文章摘要
微生物驱油过程中配气对菌群结构及驱油效果的影响研究
The study of flora structure and oil displacement effect in MEOR under different air distributing conditions
投稿时间:2018-07-13  修订日期:2018-09-17
DOI:
中文关键词: 物模驱油实验  配气  菌群结构  功能微生物  小分子酸
英文关键词: physical experiment  air distributing  flora structure  functional microorganism  small molecular acid
基金项目:国家高技术研究发展计划(863计划)
作者单位E-mail
刘涛 1、中国石化股份胜利油田分公司石油工程技术研究院 山东东营 257000 greensky1123@163.com 
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中文摘要:
      微生物驱油过程中好氧微生物对微生物菌群的形成及驱油作用的产生具有重要影响。本文利用物理模拟的方法,评价了不同配气量条件下微生物驱油的效果及驱替过程中微生物群落的动态变化,为现场试验时有效配气量的选择提供依据。研究表明配注不同体积的空气,激活微生物作用后产生了明显的驱替效果,而且随着配气量的增加驱替效率逐渐升高,液气比为1:5时驱替效率最高为8.77%。配气量不同产出液中菌浓有一定差异,增加配气量产出液中菌浓升高。配气后激活了不同类型的功能微生物,其中4类主要优势功能菌占到了整个菌群比例的67%,配气量为液气比1:5时微生物群落shannon多样性指数最高,代谢产生的小分子酸浓度较高,微生物代谢活性最佳。液气比为1:5可以作为现场实际配气的选择依据。
英文摘要:
      It''s importent for formation of microbial flora and production of oil displacement for the aerobic microorganism in MEOR. This paper used the method of physical simulation, the effect of microbial flooding on different gas distribution conditions and the dynamic changes of microbial communities during the displacing process was evaluated. Research shows that the obvious displacement effect was produced after the action of microbes, The displacement efficiency increase with the raise of gas distribution, when the ratio of liquid to gas is 1:5, the displacement efficiency was the highest 8.77%. Increase the concentration of bacteria in the production liquid of gas distribution, the 4 main dominant functional bacteria accounted for 67% of the total bacterial population after gas distribution. The Shannon diversity index of the microbial community was the highest when the gas volume ratio was 1:5. Moreover, the highest concentration of small acid increased and the microbial metabolic activity was the best. When the liquid gas ratio is 1:5, it could be used as the basis for selecting actual gas distribution in the field.
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