含氧注气驱高Ca2+ 浓度工况下C110钢腐蚀产物膜演变及腐蚀行为研究

含氧注气驱高Ca²⁺ 浓度工况下C110钢腐蚀产物膜演变及腐蚀行为研究

赵密锋, 胡芳婷, 刘艳明, 宋文文, 谢俊峰, 吕祥鸿, 代盼, 胡航波

Evolution of Corrosion Products Film and Corrosion Behavior of C110 Steel Under High-temperature and High-pressure O₂-CO₂ Atmosphere in a Simulated Drilling Fluid with High Mineral Content and High Concentration of Ca²⁺

ZHAO Mifeng, HU Fangting, LIU Yanming, SONG Wenwen, XIE Junfeng, LV Xianghong, DAI Pan, HU Hangbo

表2 C110钢在不同实验条件下的极化曲线拟合参数

Table 2 Polarization curve fitting parameters of C110 steel under different experimental conditions

P $_{O_{2}}$ / MPa	E_corr / mV	I_corr / μA·cm^-2	b_a / mV·dec^-1	b_c / mV·dec^-1	R_p / Ω·cm²
0	-622	2.007	141.06	-156.54	4371.60
0.004	-574	5.761	60.90	-132.27	1596.21
0.04	-559	13.943	48.84	-127.99	714.57
0.4	-547	890.56	45.75	-	7.92