三维地质建模与地震反演结合预测含油单砂体
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摘要
含油单砂体形态及分布特征的预测是精细油藏描述的主要内容。根据渤海湾盆地G油田地质特征、地震资料品质及研究目的,选择稀疏脉冲地震反演方法,以泥质含量为地震反演目标,将地震反演技术与三维地质建模技术相结合,利用协克里金方法将测井解释结果与地震反演参数有机地融合到一起,建立高精度的三维泥质含量模型。三维地质模型所反映出的单砂体形态完全达到了油藏精细描述的要求,同时又很好地保持了原始地震属性参数的分布特征,使砂体预测的分辨率得到明显提高。在泥质含量模型的基础上划分砂体,利用三维可视化技术对含油单砂体进行三维追踪和解释,得到含油单砂体及油藏的三维空间展布形态和分布特征,使油藏预测更为准确、可靠。
The prediction of geometry and distribution for oil-bearing single sandbody is an important subject in fine reservoir characterization.According to the geologic feature,quality of seismic data and the study purposes of G Oilfield in Bohai Bay Basin,seismic inversion of shale volume was processed using sparse spike method,the processing result of seismic inversion was integrated into the 3D geologic modeling through combining it with the petrophysical study by Co-kriging,and a 3D geologic model of shale volume with high resolution was established and met the requirement of fine reservoir characterization.The sand bodies were extracted based on the 3D shale volume model and the oil-bearing single sandbodies were tracked and interpreted by 3D visualization technology,and the 3D geometry and distribution of oil-bearing sand bodies and netpay zone were clearly obtained.It leads to the reservoir prediction with higher accuracy and reliability.
The prediction of geometry and distribution for oil-bearing single sandbody is an important subject in fine reservoir characterization.According to the geologic feature,quality of seismic data and the study purposes of G Oilfield in Bohai Bay Basin,seismic inversion of shale volume was processed using sparse spike method,the processing result of seismic inversion was integrated into the 3D geologic modeling through combining it with the petrophysical study by Co-kriging,and a 3D geologic model of shale volume with high resolution was established and met the requirement of fine reservoir characterization.The sand bodies were extracted based on the 3D shale volume model and the oil-bearing single sandbodies were tracked and interpreted by 3D visualization technology,and the 3D geometry and distribution of oil-bearing sand bodies and netpay zone were clearly obtained.It leads to the reservoir prediction with higher accuracy and reliability.
引文
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[13]张淑娟,邵龙义,宋杰,等.相控建模技术在阿南油田阿11断块中的应用[J].石油勘探与开发,2008,35(3):355-361.Zhang Shujuan,Shao Longyi,Song Jie,et al.Application offacies-controlled modeling technology to the fault-block A11 in A’nan Oilfield[J].Petroleum Exploration and Development,2008,35(3):355-361.
[2]赵文智,邹才能,谷志东,等.砂岩透镜体油气成藏机理初探[J].石油勘探与开发,2007,34(3):273-284.Zhao Wenzhi,Zou Caineng,Gu Zhidong,et al.Preliminarydiscussion on accumulation mechanism of sand lens reservoirs[J].Petroleum Exploration and Development,2007,34(3):273-284.
[3]贾爱林,郭建林,何东博.精细油藏描述技术与发展方向[J].石油勘探与开发,2007,34(6):691-695.Jia Ailin,Guo Jianlin,He Dongbo.Perspective of development indetailed reservoir description[J].Petroleum Exploration andDevelopment,2007,34(6):691-695.
[4]吴胜和,金振奎,黄沧钿,等.储层建模[M].北京:石油工业出版社,1999.Wu Shenghe,Jin Zhenkui,Huang Cangtian,et al.Reservoirmodeling[M].Beijing:Petroleum Industry Press,1999.
[5]张一伟,熊琦华,纪发华,等.地质统计学在油藏描述中的应用[M].北京:石油大学出版社,1992.Zhang Yiwei,Xiong Qihua,Ji Fahua,et al.The application ofgeo-statistics in reservoir characterization[M].Beijing:ChinaUniversity of Petroleum Press,1992.
[6]胡向阳,熊琦华,吴胜和.储层建模方法研究进展[J].石油大学学报,2001,25(1):107-112.Hu Xiangyang,Xiong Qihua,Wu Shenghe.Advancement ofreservoir modeling methods[J].Journal of China University ofPetroleum,2001,25(1):107-112.
[7]张淑品,陈福利,金勇.塔河油田奥陶系缝洞型碳酸盐岩储集层三维地质建模[J].石油勘探与开发,2007,34(2):175-180.Zhang Shupin,Chen Fuli,Jin Yong.3D modeling of Ordovicianfractured-vug carbonate reservoir,Tahe Oilfield[J].PetroleumExploration and Development,2007,34(2):175-180.
[8]陈烨菲,蔡冬梅,范子菲,等.哈萨克斯坦盐下油藏双重介质三维地质建模[J].石油勘探与开发,2008,35(4):492-497,508.Chen Yefei,Cai Dongmei,Fan Zifei,et al.3D geologicalmodeling of dual porosity carbonate reservoirs:A case fromKenkiyak pre-salt oilfield,Kazakhstan[J].PetroleumExploration and Development,2008,35(4):492-497,508.
[9]谭学群,方赟,吴卞生,等.地震资料约束的地质统计模型[J].特种油气藏,2003,10(2):41-42,46.Tan Xuequn,Fang Yun,Wu Biansheng,et al.Geo-statisticmodel under the constraints of seismic data[J].Special Oil&GasReservoir,2003,10(2):41-42,46.
[10]年静波,汤磊,刘喜武.地质统计分析在地震资料砂泥岩分布预测中的应用[J].石油物探,2004,43(3):278-282.Nian Jingbo,Tang Lei,Liu Xiwu.Application of geo-statisticsanalysis in the sandstone and mudstone distribution predictionwith seismic data[J].Geophysical Prospecting for Petroleum,2004,43(3):278-282.
[11]李方明,计智锋,赵国良,等.地质统计反演之随机地震反演方法———以苏丹M盆地P油田为例[J].石油勘探与开发,2007,34(4):451-455.Li Fangming,Ji Zhifeng,Zhao Guoliang,et al.Methodology andapplication of stochastic seismic inversion:A case from P Oilfield,M Basin,Sudan[J].Petroleum Exploration and Development,2007,34(4):451-455.
[12]任殿星,李凡华,李保柱.多条件约束油藏地质建模技术[J].石油勘探与开发,2008,35(2):205-214.Ren Dianxing,Li Fanhua,Li Baozhu.Geomodeling technologyunder multifactor control[J].Petroleum Exploration andDevelopment,2008,35(2):205-214.
[13]张淑娟,邵龙义,宋杰,等.相控建模技术在阿南油田阿11断块中的应用[J].石油勘探与开发,2008,35(3):355-361.Zhang Shujuan,Shao Longyi,Song Jie,et al.Application offacies-controlled modeling technology to the fault-block A11 in A’nan Oilfield[J].Petroleum Exploration and Development,2008,35(3):355-361.
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