胜利油田东辛永921站注入水腐蚀原因研究与防护
Corrosion Reason Study and Protection of Water Injection System at Dongxin Yong 921 Joint Station in Shengli Oilfield
浏览(2202) 下载(1)
- DOI:
- 作者:
- 龙媛媛, 柳言国, 杨为刚, 刘超, 郭玲
LONG Yuan -yuan, LIU Yan-guo, Yang Wei-gang, Liu chao, Guo ling
- 作者单位:
- 胜利油田技术检测中心腐蚀与防护研究所,山东东营 257000
Research Institute for Corrosion and Protection, Technology Detection Center of Shengli Oilfield, Dongying 257000, China
- 关键词:
- 油田注入水;腐蚀;原因分析;防护
oilfield injecting water;corrosion;reason analysis;protection
- 摘要:
- 为确定胜利油田典型腐蚀结垢区块东辛永921站的腐蚀结垢原因,评价筛选缓蚀剂,文章综合利用水质分析、细菌测试、水腐蚀性测试、腐蚀产物与垢物分析、腐蚀速率测试等多种分析与测试手段,研究了东辛永921站注水系统腐蚀的原因,主要有以下几方面:溶解氧加速下的Ca2+/HCO-3体系腐蚀,腐生菌与硫酸盐还原菌联合作用下的垢下腐蚀,大量Cl-的存在促进垢下腐蚀。通过对缓蚀剂评价与筛选,确定IMC-07加药浓度为40mg/L时可将深井水、浅井水和深浅井混合水的腐蚀速率控制在0.076mm/a以下,缓蚀率达到85%以上,适于东辛永921站现场应用。
Several analytical methods and testing means, including water quality analysis, bacteria testing, water corrosiveness testing, corrosion products, scale component analysis and corrosion rate testing, were ap- plied to study corrosion reasons of the water injection system at Dongxin Yong 921 Joint Station. The main reasons were indicated to be dissolved oxygen plus Ca2+/HCO3- system corrosion, combined effect of TGB and SRB, and speeding up subscale corrosion by large amount of Cl-. Through screening and evaluating corrosion inhibitors, IMC-07 concentration of 40 mg/L was chosen as a suitable inhibitor which could control the corro- sion rate within 0.076 mm/a and get corrosion inhibition efficiency more than 85% for deep well water, shallow well water or their mixed water. 【Key Words】： oilfield injecting water corrosion reason analysis protection2009,2(2): 43-46 收稿日期：2008-3-5分类号：TE988.2作者简介：龙媛媛(1979-),女,辽宁沈阳人,工程师,2004年毕业于沈阳化工学院,硕士研究生,现从事管道及设备的腐蚀与防护工作.参考文献：
[1]龙嫒媛.胜利油田典型区块集输系统的腐蚀及防护[J].石油化工腐蚀与防护,2006,23(6):1-2.
[2]石仁委,龙嫒嫒.油气管道防腐蚀r亡程[M].北京:中国石化出版社,2008.