页岩气生产中产酸菌的腐蚀危害研究  

Investigation of Corrosion Caused by Acid-Producing Bacteria in Shale Gas Production

作　　者：周长林 王宇 钟海峰 谢波 刘晓东 陈飞虎 廖毅 ZHOU Changlin;WANG Yu;ZHONG Haifeng;XIE Bo;LIU Xiaodong;CHEN Feihu;LIAO Yi(Sichuan Shengnuo Oil and Gas Engineering Technology Service Co.,Ltd.,Guanghan 618300,China)

机构地区：[1]四川圣诺油气工程技术服务有限公司,四川广汉618300

出　　处：《生物化工》2024年第6期55-60,共6页Biological Chemical Engineering

摘　　要：目的:对页岩气生产中的产酸菌进行腐蚀机理研究,讨论产酸菌的腐蚀危害性。方法:通过对现场水样细菌的分离和培养,获得产酸菌菌株。在实验室条件下通过腐蚀失重和电化学分析进行产酸菌对油管钢N80的腐蚀机理研究并和硫酸盐还原菌的结果做对比。结果:产酸菌体系的腐蚀电流密度约为无菌组的9倍,其腐蚀电位低于无菌体系;产酸菌体系的腐蚀失重和腐蚀电流密度皆明显大于硫酸盐还原菌的对照数据。结论:产酸菌在相同条件下对油管钢的腐蚀速率高于硫酸盐还原菌,其在油气田中对管道的腐蚀不容忽视。Objective:To investigate the corrosion mechanism of acid producing bacteria(APB)in shale gas production,and discusse the corrosion hazards of APB.Methods:By isolating and culturing bacteria from on-site produced water samples,APB strains are obtained.The corrosion mechanism of APB on N80 steel is studied under laboratory conditions through corrosion weight loss and electrochemical analysis with comparison of the results of sulfate-reducing bacteria(SRB).Results:The corrosion current density of the APB group with lower corrosion potential is about 9 times that of the sterile group,and its corrosion potential is lower than that of the sterile system;the corrosion weight loss and corrosion current density of APB are significantly higher than the control data of SRB.Conclusion:APB has a higher corrosion rate on the oil pipe steel than SRB under the same conditions,confirming that corrosion on pipelines in oil and gas fields due to APB cannot be ignored.

关 键 词：产酸菌 硫酸盐还原菌 页岩气 腐蚀机理 

分 类 号：TE38[石油与天然气工程—油气田开发工程]