Relationship between Microbial Community Characteristics and Flooding Efficiency in Microbial Enhanced Oil Recovery  

作　　者：Gangzheng Sun Jing Hu Qiongyao Chen Zihui Chen Weidong Wang Qin Qian Feng Han Ling Li Yuesheng Li Gangzheng Sun;Jing Hu;Qiongyao Chen;Zihui Chen;Weidong Wang;Qin Qian;Feng Han;Ling Li;Yuesheng Li(Research Institute of Petroleum Engineering and Technology, Shengli Oilfield Company, Sinopec, Dongying, China;Shengli Oilfield Company, Sinopec, Dongying, China;Hekou Oil Production Factory, Shengli Oilfield Company, Dongying, China)

机构地区：[1]Research Institute of Petroleum Engineering and Technology, Shengli Oilfield Company, Sinopec, Dongying, China [2]Shengli Oilfield Company, Sinopec, Dongying, China [3]Hekou Oil Production Factory, Shengli Oilfield Company, Dongying, China

出　　处：《Advances in Bioscience and Biotechnology》2022年第5期242-253,共12页生命科学与技术进展（英文）

摘　　要：Microbial enhanced oil recovery (MEOR) is the research focus in the field of energy development as an environmentally friendly and low cost technology. MEOR can bes divided into indigenous microbial oil recovery and exogenous microbial oil recovery. The ultimate goal of indigenous microbial flooding is to enhance oil recovery via stimulation of specific indigenous microorganisms by injecting optimal nutrients. For studying the specific rule to activate the indigenous community during the long-term injection period, a series of indigenous displacement flooding experiments were carried out by using the long-core physical simulation test. The experimental results have shown that the movement of nutrients components (i.e., carbon/nitrogen/phosphorus) differed from the consumption of them. Moreover, there was a positive relationship between the nutrients concentration and bacteria concentration once observed in the produced fluid. And the trend of concentration of acetic acid was consistent with that of methanogens. When adding same activators, the impacts of selective activators to stimulate the indigenous microorganisms became worse along with the injection period, which led to less oil recovery efficiency.Microbial enhanced oil recovery (MEOR) is the research focus in the field of energy development as an environmentally friendly and low cost technology. MEOR can bes divided into indigenous microbial oil recovery and exogenous microbial oil recovery. The ultimate goal of indigenous microbial flooding is to enhance oil recovery via stimulation of specific indigenous microorganisms by injecting optimal nutrients. For studying the specific rule to activate the indigenous community during the long-term injection period, a series of indigenous displacement flooding experiments were carried out by using the long-core physical simulation test. The experimental results have shown that the movement of nutrients components (i.e., carbon/nitrogen/phosphorus) differed from the consumption of them. Moreover, there was a positive relationship between the nutrients concentration and bacteria concentration once observed in the produced fluid. And the trend of concentration of acetic acid was consistent with that of methanogens. When adding same activators, the impacts of selective activators to stimulate the indigenous microorganisms became worse along with the injection period, which led to less oil recovery efficiency.

关 键 词：Microbial Enhanced Oil Recovery (MEOR) Nutrient Concentration Bacterial Concentration METHANOGENS Microbial Activity 

分 类 号：TE3[石油与天然气工程—油气田开发工程]