| 大庆油田萨北开发区二类油层二元复合驱技术研究 |
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| 引用本文： | 王荣健,;卢祥国,;牛丽伟,;高尔双,;车鑫晖.大庆油田萨北开发区二类油层二元复合驱技术研究[J].海洋地质译丛,2009(3):57-62. |
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| 作者姓名： | 王荣健 ;卢祥国 ;牛丽伟 ;高尔双 ;车鑫晖 |
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| 作者单位： | [1]大庆石油学院提高油气采收率教育部重点实验室,黑龙江大庆163318; [2]大庆油田有限责任公司第三采油厂,黑龙江大庆163114 |
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| 基金项目： | 中国石油大庆油田有限责任公司重点科技攻关课题,合同编号：DQYT-0503003-2008-JS-532. |
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| 摘 要： | 大庆油田萨北开发区二类油层具有渗透率低和非均质严重等特点，水驱开采效果差。对4种不同表面活性剂二元复合体系黏度、界面张力及其稳定性进行了评价，优选出性能好的“炼化石油磺酸盐／聚合物”二元复合体系。还对该体系的驱油效果、注入参数、黏度和段塞组合等进行了实验研究，结果表明“炼化石油磺酸盐／聚合物”二元复合体系具有较好增油效果。“整体”段塞和段塞黏度排序“低中高”注入方式的增油效果较好，调剖愈早，增油效果愈好。推荐矿场采用的注入方式为：先注入0．05～0．08PV的Cr^3＋聚合物凝胶段塞，再转注0．33～0．49PV二元复合体系（CP=1200mg／L，CS=0．2％）。在上述配方组成和段塞组合条件下，比水驱提高采收率15％以上。
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| 关 键 词： | 大庆油田 萨北开发区 二类油层 二元复合驱 效果评价 参数优化 |
Study on surfactant/polymer flooding technology for under-productive oil layers indevelopment zone of the north Saertu of Daqing Oilfield |
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| Institution: | Wang Rongjian, Lu Xiangguo, Niu Liwei, Gao Ershuang, Che Xinhui (1. Key Laboratory of Enhanced Oil Recovery of Ministry of Education, Daqing Petroleum Institute, Daqing 163318; 2. Third Oil Production Plant, Daqing Oil field Co. Ltd. ,Daqing 163114) |
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| Abstract: | Because of low permeability and serious heterogeneity in the under-productive oil layers in development zone of the north Saertu of Daqing oilfield, the effect of water flooding is becoming worse and worse. The viscosity, interracial tension and stability of 4 kinds of surfactant/polymer （SP） systems was evaluated in the paper and refining petroleum sulfonate/polymer system was chosen. Moreover, the flooding effect, injection parameters, viscosity and combination of slug of this SP system have been studied. The result showed that the SP flooding system had a very good performance. At the same time, the whole plug and the plug injected by order of low, middle and high viscosity have a better effect. Besides, the earlier the profile modification, the better the effect of increasing oil. The recommended injection mode is： inject Cr^3＋ （0.05--0.08 PV） cross-linked polymer gel first, and then inject SP solution （0.33--0.49 PV） whose polymer and surfactant concentration are 1 200 mg/L and 0.2% respectively. Using such formula and the combination of slug, oil recovery could be increased by more than 15 % compared with using water flooding. |
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| Keywords: | Daqing Oilfield development zone of the north Saertu under-productive oil layer SP flooding effect evaluation parameter optimization |
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