而真实的地层却是各向异性的,如果用常规的NMO技术进行地震数据的处理势必会影响数据的成像质量。近些年来随着海上地震采集技术的不断发展,电缆长度不断增加,使得地层各向异性的影响更加突出。本文对不同海域大偏移距地震数据进行了高密度各向异性速度分析技术的应用,从对比该技术与常规NMO技术得出的道集和叠加剖面上看,该技术获得了更好的效果,从而论证了高密度各向异性速度分析技术能够较好地解决地层各向异性带来的问题。
The conventional NMO technology is proposed under the premise of hypothesizing that the formation is isotropic,but the real formation is anisotropic.The conventional NMO technology for the processing of seismic data is bound to affect the image quality of the data.In recent years,with the increasing development of the marine seismic acquisition technology,the length of the cable is increasing,which makes the effects of the anisotropic formation more obvious.This paper applies high density of anisotropic velocity analysis technology to large offset seismic data of different sea areas.From comparing the gathers and overlay profile produced by this technique and conventional NMO technology,the technology achieves better results,which demonstrates that the high density of anisotropic velocity analysis technology can solve the problems brought by the anisotropic formation better.
The conventional NMO technology is proposed under the premise of hypothesizing that the formation is isotropic,but the real formation is anisotropic.The conventional NMO technology for the processing of seismic data is bound to affect the image quality of the data.In recent years,with the increasing development of the marine seismic acquisition technology,the length of the cable is increasing,which makes the effects of the anisotropic formation more obvious.This paper applies high density of anisotropic velocity analysis technology to large offset seismic data of different sea areas.From comparing the gathers and overlay profile produced by this technique and conventional NMO technology,the technology achieves better results,which demonstrates that the high density of anisotropic velocity analysis technology can solve the problems brought by the anisotropic formation better.
引文
[1]马建波,李绍康,银燕惠,等.东淮凹陷高密度各向异性自动速度分析[J].中国石油勘探,2009(6):69～71.
[2]万志超,膝吉文,张秉明.各向异性介质中地震波速度分析的研究现状[J].地球物理学进展,1997,12(3):35～41.
[3]刘茂诚.一个各向异性速度分析应用实例[J].石油地球物理勘探,2010,45(4):525～529.
[4]徐亦鸣,黄中玉,刘路佳.各向异性介质纵波速度分析[J].石油物探,2004,43(5):438～440.
[5]杨红霞.用转换S波进行各向异性速度分析[J].石油物探译丛,2000(6):45～52.
[6]于春玲,王建民,付雷,等.转换波各向异性速度分析与偏移成像[J].石油地球物理勘探,2010,45(增刊1):45～47.
[7]铁迎春,罗玲,朱新宇,等.各向异性双谱速度分析方法及在泌阳地区的应用[J].石油地质与工程,2011,25(1):41～43.
[8]王德利,何樵登,韩立国.裂隙各向异性介质中的NMO速度[J].地球物理学进展,2007,22(6):1698～1705.
[9]Siliqi R.Technological Leap in Time Processing Focusesthe Data Throughout Anisotropic Media[J].First Break,2001,19(11):612～618.
[2]万志超,膝吉文,张秉明.各向异性介质中地震波速度分析的研究现状[J].地球物理学进展,1997,12(3):35～41.
[3]刘茂诚.一个各向异性速度分析应用实例[J].石油地球物理勘探,2010,45(4):525～529.
[4]徐亦鸣,黄中玉,刘路佳.各向异性介质纵波速度分析[J].石油物探,2004,43(5):438～440.
[5]杨红霞.用转换S波进行各向异性速度分析[J].石油物探译丛,2000(6):45～52.
[6]于春玲,王建民,付雷,等.转换波各向异性速度分析与偏移成像[J].石油地球物理勘探,2010,45(增刊1):45～47.
[7]铁迎春,罗玲,朱新宇,等.各向异性双谱速度分析方法及在泌阳地区的应用[J].石油地质与工程,2011,25(1):41～43.
[8]王德利,何樵登,韩立国.裂隙各向异性介质中的NMO速度[J].地球物理学进展,2007,22(6):1698～1705.
[9]Siliqi R.Technological Leap in Time Processing Focusesthe Data Throughout Anisotropic Media[J].First Break,2001,19(11):612～618.
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