焊管2024，Vol.47Issue(3)：35-40,6.DOI:10.19291/j.cnki.1001-3938.2024.03.005
侏罗系油藏油井用固体缓蚀剂适用性研究
Applicability Study on a Solid Corrosion Inhibitor in Oil Well of Jurassic Reservoirs
摘要
Abstract
Based on relevant standards and corrosion rate and electrochemical performance test in simulated working conditions,the physical and chemical properties,inhibition performance as well as function mechanism were evaluated and analyzed,and the applicability of solid corrosion inhibitor in the development of Jurassic reservoirs in Changqing Oilfield was studied.The results show that the solid corrosion inhibitor possesses good physical and chemical properties and good solubility in on-site water medium,and no tendency to emulsification.However,the existence of a large amount of oil phase will reduce the long-term effectiveness of solid corrosion inhibitor.After adding the solid corrosion inhibitor,the uniform corrosion rate of J55 steel decreases significantly in a short release period,and the inhibition efficiency can reach 85.64%.After the solid corrosion inhibitor releases for a long time,the corrosion inhibition is obviously weakened,and the inhibition efficiency is only 7.37%after 60 days.Based on the test results of uniform and local corrosion inhibition performance and release rate,the dosing period of solid corrosion inhibitor shall not exceed 60 days.The electrochemical function mechanism of the solid corrosion inhibitor is mainly cathodic reaction inhibition.When the solid corrosion inhibitor releases for a long time,the anodic reaction of J55 steel will to be activated obviously and the resistance of the inhibitor adsorption film decreases sharply,and the inhibition effect of solid corrosion inhibitor reduces significantly.关键词
固体缓蚀剂/侏罗系油藏/理化性能/缓蚀作用机理Key words
solid corrosion inhibitor/Jurassic reservoirs/physical and chemical properties/corrosion inhibition mechanism分类
矿业与冶金引用本文复制引用
吕祥鸿,谢登峰,徐建国,张鑫鑫,王晨辉,王晨..侏罗系油藏油井用固体缓蚀剂适用性研究[J].焊管,2024,47(3):35-40,6.基金项目
国家自然科学基金青年科学基金项目"W/B4C纳米多层涂层的界面结构和强韧化机理研究"(项目编号51902254) （项目编号51902254）
陕西省自然科学基础研究计划"Al掺杂FeMn/TiN纳米涂层的相变行为和强韧化机理研究"(项目编号2018JQ5108). （项目编号2018JQ5108）
