地震波吸收衰减技术在缝洞型碳酸盐岩储层预测中的应用
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摘要
本文借助于非正交小波变换优良的时间域与频率域局部化特性,将基于非正交Gabor-Morlet小波变换的时频分析方法引入到地震波吸收衰减分析技术中,并论述了当地震波通过石油、天然气聚集带时,地震波的高频成分会被吸收,从而导致高频能量的急剧衰减。文中应用这一理论特性,对TZ45井区缝洞型碳酸盐岩储层进行了预测,预测结果跟实际钻井资料非常吻合,取得了良好的预测效果,证明了地震波吸收衰减技术是预测缝洞型碳酸盐岩储层的一种有效手段。
Based on excellent localization property in time domain and frequency domain for non-orthogonal wavelet transform, time-frequency analysis method of the non-orthogonal Gabor-Morlet transform was brought to seismic wave Absorption and attenuation analysis, it is stated in this paper that when seismic wave propagates through oil & gas reservoirs, the high frequency component will be Absorbed, thus the high frequency energy will rapidly attenuate. By applying the theoretical characteristics the prediction was conducted for the fracture-vug carbonate reservoir in TZ45 well zone, the related results show that the prediction is successful and excellent, matching the drilling results. In this paper it is demonstrated that seismic wave Absorption and attenuation technology is an effective mean to predict the fracture-vug carbonate reservoir.
Based on excellent localization property in time domain and frequency domain for non-orthogonal wavelet transform, time-frequency analysis method of the non-orthogonal Gabor-Morlet transform was brought to seismic wave Absorption and attenuation analysis, it is stated in this paper that when seismic wave propagates through oil & gas reservoirs, the high frequency component will be Absorbed, thus the high frequency energy will rapidly attenuate. By applying the theoretical characteristics the prediction was conducted for the fracture-vug carbonate reservoir in TZ45 well zone, the related results show that the prediction is successful and excellent, matching the drilling results. In this paper it is demonstrated that seismic wave Absorption and attenuation technology is an effective mean to predict the fracture-vug carbonate reservoir.
引文
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[12]苑书金.非正交小波变换的频谱分解技术在大牛地气田储层预测中的应用.天然气工业,2007,27(12):52~54
[13]孙夕平.非正交小波谱分解技术的研究和应用.中国石油勘探,2006,11(4):74~79
[14]毕研斌,龙胜祥,郭彤楼等.应用频率衰减属性预测TNB地区储层含气性.石油与天然气地质,2007,28(1):116~120
[2]边树涛,董艳蕾,郑浚茂.地震波频谱衰减检测天然气技术应用研究.石油地球物理勘探,2007,42(3):296~300
[3]李明娟,张永贵,邬兴威等.塔河南部地区碳酸盐岩油气预测技术研究.石油与天然气地质,2006,27(4):536~541
[4]尹陈,贺振华,黄德济.基于波动方程的地震波衰减理论研究及应用.成都理工大学学报(自然科学版),2008,35(3):263~267
[5]董宁,杨立强.基于小波变换的吸收衰减技术在塔河油田储层预测中的应用研究,地球物理学进展,2008,23(2):533~538
[6]Sinha S,Routh P S.Spectral decomposition of seismicdata with continuous-wavelet transform.Geophys-ics,2005,70(6):19~25
[7]Sams M S,Neep J P,Worthington M H et al.Themeasurement of velocity dispersion and frequency-dependent intrinsic attenuation in sedi mentary rocks.Geophysics,1997,62(5):1456~1464
[8]Dilay A,Eastwood J.Spectral analysis applied to seis-mic monitoring of thermal recovery.The LeadingEdge,1995,14(11):1117~1122
[9]夏竹,刘兰锋,任敦占等.基于地震道时频分析的地层结构解析原理和方法.石油地球物理勘探,2007,42(1):57~69
[10]Taner MT,Treitel S.Arobust method for Qesti ma-tion.Expanded Abstracts of73rd Ann SEG Mtg,2003,1105~1109
[11]Dasgupt A R,Clark R A.Esti mation of Qfromsur-face seismic reflection data.Geophysics,1998,63(6):2120~2128
[12]苑书金.非正交小波变换的频谱分解技术在大牛地气田储层预测中的应用.天然气工业,2007,27(12):52~54
[13]孙夕平.非正交小波谱分解技术的研究和应用.中国石油勘探,2006,11(4):74~79
[14]毕研斌,龙胜祥,郭彤楼等.应用频率衰减属性预测TNB地区储层含气性.石油与天然气地质,2007,28(1):116~120
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