X65管线钢在油水两相界面处的CO<sub>2</sub>腐蚀行为研究

X65管线钢在油水两相界面处的CO₂腐蚀行为研究

贾巧燕, 王贝, 王赟, 张雷, 王清, 姚海元, 李清平, 路民旭

Corrosion Behavior of X65 Pipeline Steel at Oil-Water Interface Region in Hyperbaric CO₂ Environment

JIA Qiaoyan, WANG Bei, WANG Yun, ZHANG Lei, WANG Qing, YAO Haiyuan, LI Qingping, LU Minxu

表1 等效电路各参数值

Table 1 Parameter values of the equivalent circuit

Condition		R_s / Ω·cm²	CPE_film		R_f / Ω·cm²	CPE_dl		R_ct / Ω·cm²	R_L / Ω·cm²	L / H
Variety	t / h	R_s / Ω·cm²	Y₁ / S· $s^{n_{1}}$ ·cm^-2	n₁	R_f / Ω·cm²	Y₂ / S· $s^{n_{2}}$ ·cm^-2	n₂	R_ct / Ω·cm²	R_L / Ω·cm²	L / H
Blank	1	4.005	767.1	0.778	28.30	4640	1.000	19.09	58.36	7.363
	3	4.575	1901	0.861	17.25	11710	1.000	7.534	52.77	5.754
	5	4.547	2723	0.868	13.99	13610	1.000	6.884	44.38	5.451
	7	4.619	4817	0.859	11.47	16610	1.000	6.958	36.31	5.549
	9	4.921	5061	0.962	8.265	34240	1.000	4.150	---	---
	11	4.808	5908	0.982	7.948	44920	1.000	4.112	---	---
10SH	1	4.934	1130	0.627	37.99	64360	1.000	5.764	76.59	70.98
	3	4.972	10330	0.659	21.53	54020	1.000	6.45	62.23	41.10
	5	4.964	9694	0.706	18.70	64510	1.000	6.884	44.38	5.451
	7	4.978	9276	0.766	15.42	62770	1.000	6.497	61.35	34.68
	9	5.039	9663	0.782	14.34	73720	0.963	11.08	61.49	35.19
	11	4.966	9095	0.825	13.73	59450	1.000	7.244	63.42	41.26
OAI	1	571.7	---	---	---	1.56	0.593	947.8	---	---
	3	398.6	---	---	---	1.50	0.592	864	---	---
	5	14.81	---	---	---	2.68	0.8	779.7	246	735.7
	7	13.58	---	---	---	4.44	0.8	529.7	1128	328.6
	9	5.423	127.1	0.520	18.81	3.49	0.596	686.4	1278	426.8
	11	5.51	118.8	0.523	19.01	3.34	0.606	680.7	1238	519.2