苏里格气田S区块有效砂岩储层波阻抗反演
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摘要
苏里格气田S区块储层具有低孔、低渗、非均质性强的特点,储层埋深较大,有效砂岩储层薄。且地表为沙漠、半沙漠环境,煤层发育,地震信号屏蔽现象严重,地震资料分辨率低,有效砂岩储层地震响应特征不明显,地震响应隐含于薄互层复合响应中,由此地震资料获取的波阻抗反演结果无法识别有效砂岩储层。为此,针对该问题,提出了解决方案:应用HFE高分辨率处理技术对地震数据进行重新处理,在保真的基础上改善地震数据分辨率,然后在高分辨率地震数据基础上进行AIW波阻抗反演获取波阻抗数据体识别有效砂岩储层。研究结果表明,应用HFE高分辨率技术及AIW波阻抗反演方法后,原始地震数据的品质得到了较大改善,分辨率得到了较大提高,且AIW波阻抗反演结果与井数据吻合较好,为HFE高分辨率处理技术及AIW波阻抗反演方法在其他油气田的应用提供一定的经验和参考价值。
The reservoir of Sulige gas field has the characteristics of low porosity,low permeability and strong non-uniformity,the reservoir of valid sandstone is greatly deep and thin,and the surface of the gas field is covered by desert and semi-desert,developing coal seam produces serious screen phenomenon,which reduced a low resolution of the seismic data and unclear feature of the seismic response to valid sandstone,causing the seismic response of valid sandstone to be embedded in the composite response of thin interbedded.Therefore,valid sandstone has not been identified by the results of acoustic impedance inversion,which increases the difficulty of reservoir identifying of the valid sandstone.In order to solve the problem,the solution was proposed,which was adopting a high frequency expanding technique to re-process seismic data of the region,acquiring seismic data of high resolution,and would execute the acoustic impedance inversion based on wavelet edge analysis and modeling after the high frequency expanding.The result indicates that after the processed of high frequency expanding,the vertical resolution of the seismic data has been improved on the basis of fidelity,and the results of the acoustic impedance inversion based on wavelet edge analysis and modeling were authentic by comparing with the data of the well,which provides guidance for the application to the other oil and gas fields.
The reservoir of Sulige gas field has the characteristics of low porosity,low permeability and strong non-uniformity,the reservoir of valid sandstone is greatly deep and thin,and the surface of the gas field is covered by desert and semi-desert,developing coal seam produces serious screen phenomenon,which reduced a low resolution of the seismic data and unclear feature of the seismic response to valid sandstone,causing the seismic response of valid sandstone to be embedded in the composite response of thin interbedded.Therefore,valid sandstone has not been identified by the results of acoustic impedance inversion,which increases the difficulty of reservoir identifying of the valid sandstone.In order to solve the problem,the solution was proposed,which was adopting a high frequency expanding technique to re-process seismic data of the region,acquiring seismic data of high resolution,and would execute the acoustic impedance inversion based on wavelet edge analysis and modeling after the high frequency expanding.The result indicates that after the processed of high frequency expanding,the vertical resolution of the seismic data has been improved on the basis of fidelity,and the results of the acoustic impedance inversion based on wavelet edge analysis and modeling were authentic by comparing with the data of the well,which provides guidance for the application to the other oil and gas fields.
引文
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[14]张永刚.地震波阻抗反演技术的现状和发展[J].石油物探,2002,41(4):385～390.
[15]王延光.储层地震反演方法以及应用中的关键问题与对策[J].石油物探,2002,41(3):299～303.
[16]杨小萍,董春荣.地震反演技术在储层建模中的作用[J].西安石油学院学报(自然科学版),2000,15(6):9～12.
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[21]周绪文.反射波地震勘探方法[M].北京:石油工业出版社,1989.
[22]Lines L R.Inversion of geophysical data[M].Tulsa:Geophysics reprint series,(3rd ed.)Society of Explo-ration Geophysicist,1992.
[23]祁少云.地震反演论文集[M].北京:石油工业出版社,1992.
[24]崔永福,彭更新,李国会,等.基于小波边缘分析建模的波阻抗反演技术(为庆祝塔里木油田石油会战20周年而作)[J].新疆石油地质,2009,30(2):261～263.
[25]许崇宝,刘东源.小波边缘分析建模波阻抗反演方法在煤层解释中的应用[J].中国煤炭地质,2008,20(2):43～45.
[26]王振国,陈小宏,王克斌,等.多参数优化的模拟退火法波阻抗反演[J].石油物探,2007,46(2):120～125.
[2]文华国,郑荣才,高红灿,等.苏里格气田苏6井区下石盒子组盒8段沉积相特征[J].沉积学报,2007,25(1):90～98.
[3]冉新权,李安琪.苏里格气田开发论[M].北京:石油工业出版社,2008.1～27.
[4]何东博,贾爱林,田昌炳.苏里格气田储集层成岩作用及有效储集层成因[J].石油勘探与开发,2004,31(3):69～71.
[5]王卫华.提高地震剖面信噪比和分辨率的一种新途径[J].石油地球物理勘探,1997,32(4):246～256.
[6]Wyllie M R J,Gregory A R.Formation factors ofunconsolidated porous media:influence of particleshape and effect of cementation[J].Trans.AIME,1953,198(1):103～110.
[7]马朋善,王继强,刘来祥,等.Morlet小波分频处理在提高地震资料分辨率中的应用[J].石油物探,2007,46(3):283～287.
[8]惠长松.分频处理技术在储集体识别中的应用[J].石油地质与工程,2009,23(4):41～48.
[9]刘文霞.分频处理技术在辽河深层地震资料处理中的应用[J].石油物探,2001,40(2):116～120.
[10]杨贵祥.基于协调频率与分频处理的高分辨率反演技术[J].石油物探,2005,45(3):242～244.
[11]袁红军,吴时国,王箭波.拓频处理技术在大牛地气田勘探开发中的应用[J].石油地球物理勘探,2008,43(1):69～75.
[12]俞寿朋,查中圻,粱杰.频率加强滤波[J].石油地球物理勘探,1984,19(3):200～209.
[13]吕铁良,王永刚,谢万学,等.稀疏脉冲反演技术在井间地震反演中的应用[J].石油物探,2007,46(1):58～63.
[14]张永刚.地震波阻抗反演技术的现状和发展[J].石油物探,2002,41(4):385～390.
[15]王延光.储层地震反演方法以及应用中的关键问题与对策[J].石油物探,2002,41(3):299～303.
[16]杨小萍,董春荣.地震反演技术在储层建模中的作用[J].西安石油学院学报(自然科学版),2000,15(6):9～12.
[17]Subhashls M,Xuri H,Jeffrey L,et al.Hybrid seis-mic inversion:A reconnaissance tool for deepwaterexploration[J].The Leading Edge,2000,19(11):1230～1237.
[18]罗省贤,何振华.声阻抗偏微分方程约束反演方法[J].石油地球物理勘探,1995,30(4):473～479.
[19]唐权钧,姜宇东,赵德斌,等.用特征线法进行一维波动方程反演的直接算法[J].石油物探,1999,38(1):44～55.
[20]Weglein A B.Obtaining three-dimensional velocityinformation directly from refraction seismic data:U-niverse scattering formalism[J].Geophysics,1981,46(1):1116～1120.
[21]周绪文.反射波地震勘探方法[M].北京:石油工业出版社,1989.
[22]Lines L R.Inversion of geophysical data[M].Tulsa:Geophysics reprint series,(3rd ed.)Society of Explo-ration Geophysicist,1992.
[23]祁少云.地震反演论文集[M].北京:石油工业出版社,1992.
[24]崔永福,彭更新,李国会,等.基于小波边缘分析建模的波阻抗反演技术(为庆祝塔里木油田石油会战20周年而作)[J].新疆石油地质,2009,30(2):261～263.
[25]许崇宝,刘东源.小波边缘分析建模波阻抗反演方法在煤层解释中的应用[J].中国煤炭地质,2008,20(2):43～45.
[26]王振国,陈小宏,王克斌,等.多参数优化的模拟退火法波阻抗反演[J].石油物探,2007,46(2):120～125.
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