摘要
通过对陇东油田采出水水质的分析 ,确定出 CO2 、硫酸盐还原菌 ( SRB)、矿化度是造成采出水系统腐蚀的三个主要因素 ,并针对上述因素进行了静态和动态实验研究 .实验结果表明 ,SRB的存在加速了腐蚀过程 ,腐蚀速率提高 2倍以上 ,是影响腐蚀的最主要因素 .CO2 对腐蚀的影响也很显著 ,随 CO2 浓度提高腐蚀速率加快 ,CO2 的腐蚀过程可用 De waard模型来预测 .矿化度大于 2 .5 g/ L时 ,随矿化度增大腐蚀速率线性提高 ;结合腐蚀产物表面形貌和组成的电镜扫描分析 。
Carbon dioxide, sulfate-reducing bacteria (SRB) and mineralization are the three main factors ascertained affecting corrosion by the analysis on the wastewater quality of Longdong Oil Field. Static and dynamic experiments are designed to study the effects of the three main factors on the system erosion. Experimental results show that SRB, which is the most important factor influencing erosion of the system, accelerates the erosion process. Carbon dioxide also greatly affects the erosion and the corrosion rate will increase with the concentration of carbon dioxide. The results also verified that the De waard model could be used to predict the corrosion rate of the CO_(2) corrosion in Longdong Oil Field. The corrosion rate correspondingly rise with the increase of the degree of mineralization. At the same time, the configuration and component of the erosion products on the metal surface are analyzed to confirm the cause of the erosion.
出处
《西安建筑科技大学学报（自然科学版）》
CSCD
2004年第3期270-274,共5页
Journal of Xi'an University of Architecture & Technology(Natural Science Edition)
基金
国家教育部高等学校优秀青年教师教学科研计划资助
关键词
采出水
腐蚀
CO2
SRB
矿化度
oily wastewater
erosion
carbon dioxide
sulfate-reduced bacteria
mineralization
