温度对CO2饱和页岩气压裂液环境中N80和TP125V钢腐蚀行为影响研究

黄家和, 袁曦, 陈文, 闫文静, 金正宇, 柳海宪, 刘宏芳, 刘宏伟

Effect of Temperature on Corrosion Behavior of Pipeline Steels N80 and TP125V in Artificial CO2-saturated Fracturing Fluid of Shale Gas

HUANG Jiahe, YUAN Xi, CHEN Wen, YAN Wenjing, JIN Zhengyu, LIU Haixian, LIU Hongfang, LIU Hongwei

表3 TP125V钢极化曲线的拟合结果

Table 3 Tafel fitted results of the polarization curves of TP125V steel at different temperatures

T℃ BaV·dec-1 BcV·dec-1 Ecorr vs Ag/AgClV IcorrA·cm-2 Corrosion rate mm·a-1 60 0.316 -0.145 -0.607 1.32×10-7 0.002 90 0.246 -0.085 -0.615 4.04×10-6 0.047 100 0.130 -0.179 -0.784 4.63×10-5 0.544 110 0.173 -0.135 -0.616 6.74×10-7 0.008 120 0.218 -0.068 -0.426 3.51×10-7 0.004