基于开发流体势场的低渗储层剩余油分布研究
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摘要
针对低渗透油藏采收率相对较低、剩余油分布复杂的问题,采用低渗油藏开发流体势理论模型研究关键参数评价及实例区应用的方法,建立了低渗油藏不同开发阶段的流体势理论模型。基于模型建立庄36区长8油藏流体势定量分布图,对长8油藏剩余油分布进行研究。结果表明:开发流体势包括位能、压能、动能及界面能,提出了3类低势能控制的剩余油分布区,即低位能低势潜力区、低压能低势潜力区及低界面能低势潜力区。针对不同类型低势能潜力区提出不同的挖潜措施,应用上述方案在研究区取得了较好的现场应用效果,可为低渗油藏剩余油的分布研究提供参考。
Aimed at the low recovery rate and complex distribution of remaining oil in low permeability reservoir,development fluid potential theoretical model of different development stage in low permeability reservoir was established,based on which the fluid potential distribution model of Chang 8reservoir in Zhuang36 block has been obtained and its remaining oil distribution has been studied.The results show that development fluid potential in low permeability reservoir includes gravitational potential energy,pressure energy,kinetic energy and interfacial energy.Three kinds of remaining oil patterns controlled by low potential are proposed:low gravitational,low pressure and low interfacial energy potential area.Different exploitation measures have been put forward according to different types of low fluid potential energy area.The above method has been applied in studied area with good effect.For other low permeability reservoirs,the use of this method has great significance in the study of remaining oil distribution.
Aimed at the low recovery rate and complex distribution of remaining oil in low permeability reservoir,development fluid potential theoretical model of different development stage in low permeability reservoir was established,based on which the fluid potential distribution model of Chang 8reservoir in Zhuang36 block has been obtained and its remaining oil distribution has been studied.The results show that development fluid potential in low permeability reservoir includes gravitational potential energy,pressure energy,kinetic energy and interfacial energy.Three kinds of remaining oil patterns controlled by low potential are proposed:low gravitational,low pressure and low interfacial energy potential area.Different exploitation measures have been put forward according to different types of low fluid potential energy area.The above method has been applied in studied area with good effect.For other low permeability reservoirs,the use of this method has great significance in the study of remaining oil distribution.
引文
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[19]张磊,文志刚,孙钰杰,等.鄂尔多斯盆地合水地区庄36井区油井见水特征分析及治理措施[J].重庆科技学院学报(自然科学版),2012,14(3):27-30.ZHANG Lei,WEN Zhigang,SUN Yujie,et al.Characteristics analysis and comprehensive treatmentof water breakthrough in Zhuang-36 Well Block of Ordos Basin[J].Journal of Chongqing University of Science and Technology(Natural Sciences Edition),2012,14(3):27-30.(in Chinese)
[20]杨正明,于荣泽,苏致新,等.特低渗透油藏非线性渗流数值模拟[J].石油勘探与开发,2010,29(1):94-98.YANG Zhengming,YU Rongze,SU Zhixin,et al.Numerical simulation of nonlinear seepage in super-low permeability reservoirs[J].Petroleum Exploration and Development,2010,29(1):94-98.(in Chinese)
[2]赵俊龙,张君峰,许浩,等.北美典型致密油地质特征对比及分类[J].岩性油气藏,2015,27(1):44-50.ZHAO Junlong,ZHANG Junfeng,XU Hao,et al.Comparison of geological characteristics and types of typical tight oil in North America[J].Lithologic Reservoirs,2015,27(1):44-50.(in Chinese)
[3]宋立忠,李本才,王芳.松辽盆地南部扶余油层低渗透油藏形成机制[J].岩性油气藏,2007,19(2):57-61.SONG Lizhong,LI Bencai,WANG Fang.Reservoir forming mechanism of low permeability reservoir of Fuyu Formation in southern Songliao Basin[J].Lithologic Reservoirs,2007,19(2):57-61.(in Chinese)
[4]杜金虎,何海清,杨涛,等.中国致密油勘探进展及面临的挑战[J].中国石油勘探,2014,19(1):1-9.DU Jinhu,HE Haiqing,YANG Tao,et al.Progress in China tight oil exploration and challenges[J].China Petroleum Exploration,2014,19(1):1-9.(in Chinese)
[5]马中良,曾溅辉,张善文,等.砂岩透镜体油运移过程模拟及成藏主控因素分析[J].岩性油气藏,2008,20(1):69-74.MA Zhongliang,ZENG Jianhui,ZHANG Shanwen,et al.Migration and accumulation mechanism of sand lens reservoirs and its main controlling factors[J].Lithologic Reservoirs,2008,20(1):69-74.(in Chinese)
[6]杨华,刘显阳,张才利,等.鄂尔多斯盆地三叠系延长组低渗透岩性油藏主控因素及其分布规[J].岩性油气藏,2007,19(3):1-6.YANG Hua,LIU Xianyang,ZHANG Caili,et al.The main controlling factors and distribution regulation of low-permeability lithologic reservoirs in Triassic Yanchang Formation of Ordos Basin[J].Lithologic Reservoirs,2007,19(3):1-6.(in Chinese)
[7]刘英辉,朱筱敏,朱茂,等.准噶尔盆地乌-夏地区二叠系风城组致密油储层特征[J].岩性油气藏,2014,26(4):66-72.LIU Yinghui,ZHU Xiaomin,ZHU Mao,et al.Characteristics of tight oil reservoirs of the Permian Fengcheng Formation in Wu-Xia area,Junggar Basin[J].Lithologic Reservoirs,2014,26(4):66-72.(in Chinese)
[8]蔡喜东,姚约东,刘同敬,等.低渗透裂缝性油藏渗吸过程影响因素研究[J].中国科技论文在线,2009,4(11):806-812.CAI Xidong,YAO Yuedong,LIU Tongjing,et al.Study on factors influencing imbibition process in lowpermeability fractured reservoir[J].Sciencepaper Online,2009,4(11):806-812.(in Chinese)
[9]岳大力,吴胜和,温立峰,等.点坝内部构型控制的剩余油分布物理模拟[J].中国科技论文,2013,8(5):473-476.YUE Dali,WU Shenghe,WEN Lifeng,et al.Physical simulation of remaining oil distribution controlled by reservoir architecture within point-bar of meandering river[J].China Sciencepaper,2013,8(5):473-476.(in Chinese)
[10]赵广渊,苏玉亮,王文东,等.海上低渗透油藏剩余油挖潜及布井对策[J].科学技术与工程,2013,13(24):7011-7014.ZHAO Guangyuan,SU Yuliang,WANG Wendong,et al.Remaining oil tapping and well placement strategy in offshore low permeability reservoirs[J].Science Technology and Engineering,2013,13(24):7011-7014.(in Chinese)
[11]HUBBERT M K.The theory of ground-water motion[J].The Journal of Geology,1940,48(8):785-944.
[12]HUBBERT M K.Entrapment of petroleum under hydrodynamic conditions[J].AAPG Bulletin,1953,37(8):1954-2026.
[13]ENGLAND W A,MACKENZIE A S,MANN D M,et al.The movement and entrapment of petroleum fluids in the subsurface[J].Journal of the Geological Society,1987,144(2):327-347.
[14]查明,陈发景,张一伟.压实盆地流体势场与油气运聚关系-以东营凹陷为例[J].现代地质,1996,10(1):106-109.ZHA Ming,CHEN Fajing,ZHANG Yiwei.Fluids potential field and hydrocarbons migration and accumulation in compactional flow basins:an example from Dongying Depression[J].Geoscience,1996,10(1):106-109.(in Chinese)
[15]刘震,金博,韩军,等.准噶尔盆地东部流体势场演化对油气运聚的控制[J].石油勘探与开发,2000,27(4):59-63.LIU Zhen,JIN Bo,HAN Jun,et al.The control of palaeo-fluid-potential over migration of oil and gas in the east of Junggar Basin[J].Petroleum Exploration and Development,2000,27(4):59-63.(in Chinese)
[16]金博,刘震,何汉漪,等.莺歌海盆地流体势场演化对天然气运聚的控制[J].新疆石油地质,2005,26(1):25-28.JIN Bo,LIU Zhen,He Hanyi,et al.The control of paleo-fluid potential evolution to natural gas migration and accumulation in Yinggehai Basin[J].Xinjiang Petroleum Geology,2005,26(1):25-28.(in Chinese)
[17]赵俊威,徐怀民,徐朝晖,等.中高渗油藏开发流体势对剩余油分布控制机理[J].中国矿业大学学报,2016,45(3):525-533.ZHAO Junwei,XU Huaimin,XU Zhaohui,et al.Controlling mechanism on remaining oil distribution by development fluid potential in middle-high permeability reservoir[J].Journal of China University of Mining&Technology,2016,45(3):525-533.(in Chinese)
[18]潘静文,文志刚,刁帆,等.西峰油田庄36井区长81储层特征及评价[J].岩性油气藏,2012,24(1):40-45.PAN Jingwen,WEN Zhigang,DIAO Fan,et al.Characteristics and evaluation of Chang 81 reservoir of Zhuang 36well area in Xifeng Oilfield[J].Lithologic Reservoirs,2012,24(1):40-45.(in Chinese)
[19]张磊,文志刚,孙钰杰,等.鄂尔多斯盆地合水地区庄36井区油井见水特征分析及治理措施[J].重庆科技学院学报(自然科学版),2012,14(3):27-30.ZHANG Lei,WEN Zhigang,SUN Yujie,et al.Characteristics analysis and comprehensive treatmentof water breakthrough in Zhuang-36 Well Block of Ordos Basin[J].Journal of Chongqing University of Science and Technology(Natural Sciences Edition),2012,14(3):27-30.(in Chinese)
[20]杨正明,于荣泽,苏致新,等.特低渗透油藏非线性渗流数值模拟[J].石油勘探与开发,2010,29(1):94-98.YANG Zhengming,YU Rongze,SU Zhixin,et al.Numerical simulation of nonlinear seepage in super-low permeability reservoirs[J].Petroleum Exploration and Development,2010,29(1):94-98.(in Chinese)