针对目前高含H2S和CO2环境井下管材电化学腐蚀研究不深入的现状,采用动电位扫描技术分析了在H2S/CO2环境中环境腐蚀影响因素(CO2,pH值和Cl-)对P110套管钢电化学腐蚀行为的影响.在溶解H2S和CO2且pH=2.7的含Cl-溶液中,当混合气体中CO2含量分别为17%,34%,50%时,腐蚀电流密度(Jcorr)分别为0.328 49,0.295 73,0.237 09 mA/cm2,在含50%H2S环境中,腐蚀电流密度为0.272 89mA/cm2.与单一含H2S腐蚀环境相比,在酸性环境中CO2促进金属腐蚀,而在近中性环境中,CO2抑制金属腐蚀.在含Cl-溶液中,pH值降低,Jcorr,增加,而在不合Cl-溶液中,pH值降低,Jcorr降低.在pH=2.7的溶液中,当Cl-存在时,Jcorr提高;而在pH=5.9溶液中,当Cl-存在时Jcorr降低.
参考文献
| [1] | 邓洪达,李春福,罗平亚.含硫气田腐蚀研究现状[J].材料保护,2008(03):50-54. |
| [2] | Harlen T;Gunvaldsen S;Blaker F .Effects of buffers on hydrogen evolution at iron electrodes[J].Electrochimica Acta,1984,29:1 163. |
| [3] | Singh M M;Gupta A .Corrosion behavior of mild steel in acetic acid solutions[J].Corrosion,2000,56:371. |
| [4] | Vracar L;Drazic D M .Influence of chloride on adsorption on hydrogen evolution reaction on iron[J].Journal of Electroanalytical Chemistry,1992,339:269. |
| [5] | Allam A M;Ateya B G;Picketing H W .Effect of chloride ions on adsorption and permeation of hydrogen in iron[J].Corrosion,1997,53:284-289. |
| [6] | Choi Y S;Kim J G .Aqueous corrosion behavior of weathering steel and carbon steel in acid-chloride environments[J].Corrosion,2000,56:1 202-1 210. |
| [7] | Cheng X L;Ma H Y;Zhang J P et al.Corrosion of iron in acid solution with hydrogen sulfide[J].CORROSION,1998,54:369-376. |
| [8] | Ma H;Cheng X;Li G et al.The influence of hydrogen sulfide on corrosion of iron under different conditions[J].Corrosion Science,2000,42:1 669-1 683. |
| [9] | Yanakawa K;Nishimura R .Hydrogen permeation of carbon steel in weak alkaline solution containing hydrogen sulfide and cyanide ion[J].Corrosion,1999,55:24-31. |
| [10] | Waard C D;Milliams D E .Carbonic acid corrosion of steel[J].Corrosion,1975,31(05):177-181. |
| [11] | Ogundele G I;White W E .Some observation on corrosion of carbon steel in aqueous environment containing carbon dioxide[J].Corrosion,1986,42(02):71-78. |
| [12] | Rehan H H;Salih S A;El-Daley H et al.Effect of Sulfied Ions on the Corrosion Behaviour of Mild Steel in Acetate Buffer[J].Collection of Czechoslovak Chemical Communications,1993,58:547-554. |
| [13] | Vedage H;Ramanarayanan T A;Mumford J D et al.Electrochemical growth of iron sulfide films in H2S saturated chloride media[J].Corrosion,1993,49:114-121. |
| [14] | Veloz M A;Gonzalez' I .Electrochemical study of carbon steel corrosion in buffered acetic acid solutions with chlorides and H2S[J].Electrochimica Acta,2002,48:135-144. |
| [15] | Smith J S;Miller J D A .Nature of sulphides and their corrosive effect on ferrous metals-review[J].British Corrosion Journal,1975,10(03):136-143. |
| [16] | 姜放,戴海黔,曹小燕,黄红兵.油套管在CO2和H2S共存时的腐蚀机理研究[J].石油与天然气化工,2005(03):213-215. |
| [17] | N.Sridhar;D.S.Dunn;A.M.Anderko .Effects of Water and Gas Compositions on the Internal Corrosion of Gas Pipelines - Modeling and Experimental Studies[J].Corrosion: The Journal of Science and Engineering,2001(3):221-235. |
| [18] | Sarclisco J B;Wright W B;Greco E C .Corrosion of Iron in an H2S-CO2-H2O System:Corrosion Film Properties on Pure Iron[J].Corrosion,1963,19:354-359. |
| [19] | Sardisco J B;Pitts R E .Corrosion of Iron in an H2S-CO2-H2O System -Composition and Protectiveness of the Sulfide Film as a Function of pH[J].Corrosion,1965,21:351-359. |
| [20] | Huang H;Shaw W J D .Electrochemical aspects of cold work effect on corrosion of mild steel in sour gas environments[J].Corrosion,1992,48(11):931-939. |
| [21] | Lin K;Lee J .A mechanistic modeling of carbon dioxide corrosion of mild steel in the presence of hydrogen sulfide[D].Ohio:Ohio University,2004. |
| [22] | 魏宝明.金属腐蚀理论及应用[M].北京:化学工业出版社,1984:88. |
| [23] | Kawashima A;Hashimoto K;Shimodaira S .Hydrogen Electrode Reaction and H Embrittlement of Mild Steel in H2S Solutions[J].Corrosion,1976,32:321. |
| [24] | Iofa Z A;Batrakov V V;Cho N B .Influence of anion absorption on the action of inhibitors on the acid corrosion of iron and cobalt[J].Electrochimica Acta,1964,6:1 645. |
| [25] | 夏玉宇.化学实验手册[M].北京:化学工业出版社,2004:155. |
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