石油学报 ›› 2015, Vol. 36 ›› Issue (4): 490-495.DOI: 10.7623/syxb201504010

• 油田开发 • 上一篇    下一篇

微生物与弱凝胶复合驱油配伍性

齐义彬1, 曹美娜2, 黄立信3, 崔庆锋3, 俞理3, 吴永锋4   

  1. 1. 中国科学院大学渗流流体力学研究所 河北廊坊 065007;
    2. 南开大学生命科学学院 天津 300071;
    3. 中国石油勘探开发研究院廊坊分院 河北廊坊 065007;
    4. 中国石油新疆油田公司采油二厂 新疆克拉玛依 834008
  • 收稿日期:2014-10-18 修回日期:2015-01-08 出版日期:2015-04-25 发布日期:2015-04-04
  • 通讯作者: 俞理,男,1964年8月生,1987年获兰州大学学士学位,现为中国石油勘探开发研究院廊坊分院高级工程师,主要从事微生物提高采收率方面的工作。Email:yuli69@petrochina,com.cn
  • 作者简介:齐义彬,男,1985年12月生,2012年获南开大学学士学位,现为中国科学院大学渗流流体力学研究所博士研究生,主要从事微生物提高采收率领域的研究工作。Email:qybn118@163.com
  • 基金资助:

    国家高技术研究发展计划(863)项目(2013AA064402)资助。

Compatibility of microbe-weak gel combinational flooding

Qi Yibin1, Cao Meina2, Huang Lixin3, Cui Qingfeng3, Yu Li3, Wu Yongfeng4   

  1. 1. Institute of Porous Flow & Fluid Mechanics, University of Chinese Academy of Sciences, Hebei Langfang 065007, China;
    2. College of Life Sciences, Nankai University, Tianjin 300071, China;
    3. Langfang Branch, Petro China Research Institute of Petroleum Exploration and Development, Hebei Langfang 065007, China;
    4. The Second Oil Production Plant, PetroChina XinJiang Oilfield Company, Xinjiang Karamay 834008, China
  • Received:2014-10-18 Revised:2015-01-08 Online:2015-04-25 Published:2015-04-04

摘要:

为了推动宝力格油田巴19断块弱凝胶调驱和微生物驱复合驱油实验研究,对弱凝胶与微生物的配伍性进行了实验分析。芽孢杆菌Chang和Jian分离自巴19断块地层水,这两株菌对原油的降解率分别达到160 mg/d和138 mg/d、降黏率达到50.5% 和66.3%,形成的原油乳状液油滴平均粒径为38.22 μm和18.54 μm。经测定,两株菌均能代谢产生脂肽类表面活性剂,产量分别为682 mg/L和476 mg/L。微生物和弱凝胶的配伍性实验发现,菌株Jian对弱凝胶的成胶性能没有影响;在弱凝胶调驱的现场使用浓度内,Jian的生长代谢、乳化分散(表面张力为40.78 mN/m、乳化原油平均粒径为22.46 μm)、降黏(降黏率为132 mg/d)和降解(降解率为63.6%)能力也没有明显降低。弱凝胶和微生物复合驱油在弱凝胶驱的基础上可提高采收率7.26%,在微生物驱基础上可提高采收率12.67%,说明菌株Jian与该弱凝胶复合驱油具有良好的配伍性。

关键词: 微生物, 弱凝胶, 配伍性, 降黏, 提高采收率

Abstract:

In order to promote the research on the weak gel-microbe combinational flooding in Block Ba 19, Baolige Oilfield, experimental analyses were carried out on the compatibility of weak gel and microbe. Bacillus Chang and Jian were isolated from the formation water in Block Ba 19. The oil degradation rate of both bacilli reaches 160 mg/d and 138 mg/d respectively; the viscosity reducing ratio is 50.5% and 66.3% respectively; the droplet diameter of crude oil emulsion is 38.22 μm and 18.54 μm respectively. It si determined that both bacilli can produce lipopeptide surfactant by metabolism with the yield of 682 mg/L and 476 mg/L respectively. Through experiment on the compatibility of microbe and weak gel, it is found that Bacillus Jian has no effect on the gel performance of weak gel; within the range of concentration used in the actual weak gel flooding site, no significant reduction occurs to the growth metabolism, emulsion dispersion (surface tension and average grain size of emulsified crude oil are 40.78 mN/m and 22.46 μm respectively), reduction of viscosity (viscosity reducing ratio of 132 mg/d) and degradation capacities (degradation rate of 63.6%) of Bacillus Jian. The week gel-microbe combinational flooding can enhance the recovery by 7.26% and 12.67% on the basis of weak gel flooding and microbial flooding respectively, thus proving the favorable compatibility of Bacillus Jian with the weak gel combinational flooding.

Key words: microbe, weak gel, compatibility, viscosity reduction, enhancedoil recovery

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