Effect of Pre-film Time, Corrosion Temperature and Medium Flow Velocity onCorrosion Inhibition Performance for Oil Well Pipe Inhibitor
摘 要
采用咪唑啉类缓蚀剂对P110S油管钢进行预膜处理和腐蚀试验,研究了预膜时间(0.5~4 h)、腐蚀温度(30~120 ℃)和介质流速(2~12 m·s-1)对缓蚀性能的影响。结果表明:随缓蚀剂含量增加和预膜时间延长,缓蚀率增大,油管钢表面成膜效果提高;缓蚀剂质量浓度为300 mg·L-1,预膜时间为2 h时的缓蚀效果较好;随腐蚀温度升高,缓蚀剂的缓释率降低,预膜2 h试样的耐腐蚀性能先降低,当温度升到 80 ℃时耐腐蚀性最差,缓蚀剂开始失效;随介质流速增大,预膜2 h试样的腐蚀速率逐渐增大;当介质流速高于10 m·s-1时,预膜试样发生严重腐蚀,该缓蚀剂不再适用。
Abstract
P110S tubing steel was pre-filmed with imidazoline corrosion inhibitors, and then the corrosion test was performed. The effects of pre-film time (0.5-4 h), corrosion temperature (30-120 ℃) and medium flow velocity (2-12 m·s-1) on the corrosion inhibition performance were studied. The results show that with the increase of inhibitor content and pre-film time, the corrosion inhibition rate and the film formation effect on the tubing steel surface increased. The corrosion inhibition performance was relatively good at the inhibitor mass concentration of 300 mg · L-1and pre-film time of 2 h. With increasing temperature, the inhibitor inhibition rate decreased, the corrosion resistance of the 2 h pre-filmed sample decreased first and showed the worst at 80 ℃; the inhibitor started to fail. The corrosion rate of the 2 h pre-filmed sample increased with the flow velocity. When the medium flow velocity was higher than 10 m·s-1, the pre-filmed samples were seriously corroded, and the corrosion inhibitor was no longer applicable.
中图分类号 TG172 DOI 10.11973/jxgccl202006008
所属栏目 试验研究
基金项目 国家科技重大专项项目(2016ZX05052);中国石油天然气股份有限公司重大科技专项项目(2016E-0606)
收稿日期 2019/7/1
修改稿日期 2020/4/27
网络出版日期
作者单位点击查看
备注谢南星(1963-),男,四川射洪人,高级工程师,学士
引用该论文: XIE Nanxing,WANG Chuanlei,LI Yufei,ZHANG Lin,SHU Gang,LU Minxu. Effect of Pre-film Time, Corrosion Temperature and Medium Flow Velocity onCorrosion Inhibition Performance for Oil Well Pipe Inhibitor[J]. Materials for mechancial engineering, 2020, 44(6): 33~37
谢南星,汪传磊,李玉飞,张林,舒刚,路民旭. 预膜时间、腐蚀温度和介质流速对油井管缓蚀剂缓蚀性能的影响[J]. 机械工程材料, 2020, 44(6): 33~37
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参考文献
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【4】杜海燕,韩阗俐,路民旭,等.抗CO2腐蚀油气井缓蚀剂的研究与应用[J].表面技术,2006,35(1):77-79.
【5】平云峰,谭彭彭,曹成章,等.油气井二氧化碳腐蚀及其缓蚀研究[J].石油和化工设备,2008,11(5):62-66.
【6】王军,毕宗岳,张劲楠,等.油套管腐蚀与防护技术发展现状[J].焊管,2013,36(7):57-62.
【7】刘杰,李建东,尹志福,等.井下管柱腐蚀分析及缓蚀剂应用[J].腐蚀科学与防护技术,2016,28(1):95-96.
【8】任呈强,刘道新,白真权,等.咪唑啉衍生物在含H2S/CO2油气井环境中的缓蚀行为研究[J].天然气工业,2004,24(8):53-55.
【9】黄金营, 魏慧芳, 张利嫱,等. 咪唑啉油酰胺的合成及在油气井产出液中的缓蚀性能[J]. 油田化学, 2004, 21(3): 230-233.
【10】陈国浩.二氧化碳腐蚀体系缓蚀剂的缓蚀机理及缓蚀协同效应研究[D].北京:北京化工大学,2012.
【11】李芳,郝义磊,羊东明,等.塔河油田单井注采交替缓蚀剂的筛选与复配研究[J].表面技术,2018,47(3):217-223.
【12】刘淑坤,彭乔,王海潮.温度对气相缓蚀剂缓蚀效果的影响[J].材料保护,2002,35(8):12-13.
【13】何毅,范毅,丁忆鑫,等.流体环境对碳钢表面附着缓蚀剂膜的影响[J].腐蚀科学与防护技术,2015,27(1):31-36.
【14】刘金祥,尤龙,张军,等.温度对半胱氨酸缓蚀性能影响的实验评价与机理研究[J].化学学报,2010,68(18):1807-1812.
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