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沾3内源微生物驱的生物特征变化及其对驱油效果的影响
胡婧,曹功泽,王文杰,吴晓玲,曹嫣镔,汪卫东,唐存知
0
(中国石化胜利油田分公司石油工程技术研究院,山东东营 257067;青岛市黄岛区致远中学,山东青岛 266510;中国石化胜利油田分公司河口采油厂工艺研究所,山东东营 257200)
摘要:
内源微生物驱油通过激活油藏中特定的微生物群落提高原油采收率。分析胜利油田沾3区块内源微生物驱现场试验产出液中微生物群落结构以及优势菌的动态变化,考察油藏生物特征与现场开发动态之间的对应关系。结果表明:生物多样性、优势菌含量与现场生产动态之间存在明显的相关性,其中菌群多样性与原油产量之间呈明显负相关关系;4类优势菌的交替协同作用直接影响了原油产量,优势菌总量的变化与原油产量之间呈明显正相关关系,而且油井产量的变化滞后于生物特征的变化。
关键词:  内源微生物驱  生物特征  优势菌
DOI:10.3969/j.issn.1673-5005.2017.04.023
投稿时间:2016-11-23
基金项目:国家“863”计划项目(2013AA064401)
Change of biological features and its impact on flooding effect of indigenous MEOR in Zhan3 block
HU Jing,CAO Gongze,WANG Wenjie,WU Xiaoling,CAO Yanbin,WANG Weidong,TANG Cunzhi
(Petroleum Engineering Technology Research Institute, Shengli Oilfield Company, SINOPEC, Dongying 257067, China;Huangdao Zhiyuan Middle School of Qingdao, Qingdao 266510, China;Research Institute of Production Technology,Hekou Oil Production Factory, Shengli Oilfield Company, SINOPEC, Dongying 257200, China)
Abstract:
The oil recovery is increased using the indigenous microorganism flooding through specific indigenous microorganisms by injecting nutrients. The microbial community structure and the dynamic changes of the dominant bacterium in the production liquid of microbial flooding in Zhan3 block of Shengli Oilfield were analyzed, through which the relationship between the biological features and the dynamic changes of production performance was studied. It is found that there exits clear correlation between microbial diversity, dominant bacteria content and the oil production performance. A significant negative correlation is observed between the microbial diversity and the oil production. And the oil production is affected directly by the alternative synergism of 4 dominant bacteria. It is also found that a significant positive correlation exists between the content of dominant bacteria and oil production. And the change of oil production lags behind the change of the biological features.
Key words:  indigenous microorganism flooding  biological features  dominant bacteria