薄层碳酸盐岩油藏水平井开发建模策略——以阿曼DL油田为例
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摘要
利用水平井开发薄层油藏是目前油田开发的一项重要技术手段,在国内外得到了广泛应用。如何利用地震、地质、测井、试井等信息,采用最佳建模策略,建立能够满足薄层油藏水平井开发要求的高精度储集层地质模型成为一个具有挑战性的课题。以阿曼DL油田为例,针对研究区碳酸盐岩储集层沉积成因特点,根据多学科综合一体化原则,基于地质概念,集成多种数据进行综合建模研究,采用"三步建模法"(储集层沉积模式;沉积相模型;储集层参数模型),将确定性建模与随机建模相结合,建模过程中充分利用多分支水平井资料,提高了模型的精度。通过模型统计对比及油藏数值模拟检验,证实了所建模型的正确性。图7参10
Developing thin bed reservoirs with horizontal wells is an important technique,which has been widely adopted all over the world.It is a big challenge how to integrate seismic,geology,logging and testing data,and employ optimum modeling strategies to build a high resolution geological model for meeting thin reservoir development in horizontal wells.Taking DL Oilfield,Oman for example,in response to carbonate reservoirs mainly controlled by deposition,the geo-modeling strategies of "three-step geological modeling methodology"(that is depositional model,facies model and petrophysical model) and integrated deterministic modeling and stochastic modeling were employed based on multi-disciplinary knowledge and geological concepts as well as incorporating various data.Especially,data from multi-lateral horizontal wells have been fully taken advantage of in the process of modeling to enhance the accuracy of the geological model.Statistical model comparisons and reservoir simulation tests indicate that the built geological model is reliable and accurate.
Developing thin bed reservoirs with horizontal wells is an important technique,which has been widely adopted all over the world.It is a big challenge how to integrate seismic,geology,logging and testing data,and employ optimum modeling strategies to build a high resolution geological model for meeting thin reservoir development in horizontal wells.Taking DL Oilfield,Oman for example,in response to carbonate reservoirs mainly controlled by deposition,the geo-modeling strategies of "three-step geological modeling methodology"(that is depositional model,facies model and petrophysical model) and integrated deterministic modeling and stochastic modeling were employed based on multi-disciplinary knowledge and geological concepts as well as incorporating various data.Especially,data from multi-lateral horizontal wells have been fully taken advantage of in the process of modeling to enhance the accuracy of the geological model.Statistical model comparisons and reservoir simulation tests indicate that the built geological model is reliable and accurate.
引文
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[3]赵国良,穆龙新,周丽清,等.油田早期评价阶段建模策略研究[J].石油学报,2007,28(4):73-76.Zhao Guoliang,Mu Longxin,Zhou Liqing,et al.Study on geo-modeling strategy for oilfield in the early evaluation stage[J].Acta Petrolei Sinica,2007,28(4):73-76.
[4]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.
[5]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.
[6]周丽清,赵丽敏,赵国良,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 Liqing,Zhao Limin,Zhao Guoliang,et al.Stochastic faciesmodeling constrained by high-resolution seismic data[J].PetroleumExploration and Development,2002,29(3):56-58.
[7]周灿灿,王拥军,周凤鸣.近源砂岩原生孔隙储集层岩石相控建模及其应用[J].石油勘探与开发,2006,33(5):553-557.Zhou Cancan,Wang Yongjun,Zhou Fengming.Modeling andapplication of the lithofacies-controlled primary pore reservoir ofproximal sandstone[J].Petroleum Exploration and Development,2006,33(5):553-557.
[8]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.
[9]李玉君,邓宏文,田文,等.波阻抗约束下的测井信息在储集层岩相随机建模中的应用[J].石油勘探与开发,2006,33(5):569-571.Li Yujun,Deng Hongwen,Tian Wen,et al.Application ofimpedance-constrained logging data in reservoir facies modeling[J].Petroleum Exploration and Development,2006,33(5):569-571.
[10]王根久,赵丽敏,李薇,等.随机建模中变差函数的敏感性研究[J].石油勘探与开发,2005,32(1):72-75.Wang Genjiu,Zhao Limin,Li Wei,et al.Sensitivity ofvariogram in stochastic modeling[J].Petroleum Exploration andDevelopment,2005,32(1):72-75.
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