岩石分类方法在油藏数值模拟中的应用
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摘要
以海外某油田前期研究方案为例,系统阐述了基于岩石分类的油藏精细描述和数值模拟方法。根据岩心、物性、薄片、扫描电镜以及毛管压力等数据的分析,将储层岩石细分为4类,并分别建立了4种岩石类型的渗透率解释模型和相对渗透率曲线,在此基础上利用三维地质建模和数值模拟技术完成对油田的整体开发指标预测。研究结果表明,精细划分岩石类型不仅能够大幅提高非均质储层渗透率的解释精度,而且可以满足前期研究阶段对不同类型储层下渗流规律的精确表征,使分类后的开发指标预测更加合理。
Taking an oversea oilfield as an example,a set of fine reservoir description and numerical simulation method with classified rock type is proposed in this paper. Four rock types are classified according to the analysis result of core,physical properties,thin section,scanning electron microscope and capillary pressure. And four permeability interpretation models and relative permeability curves can be classified respectively based on rock types.Finally the 3D quantitative characterization can be built by geological modeling and numerical simulation for the whole oilfield production prediction. The result shows that this method can not only improve the interpretation accuracy of heterogeneous reservoir permeability,but also meet the requirements of accurate description for oil flow laws in different types of rock. Only in this way,can we get more reasonable development index forecast.
Taking an oversea oilfield as an example,a set of fine reservoir description and numerical simulation method with classified rock type is proposed in this paper. Four rock types are classified according to the analysis result of core,physical properties,thin section,scanning electron microscope and capillary pressure. And four permeability interpretation models and relative permeability curves can be classified respectively based on rock types.Finally the 3D quantitative characterization can be built by geological modeling and numerical simulation for the whole oilfield production prediction. The result shows that this method can not only improve the interpretation accuracy of heterogeneous reservoir permeability,but also meet the requirements of accurate description for oil flow laws in different types of rock. Only in this way,can we get more reasonable development index forecast.
引文
[1]GUNTER W G,PINCH J J,FINNERAN J M,et al.Overview of an integrated process model to develop petrophysical based reservoir descriptions[G].SPE 38748,1997.
[2]AMAEFULE J O,ALTUNBAY M,TIAB D,et al.Enhanced reservoir description:using core and log data to identify hydraulic(flow)units and predict permeability in uncored intervalswells[G].SPE 26436,1993.
[3]岳大力,吴胜和,林承焰.碎屑岩储层流动单元研究进展[J].中国科技论文在线,2008,3(11):810-818.
[4]范子菲,李孔绸,李建新,等.基于流动单元的碳酸盐岩剩余油分布规律[J].石油勘探与开发,2014,41(5):578-584.
[5]吴胜和,李宇鹏.储层地质建模的现状与展望[J].海相油气地质,2007,12(3):53-60.
[6]刘文岭.地震约束储层地质建模技术[J].石油学报,2008,29(1):64-68.
[7]袁新涛,彭仕宓,林承焰.分流动单元精确求取储层渗透率的方法[J].石油学报,2005,26(6):78-81.
[8]靳彦欣,林承焰,赵丽,等.关于用FZI划分流动单元的探讨[J].石油勘探与开发,2004,31(5):130-132.
[9]姚合法,林承焰,靳秀菊,等.多参数判别流动单元的方法探讨[J].沉积学报,2006,24(1):91-95.
[10]蒋平,吕明胜,王国亭.基于储层构型的流动单元划分:以扶余油田东5-9区块扶杨油层为例[J].石油实验地质,2013,35(2):213-219.
[11]李阳.储层流动单元模式及剩余油分布规律[J].石油学报,2003,24(3):52-55.
[12]霍春亮,古莉,赵春明,等.基于地震、测井和地质综合一体化的储层精细建模[J].石油学报,2007,28(6):66-71.
[13]杨希濮,杨小丽,刘钧,等.一体化储层精细分类方法在非均质储层定量表征中的应用[J].岩性油气藏,2017,29(1):124-129.
[14]PITTMAN D E.Relationship of porosity and permeability to virous parameters derived from mercury injection-capillary pressure curves for sandstone[J].The American Association of Petroleum Geologists Bulletin,1992,76(2):191-198.
[15]GUNTER G W,FINNERAN J M,HARTMANN D J,et al.Early determination of reservoir flow units using an integrated petrophysical method[G].SPE 38679,1997.
[2]AMAEFULE J O,ALTUNBAY M,TIAB D,et al.Enhanced reservoir description:using core and log data to identify hydraulic(flow)units and predict permeability in uncored intervalswells[G].SPE 26436,1993.
[3]岳大力,吴胜和,林承焰.碎屑岩储层流动单元研究进展[J].中国科技论文在线,2008,3(11):810-818.
[4]范子菲,李孔绸,李建新,等.基于流动单元的碳酸盐岩剩余油分布规律[J].石油勘探与开发,2014,41(5):578-584.
[5]吴胜和,李宇鹏.储层地质建模的现状与展望[J].海相油气地质,2007,12(3):53-60.
[6]刘文岭.地震约束储层地质建模技术[J].石油学报,2008,29(1):64-68.
[7]袁新涛,彭仕宓,林承焰.分流动单元精确求取储层渗透率的方法[J].石油学报,2005,26(6):78-81.
[8]靳彦欣,林承焰,赵丽,等.关于用FZI划分流动单元的探讨[J].石油勘探与开发,2004,31(5):130-132.
[9]姚合法,林承焰,靳秀菊,等.多参数判别流动单元的方法探讨[J].沉积学报,2006,24(1):91-95.
[10]蒋平,吕明胜,王国亭.基于储层构型的流动单元划分:以扶余油田东5-9区块扶杨油层为例[J].石油实验地质,2013,35(2):213-219.
[11]李阳.储层流动单元模式及剩余油分布规律[J].石油学报,2003,24(3):52-55.
[12]霍春亮,古莉,赵春明,等.基于地震、测井和地质综合一体化的储层精细建模[J].石油学报,2007,28(6):66-71.
[13]杨希濮,杨小丽,刘钧,等.一体化储层精细分类方法在非均质储层定量表征中的应用[J].岩性油气藏,2017,29(1):124-129.
[14]PITTMAN D E.Relationship of porosity and permeability to virous parameters derived from mercury injection-capillary pressure curves for sandstone[J].The American Association of Petroleum Geologists Bulletin,1992,76(2):191-198.
[15]GUNTER G W,FINNERAN J M,HARTMANN D J,et al.Early determination of reservoir flow units using an integrated petrophysical method[G].SPE 38679,1997.