聚驱后聚合物表面活性剂驱提高采收率实验研究
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摘要
我国拥有丰富地质储量的石油资源,但大部分主力油田经过一次、二次采油后均已进入高含水阶段,油田持续稳产的难度越来越大,为此开展了多项提高采收率新技术研究。聚合物驱油已经在大庆油田大面积推广,成为油田可持续发展的重要措施。然而,在大规模开展聚合物驱工业化应用后,随之而来也出现一些问题。有些区块已经进入聚合物驱后续水驱阶段,聚合物驱后,如何进一步提高原油采收率保持油田可持续发展,就显得尤为重要。
本文通过室内物理模拟实验,在人造岩芯上(Kg=1000md、2000md,4.5am×4.5cm×30cm)进行了聚合物驱后二元复合体系进一步提高采收率实验研究。综合考虑了二元体系活性剂浓度、二元体系聚合物浓度、二元体系聚合物分子量,二元体系段塞大小等多种因素对二元复合体系驱油效果的影响,并且对二元体系、三元体系和功能性聚合物的驱油效果进行了对比,还通过三管并联实验对二元复合体系驱油效果进行了评价,最后又在天然岩芯上对二元体系驱油效果进行了验证。
本文取得了二元体系采收率提高幅度随二元体系活性剂浓度增加而增加、随二元体系聚合物浓度的增加而增加、随二元体系主段塞大小的增加而增加等认识。通过本文的研究以及项目所取得的认识,为聚合物驱后进一步提高原油采收率提供技术储备,对大庆油田的可持续发展具有重大意义。
Our country has a large amount of petroleum reserves,but after the primary and secondary recovery,mostreservoirs entered a high water cut period , it is more and more difficult to stable the production of this oil field. Therefore, several projects for EOR have being carried out. Polymer flooding has been expanded in the big area of the daqing oil-field,becoming the important measure keeping the oil-field sustained development,and still extends.After large-scale polymer flooding industrialization application,however,it follows to also appear some problems.In some area polymer flooding has always reached the follow-up water flooding stage.after polymer flooding,how to further enhance oil recovery and keep the oil-field sustained development is important.
Through the indoor physics imitating experiment, the main task is on the artificial homogeneous core (Kg=1000md、2000md, 4.5cm×4.5cm×30cm) to carry out after polymer flooding surfactant-polymer system further enhances oil recovery experiment research. Considering many factors , such as which effect flooding efficiency of the polymer-surfactant system ,surfactant concentration, polymer concentration, polymer molecular weight and slug size of the binary compound system ,and compares flooding efficiency of polymer-surfactant system , ternary compound system and the functional polymers , then in the core of binary system of natural oil displacement effect was verified.
The results from paper show that oil recovery efficiency of binary compound flooding increases with surfactant concentration of the binary system, increases with polymer concentration of the dual system, the main slug size increases, etc. This research and project provides technical reserves for daqing oilfield on further enhance oil recovery after polymer flooding, and is the significance of daqing oilfield sustainable development.
本文通过室内物理模拟实验,在人造岩芯上(Kg=1000md、2000md,4.5am×4.5cm×30cm)进行了聚合物驱后二元复合体系进一步提高采收率实验研究。综合考虑了二元体系活性剂浓度、二元体系聚合物浓度、二元体系聚合物分子量,二元体系段塞大小等多种因素对二元复合体系驱油效果的影响,并且对二元体系、三元体系和功能性聚合物的驱油效果进行了对比,还通过三管并联实验对二元复合体系驱油效果进行了评价,最后又在天然岩芯上对二元体系驱油效果进行了验证。
本文取得了二元体系采收率提高幅度随二元体系活性剂浓度增加而增加、随二元体系聚合物浓度的增加而增加、随二元体系主段塞大小的增加而增加等认识。通过本文的研究以及项目所取得的认识,为聚合物驱后进一步提高原油采收率提供技术储备,对大庆油田的可持续发展具有重大意义。
Our country has a large amount of petroleum reserves,but after the primary and secondary recovery,mostreservoirs entered a high water cut period , it is more and more difficult to stable the production of this oil field. Therefore, several projects for EOR have being carried out. Polymer flooding has been expanded in the big area of the daqing oil-field,becoming the important measure keeping the oil-field sustained development,and still extends.After large-scale polymer flooding industrialization application,however,it follows to also appear some problems.In some area polymer flooding has always reached the follow-up water flooding stage.after polymer flooding,how to further enhance oil recovery and keep the oil-field sustained development is important.
Through the indoor physics imitating experiment, the main task is on the artificial homogeneous core (Kg=1000md、2000md, 4.5cm×4.5cm×30cm) to carry out after polymer flooding surfactant-polymer system further enhances oil recovery experiment research. Considering many factors , such as which effect flooding efficiency of the polymer-surfactant system ,surfactant concentration, polymer concentration, polymer molecular weight and slug size of the binary compound system ,and compares flooding efficiency of polymer-surfactant system , ternary compound system and the functional polymers , then in the core of binary system of natural oil displacement effect was verified.
The results from paper show that oil recovery efficiency of binary compound flooding increases with surfactant concentration of the binary system, increases with polymer concentration of the dual system, the main slug size increases, etc. This research and project provides technical reserves for daqing oilfield on further enhance oil recovery after polymer flooding, and is the significance of daqing oilfield sustainable development.
引文
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[13]郭尚平,田根林,王芳,等.聚合物驱后进一步提高采收率的四次采油问题[J].石油学报,1997,18(4):49-53.
[14]李爱芬,陈辉,陶军,等.聚合物驱后期阳离子堵聚可行性研究[J].石油大学学报(自然科学版),2003,27(1):45-48.
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[16]赵福麟,王业飞,戴彩丽,等1聚合物驱后提高采收率技术研究[J]1中国石油大学学报,2006,30(1):862891.
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[38]Lim Leonard.Increased Rate of EOR Brightens Outlook[J].Oil and Gas J.(Apr.1986):71-101.
[39]Meyers,J,Pitts,M.J.and Wyatt,K.Alkaline-surfactant-polymer of the west kiehl Unit[J].SPE/DOE,1992(24144):423-435.
[40]GaoShutang,LiHuabin,YangZhenyu.Alkaline/surfactant/polymer pilot performance of the west central saertu,daqing Oil field[J].SPE Reservoir Engineering,1996(8):181-188.
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[42]李华斌,罗平亚,郑焰等.大庆油田缔合聚合物/碱/表面活性剂三元复合驱油提高采收率研究[J].四川大学学报:工程科学版,2001,33(4):85-89.
[43]刘奕,杨清彦等.三元复合驱机理研究[R].“九五”国家重点科技攻关项目专题技术总结报告,1999,8.
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[2]Stahl G A,Schulz D N著,岳青山译.采油用水溶性聚合物[M].北京:石油工业出版社,1992.26-32.
[3]王德民,程杰成,吴军政等.聚合物驱油技术在大庆油田的应用[J].石油学报,2005,26(1):74-78.
[4]邵振波,李洁.大庆油田二类油层注聚对象的确定及层系组合研究[J].大庆石油地质与开发,2004.23(1):52-55.
[5]赵福麟.EOR原理.北京:石油大学出版社[M],2001年出版.66-67.
[6]夏慧芬.粘弹性聚合物溶液的渗流理论及应用[M].北京:石油工业出版社,2002年出版.133-151.
[7]王克亮.改善聚合物驱油技术研究.北京:石油工业出版社[M],1997年出版.13-15.
[8]Tewett.R.L.Polymer Flooding-A Carreent AppraisaI.J.P.T.[J],June.1970:675-684.
[9]吴文祥,刘洋.聚合物驱后岩心孔隙结构变化特性研究.油田化学[J],2002,19(3):253-256.
[10]宋考平,杨钊,舒志华等.聚合物驱剩余油微观分布的影响因素[J].大庆石油学院报,2004,28(2):25-27.
[11]王凤兰,王天智,李丽娟.萨中地区聚合物驱前后密闭取心井驱油效果及剩余油分析[J].大庆石油地质与开发,2004,23(2):59-60.
[12]卢祥国,王凤兰,包亚臣.聚合物驱后三元复合驱油效果评价[J].油田化学,2000,17(2):159-163.
[13]郭尚平,田根林,王芳,等.聚合物驱后进一步提高采收率的四次采油问题[J].石油学报,1997,18(4):49-53.
[14]李爱芬,陈辉,陶军,等.聚合物驱后期阳离子堵聚可行性研究[J].石油大学学报(自然科学版),2003,27(1):45-48.
[15]刘晔,石梅.聚合物驱后利用微生物进一步提高采收率的可行性[J].大庆石油地质与开发,2004,23(2):56-58.
[16]赵福麟,王业飞,戴彩丽,等1聚合物驱后提高采收率技术研究[J]1中国石油大学学报,2006,30(1):862891.
[17]W.T.Ostertloh and M.J.Janter Jr.Texaco Inc.Effects of Gas and Liquid Velocity on steady-State Foam Flow at High Temperature[J].SPE/DOE24179,1992:237-248.
[18]R.D.Sydansk.Marathon oilco.Polymer-Enhanced Foam propagation Through High-permeability sand pocks[J].SPE25175,1993:245-254.
[19]孙尚如,何先华,邬侠,等聚合物驱后剩余油分布核磁成像实验研究[J]大庆石油地质与开发,2003,22(4):61:63.
[20]王景良.三元复合驱用石油磺酸盐表面活性剂研究进展[J].国外油田工程.2000(12):1-5.
[21]Moritis G.New technology,improved economics boost EOR hopes[J].Oil and Gas J,1996(Aprl5):39-61.
[22]刘恒.大庆油田聚合物驱油方法研究现状与展望.石油勘探与开发.1995年,第一期.
[23]侯吉瑞,吴文祥.化学驱原理与应用.北京:石油工业出版社.1998.
[24]夏惠芬,王德民,刘中春,杨清彦.粘弹性聚合物溶液提高微观驱油效率的机理研究,石油学报,2001.7.
[25]Wang Demin,Cheng Jiecheng,et al.Viscous-elastic Polymer can increase micro scale displacement efficiency in cores[C].SPE63227,2000:1-10.
[26]Clark S R,Pitts M J.Design and application of an alkaline-surfac-rant-polymer recovery system to the west Kiehl Field[Z].SPE17538,1988.
[27]Cheng,K.H,:Chemieal Consumption During Alkaline Flooding:A comparative,Paper SPE14944 Presented at the1986SPE/DOE,Tulsa.APril20-23.
[28]Nelson,R.C.et al:Cosurfactant-enhanced Alkaline flooding,PaPer SPE12672Presented at the 1984SPE/DOE SymPosium on Enhaneed Oil Reeovery,Tulsa,APril 15-16.
[29]赵福麟.采油化学[M].石油大学出版社,1989.1-33.
[30](美)L.W.拉生.化学和热力采油工艺与原理[M].山东科学技术出版社,1992.57.
[31]朱友益,沈平平.三次采油复合驱用表面活性剂合成性能及应用[M].北京:石油工业出版社,2002.
[32]张景存.三次采油[M].北京:石油工业出版社,1995.39-46.
[33]吴文祥,张洪亮,侯吉瑞等.ASP三元复合体系/大庆原油间的动态界面张力特性[J].大庆石油学院学报,1995,19(1):119-122.
[34]张国印,伍晓林等.三次采油用烷基苯磺酸盐类表面活性剂研究[J].大庆石油地质与开发,2001,2(2),26-28.
[35]E.H.Lucassen-Reynders著,朱步瑶等译.阴离子表面活性剂-表面活性剂作 用的物理化学[M].北京:轻工业出版社,1988年.213-255.
[36]孙长明等.物理化学渗流方程[J].大庆石油地质与开发,1986,5(2):47-59.
[37]李干佐,沈强,郑立强.新型驱油用表面活性剂天然混合羧酸盐[J].油田化学,1999,19(Ⅰ):57.
[38]Lim Leonard.Increased Rate of EOR Brightens Outlook[J].Oil and Gas J.(Apr.1986):71-101.
[39]Meyers,J,Pitts,M.J.and Wyatt,K.Alkaline-surfactant-polymer of the west kiehl Unit[J].SPE/DOE,1992(24144):423-435.
[40]GaoShutang,LiHuabin,YangZhenyu.Alkaline/surfactant/polymer pilot performance of the west central saertu,daqing Oil field[J].SPE Reservoir Engineering,1996(8):181-188.
[41]李华斌,高树棠.大庆油田三元复合驱先导性矿场试验研究[M].大庆石油管理局,1996.96-104.
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