摘要
近年来大量研究表明,油田系统中的硫化物是造成油田系统管网腐蚀的主要因素,空气氧化除硫技术在除硫的同时又带来新的氧腐蚀问题。为了研究硫化物、SRB和溶解氧含量对油田污水腐蚀速率的影响规律,选取N80挂片进行三组实验对照,测定挂片腐蚀速率及质量损失情况,并用高通量测序来分析实验过程中微生物群落的变化及差异。通过实验发现溶解氧造成的电化学腐蚀最严重,微生物腐蚀是一种复杂且持久的腐蚀类型,并且在有微生物参与的环境中,微生物的腐蚀作用随时间推移逐渐成为主导因素,微生物群落的多样性与腐蚀呈正相关。
In recent years,a large number of studies have shown that sulfide in oilfield systems is the main factor causing corrosion in the pipeline networks of the oilfield systems.Air oxidation desulfurization technology brings new oxygen corrosion problems while removing sulfur.In order to study the influence of sulfide,SRB(sulfate-reducing bacteria),and dissolved oxygen content on the corrosion rate of oilfield wastewater,three groups of experimental control were selected for N80 hanging pieces to determine the corrosion rate and quality loss of the hanging pieces,high-throughput sequencing was used to analyze the changes and differences in microbial communities during the experiment progress.The experiments revealed that the electrochemical corrosion caused by dissolved oxygen is the most serious,and microbial corrosion is a complex and persistent type of corrosion.In the environment with microbial participation,microbial corrosion gradually becomes the dominant factor with time,and the diversity of the microbial community is positively correlated with the corrosion.
作者
孟章进
杨帆
姜桂英
马明
MENG Zhangjin;YANG Fan;JIANG Guiying;MA Ming(Petroleum Engineering Technology Research Institute of Jiangsu Oilfield Company,SINOPEC,Yangzhou 225009,China)
出处
《复杂油气藏》
2025年第1期122-126,共5页
Complex Hydrocarbon Reservoirs
关键词
腐蚀
挂片
溶解氧
硫化物
SRB
微生物群落结构
corrosion
hanging piece
dissolved oxygen
sulfide
SRB
microbial community structure
作者简介
第一作者:孟章进(1982-),本科,副研究员,现从事油田防腐防垢及储层改造技术研究工作。E-mail:mengzj.jsyt@sinopec.com。
