一种新型高温酸化缓蚀剂的制备及性能评价

发布时间：2018-03-03 10:03

  本文选题：吡啶类季铵盐　切入点：缓蚀性能　出处：《表面技术》2017年10期 　论文类型：期刊论文

【摘要】：目的改善缓蚀剂在高温酸液中的缓蚀性能,满足油田高温井酸化施工的要求。方法在合成一种新型吡啶季铵盐的基础上,添加炔醇、碘化钾等助剂进行复配,得到一种新型高温酸化缓蚀剂HTCI-1。使用HK-1高温高压动态腐蚀仪对其缓蚀性能进行测试,通过电化学测试、SEM、EDS等实验对其缓蚀机理进行分析。结果该酸化缓蚀剂在160℃、16 MPa、20%HCl或者土酸(12%HCl+3%HF)、质量分数3.0%的条件下,使N80试片的腐蚀速率分别为24.53 g/(m~2·h)和23.72 g/(m~2·h),达到了SY/T 5405—1996中的一级指标。结论在高温酸液中,N80钢片腐蚀速率降低,主要是由于缓蚀剂分子吸附到碳钢表面形成了一层致密的疏水性吸附膜,从而降低了侵蚀性离子与钢铁表面接触的几率,腐蚀电极反应过程受到抑制,达到了高温条件下防护金属的目的。
[Abstract]:Objective to improve the corrosion inhibition performance of corrosion inhibitor in high temperature acid solution and to meet the requirements of acidizing operation of oilfield high temperature wells. Methods based on the synthesis of a new pyridine quaternary ammonium salt, the additives such as acetylene alcohol and potassium iodide were added. A novel high temperature acidizing inhibitor HTCI-1 was obtained. The corrosion inhibition performance of HTCI-1 was tested by HK-1 high temperature and high pressure dynamic corrosion tester. The corrosion inhibition mechanism was analyzed by electrochemical test, such as SEMN EDS and so on. Results the acidizing inhibitor was prepared under the condition of 160 鈩，

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