综合多信息进行地震约束储层随机建模——以准噶尔盆地庄1井区J_1s_2~2砂组为例
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摘要
针对地震约束储层随机建模中地震反演波阻抗数据体与岩相概率关系差的问题,提出综合多信息、逐级约束、多级建模的思路方法。首先以地震反演数据体约束建立地球物理特征曲线随机参数场,再以每一个地球物理特征曲线参数场为约束建立相模型,最后以优选的相模型和地球物理特征曲线参数场为约束进行储层参数建模。该方法在井距较大的开发前期评价阶段具有较好的应用效果。
As a case study of ZH1 block in Zhunggar basin,a new method of multistep constraint stochastic modeling was presented,which integrates together geology,well logging and seismic data.The multistep modeling method can properly solve the problem that simulation target value and restriction value have no perfect relations,for example,facies and impedance.The method of multistep modeling has three steps. Firstly,the random field of typical geophysics curve,constrained by impedance data,is built by Collocated Cokriging simulation.Secondly,based on the geophysics curve field realizations the facies models are built.Finally the reservoir parameters model is built using Sequential Gauss simulation,constrained by the reasonable facies model which is picked through facies simulation realization analysis.This method has good performance in the phase of pre-development.
As a case study of ZH1 block in Zhunggar basin,a new method of multistep constraint stochastic modeling was presented,which integrates together geology,well logging and seismic data.The multistep modeling method can properly solve the problem that simulation target value and restriction value have no perfect relations,for example,facies and impedance.The method of multistep modeling has three steps. Firstly,the random field of typical geophysics curve,constrained by impedance data,is built by Collocated Cokriging simulation.Secondly,based on the geophysics curve field realizations the facies models are built.Finally the reservoir parameters model is built using Sequential Gauss simulation,constrained by the reasonable facies model which is picked through facies simulation realization analysis.This method has good performance in the phase of pre-development.
引文
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[6]崇仁杰．刘静．以地震反演资料为基础的相控储层建模方法在BZ25—1油田的应用[J]．中国海上油气(地质)，2003，17 (5):307-311.[CHONG Ren-jie,LIU Jing.Application of a facies-controlled reservoir modeling method based on seismic inversion data in BZ25-1 oilfield[J].China Offshore Oil and Gas(Geology),2003,17(5):307-311.]
[7]邱立伟，杨安平，龙胜祥．等．孤家子—后五家户气田地震反演与储层建模综合研究[J]．勘探地球物理进展，2004，27(1)：50-52.[QIU Li-wei,YANG An-ping,LONG Sheng-xiang,et al.Geostatistical seismic inversion and reservoir modeling study in Oujiazi-Houwujiahu Region[J].Progress in Explora- tion Geophysics,2004,27(1):50-52.]
[8]周丽清，赵丽敏．赵国梁，等．高分辨率地震约束相建模[J]．石油勘探与开发,2002,29(3):56-58.[ZHOU Li-qing,ZHAO Li-min,ZHAO Guo-liang,et al.Stochastic facies modelling constrained by high-resolution seismic data[J].Petroleum Ex- ploration and Development,2002,29(3):56-58.]
[2]吴胜和，刘英，范峥．等．应用地质和地震信息进行三维沉积微相随机建模[J]．古地理学报．2003，5(4)：439—449．[WU Sheng-he,LIU Ying,FAN Zheng,et al.3D stochastic model- ing of sedimentary microfacies with geological and seismic data [J].Journal of Palaeogeography,2003,5(4):439-449.]
[3]Tingting Yao.Integration of seismic attribute map into 3D faci- es modeling[J].Journal of Petroleum Science and Engineer- ing,2000;69-84.
[4]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，2000，15(6)：9-13．[YANG Xiao-ping，DONG Chun-rong.Effect of seismic inversion technique in reservoir modeling[J].Journal of Xi'an Petroleum Institute (Natural Science Edition),2000,15(6):9-13.]
[5]杨勇，孟海泉，别爱芳，等．基于地震反演的储层建模及实例分析[J]．江汉石油学院学报，2003，25(3)：49-50．[YANG Yong,MENG Hai-quan,BIE Ai-fang,et al.A case study of reservoir modeling with seismic inversion[J].Journal of Jiang- ban Petroleum Institute,2003,25(3):49-50.]
[6]崇仁杰．刘静．以地震反演资料为基础的相控储层建模方法在BZ25—1油田的应用[J]．中国海上油气(地质)，2003，17 (5):307-311.[CHONG Ren-jie,LIU Jing.Application of a facies-controlled reservoir modeling method based on seismic inversion data in BZ25-1 oilfield[J].China Offshore Oil and Gas(Geology),2003,17(5):307-311.]
[7]邱立伟，杨安平，龙胜祥．等．孤家子—后五家户气田地震反演与储层建模综合研究[J]．勘探地球物理进展，2004，27(1)：50-52.[QIU Li-wei,YANG An-ping,LONG Sheng-xiang,et al.Geostatistical seismic inversion and reservoir modeling study in Oujiazi-Houwujiahu Region[J].Progress in Explora- tion Geophysics,2004,27(1):50-52.]
[8]周丽清，赵丽敏．赵国梁，等．高分辨率地震约束相建模[J]．石油勘探与开发,2002,29(3):56-58.[ZHOU Li-qing,ZHAO Li-min,ZHAO Guo-liang,et al.Stochastic facies modelling constrained by high-resolution seismic data[J].Petroleum Ex- ploration and Development,2002,29(3):56-58.]
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