基于等级加权法的油田注水水质优选方法
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摘要
目前油田注水水质选择依据SY/T 5329—2012标准,以注入层平均空气渗透率作为唯一评价指标,缺乏必要理论支撑与数据支持。综合考虑渗流物性、孔隙结构、胶结物性质以及地层水性质4个指标,以注水水质优选为目标,采用等级加权法对影响4个指标的各因素进行赋值以及权重的分配,建立油田注水水质优选方法,并利用Matlab软件编写计算程序,对X和M油田注水水质进行了优选。结果表明:X油田注水水质应选择SY/T 5329—2012标准中注入层平均空气渗透率为(0. 05～0. 5)μm2对应的注水水质控制指标,优选结果与标准一致,但评价结果更全面地考虑了各因素的影响; M油田注水水质应选择SY/T 5329—2012标准中注入层平均空气渗透率为(0. 05～0. 5)μm2对应的注水水质控制指标,优选结果严格于行业标准。优选方法可以指导注水水质的合理选择,减少后期酸化解堵的费用,提高油田的开发效益。
At present,the selection of water injection quality is based on standard SY/T 5329-2012,and the average air permeability of water injection reservoir isonly evaluation index,which lacks theoretical support and data support. In this paper,considering four indexes of reservoir physical property,pore structure,cement property and formation water property,taking the quality of injected water as optimization objective,value assignment and weight allocation of factors affecting the four indicators are finished by using hierarchical weighting method,and an oilfield injection water quality optimization method is established. Corresponding calculation program is compiled by using MATLAB software. The quality of injected water for X and M oilfields is optimized using this method. The results show that,the injected water of X oilfield should have the water quality control indexes corresponding to the injection water for average air permeability 0. 05 ～ 0. 50 μm2 of injecting layer in SY/T 5329-2012 standard. The optimization result is consistent with that of optimization based solely on average air permeability of injection layer,but it considers the influence of various factors more comprehensively.The injected water of M oilfield should also have the water quality control indexes corresponding to the injection water for average air permeability 0. 05 ～ 0. 50 μm2 of injection layer in SY/T 5329-2012 standard,and the result of optimization is stricter than that of optimization based solely on average air permeability of injected layer. This water quality optimization method can be used for guiding the rational selection of injected water,reduce the cost of acidizing plugging removal in the later stage,and improve the development efficiency of oilfields.
At present,the selection of water injection quality is based on standard SY/T 5329-2012,and the average air permeability of water injection reservoir isonly evaluation index,which lacks theoretical support and data support. In this paper,considering four indexes of reservoir physical property,pore structure,cement property and formation water property,taking the quality of injected water as optimization objective,value assignment and weight allocation of factors affecting the four indicators are finished by using hierarchical weighting method,and an oilfield injection water quality optimization method is established. Corresponding calculation program is compiled by using MATLAB software. The quality of injected water for X and M oilfields is optimized using this method. The results show that,the injected water of X oilfield should have the water quality control indexes corresponding to the injection water for average air permeability 0. 05 ～ 0. 50 μm2 of injecting layer in SY/T 5329-2012 standard. The optimization result is consistent with that of optimization based solely on average air permeability of injection layer,but it considers the influence of various factors more comprehensively.The injected water of M oilfield should also have the water quality control indexes corresponding to the injection water for average air permeability 0. 05 ～ 0. 50 μm2 of injection layer in SY/T 5329-2012 standard,and the result of optimization is stricter than that of optimization based solely on average air permeability of injected layer. This water quality optimization method can be used for guiding the rational selection of injected water,reduce the cost of acidizing plugging removal in the later stage,and improve the development efficiency of oilfields.
引文
[1]国家能源局.碎屑岩油藏注水水质指标及分析方法:SY/T 5329-2012[S].北京:石油工业出版社,2012.
[2]张光明,汤子余,姚红星,等.注入水水质对储层的伤害[J].石油钻采工艺,2004,26(3):46-48.ZHANG Guangming,TANG Ziyu,YAO Hongxing,et al.Formation damage caused by injection water[J]. Oil Drilling&Production Technology,2004,26(3):46-48.
[3]张艳.低渗透油田注水水质评价处理技术[J].石油钻探技术,2002,30(3):52-54.ZHANG Yan. Treating techniques of injected water evaluation in low permeable oilfield[J]. Petroleum Drilling Techniques,2002,30(3):52-54.
[4]姜维东,徐文江.海上低渗油田注水水质对储层影响实验研究[J].工业水处理,2016,36(9):85-88.JIANG Weidong,XU Wenjiang. Experimental study on the influences of water quality of injection water in offshore low-permeability oil fields on reserviors[J]. Industrial Water Treatment,2016,36(9):85-88.
[5]李明忠,秦积舜,郑连英.注水水质造成油层损害的评价技术[J].石油钻采工艺,2002,24(3):40-43.LI Mingzhong,QIN Jishun,ZHENG Lianying. Evaluation technology of formation damage caused by the quality of flooding water[J]. Oil Drilling&Production Technology,2002,24(3):40-43.
[6]汪亚蓉,汪伟英,刘子雄,等.注水水质对油藏开发指标的影响研究[J].断块油气田,2010,17(1):82-84.WANG Yarong,WANG Weiying,LIU Zixiong,et al. Effect of injected water quality on reservoir development index[J]. Fault-Block Oil&Gas Field,2010,17(1):82-84.
[7]张洪军.注水水质对储层渗流物性及油藏开发动态指标的影响研究[D].成都:西南石油学院,2003.
[8]李海涛,李洪建,赵敏.砂岩储层配伍性注水水质方案研究[J].西南石油学院学报,1997,19(3):35-42.LI Haitao,LI Hongjian,ZHAO Min. Study on water quality strategy for conpatiable water injection in sandstones[J]. Journal of Southwest Petroleum Institute,1997,19(3):35-42.
[9]刘建忠,徐文江,姜维东. BZ34油田回注水合理水质控制指标设计[J].工业水处理,2016,36(10):84-87.LIU Jianzhong,XU Wenjiang,JIANG Weidong. Design of reasonable water quality control indexes for BZ34 oilfield reinjection water[J]. Industrial Water Treatment,2016,36(10):84-87.
[10]张国荣.注水水质对油田开发效果影响研究[J].石油天然气学报,2008,30(5):149-151.ZHANG Guorong. The influence of injected water quality on the effect of waterflooding effectiveness[J]. Journal of Oil and Gas Technology,2008,30(5):149-151.
[11]吴锋,李晓平.注水水质对低渗油藏注采井开发指标的影响[J].西部探矿工程,2008(12):90-92.WU Feng,LI Xiaoping. Effect of water injection quality on development indicators of injection and production wells in low permeability reservoirs[J]. West-China Exploration Engineering,2008(12):90-92.
[12]蒋建勋,王永清,李海涛,等.注水开发油田水质优化方法研究[J].西南石油学院学报,2003,25(3):26-29.JIANG Jianxun,WANG Yongqing,LI Haitao,et al. Study on method of water quality optimization in water injection to develop oilfield[J]. Journal of Southwest Petroleum Institute,2003,25(3):26-29.
[13]刘学峰.注水水质对水驱砂岩油田开发效果的影响[J].石油地质与工程,2008,22(5):115-117.LIU Xuefeng. Effect of water injection quality on the development effect of water-driven sandstone oil fields[J].Petroleum Geology and Engineering,2008,22(5):115-117.
[14]吴锋,李晓平,廖伍彬,等.注水水质对低渗油藏开发指标的影响研究[J].特种油气藏,2007,14(4):68-71.WU Feng,LI Xiaoping,LIAO Wubin,et al. The impact of injected water quality on low permeability reservoir development index[J]. Special Oil&Gas Reservoirs,2007,14(4):68-71.
[15]杨海波.水质对油田注水开发效果的影响探析[J].化学工程与装备,2017,12:95-96.YANG Haibo. Analysis of influence of water quality on oilfield water injection development effect[J]. Chemical Engineering&Equipment,2017,12:95-96.
[16]杨阳,曹砚锋,隋先富,等.基于等级加权法的海上机械采油方式优选方法[J].石油钻探技术,2016,44(1):73-78.YANG Yang,CAO Yanfeng,SUI Xianfu,et al. Optimizal method of offshore oil artificial lift modes based on hierarchical grade-weighted method[J]. Petroleum Drilling Techniques,2016,44(1):73-78.
[2]张光明,汤子余,姚红星,等.注入水水质对储层的伤害[J].石油钻采工艺,2004,26(3):46-48.ZHANG Guangming,TANG Ziyu,YAO Hongxing,et al.Formation damage caused by injection water[J]. Oil Drilling&Production Technology,2004,26(3):46-48.
[3]张艳.低渗透油田注水水质评价处理技术[J].石油钻探技术,2002,30(3):52-54.ZHANG Yan. Treating techniques of injected water evaluation in low permeable oilfield[J]. Petroleum Drilling Techniques,2002,30(3):52-54.
[4]姜维东,徐文江.海上低渗油田注水水质对储层影响实验研究[J].工业水处理,2016,36(9):85-88.JIANG Weidong,XU Wenjiang. Experimental study on the influences of water quality of injection water in offshore low-permeability oil fields on reserviors[J]. Industrial Water Treatment,2016,36(9):85-88.
[5]李明忠,秦积舜,郑连英.注水水质造成油层损害的评价技术[J].石油钻采工艺,2002,24(3):40-43.LI Mingzhong,QIN Jishun,ZHENG Lianying. Evaluation technology of formation damage caused by the quality of flooding water[J]. Oil Drilling&Production Technology,2002,24(3):40-43.
[6]汪亚蓉,汪伟英,刘子雄,等.注水水质对油藏开发指标的影响研究[J].断块油气田,2010,17(1):82-84.WANG Yarong,WANG Weiying,LIU Zixiong,et al. Effect of injected water quality on reservoir development index[J]. Fault-Block Oil&Gas Field,2010,17(1):82-84.
[7]张洪军.注水水质对储层渗流物性及油藏开发动态指标的影响研究[D].成都:西南石油学院,2003.
[8]李海涛,李洪建,赵敏.砂岩储层配伍性注水水质方案研究[J].西南石油学院学报,1997,19(3):35-42.LI Haitao,LI Hongjian,ZHAO Min. Study on water quality strategy for conpatiable water injection in sandstones[J]. Journal of Southwest Petroleum Institute,1997,19(3):35-42.
[9]刘建忠,徐文江,姜维东. BZ34油田回注水合理水质控制指标设计[J].工业水处理,2016,36(10):84-87.LIU Jianzhong,XU Wenjiang,JIANG Weidong. Design of reasonable water quality control indexes for BZ34 oilfield reinjection water[J]. Industrial Water Treatment,2016,36(10):84-87.
[10]张国荣.注水水质对油田开发效果影响研究[J].石油天然气学报,2008,30(5):149-151.ZHANG Guorong. The influence of injected water quality on the effect of waterflooding effectiveness[J]. Journal of Oil and Gas Technology,2008,30(5):149-151.
[11]吴锋,李晓平.注水水质对低渗油藏注采井开发指标的影响[J].西部探矿工程,2008(12):90-92.WU Feng,LI Xiaoping. Effect of water injection quality on development indicators of injection and production wells in low permeability reservoirs[J]. West-China Exploration Engineering,2008(12):90-92.
[12]蒋建勋,王永清,李海涛,等.注水开发油田水质优化方法研究[J].西南石油学院学报,2003,25(3):26-29.JIANG Jianxun,WANG Yongqing,LI Haitao,et al. Study on method of water quality optimization in water injection to develop oilfield[J]. Journal of Southwest Petroleum Institute,2003,25(3):26-29.
[13]刘学峰.注水水质对水驱砂岩油田开发效果的影响[J].石油地质与工程,2008,22(5):115-117.LIU Xuefeng. Effect of water injection quality on the development effect of water-driven sandstone oil fields[J].Petroleum Geology and Engineering,2008,22(5):115-117.
[14]吴锋,李晓平,廖伍彬,等.注水水质对低渗油藏开发指标的影响研究[J].特种油气藏,2007,14(4):68-71.WU Feng,LI Xiaoping,LIAO Wubin,et al. The impact of injected water quality on low permeability reservoir development index[J]. Special Oil&Gas Reservoirs,2007,14(4):68-71.
[15]杨海波.水质对油田注水开发效果的影响探析[J].化学工程与装备,2017,12:95-96.YANG Haibo. Analysis of influence of water quality on oilfield water injection development effect[J]. Chemical Engineering&Equipment,2017,12:95-96.
[16]杨阳,曹砚锋,隋先富,等.基于等级加权法的海上机械采油方式优选方法[J].石油钻探技术,2016,44(1):73-78.YANG Yang,CAO Yanfeng,SUI Xianfu,et al. Optimizal method of offshore oil artificial lift modes based on hierarchical grade-weighted method[J]. Petroleum Drilling Techniques,2016,44(1):73-78.
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