聚驱后二元体系提高采收率可行性研究
|
摘要
室内实验结果表明,聚驱后地层中仍残留大量剩余油,如何充分挖潜残留在地下的原油是当前亟需解决的问题。聚驱后利用三元复合驱虽然能够大幅度地提高原油采收率,但是碱的使用不仅降低了聚合物的粘度,同时还会引起地层粘土分散、运移、地层渗透率下降、油层及井底结垢、生产井产液能力降低、监泵周期缩短、采出液破乳脱水困难等一系列问题。
针对三元复合驱的上述问题,本文模拟萨南开发区储层特点研制了室内人造物理模型,探索聚驱后利用无碱聚合物/表面活性剂二元复合体系进一步提高采收率幅度的可行性。
本文综合现场和室内经验初步确定二元复合体系的配方,通过性能评价实验对二元体系配方进行优化。利用优化后的二元体系开展水驱、一次聚驱和二元复合驱实验研究。通过静态、动态驱油实验对非离子表面活性剂和新型表面活性剂二元复合体系的粘度、界面张力的稳定性以及驱油效果进行评价,同时通过均质和非均质岩心实验对比二元体系与三元体系的驱油效果,另外开展室内物理模拟实验对二元体系在大平面模型流线上的分布及吸附滞留规律进行系统的研究。实验结果表明:该二元体系与所选现场区块原油的界面张力在较宽的活性剂浓度范围内均能够达到10-3mN/m数量级;体系的粘度和界面张力的稳定性较好;室内物理模拟实验结果表明,聚驱后在人造均质和非均质岩心中注入该二元体系均可以提高采收率10%左右,且在非均质岩心中二元体系驱油效果要好于三元体系。
Laboratory experimental results show that after polymer flooding,there is still a large number of the remaining residual oil in the formation, how to make the best potential residue of crude oil is an urgent need to resolve. Although ASP flooding used after polymer flooding can be significantly enhanced oil recovery, the use of alkali, not only reduces the viscosity of the polymer solution, also causes series of problems such as clay dispersion and migration of formation, permeability decreasing,oil and bottom scale, decreasing of liquid-producing capacity and pump inspection period, difficult of produced liquid demulsification and dehydration.
For the above-mentioned issues caused by ASP flooding,feasibility of SP flooding after polymer flooding to enhancing oil recovery is studied at the base of some laboratory modelling experiments on oil displacement in artificial cores in this paper.
In this paper, the initial formula of binary composite system which is identified at the base of laboratory and field tests.,is optimized through performance evaluation experiments. Some laboratory modelling experiments on oil displacement based on optimized SP binary composite system and evaluations on viscosity,the stability of interfacial tension and oil recovery of SP binary composite system are conducted. are conducted,and at the same time the oil recovery comparison of SP flooding and ASP flooding through oil displacement experiments on homogeneous cores and heterogeneous core. Besides,streamline distribution of SP flooding and.SP distributing law are studied through oil displacement experiments carried out on physical plane model.The following are studied:the interfacial tension between oil and SP solution can reach 10-3 mN/m in a high surfactant concentration range;viscosity and interfacial tension of SP the stability of binary composite system is stable;After polymer flooding with the SP slug drive going on again thereafter,the average enhanced recovery is about 10%,seen from the oil recovery regardless of homogeneous core or heterogeneous core,and oil recovery is higher than that of ASP flooding
针对三元复合驱的上述问题,本文模拟萨南开发区储层特点研制了室内人造物理模型,探索聚驱后利用无碱聚合物/表面活性剂二元复合体系进一步提高采收率幅度的可行性。
本文综合现场和室内经验初步确定二元复合体系的配方,通过性能评价实验对二元体系配方进行优化。利用优化后的二元体系开展水驱、一次聚驱和二元复合驱实验研究。通过静态、动态驱油实验对非离子表面活性剂和新型表面活性剂二元复合体系的粘度、界面张力的稳定性以及驱油效果进行评价,同时通过均质和非均质岩心实验对比二元体系与三元体系的驱油效果,另外开展室内物理模拟实验对二元体系在大平面模型流线上的分布及吸附滞留规律进行系统的研究。实验结果表明:该二元体系与所选现场区块原油的界面张力在较宽的活性剂浓度范围内均能够达到10-3mN/m数量级;体系的粘度和界面张力的稳定性较好;室内物理模拟实验结果表明,聚驱后在人造均质和非均质岩心中注入该二元体系均可以提高采收率10%左右,且在非均质岩心中二元体系驱油效果要好于三元体系。
Laboratory experimental results show that after polymer flooding,there is still a large number of the remaining residual oil in the formation, how to make the best potential residue of crude oil is an urgent need to resolve. Although ASP flooding used after polymer flooding can be significantly enhanced oil recovery, the use of alkali, not only reduces the viscosity of the polymer solution, also causes series of problems such as clay dispersion and migration of formation, permeability decreasing,oil and bottom scale, decreasing of liquid-producing capacity and pump inspection period, difficult of produced liquid demulsification and dehydration.
For the above-mentioned issues caused by ASP flooding,feasibility of SP flooding after polymer flooding to enhancing oil recovery is studied at the base of some laboratory modelling experiments on oil displacement in artificial cores in this paper.
In this paper, the initial formula of binary composite system which is identified at the base of laboratory and field tests.,is optimized through performance evaluation experiments. Some laboratory modelling experiments on oil displacement based on optimized SP binary composite system and evaluations on viscosity,the stability of interfacial tension and oil recovery of SP binary composite system are conducted. are conducted,and at the same time the oil recovery comparison of SP flooding and ASP flooding through oil displacement experiments on homogeneous cores and heterogeneous core. Besides,streamline distribution of SP flooding and.SP distributing law are studied through oil displacement experiments carried out on physical plane model.The following are studied:the interfacial tension between oil and SP solution can reach 10-3 mN/m in a high surfactant concentration range;viscosity and interfacial tension of SP the stability of binary composite system is stable;After polymer flooding with the SP slug drive going on again thereafter,the average enhanced recovery is about 10%,seen from the oil recovery regardless of homogeneous core or heterogeneous core,and oil recovery is higher than that of ASP flooding
引文
[1]葛广章,王勇进,王彦玲,等.聚合物驱及相关化学驱进展[J]油田化学,2001,18(3): 282-284.
[2]MoritisG.Newtechnology,imProved economics boost EOR hoPes[J].oil and GaSJ,1996 (Aprl5):39-61.
[3]陈淦.发展三次采油的战略意义及政策要求[J].油气采收率技术,1997,4(4):2-4.
[4]叶仲斌等编.提高采收率原理[M].北京石油工业出版社,2000.35-38.
[5]李干佐,翟利民,郑立强,等.我国三次采油进展[J].日用化学品科学,1999年8月增刊:1-9.
[6]杨振宇,陈广宇.国内外复合驱技术研究现状及发展方向[J].大庆石油地质与开发,2004 ,23(5):49-96.
[7]沈平平,俞稼铺.大幅度提高原油采收率的基础研究[M].北京石油工业出版社,2001 , 74-79.
[8]刘东升.聚合物驱注采井节点分析方法及其应用[M].北京石油工业出版社,2001. 1-10.
[9]侯吉瑞.化学驱原理与应用[M].北京石油工业出版社,1998.64-71.
[10]康万利.大庆油田三元复合驱化学剂作用机理研究[M].北京石油工业出版社,2001 . 4 5-53.
[11]李柏林,程杰成.二元无碱驱油体系研究[J].油气田地面工程,2004,23 (6) : 16.
[12]吴文祥,张玉丰,胡锦强,刑德琪.聚合物及表面活性剂二元复合体系驱油物理模拟实验[J].大庆石油学院学报,2005,29 (6):98-100.
[13]李孟涛,杨孝君,刘先贵.无碱二元复合体系驱油试验研究[J].石油钻采工艺,2004,26 (5) :73-76.
[14]Gaoshutang,LIHuabin,YangZhenyu.Alkaline/Surfactant/Polymer pilot performance of the west central saertu,daqing oilfield[J].SPE Reservoir Engineering,1996(8):181-188.
[15]周润才.表面活性剂/聚合物驱油的基本原理[J].国外油气田工程,1995:9-12.
[16]C.Z.Yang.Adjustment of Surfactant/Polymer Interaction Surfactant/Polymer Flooding Wi ht Polyelecortletys[J].SPE14931:459-462.
[17]S.M.Holley,J.L.Caylas.Design,operation and Evaluation of a Surfactant/polymer Field PilotTest [J].SPE 20232:463-68.
[18]C.S.Chivu,GE.Ketlerllats.Polymer/Surfactant TransPort in Micellar Flooding[J].SPE 93 54 : 112 -128.
[19]翁蕊,杨普华,罗幼松.阴离子/非离子表面活性剂复配体系的色谱分离研究[J].油田化学,2003,20(2),163-66.
[20]廖广志,王德民.化学复合驱原理及应用[M].石油工业出版社,1999.88-92.
[21]杨普华,杨承志译.化学驱提高石油采收率[M].石油工业出版社,1988.56-65.
[22]赵福麟.采油化学[M].石油大学出版社,1989.1-33.
[23]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.
[24]DelamaldeE.Daqing oil Field:The success of Two pilot Initiates First Extention of Polymer injection in a Jt Field[J].SPE/DOE27819,1994:541-548.
[25]丁涛,丁伟,罗洪军.油田化学剂[M].石油工业出版社,2002. 28-32.
[26]张景存.三次采油[M].北京石油工业出版社,1995.90-100.
[27]MunganN.: Enhanced oil Reeovery Using Water as a Driving Fluid-Part4: Fundamenials of Alkaline Flooding,World oil (June1981)
[29]胡博仲,聚合物驱油工程[M],石油工业出版社,1997年1月第一版,PP,l-60
[30](美)W.利特马恩,聚合物驱油[M],杨普华、杨育森,石油工业出版社,1991年8月第一版,PP,8-16.
[31]姜继水、宋吉水,提高石油采收率技术[M],石油工业出版社,1999年8月第一版,PP,46-48.
[32]韩冬、沈平平,表面活性剂驱油原理及应用[M],石油工业出版社,2001年6月第一版,P1.
[33]张继芬,提高石油采收率基础[M],石油工业出版社,1997年第一版,PP,98-1.
[34] (美)L.W.莱克,提高石油采收率的科学基础[M],李宗田,石油工业出版社,1992年12月第一版,PP,142-144.
[35]李千佐、郭荣,微乳液理论及其应用[M],石油工业出版社,1995年第一版,PP,4-24.
[36] MohammandR.etal,Quantifieation and optimization of Viseoelastie of Polymer solutions for EOR,SPE/DOE24254,SPE/DOE 8th symposium on EOR,Tula,April 1992.
[37] HirasakiG.H,PoPeG.A.,Analysis of factors influeneing the mobility and adsorptionin the flow of polymer solutions through popous media , SPE4026 , SPE47th AnnulFail Meeting,sanAntonio,oct1972.
[38]张玉亮等,多孔介质中聚合物溶液粘弹性效应[J],大庆石油学院学报1994(2).
[39]汪伟英,孔隙介质中聚合物溶液的粘弹性及流变性[J],江汉石油学院学报,1994(2).
[40]卢祥国、高振环等,聚合物驱油之后剩余油分布规律研究[J],石油学报,第17卷,第4期.
[41]王启民,郑兴范,林影.非均质多层砂岩油田高含水期剩余油分布[J].大庆石油地质与开发,1996 , 15 (2) :19-22.
[42]李宜强,隋新光,李洁,杨清彦,王志华.纵向非均质大型平面模型聚合物驱油波及系数室内实验研究[J].石油学报,2005,26卷第5期.
[43]熊生春,王业飞,何英等.孤岛油田聚合物驱后提高采收率实验研究.断块油气田[J],2005,12(3):38-40.
[44]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,l8(4):49-53.
[2]MoritisG.Newtechnology,imProved economics boost EOR hoPes[J].oil and GaSJ,1996 (Aprl5):39-61.
[3]陈淦.发展三次采油的战略意义及政策要求[J].油气采收率技术,1997,4(4):2-4.
[4]叶仲斌等编.提高采收率原理[M].北京石油工业出版社,2000.35-38.
[5]李干佐,翟利民,郑立强,等.我国三次采油进展[J].日用化学品科学,1999年8月增刊:1-9.
[6]杨振宇,陈广宇.国内外复合驱技术研究现状及发展方向[J].大庆石油地质与开发,2004 ,23(5):49-96.
[7]沈平平,俞稼铺.大幅度提高原油采收率的基础研究[M].北京石油工业出版社,2001 , 74-79.
[8]刘东升.聚合物驱注采井节点分析方法及其应用[M].北京石油工业出版社,2001. 1-10.
[9]侯吉瑞.化学驱原理与应用[M].北京石油工业出版社,1998.64-71.
[10]康万利.大庆油田三元复合驱化学剂作用机理研究[M].北京石油工业出版社,2001 . 4 5-53.
[11]李柏林,程杰成.二元无碱驱油体系研究[J].油气田地面工程,2004,23 (6) : 16.
[12]吴文祥,张玉丰,胡锦强,刑德琪.聚合物及表面活性剂二元复合体系驱油物理模拟实验[J].大庆石油学院学报,2005,29 (6):98-100.
[13]李孟涛,杨孝君,刘先贵.无碱二元复合体系驱油试验研究[J].石油钻采工艺,2004,26 (5) :73-76.
[14]Gaoshutang,LIHuabin,YangZhenyu.Alkaline/Surfactant/Polymer pilot performance of the west central saertu,daqing oilfield[J].SPE Reservoir Engineering,1996(8):181-188.
[15]周润才.表面活性剂/聚合物驱油的基本原理[J].国外油气田工程,1995:9-12.
[16]C.Z.Yang.Adjustment of Surfactant/Polymer Interaction Surfactant/Polymer Flooding Wi ht Polyelecortletys[J].SPE14931:459-462.
[17]S.M.Holley,J.L.Caylas.Design,operation and Evaluation of a Surfactant/polymer Field PilotTest [J].SPE 20232:463-68.
[18]C.S.Chivu,GE.Ketlerllats.Polymer/Surfactant TransPort in Micellar Flooding[J].SPE 93 54 : 112 -128.
[19]翁蕊,杨普华,罗幼松.阴离子/非离子表面活性剂复配体系的色谱分离研究[J].油田化学,2003,20(2),163-66.
[20]廖广志,王德民.化学复合驱原理及应用[M].石油工业出版社,1999.88-92.
[21]杨普华,杨承志译.化学驱提高石油采收率[M].石油工业出版社,1988.56-65.
[22]赵福麟.采油化学[M].石油大学出版社,1989.1-33.
[23]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.
[24]DelamaldeE.Daqing oil Field:The success of Two pilot Initiates First Extention of Polymer injection in a Jt Field[J].SPE/DOE27819,1994:541-548.
[25]丁涛,丁伟,罗洪军.油田化学剂[M].石油工业出版社,2002. 28-32.
[26]张景存.三次采油[M].北京石油工业出版社,1995.90-100.
[27]MunganN.: Enhanced oil Reeovery Using Water as a Driving Fluid-Part4: Fundamenials of Alkaline Flooding,World oil (June1981)
[29]胡博仲,聚合物驱油工程[M],石油工业出版社,1997年1月第一版,PP,l-60
[30](美)W.利特马恩,聚合物驱油[M],杨普华、杨育森,石油工业出版社,1991年8月第一版,PP,8-16.
[31]姜继水、宋吉水,提高石油采收率技术[M],石油工业出版社,1999年8月第一版,PP,46-48.
[32]韩冬、沈平平,表面活性剂驱油原理及应用[M],石油工业出版社,2001年6月第一版,P1.
[33]张继芬,提高石油采收率基础[M],石油工业出版社,1997年第一版,PP,98-1.
[34] (美)L.W.莱克,提高石油采收率的科学基础[M],李宗田,石油工业出版社,1992年12月第一版,PP,142-144.
[35]李千佐、郭荣,微乳液理论及其应用[M],石油工业出版社,1995年第一版,PP,4-24.
[36] MohammandR.etal,Quantifieation and optimization of Viseoelastie of Polymer solutions for EOR,SPE/DOE24254,SPE/DOE 8th symposium on EOR,Tula,April 1992.
[37] HirasakiG.H,PoPeG.A.,Analysis of factors influeneing the mobility and adsorptionin the flow of polymer solutions through popous media , SPE4026 , SPE47th AnnulFail Meeting,sanAntonio,oct1972.
[38]张玉亮等,多孔介质中聚合物溶液粘弹性效应[J],大庆石油学院学报1994(2).
[39]汪伟英,孔隙介质中聚合物溶液的粘弹性及流变性[J],江汉石油学院学报,1994(2).
[40]卢祥国、高振环等,聚合物驱油之后剩余油分布规律研究[J],石油学报,第17卷,第4期.
[41]王启民,郑兴范,林影.非均质多层砂岩油田高含水期剩余油分布[J].大庆石油地质与开发,1996 , 15 (2) :19-22.
[42]李宜强,隋新光,李洁,杨清彦,王志华.纵向非均质大型平面模型聚合物驱油波及系数室内实验研究[J].石油学报,2005,26卷第5期.
[43]熊生春,王业飞,何英等.孤岛油田聚合物驱后提高采收率实验研究.断块油气田[J],2005,12(3):38-40.
[44]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,l8(4):49-53.
© 2004-2018 中国地质图书馆版权所有 京ICP备05064691号 京公网安备11010802017129号 地址：北京市海淀区学院路29号 邮编：100083 电话：办公室：(+86 10)66554848；文献借阅、咨询服务、科技查新：66554700 |