聚驱后井网调整二元复合驱可行性研究
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摘要
聚/表二元复合驱是聚驱后一项重要的进一步提高采收率技术。然而聚驱后油藏非均质更加突出,剩余油分布更加零散,单一采用二元复合驱技术提高采收率潜力有限。井网调整结合二元复合驱技术,可进一步扩大波及体积、提高驱油效率,因此,研究应用井网调整二元复合驱技术,进一步挖掘聚驱后剩余油,具有重要的意义。
本文在深入研究聚/表二元复合驱驱油机理的基础上,综合考虑了聚合物和表面活性剂驱油的增粘、吸附、扩散、渗透率下降、降低残余油饱和度等机理,建立了聚/表二元复合驱数学模型。在与商业化软件eclipse对比验证的基础上,应用所建立模型开展了聚驱后二元复合驱适应性研究,评价了聚驱后二元复合驱的井网和油藏适应性。研究了化学剂性质参数(最大渗透率下降系数、可及孔隙体积系数、吸附、界面张力等)和开发参数(注入时机、用量、注入浓度浓度、注入速度等)对聚驱后二元复合驱开发效果的影响,并通过多元方差分析方法分析了各因素及交互作用对开发效果的影响次序。
利用低界面张力下相对渗透率曲线的处理方法,推导了低界面张力下的水相相对渗透率计算公式。从流度设计的基本思想出发,结合聚合物的描述方法,建立了复合驱流度设计模型。分析了影响流度控制最小聚合物浓度的的影响因素。借助正交试验设计,拟合得出了二元复合驱注入能力模型。按照投入产出原理,建立了井网调整二元复合驱可行性评价模型,分析了影响井网调整二元复合驱可行性的因素。
应用孤岛油田Ng3实际资料,计算得出了流度控制的聚合物浓度界限和开展聚驱后井网调整二元复合驱提高采收率下限。结合数值模拟结果,优化了孤岛油田Ng3聚驱后井网调整二元复合驱开发方案,分析了其开发可行性。
Surfactant-polymer flooding is an important enhance oil recovery. technology afterpolymer flooding.However, after polymer flooding reservoir non-homogeneous is more serious, the distribution of remaining oil is more dispersed.The potential for enhanced oil recovery is limited by using surfactant-polymer flooding alone.Combined with wellpattern adjustment, surfactant-polymer flooding can further improve the Swept volume and displacement efficiency. Therefore,it is of great significance to study the well patt-ern adjusting surfactant-polymer flooding technology.
In this paper,based on the In-depth study of surfactant-polymer flooding mechanic-sm,considering the increase of viscosity, inaccessible pore volume,adsorption interfacial tension, etc, a mathematical model of polymer flooding is established. Based on the comparation and verification ,using the model which is built, the well pattern and res-ervoir adaptability of surfactant-polymer flooding after polymer flooding is studied.Theeffects of chemical character parameters (the maximum permeability reduction factor , inaccessible pore volume, adsorption,interfacial tension, etc.)and development parameter-rs(injection timing, slug size, concentration, injection rate, etc) on the surfactant-polym-er flooding after polymer flooding are studied. By multivariate analysis, the affectting order of the factors and their interaction on development effectiveness are analyzed.
Utilizing the treatment of relative permeability curves under low interfacial tensi- on,The formula for calculating the aqueous-phase relative permeability was derivated under low interfacial tension. Based on the basic idea of mobility designs and descrip-tions of polymer, a mobility design model for combination flooding was established.T-he factord that affect the minimum polymer concentration which meet the requirements of cont-roling the mobility are analyzed. With the help of orthogonal design, a injection capabi-lity model is fitted .Base on input-output principle, a evaluation model for feasibility of well pattern adjusting surfactant-polymer flooding is established. The factor that aff- ect the feasibility of well pattern adjusting surfactant-polymer flooding are analyzed.
Based on the actual data of Ng3 unit of GuDao oilfield ,the circumscription of polymer concentration which control the mobility and recovery efficiency are calculated .Combined with the results of numerical simulation ,the development plan for well pattern adjusting surfactant-polymer flooding after polymer flooding is optimized, the feasibility of its development is analyzed.
本文在深入研究聚/表二元复合驱驱油机理的基础上,综合考虑了聚合物和表面活性剂驱油的增粘、吸附、扩散、渗透率下降、降低残余油饱和度等机理,建立了聚/表二元复合驱数学模型。在与商业化软件eclipse对比验证的基础上,应用所建立模型开展了聚驱后二元复合驱适应性研究,评价了聚驱后二元复合驱的井网和油藏适应性。研究了化学剂性质参数(最大渗透率下降系数、可及孔隙体积系数、吸附、界面张力等)和开发参数(注入时机、用量、注入浓度浓度、注入速度等)对聚驱后二元复合驱开发效果的影响,并通过多元方差分析方法分析了各因素及交互作用对开发效果的影响次序。
利用低界面张力下相对渗透率曲线的处理方法,推导了低界面张力下的水相相对渗透率计算公式。从流度设计的基本思想出发,结合聚合物的描述方法,建立了复合驱流度设计模型。分析了影响流度控制最小聚合物浓度的的影响因素。借助正交试验设计,拟合得出了二元复合驱注入能力模型。按照投入产出原理,建立了井网调整二元复合驱可行性评价模型,分析了影响井网调整二元复合驱可行性的因素。
应用孤岛油田Ng3实际资料,计算得出了流度控制的聚合物浓度界限和开展聚驱后井网调整二元复合驱提高采收率下限。结合数值模拟结果,优化了孤岛油田Ng3聚驱后井网调整二元复合驱开发方案,分析了其开发可行性。
Surfactant-polymer flooding is an important enhance oil recovery. technology afterpolymer flooding.However, after polymer flooding reservoir non-homogeneous is more serious, the distribution of remaining oil is more dispersed.The potential for enhanced oil recovery is limited by using surfactant-polymer flooding alone.Combined with wellpattern adjustment, surfactant-polymer flooding can further improve the Swept volume and displacement efficiency. Therefore,it is of great significance to study the well patt-ern adjusting surfactant-polymer flooding technology.
In this paper,based on the In-depth study of surfactant-polymer flooding mechanic-sm,considering the increase of viscosity, inaccessible pore volume,adsorption interfacial tension, etc, a mathematical model of polymer flooding is established. Based on the comparation and verification ,using the model which is built, the well pattern and res-ervoir adaptability of surfactant-polymer flooding after polymer flooding is studied.Theeffects of chemical character parameters (the maximum permeability reduction factor , inaccessible pore volume, adsorption,interfacial tension, etc.)and development parameter-rs(injection timing, slug size, concentration, injection rate, etc) on the surfactant-polym-er flooding after polymer flooding are studied. By multivariate analysis, the affectting order of the factors and their interaction on development effectiveness are analyzed.
Utilizing the treatment of relative permeability curves under low interfacial tensi- on,The formula for calculating the aqueous-phase relative permeability was derivated under low interfacial tension. Based on the basic idea of mobility designs and descrip-tions of polymer, a mobility design model for combination flooding was established.T-he factord that affect the minimum polymer concentration which meet the requirements of cont-roling the mobility are analyzed. With the help of orthogonal design, a injection capabi-lity model is fitted .Base on input-output principle, a evaluation model for feasibility of well pattern adjusting surfactant-polymer flooding is established. The factor that aff- ect the feasibility of well pattern adjusting surfactant-polymer flooding are analyzed.
Based on the actual data of Ng3 unit of GuDao oilfield ,the circumscription of polymer concentration which control the mobility and recovery efficiency are calculated .Combined with the results of numerical simulation ,the development plan for well pattern adjusting surfactant-polymer flooding after polymer flooding is optimized, the feasibility of its development is analyzed.
引文
[1]王友启.胜利油田聚合物驱后二元复合驱油体系优化[J].石油钻探技术,2007,5(35):101-103
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[3]彭昱强,涂彬,魏俊之.油气田开发井网研究综述[J].大庆石油地质与开发,2002,6(21):22-25
[4]齐与峰,砂岩油田注水开发合理井网研究中的几个理论问题[J].石油学报,1990,4(11):51-60
[5]郎兆新,张积毕等.水平井与直井联合开采问题-五点法面积井网[J].石油大学学报,1993,14(6):103-106
[6]曲得斌,葛家理,王德民.水平井与直井联合面积布井的开发理论研究(一)-一般的五点面积井网[J],石油勘探与开发,1995,1(22):35-37
[7]曲得斌,葛家理,王德民.水平井与直井联合面积布井的开发理论研究(二)-七点法面积井网[J],1995,2(22):47-50
[8]武兵厂,姚军.水平井与垂直井联合井网波及系数研究[J].石油学报,2006,4(27):85-88
[9]许心伟.稠油油藏蒸汽驱合理井网密度研究[J].石油勘探与开发,1998,4(25):45-48
[10]李阳.低渗透油藏矢量井网设计与整体压裂优化研究[J].石油大学学报(自然科学版),2005,6(29):54-46
[11]李松泉.低渗透油田开发的合理井网[J].石油学报,1998,3(19):52-55
[12]刘春枚.水驱开发后期井网密度的确定[J].新疆石油地质,2008,5(29):616-618
[13]于乐香.特高含水期油田的合理经济极限井网密度研究[J].新疆石油地质,2001,2(22):142-143
[14]么世椿.大庆油田三元复合驱布井方式研究[J].大庆石油地质与开发,2001,1(20):25-29
[15]李俊键.化学驱合理井网密度的计算方法-以正方形井网为例[J].2008,3(15):56-61
[16]杨瑞敏,张秀琼.高温高盐油藏二元复合驱体系配方筛选[J].河南石油,2004,4(18):53-55
[17]李华斌.高温高盐油藏S/P二元复合驱室内实验研究[J].油田化学,2005,4(22):336-339
[18]牛瑞霞,程杰成,龙彪等.二元无碱驱油体系的室内研究与评价[J].新疆石油地质,2006,6(27):732-734
[19]张爱美.孤东油田七区西南二元复合驱油先导试验效果及动态特点[J].油气地质与采收率,2007-5(14):66-71
[20]于丽.聚驱后SDCM-1/聚合物二元复合体系提高采收率研究[J].油田化学,2007,4(24):355-359
[21]夏惠芬,王刚,马文国等.无碱二元体系的黏弹性和界面张力对水驱残余油的作用[J].石油学报,2008,1(29):106-110
[22]王正茂,廖广志.大庆油田复合驱油技术适应性评价方法研究[J].石油学报,2008,3(29):396-398.
[23]李淑霞,谷建伟.油藏数值模拟基础[M] .中国石油大学出版社,东营2009:1-2
[24]邵振波,陈国,孙刚.新型聚合物驱油数学模型[J].石油学报,2008,3(29):410-414
[25]刘玉章.聚合物驱提高采收率技术[M].石油工业出版社,北京,2005:110-112
[26] D. Camilleri , S. ENgelsen. Descryption of an improved compositional cellar/polymer simulator . SPE23967,1987,427-431
[27]A. Gupta ,G.A.Pape,a symmetric , positive definite formulation of a three-dimensional micellar/polymer simulator SPE13504:1986,622-632
[28] A, john , C. Han. a new generation chemical flooding simulator ,SPE89436, 1989:206-216
[29]陈国,赵刚,马远乐.粘弹性聚合物驱油的数学模型[J].清华大学学报(自然科学版),2006,6(46):882-885
[30] meter, D. M. and bird, R. B .tube flow of non-newtonian polymer solutions:part I laminar flow and rheological models, AICHE Journal, 1964, 6(10):1143-1150
[31]侯健,王玉斗,陈月明.聚合物驱数学模型的流线方法求解[J].水动力学研究与进展,2002.3(17):333-350
[32]赵福麟.化学原理Ⅱ[M].石油大学出版社,东营,2002:86-92
[33]张宏民,程林松,梁玲.稠油油藏蒸汽表面活性剂复合驱数值模拟研究[J].石油大学学报(自然科学版),2000,5(24):39-42
[34] Jude O Amaefule, Lymern L. Handy. The effect of interfacial tensions on relative oil/water permeabilities of consolidated porous media[J]. SPE9783
[35] Ioannis Chatzis, Norman R. Morrow. Correlation of capillary number relationships for sandstone[J]. SPE10114,1984
[36]袁益让,羊丹平,戚连庆等.聚合物驱应用软件算法研究冈秦麟[A].化学驱油论文集[C].石油工业出版社,北京,1998:246 253
[37]姜瑞忠.聚合物及交联聚合物驱油藏数值模拟一体化分析系研制[D].西南石油学院,2002:47-48
[38]姜汉桥,姚军.油藏工程原理与方法[M].中国石油大学出版社,东营,2006:25-37
[39]秦积舜,李爱芬.油层物理学[M],中国石油大学出版社,东营,2006:134-144
[40]方萍,何延.试验设计与统计[M].浙江大学出版社,2003,65-80
[41]何少华,文竹青.试验设计与数据处理[M],国防科技大学出版社,长沙,2002:24-100
[42]王黎明,陈颖,杨楠.应用回归分析[M],复旦大学出版社,上海,2008:44-93.
[43]余锦华,杨维权.多元统计分析与应用[M].中山大学出版社,广州,2005:36-45
[44]李静萍,谢邦昌.多元统计分析方法与应用[M].中国人民大学出版社,北京2005,87-131
[45]胡博仲,刘恒,李林.聚合物驱采油工程[M].石油工业出版社,1997:15-16
[46]杨承志.化学驱提高石油采收率.石油工业出版社[M],北京,1999:152-153
[2]吕鑫,张健,姜伟.聚合物/表面活性剂二元复合驱研究进展[J].西南石油大学学报(自然科学版),2008,3(30):127-130
[3]彭昱强,涂彬,魏俊之.油气田开发井网研究综述[J].大庆石油地质与开发,2002,6(21):22-25
[4]齐与峰,砂岩油田注水开发合理井网研究中的几个理论问题[J].石油学报,1990,4(11):51-60
[5]郎兆新,张积毕等.水平井与直井联合开采问题-五点法面积井网[J].石油大学学报,1993,14(6):103-106
[6]曲得斌,葛家理,王德民.水平井与直井联合面积布井的开发理论研究(一)-一般的五点面积井网[J],石油勘探与开发,1995,1(22):35-37
[7]曲得斌,葛家理,王德民.水平井与直井联合面积布井的开发理论研究(二)-七点法面积井网[J],1995,2(22):47-50
[8]武兵厂,姚军.水平井与垂直井联合井网波及系数研究[J].石油学报,2006,4(27):85-88
[9]许心伟.稠油油藏蒸汽驱合理井网密度研究[J].石油勘探与开发,1998,4(25):45-48
[10]李阳.低渗透油藏矢量井网设计与整体压裂优化研究[J].石油大学学报(自然科学版),2005,6(29):54-46
[11]李松泉.低渗透油田开发的合理井网[J].石油学报,1998,3(19):52-55
[12]刘春枚.水驱开发后期井网密度的确定[J].新疆石油地质,2008,5(29):616-618
[13]于乐香.特高含水期油田的合理经济极限井网密度研究[J].新疆石油地质,2001,2(22):142-143
[14]么世椿.大庆油田三元复合驱布井方式研究[J].大庆石油地质与开发,2001,1(20):25-29
[15]李俊键.化学驱合理井网密度的计算方法-以正方形井网为例[J].2008,3(15):56-61
[16]杨瑞敏,张秀琼.高温高盐油藏二元复合驱体系配方筛选[J].河南石油,2004,4(18):53-55
[17]李华斌.高温高盐油藏S/P二元复合驱室内实验研究[J].油田化学,2005,4(22):336-339
[18]牛瑞霞,程杰成,龙彪等.二元无碱驱油体系的室内研究与评价[J].新疆石油地质,2006,6(27):732-734
[19]张爱美.孤东油田七区西南二元复合驱油先导试验效果及动态特点[J].油气地质与采收率,2007-5(14):66-71
[20]于丽.聚驱后SDCM-1/聚合物二元复合体系提高采收率研究[J].油田化学,2007,4(24):355-359
[21]夏惠芬,王刚,马文国等.无碱二元体系的黏弹性和界面张力对水驱残余油的作用[J].石油学报,2008,1(29):106-110
[22]王正茂,廖广志.大庆油田复合驱油技术适应性评价方法研究[J].石油学报,2008,3(29):396-398.
[23]李淑霞,谷建伟.油藏数值模拟基础[M] .中国石油大学出版社,东营2009:1-2
[24]邵振波,陈国,孙刚.新型聚合物驱油数学模型[J].石油学报,2008,3(29):410-414
[25]刘玉章.聚合物驱提高采收率技术[M].石油工业出版社,北京,2005:110-112
[26] D. Camilleri , S. ENgelsen. Descryption of an improved compositional cellar/polymer simulator . SPE23967,1987,427-431
[27]A. Gupta ,G.A.Pape,a symmetric , positive definite formulation of a three-dimensional micellar/polymer simulator SPE13504:1986,622-632
[28] A, john , C. Han. a new generation chemical flooding simulator ,SPE89436, 1989:206-216
[29]陈国,赵刚,马远乐.粘弹性聚合物驱油的数学模型[J].清华大学学报(自然科学版),2006,6(46):882-885
[30] meter, D. M. and bird, R. B .tube flow of non-newtonian polymer solutions:part I laminar flow and rheological models, AICHE Journal, 1964, 6(10):1143-1150
[31]侯健,王玉斗,陈月明.聚合物驱数学模型的流线方法求解[J].水动力学研究与进展,2002.3(17):333-350
[32]赵福麟.化学原理Ⅱ[M].石油大学出版社,东营,2002:86-92
[33]张宏民,程林松,梁玲.稠油油藏蒸汽表面活性剂复合驱数值模拟研究[J].石油大学学报(自然科学版),2000,5(24):39-42
[34] Jude O Amaefule, Lymern L. Handy. The effect of interfacial tensions on relative oil/water permeabilities of consolidated porous media[J]. SPE9783
[35] Ioannis Chatzis, Norman R. Morrow. Correlation of capillary number relationships for sandstone[J]. SPE10114,1984
[36]袁益让,羊丹平,戚连庆等.聚合物驱应用软件算法研究冈秦麟[A].化学驱油论文集[C].石油工业出版社,北京,1998:246 253
[37]姜瑞忠.聚合物及交联聚合物驱油藏数值模拟一体化分析系研制[D].西南石油学院,2002:47-48
[38]姜汉桥,姚军.油藏工程原理与方法[M].中国石油大学出版社,东营,2006:25-37
[39]秦积舜,李爱芬.油层物理学[M],中国石油大学出版社,东营,2006:134-144
[40]方萍,何延.试验设计与统计[M].浙江大学出版社,2003,65-80
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