高温高矿化度油藏聚合物调驱技术研究
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第19卷第1期Research on polymer profile control and oil displacement technology in high temperature
and high salinity reservoir
Zhang Yunlai 1,Lu Xiangguo 2,Sun Shuang 3,Pan Ling 4,Zhu Guohua 4
(1.Tianjin Branch of CNOOC,Tianjin 300452,China;2.MOE Key Laboratory of Enhanced Oil Recovery,Northeast Petroleum University,Daqing 163318,China;3.Mud Company,Bohai Drilling Engineering Co.Ltd.,CNPC,Tianjin 300280,China;4.Institute
of Geological Sciences,Jiangsu Oilfield Company,SINOPEC,Yangzhou 225009,China)
Abstract:At present,the development of Jiangsu Oilfield with the characteristics of high temperature,high salinity and serious heterogeneity has been the late development stage with extra -high water -cut,and there is an urgent need to take further measures to enhance oil recovery.Recently,with the increasingly mature of Cr 3+/HPAM gel profile control and displacement technology,the Cr 3+/HPAM technology with material and technical base,which is suitable for high temperature and high salinity,has been developed.Aiming at the actual demand in the development of Jiangsu oilfield,the authors screen the Cr 3+/HPAM gel formulations which are fit for the fluid nature and characteristics of Jiangsu oilfield reservoir by using the detection equipment and modern physics simulation,and do some researches on the flow characteristics and displacement effect of gel in porous media.The results show that the ratio of polymer and Cr 3+,the polymer concentration and the core permeability are the main factors that affect the ability of gel injection,and the increased oil effect by using the slug composition of profile controls plus polymer flooding is good,which is superior to pure polymer flooding.
Key words:high temperature and high salinity reservoir;Cr 3+/HPAM gel;flow characteristics;displacement effect
对于特高含水开发阶段中后期的油藏而言,改善水驱开发效果的重要途径是扩大波及体积,而聚合物驱就是扩大波及体积、改善水驱开发效果的一项有效措施[1]。江苏油田油藏温度高、注入水矿化度高,对聚合物溶液黏度影响十分严重,单纯聚合物驱难以获得较好的增油效果[2-3]。Cr 3+/HPAM 凝胶具有抗盐抗温能力强、成胶速度快、封堵效果好及药剂成本低等特点,
在国内油田调驱应用中取得了较好效果。近年来,在改善Cr 3+/HPAM 凝胶性能和拓宽其应用范围方面受到了
高温高矿化度油藏聚合物调驱技术研究
张运来1,卢祥国2,孙双3,潘凌4,朱国华4
(1.中海石油(中国)有限公司天津分公司,天津300452;2.东北石油大学提高油气采收率教育部重点实验室,黑龙江大庆163318;
3.中国石油渤海钻探泥浆公司,天津300280;
4.中国石化江苏油田分公司地质科学研究院,江苏扬州225009)
基金项目:中国石化江苏油田分公司“中、高渗透油藏聚合物驱室内评价和最佳实施时机研究”项目(06-218)
摘
要
江苏油田具有高温、高矿化度和非均质性严重等特征,目前油田已处于特高含水开发阶段中后期,迫切需要采取
进一步提高原油采收率的技术措施。近年来,随着Cr 3+/HPAM 凝胶调驱技术的日益成熟,开发出适合高温、高矿化度油藏的
Cr 3+/HPAM 凝胶,已具备了物质和技术基础。针对江苏油田开发的实际需求,利用仪器检测和现代物理模拟方法,对适合江
苏油田流体性质和油藏特征的Cr 3+/HPAM 凝胶配方进行了筛选,并对凝胶在多孔介质内的流动特性和调驱效果进行了实验研究。结果表明,聚铬比、聚合物质量浓度和岩心渗透率是影响凝胶注入的主要因素,“调剖+聚合物驱”要比单一的聚合物驱增油效果好。关键词
高温高矿化度油藏;Cr 3+/HPAM 凝胶;流动性质;调驱效果
中图分类号:TE357.46
文献标志码:A
文章编号:1005-8907(2012)01-0133-04
引用格式:张运来,卢祥国,孙双,等.高温高矿化度油藏聚合物调驱技术研究[J ].断块油气田,2012,19(1):133-136.
Zhang Yunlai ,Lu Xiangguo ,Sun Shuang ,et al.Research on polymer profile control and oil displacement technology in high temperature and high salinity reservoir [J ].Fault -Block Oil &Gas Field ,2012,19(1):133-136.
收稿日期:2011-04-20;改回日期:2011-11-29。
作者简介:张运来,男,1982年生,2009年毕业于大庆石油学院,获硕士学位,现从事油气田开发方面的工作。E -mail :zhangyl8@ 。
断块油气田
FAULT -BLOCK OIL &GAS FIELD 2012年1月