钻井液与完井液2017，Vol.34Issue(5)：100-105,6.DOI:10.3969/j.issn.1001-5620.2017.05.019
一种新型高温酸化缓蚀剂的制备及其应用
Study and Application of a New Corrosion Inhibitor forHigh Temperature Acidization
摘要
Abstract
A pyridine quaternary ammonium salt has been developed to satisfy the needs of HTHP acidization operations. The pyridine quaternary ammonium salt was synthesized with 3-methryl pyridine and benzyl chloride as the main raw materials, and a certain ratio of extender and surfactant were added to the product to produce a corrosion inhibitor, HTCI-2 used in high temperature acidizing operations. Evaluation of HTCI-2 showed that the corrosion rate of an N80 coupon was 38.1 g/(m2fh) or 39.6 g/(m2fh) under these conditions: 180 ℃,16 MPa, 20％ HCl (or 12％HCl + 3％HF) and 4.5％ of HTCI-2. SEM analyses, EDS energy spectrum and polarization curve experiments showed that HTCI-2 is a hybrid corrosion inhibitor that functions through inhibiting anodic reaction. By forming a tight filming against the surface of N80 coupon, HTCI-2 effectively prevents the surface of the steel from being contacted with acids. HTCI-2 is free of toxic alkyne compounds, and is compatible with commonly used additives for acidizing operations. Acidizing job in the well Binshen22-8 in Binshen block was conducted smoothly.关键词
吡啶类季铵盐/缓蚀剂高温酸化/电镜扫描/增效剂/表面活性剂/极化曲线Key words
Pyridine Quaternary ammonium/Corrosion inhibitor for high temperature acidization/SEM/Extender/Surfactant/Polarization curve分类
能源科技引用本文复制引用
张朔,吕选鹏,刘德正,徐庆祥,马田力,黄其..一种新型高温酸化缓蚀剂的制备及其应用[J].钻井液与完井液,2017,34(5):100-105,6.基金项目
中石油渤海钻探工程有限公司项目"高温酸化缓蚀剂的研究"(2016JXJF-01). （2016JXJF-01）
