海上聚合物驱油藏堵塞位置定量表征方法
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摘要
针对海上聚驱油藏注聚区地层堵塞,采油井产液量下降幅度大,产能无法完全释放的问题,运用数值模拟方法,在聚合物驱堵塞机理研究基础上,利用井指数和传导率等效表征地层堵塞,模拟油藏不同位置堵塞情况下油水井的动态响应特征,基于此建立了快速诊断聚驱油藏堵塞位置图版。另外,利用油藏工程方法和试井技术进一步推导了堵塞半径定量预测解析模型。该方法在渤海L油田矿场实践表明:研究成果不仅能定性判断聚驱油藏堵塞位置,且能定量表征堵塞半径的大小,为实施精细解堵提供了理论支持,对海上同类油田起到较好的借鉴作用。
In order to solve the problems of stratum blockage in the area of offshore polymer flooding reservoir, the decrease of fluid production of producing wells and the production capacity that cannot be fully released, the simulation method based on the study of plugging mechanism of polymer flooding was used to equivalently characterize formation plugging by well index and conductivity,and dynamic response characteristics of oil-water wells under reservoir plugging at different locations were then simulated. Based on this method, a rapid diagnostic block location chart for polymer flooding reservoirs was established. In addition, an model for quantitative prediction of plugging radius was further derived by using reservoir engineering method and well testing technology. The application in Bohai L oilfield shows that the result can not only qualitatively judge the plugging location, but also quantitatively characterize the size of plugging radius, which provides strong theoretical support for plugging removal and can be used for reference in similar offshore oilfields.
In order to solve the problems of stratum blockage in the area of offshore polymer flooding reservoir, the decrease of fluid production of producing wells and the production capacity that cannot be fully released, the simulation method based on the study of plugging mechanism of polymer flooding was used to equivalently characterize formation plugging by well index and conductivity,and dynamic response characteristics of oil-water wells under reservoir plugging at different locations were then simulated. Based on this method, a rapid diagnostic block location chart for polymer flooding reservoirs was established. In addition, an model for quantitative prediction of plugging radius was further derived by using reservoir engineering method and well testing technology. The application in Bohai L oilfield shows that the result can not only qualitatively judge the plugging location, but also quantitatively characterize the size of plugging radius, which provides strong theoretical support for plugging removal and can be used for reference in similar offshore oilfields.
引文
[1]周守为,韩明,向问陶,等.渤海油田聚合物驱提高采收率技术研究及应用[J].中国海上油气,2006,18(6):386-389.
[2]张贤松,郑伟,唐恩高,等.海上稠油油藏早期注聚压力与注聚时机研究[J].油气地质与采收率,2013,20(5):68-71.
[3]张贤松,唐恩高,谢晓庆,等.海上油田早期注聚开发特征及注入方式研究[J].石油天然气学报,2013,35(7):123-126.
[4]卢大艳,孟祥海,吴威,等.渤海注聚油田堵塞井堵塞机理分析及复合解堵工艺设计[J].中国海上油气,2016,28(5):98-103.
[5]陈渊,谢建军,赵长喜,等.聚合物驱细分复合解堵技术的研究与应用[J].特种油气藏,2004,11(5):101-104.
[6]郑俊德,张英志,任华,等.注聚合物井堵塞机理分析及解堵剂研究[J].石油勘探与开发,2004,31(6):108-111.
[7]张贤松,孙福街,冯国智,等.渤海稠油油田聚合物驱影响因素研究及现场试验[J].中国海上油气,2007,19(1):30-32.
[8]郑伟林.解堵综合配套技术在孤东油田的应用[J].断块油气田,2006,13(1):70-71.
[9]卢祥国,陈会军,单明涛.大庆油田北二区西部注聚井堵塞原因及预防措施[J].油田化学,2002,19(3):258-259.
[10]张磊,张贵才,葛际江,等.中低渗油藏pH敏感聚合物深部调驱技术[J].特种油气藏,2016,23(1):135-138.
[11]徐昆,赵立强,宋爱丽,等.渤海SZ36-1油田注聚井堵塞原因分析[J].重庆科技学院学报(自然科学版),2010,12(5):35-37.
[12]周万富,赵敏,王鑫,等.注聚井堵塞原因[J].大庆石油学院学报,2004,28(2):40-42.
[13]安高诧.注聚井解堵技术研究及在双河油田的应用[J].石油天然气报,2011,33(6):341-344.
[14]陈元千,阎为格.表皮系数的分解方法[J].断块油气田,2003,10(6):32-35.
[15]康小军,王德有,成绥名,等.表皮系数系统分解方法的应用[J].油气井测试,1992,1(3):51-54.
[16]陈元千.确定井底污染半径的方法[J].石油勘探与开发,1988,5(2):63-71.
[2]张贤松,郑伟,唐恩高,等.海上稠油油藏早期注聚压力与注聚时机研究[J].油气地质与采收率,2013,20(5):68-71.
[3]张贤松,唐恩高,谢晓庆,等.海上油田早期注聚开发特征及注入方式研究[J].石油天然气学报,2013,35(7):123-126.
[4]卢大艳,孟祥海,吴威,等.渤海注聚油田堵塞井堵塞机理分析及复合解堵工艺设计[J].中国海上油气,2016,28(5):98-103.
[5]陈渊,谢建军,赵长喜,等.聚合物驱细分复合解堵技术的研究与应用[J].特种油气藏,2004,11(5):101-104.
[6]郑俊德,张英志,任华,等.注聚合物井堵塞机理分析及解堵剂研究[J].石油勘探与开发,2004,31(6):108-111.
[7]张贤松,孙福街,冯国智,等.渤海稠油油田聚合物驱影响因素研究及现场试验[J].中国海上油气,2007,19(1):30-32.
[8]郑伟林.解堵综合配套技术在孤东油田的应用[J].断块油气田,2006,13(1):70-71.
[9]卢祥国,陈会军,单明涛.大庆油田北二区西部注聚井堵塞原因及预防措施[J].油田化学,2002,19(3):258-259.
[10]张磊,张贵才,葛际江,等.中低渗油藏pH敏感聚合物深部调驱技术[J].特种油气藏,2016,23(1):135-138.
[11]徐昆,赵立强,宋爱丽,等.渤海SZ36-1油田注聚井堵塞原因分析[J].重庆科技学院学报(自然科学版),2010,12(5):35-37.
[12]周万富,赵敏,王鑫,等.注聚井堵塞原因[J].大庆石油学院学报,2004,28(2):40-42.
[13]安高诧.注聚井解堵技术研究及在双河油田的应用[J].石油天然气报,2011,33(6):341-344.
[14]陈元千,阎为格.表皮系数的分解方法[J].断块油气田,2003,10(6):32-35.
[15]康小军,王德有,成绥名,等.表皮系数系统分解方法的应用[J].油气井测试,1992,1(3):51-54.
[16]陈元千.确定井底污染半径的方法[J].石油勘探与开发,1988,5(2):63-71.