葡萄花油田注采系统调整方法研究
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摘要
葡萄花油田北部经过20多年的注水开发,先后经过了井网一次均匀加密和井网非均匀二次加密等开发调整过程,随着油田综合含水的不断上升,油井的采液指数在不断增大,为了保持注采平衡,需要不断增加水井的注水量,即增加注水井数。而葡北油田进入中高含水期的注采系统调整还没有开展过,因此,很有必要开展注采系统调整方法研究,通过开辟试验区以求找到最适应现开采条件下的调整方法,最大限度的提高水驱控制程度,增加原油可采储量,为油田可持续发展奠定物质基础。
本文从葡北油田的实际出发,论述了注采系统调整的必要性和可行性,通过对葡北二断块的研究,目前葡北油田存在油水井数比大,油田地层压力水平恢复受到限制,油田产量递减快等问题,从油水井数比和开发指标情况看,需要进行注采系统调整。根据井网分布编制了五套注采调整方案,并分别进行了数值模拟,从模拟结果看,方案五最终采收率最高为40.68%,其次是方案一、二为38.36%和38.5%,其它几个方案与基础方案相差不大,前四套方案水驱厚度都有不同程度的损失,且转注井产量损失也大,因此我们选择方案五为执行方案,油田最终采收率由36.76%提高到39.70%,提高2.94个百分点。葡北二断块的现场实验共确定转注井26口,转注方案实施后周围油井的油层动用状况得到改善,调整区产量稳定回升,含水上升速度得到减缓,新增可采储量60多万吨,同时也为措施增产创造了有利条件,达到了预期的调整目标。
通过研究表明,得出的一套低渗透窄小砂体油田中高含水期注采系统调整方法,可推广应用于大庆油田其它地质条件类似的油田,改善油田开发效果,带来可观的经济效益,具有广泛的适用性和推广性。
By 20 years’waterflood development, north of Putaohua oilfield has actualized primary homogeneous infill exploitation regulation and secondary nonhomogeneous infill exploitation regulation to well pattern successively. Along with the incessant rising of composite water cut and ceaseless accretion of oil well’s fluid productivity index, oilfield need increase water well’s water injection rate ceaselessly (quantity of water injection well) to keep balanced offtake.However Pubei oilfield hasn’t developed injection-production system regulation in high water cut stage, so it is necessary to develop the research of injection-production system regulation method. By means of verifying the feasibility and effect of the method in experimental area, raising waterflood control degree farthest, increasing recoverable reserves of oil, establishing substantial foundation for sustainable development of oilfield.
The article discusses the necessity and feasibility of injection-production system regulation from Pubei oilfield fact. Through the research to Pubei second BLK, it is knowable that Pubei oilfield exists many question , for example, the oil well quantity-water well quantity ratio is big, oilfield FMP level recovering is confined, the declining rate of oilfield output is quick. From observing The oil well quantity-to-water well quantity ratio and development index, we know oilfield need develop injection-production system regulation. The article draws up five injection-production regulation arrangements and proceeds numerical analogue respectively. Observing the analogue result, ultimate recovery factor of the fifth arrangement which is maximal is 40.68%,the first arrangement is 38.36% and the second arrangement is 38.5%,other arrangements are close to the base case. The waterflood thickness of the frontal four arrangements have different degree loss and conversion well output’s loss is big,so we choose the fifth arrangement as the execute case.The ultimate recovery factor is raised 2.94% (from 36.76% to 39.70%).Through the field conduct in Pubei second BLK, confirming 26 conversion wells together.After actualizing conversion arrangement, using status of oil layer is improved, output ascends steadily in regulation area, ascending velocity of cut slows down.it creats advantage for increasing production with measure.it achieves anticipative regulation aim.
The research manifests the suit of injection-production system regulation method which is fit for low permeable sublayer narrow and small sandstone oilfield in high water cut stage can apply at other oilfield whose geologic condition resembles Daqing oilfield’s.It can improve oilfield development effect and bring considerable economic benefit,so it has broad applicability and generalized effect.
本文从葡北油田的实际出发,论述了注采系统调整的必要性和可行性,通过对葡北二断块的研究,目前葡北油田存在油水井数比大,油田地层压力水平恢复受到限制,油田产量递减快等问题,从油水井数比和开发指标情况看,需要进行注采系统调整。根据井网分布编制了五套注采调整方案,并分别进行了数值模拟,从模拟结果看,方案五最终采收率最高为40.68%,其次是方案一、二为38.36%和38.5%,其它几个方案与基础方案相差不大,前四套方案水驱厚度都有不同程度的损失,且转注井产量损失也大,因此我们选择方案五为执行方案,油田最终采收率由36.76%提高到39.70%,提高2.94个百分点。葡北二断块的现场实验共确定转注井26口,转注方案实施后周围油井的油层动用状况得到改善,调整区产量稳定回升,含水上升速度得到减缓,新增可采储量60多万吨,同时也为措施增产创造了有利条件,达到了预期的调整目标。
通过研究表明,得出的一套低渗透窄小砂体油田中高含水期注采系统调整方法,可推广应用于大庆油田其它地质条件类似的油田,改善油田开发效果,带来可观的经济效益,具有广泛的适用性和推广性。
By 20 years’waterflood development, north of Putaohua oilfield has actualized primary homogeneous infill exploitation regulation and secondary nonhomogeneous infill exploitation regulation to well pattern successively. Along with the incessant rising of composite water cut and ceaseless accretion of oil well’s fluid productivity index, oilfield need increase water well’s water injection rate ceaselessly (quantity of water injection well) to keep balanced offtake.However Pubei oilfield hasn’t developed injection-production system regulation in high water cut stage, so it is necessary to develop the research of injection-production system regulation method. By means of verifying the feasibility and effect of the method in experimental area, raising waterflood control degree farthest, increasing recoverable reserves of oil, establishing substantial foundation for sustainable development of oilfield.
The article discusses the necessity and feasibility of injection-production system regulation from Pubei oilfield fact. Through the research to Pubei second BLK, it is knowable that Pubei oilfield exists many question , for example, the oil well quantity-water well quantity ratio is big, oilfield FMP level recovering is confined, the declining rate of oilfield output is quick. From observing The oil well quantity-to-water well quantity ratio and development index, we know oilfield need develop injection-production system regulation. The article draws up five injection-production regulation arrangements and proceeds numerical analogue respectively. Observing the analogue result, ultimate recovery factor of the fifth arrangement which is maximal is 40.68%,the first arrangement is 38.36% and the second arrangement is 38.5%,other arrangements are close to the base case. The waterflood thickness of the frontal four arrangements have different degree loss and conversion well output’s loss is big,so we choose the fifth arrangement as the execute case.The ultimate recovery factor is raised 2.94% (from 36.76% to 39.70%).Through the field conduct in Pubei second BLK, confirming 26 conversion wells together.After actualizing conversion arrangement, using status of oil layer is improved, output ascends steadily in regulation area, ascending velocity of cut slows down.it creats advantage for increasing production with measure.it achieves anticipative regulation aim.
The research manifests the suit of injection-production system regulation method which is fit for low permeable sublayer narrow and small sandstone oilfield in high water cut stage can apply at other oilfield whose geologic condition resembles Daqing oilfield’s.It can improve oilfield development effect and bring considerable economic benefit,so it has broad applicability and generalized effect.
引文
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[6] LiuHe ,Separate Layer Production and Water Injection Technology Developed in Daqing Oil Field,ZhongGuoYouQi,2004,TE357.62:36-37
[7] Crichlow,H.B.Modern Reservoir Engineering—A simulation Approach,Prenicehall,Inc.,Englewood Cliffs,New Jersey,1977:56-59.
[8] Price,H.S.and Coats,K.H.“Direct Methods in Reservoir Simulation,”Trans. AIME 1968,5,(559):42-46.
[9] Slater , G.E.and Durrer , E.J.“Adjustment of reservoir simulation models to match field performance,”Trans.SPE of AIME, 1971,(251):235-305.
[10] Yuan AiWu Oilfield injection-production ratio prediction by artificial neural network[J],Oil Production Engineering,2005,24.2.
[11] Wang Zhijun,Liu Xiuhang,Quantitative Evaluation Method for Injection-Production Adaptability of Oil Field in Later High Water Cut Stage and Adjustment Solution[J], Fault-Block Oil and Gas Field,2005,24.06.
[12] Zhou JinYing,Wan YiWen,A new method of calculating rational well spacing density in late stage of high water cut[J],Fault-Block Oil and Gas Field,2008,15.01.
[13] Jia ZiLi,Gao WenJun, Determination of Reasonable Well Spacing Density and Injection-to-Production Well Ratio in Waterflooding Field[J], Xinjiang Petroleum Geology,2005,26.05.
[14]钱德富,殷代印.确定区块合理注采井数比,合理注采比的数学模型及应用[J].大庆石油地质与开发,1994, TE357.62:37-41.
[15]白庆丽.油层注采系统调整方法[J].油气田地面工程,2007,23(5): 32-33
[16]王忠庆.杏八九区纯油区萨Ⅲ组调整井注采系统调整效果分析[J]..黑龙江科技信息, 2007,32(8):
[17]许洪东.窄小砂体油田注采系统调整技术研究[J].世界地质. 2001,11(9):148-154.
[18]张威,梅冬,李敏,张恒发,杨积斌.裂缝性低渗透油藏注采系统调整技术研究[J].大庆石油地质与开发,2006,14(2):43-46.
[19]周学民,隋新光.喇,萨,杏油田注采系统调整的研究和探讨[J] .大庆石油地质与开发,1991,24(5):30-37.
[20]钟德康,李伯虎.朝阳沟油田注采系统调整效果[J].石油勘探与开发,1998, 12(6):53-56.
[21]王中敏,张海涛,孙连柱.新肇油田注采系统调整井区合理注采比浅析[J].石油知识,2006,32(3):14-14.
[22]葛德春葛阳.油田生产注采系统调整的方案研究[J]。活力。2005, 5(1):200-200.
[23]廖春,刘兰桂,赵英,程红卫.尕斯库勒油田E3油藏南区注采系统调整研究[J].青海石油,2003, 23(6):61-66.
[24]方艳君,刘端奇,王天智,江明立,楼唤春.喇萨杏油田注采系统适应性评价及调整方式研究[J].大庆石油地质与开发,2007, 27(6):72-75.
[25]刘斌刘灵芝.萨南油田二区东块高台子油层注采系统调整[J].大庆石油学院学报,2000, 24(4):85-87.
[26]万新德,方庆,林立,曾雪梅.萨尔图油田北三东注采系统调整的实践与认识[J].大庆石油地质与开发, 2006, 28(5):67-69.
[27]綦金丽孙强.Petrel构造建模技术在聚驱注采系统调整中的应用[J].大庆石油学院学报,2006, 5(2):43-45,56.
[28]林文兴,胡国林,魏友国,张连友,曲凡军.中二中馆3—4单元注聚试验井组注采调整方法探讨[J],油气田地面工程,2004, TE357.46:37-37.
[29]韩大匡.深度开发高含水油田提高采收率问题的探讨[J].石油勘探与开发,1995,22(5):47-55.
[30]尹太举,张昌民,赵红静等.依据高分辨率层序地层学进行剩余油分布预测[J].石油勘探与开发,2001,28(4):79-81.
[31]邵先杰,孙冲,王国鹏等.浅薄层特、超稠油注蒸气吞吐后剩余油分布研究[J].石油勘探与开发,2005,32(1):131-133.
[32]杜庆龙,王元庆,朱丽红等.不同规模地质体剩余油的形成与分布研究[J].石油勘探与开发,2004,31增刊:95-99.
[33]郭烷奎.大庆油田地质开发技术的进步与展望[J].大庆石油地质与开发,2004,23(5).
[34]冉启佑.剩余油研究现状与发展趋势[J].油气地质与采收率,2003,10(5):50～51.
[35]李胜利,于兴河,高兴军等.剩余油分布研究新方法—灰色关联法[J].石油天然气地质,2003,24(2):175-179.
[36]毛明海,樊庆真,王守珍.禹城地区古近系油气勘探方向分析[J].资源产业,2005,7(4):47-49
[37]刘晓艳,陈月明等.特高含水期油田剩余油评价方法在某单元的应用[J].西部探矿工程,2006,12(12).
[38]李胜利,于兴河等.生产动态和油藏静态结合研究剩余油分布的理论与方法[J].资源与产业,2006.
[39]刘泽容等.油藏描述原理与技术方法[M].北京:石油工业出版社,2003.
[40]魏纪德,杜庆龙,林春明,张同意.大庆油田剩余油的影响因素及分布[J].石油与天然气地质,2001,22(l):57-59.
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[2]Wadsley, A.W., Erlandsen, S., and Goemans H.W.:“HES, A Tool for Integrated Fluvial Architecture Modeling and Numerical Simulation of Recovery Processes.”Paper presented at the 1989 Intl. Conference on North Sea Oil and Gas Reservoirs, Trondheim, May 8-11.
[3]King, P.R.:“The Connectivity and Conductivity of Overlapping Sandbodies,”paper presented at the 1989 Intl. Conference on North Sea Oil and Gas Reservoirs, Trondheim, May 8-11.
[4]Stephen,K.D.,and M.Dalrymple.Reservoir simulations developed from an outcrop of incised valley fill srtata.AAPG Bulletin,2002,86(5):797—822.
[5]White,C.D.,and M.D.Barton.Translating outcrop data to flow models,with application to the Ferron sandstone.Society of Petroleum Engineers Reservoir Evalution and Engineering,1999,2(4):341—350.
[6] LiuHe ,Separate Layer Production and Water Injection Technology Developed in Daqing Oil Field,ZhongGuoYouQi,2004,TE357.62:36-37
[7] Crichlow,H.B.Modern Reservoir Engineering—A simulation Approach,Prenicehall,Inc.,Englewood Cliffs,New Jersey,1977:56-59.
[8] Price,H.S.and Coats,K.H.“Direct Methods in Reservoir Simulation,”Trans. AIME 1968,5,(559):42-46.
[9] Slater , G.E.and Durrer , E.J.“Adjustment of reservoir simulation models to match field performance,”Trans.SPE of AIME, 1971,(251):235-305.
[10] Yuan AiWu Oilfield injection-production ratio prediction by artificial neural network[J],Oil Production Engineering,2005,24.2.
[11] Wang Zhijun,Liu Xiuhang,Quantitative Evaluation Method for Injection-Production Adaptability of Oil Field in Later High Water Cut Stage and Adjustment Solution[J], Fault-Block Oil and Gas Field,2005,24.06.
[12] Zhou JinYing,Wan YiWen,A new method of calculating rational well spacing density in late stage of high water cut[J],Fault-Block Oil and Gas Field,2008,15.01.
[13] Jia ZiLi,Gao WenJun, Determination of Reasonable Well Spacing Density and Injection-to-Production Well Ratio in Waterflooding Field[J], Xinjiang Petroleum Geology,2005,26.05.
[14]钱德富,殷代印.确定区块合理注采井数比,合理注采比的数学模型及应用[J].大庆石油地质与开发,1994, TE357.62:37-41.
[15]白庆丽.油层注采系统调整方法[J].油气田地面工程,2007,23(5): 32-33
[16]王忠庆.杏八九区纯油区萨Ⅲ组调整井注采系统调整效果分析[J]..黑龙江科技信息, 2007,32(8):
[17]许洪东.窄小砂体油田注采系统调整技术研究[J].世界地质. 2001,11(9):148-154.
[18]张威,梅冬,李敏,张恒发,杨积斌.裂缝性低渗透油藏注采系统调整技术研究[J].大庆石油地质与开发,2006,14(2):43-46.
[19]周学民,隋新光.喇,萨,杏油田注采系统调整的研究和探讨[J] .大庆石油地质与开发,1991,24(5):30-37.
[20]钟德康,李伯虎.朝阳沟油田注采系统调整效果[J].石油勘探与开发,1998, 12(6):53-56.
[21]王中敏,张海涛,孙连柱.新肇油田注采系统调整井区合理注采比浅析[J].石油知识,2006,32(3):14-14.
[22]葛德春葛阳.油田生产注采系统调整的方案研究[J]。活力。2005, 5(1):200-200.
[23]廖春,刘兰桂,赵英,程红卫.尕斯库勒油田E3油藏南区注采系统调整研究[J].青海石油,2003, 23(6):61-66.
[24]方艳君,刘端奇,王天智,江明立,楼唤春.喇萨杏油田注采系统适应性评价及调整方式研究[J].大庆石油地质与开发,2007, 27(6):72-75.
[25]刘斌刘灵芝.萨南油田二区东块高台子油层注采系统调整[J].大庆石油学院学报,2000, 24(4):85-87.
[26]万新德,方庆,林立,曾雪梅.萨尔图油田北三东注采系统调整的实践与认识[J].大庆石油地质与开发, 2006, 28(5):67-69.
[27]綦金丽孙强.Petrel构造建模技术在聚驱注采系统调整中的应用[J].大庆石油学院学报,2006, 5(2):43-45,56.
[28]林文兴,胡国林,魏友国,张连友,曲凡军.中二中馆3—4单元注聚试验井组注采调整方法探讨[J],油气田地面工程,2004, TE357.46:37-37.
[29]韩大匡.深度开发高含水油田提高采收率问题的探讨[J].石油勘探与开发,1995,22(5):47-55.
[30]尹太举,张昌民,赵红静等.依据高分辨率层序地层学进行剩余油分布预测[J].石油勘探与开发,2001,28(4):79-81.
[31]邵先杰,孙冲,王国鹏等.浅薄层特、超稠油注蒸气吞吐后剩余油分布研究[J].石油勘探与开发,2005,32(1):131-133.
[32]杜庆龙,王元庆,朱丽红等.不同规模地质体剩余油的形成与分布研究[J].石油勘探与开发,2004,31增刊:95-99.
[33]郭烷奎.大庆油田地质开发技术的进步与展望[J].大庆石油地质与开发,2004,23(5).
[34]冉启佑.剩余油研究现状与发展趋势[J].油气地质与采收率,2003,10(5):50～51.
[35]李胜利,于兴河,高兴军等.剩余油分布研究新方法—灰色关联法[J].石油天然气地质,2003,24(2):175-179.
[36]毛明海,樊庆真,王守珍.禹城地区古近系油气勘探方向分析[J].资源产业,2005,7(4):47-49
[37]刘晓艳,陈月明等.特高含水期油田剩余油评价方法在某单元的应用[J].西部探矿工程,2006,12(12).
[38]李胜利,于兴河等.生产动态和油藏静态结合研究剩余油分布的理论与方法[J].资源与产业,2006.
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[40]魏纪德,杜庆龙,林春明,张同意.大庆油田剩余油的影响因素及分布[J].石油与天然气地质,2001,22(l):57-59.
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