基于EEI反演的储层油气识别研究
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摘要
埕岛油田是我国极浅海地区第一个投入开发的大油田,其馆陶组上段属河流相砂泥岩沉积,油气富集程度高。该层段分为五套砂组,其中三砂组和四砂组是主要的含油储层。此次研究的目标工区内主要的烃类是重质油,含油储层与含水储层的物性差异较小,通过反演常规的弹性参数无法准确指示油气。基于测井曲线和岩石物理交汇分析,本文构建了敏感的油气指示因子,通过扩展的弹性阻抗反演技术反演该指示因子从而进行油气展布预测。该方法在工区得到了良好的应用效果。
The Chengdao Oil Field is the first shallow sea oil field put into development in China. The upper Guantao formation is fluvial sand and shale deposition and it is enrichment in oil and gas. This formation is divided into five sand, the third and the fourth sand group are the main oil-bearing reservoir. The main hydrocarbon in this research area is heavy oil. Because of the difference of physical properties between oil-reservoir and water-reservoir is small, it is difficult to accurately identify the heavy oil through the traditional inversion. In this paper, a sensitive heavy oil indicator is constructed, and the oil indicator factor is retrieved by extended elastic impedance inversion. This method has good application in this area.
The Chengdao Oil Field is the first shallow sea oil field put into development in China. The upper Guantao formation is fluvial sand and shale deposition and it is enrichment in oil and gas. This formation is divided into five sand, the third and the fourth sand group are the main oil-bearing reservoir. The main hydrocarbon in this research area is heavy oil. Because of the difference of physical properties between oil-reservoir and water-reservoir is small, it is difficult to accurately identify the heavy oil through the traditional inversion. In this paper, a sensitive heavy oil indicator is constructed, and the oil indicator factor is retrieved by extended elastic impedance inversion. This method has good application in this area.
引文
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[2]Whitcombe DN.Elastic impedance normalization[J].Geophysics,2002,67(1):60-62.
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[4]Neves F A,Mustafa H M,Rutty P M.Pseudo-gamma ray volume from extended elastic impedance inversion for gas exploration[J].The Leading Edge,2004,23(6):536-540.
[5]甘利灯,赵邦六,杜文辉,等.弹性阻抗在岩性与流体预测中的潜力分析[J].石油物探,2005,44(5):504-508.Gan LD,Zhao BL,Du WH,et al.The potential analysis of elastic impedance in the lithology and fluid prediction[J].Geophysical Prospecting for Petroleum,2005,44(5):504-508.(in Chinese).
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[11]李健.埕岛油田馆上段层序地层研究[J].西安石油大学学报(自然科学版),2008,23(6):24-28,118.Li J.Study on the sequence stratigraphy of upper Guantao member of Chengdao Oil field[J].Journal of Xi’an Petroleum University(Natural Science Edition),2008,23(6):24-28,118.(in Chinese).
[12]邵水利.垦东北部斜坡带油气成藏主控因素研究[J].内江科技,2010,30(1):106-107.Shao SL.Study on the main factors controlling hydrocarbon accumulation in the Northeast Slope[J].Neijiang Science and Technology,2010,30(1):106-107.(in Chinese).
[13]张玉芬.薄互层地震反射特征研究[M].中国地质大学出版社,2002.Zhang YF.Study on seismic reflection characteristics of thin interbedded layers[M].Publishing House of China University of Geosciences,2002.(in Chinese).
[14]印兴耀,曹丹平,王保丽,等.基于叠前地震反演的流体识别方法研究进展[J].石油地球物理勘探,2014,49(1):22-34.Yin XY,Cao DP,Wang BL,et al.Research progress of fluid discrimination with pre-stack seismic inversion[J].Oil Geophysical Prospecting,2014,49(1):22-34.(in Chinese).
[15]周义军,李喜瑞.敏感角度弹性阻抗在流体预测中的应用[J].石油地球物理勘探,2010,45(5):710-713.Zhou YJ,Li XR.Application of sensitive angle elastic impedance in fluid prediction[J].Oil Geophysical Prospecting,2010,45(5):710-713.(in Chinese).
[16]孙月成,马光克,隋波,等.扩展的弹性阻抗及其在储层预测中的应用[J].天然气工业,2013,33(3):28-32.Sun YC,Ma GK,Sui B,et al.An extended elastic impedance(EEI)method and its application to reservoir mapping[J].Natural Gas Industry,2013,33(3):28-32.(in Chinese).
[2]Whitcombe DN.Elastic impedance normalization[J].Geophysics,2002,67(1):60-62.
[3]Whitcombe DN,Connolly PA,Reagan RL,et al.Extended elastic impedance for fluid and lithology prediction[J].Geophysics,2002,67(1):63-67.
[4]Neves F A,Mustafa H M,Rutty P M.Pseudo-gamma ray volume from extended elastic impedance inversion for gas exploration[J].The Leading Edge,2004,23(6):536-540.
[5]甘利灯,赵邦六,杜文辉,等.弹性阻抗在岩性与流体预测中的潜力分析[J].石油物探,2005,44(5):504-508.Gan LD,Zhao BL,Du WH,et al.The potential analysis of elastic impedance in the lithology and fluid prediction[J].Geophysical Prospecting for Petroleum,2005,44(5):504-508.(in Chinese).
[6]Peng ZM,Li YL,Wu SH,et al.Discriminating gas and water using multi-angle extended elastic impedance inversion in carbonate reservoirs[J].Chinese Journal of Geophysics,2008,51(3):639-644.
[7]牛聪,刘春成,刘志斌,等.扩展弹性阻抗反演在储层预测中的应用[J].石油地球物理勘探,2011,46(1):67-71.Niu C,Liu CC,Liu ZB,et al.Applications of EEI inversion in reservoir prediction[J].Oil Geophysical Prospecting,2011,46(1):67-71.(in Chinese).
[8]肖为,史文英,方中于,等.EEI反演技术在南海A区开发气田中的应用[J].物探化探计算技术,2013,35(5):589-597.Xiao W,Shi WY,Fang ZY,et al.Application of the EEI inversion technology in the gas field exploitation in the area-A of south China sea[J].Computing Techniques for Geophysical and Geochemical Exploration,2013,35(5):589-597.(in Chinese).
[9]谢清惠,邓宏文,郑文波,等.扩展弹性阻抗反演在深海扇含气储层识别中的应用[J].天然气地球科学,2013,24(1):162-168.Xie QH,Deng HW,Zheng WB,et al.Application of EEI inversion technique to submarine gas reservoir[J].Natural Gas Geoscience,2013,24(1):162-168.(in Chinese).
[10]张海娜.渤海湾盆地埕岛油田馆上段沉积相研究[J].石油实验地质,2007,29(1):52-56.Zhang HN.Facies study of the Neogene upper guantao formation in the Chengdao oil field,the Bohai bay basin[J].Petroleum Geology&Experiment,2007,29(1):52-56.(in Chinese).
[11]李健.埕岛油田馆上段层序地层研究[J].西安石油大学学报(自然科学版),2008,23(6):24-28,118.Li J.Study on the sequence stratigraphy of upper Guantao member of Chengdao Oil field[J].Journal of Xi’an Petroleum University(Natural Science Edition),2008,23(6):24-28,118.(in Chinese).
[12]邵水利.垦东北部斜坡带油气成藏主控因素研究[J].内江科技,2010,30(1):106-107.Shao SL.Study on the main factors controlling hydrocarbon accumulation in the Northeast Slope[J].Neijiang Science and Technology,2010,30(1):106-107.(in Chinese).
[13]张玉芬.薄互层地震反射特征研究[M].中国地质大学出版社,2002.Zhang YF.Study on seismic reflection characteristics of thin interbedded layers[M].Publishing House of China University of Geosciences,2002.(in Chinese).
[14]印兴耀,曹丹平,王保丽,等.基于叠前地震反演的流体识别方法研究进展[J].石油地球物理勘探,2014,49(1):22-34.Yin XY,Cao DP,Wang BL,et al.Research progress of fluid discrimination with pre-stack seismic inversion[J].Oil Geophysical Prospecting,2014,49(1):22-34.(in Chinese).
[15]周义军,李喜瑞.敏感角度弹性阻抗在流体预测中的应用[J].石油地球物理勘探,2010,45(5):710-713.Zhou YJ,Li XR.Application of sensitive angle elastic impedance in fluid prediction[J].Oil Geophysical Prospecting,2010,45(5):710-713.(in Chinese).
[16]孙月成,马光克,隋波,等.扩展的弹性阻抗及其在储层预测中的应用[J].天然气工业,2013,33(3):28-32.Sun YC,Ma GK,Sui B,et al.An extended elastic impedance(EEI)method and its application to reservoir mapping[J].Natural Gas Industry,2013,33(3):28-32.(in Chinese).