| 摘要: |
| 用鼠李糖脂复配体系对大庆油田采油七厂葡北二.断块进行生物表面活性剂驱油技术研究及现场试验。结果 表明:鼠李糖脂的复配驱油体系在有效质量分数(0.125 % ~1.0%)低而宽的范围内，与葡北油水之间的界面张力 大幅F降(10_2 mN/ m数1:级>;在模拟油层渗透率的天然岩心上注人0.5KP< V￥为孔隙体积)的鼠李糖脂复配驱油 体系，采收率比水驱提高7.9% ^9.3% ；13个月驱油累积增油2014 t,平均单并增油224 t，日产油董由试验前的1.5 t上升到1.85 t,含水率最低下降1.5%，投入产出比达到1 : 2.4。 |
| 关键词: 鼠李糖脂 复配驱油体系 界面张力 采收率 现场试验 |
| DOI：10.3969/j.issn.1673-5005.2012.02.029 |
| 分类号::TE 357.7 |
| 基金项目: |
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| Combined oil displacement system and field test of rhamnolipid |
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L￡ Jian-jun1,WU Xiao-lin2,MA Liang-liang3,GUO Meng-hua1,LIU Hong-tao3,MA Cheng-dou3,WU Xiao-lei2
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(1. Exploration and Development Research Institute of Daqirtg Oilfield Company Limited, Daqing 163712，China ;2. College of Engineering，Peking University, Beijing 100871, China ;3. 1th Oil Production Plant of Daqing Oilfield Company Limited, Daqing 163517, China)
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| Abstract: |
| The bio-surfactant flooding technology was researched. The field test for rhamnolipid combined displacement system was carried out in Pubeisan fault block of No. 7 Oil Production Plant of Daqing OilHeld. The results show that rhamnolipid combined dispiacement system with low and wide effective concentration (0.125%-1.0% ) can reduce interfanial tension with oil and water in Pubei to the order of magnitude of 10"2 rnN/m. Injection of 0.5 FP( pore volume) of rhamnolipid combined displacement system in natural core simulating reservoir permeability can increase the oil recovery efficiency by 7.9% ~ 9. 3% compared with water flooding. Dtuing 13 months of field test, the cumulative incremental oil amounts to 2 014 t, with an average of 224 t for individual well. Daily oil production increases from 1. 5 t/d to 1.85 l/d, average water cut decreases by 1. 5% t and input-output ratio is 1 : 2.4. |
| Key words: riiamnolipid combined oil dispLacement system interfacial tension oil recovery efficiency field test |
