西南石油大学学报(自然科学版) ›› 2011, Vol. 33 ›› Issue (1): 151-155.DOI: 10.3863/j.issn.1674-5086.2011.01.028

• 油气化学工程与化工 • 上一篇    下一篇

青海油田三厂硫化氢形成机理及腐蚀性研究

张永成1 王洪辉1,2李应祥3 赵海平3 池晓彪3   

  1. 1.成都理工大学能源学院,四川 成都 610059; 2. 四川文理学院, 四川 达州 635000;3. 中国石油青海油田采油三厂,青海 芒崖 816400
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2011-02-20 发布日期:2011-02-20

GENERATION MECHANISM AND CORROSION FOR HYDROGEN SULFIDE IN OIL WELL OF 3RD OIL PLANT IN QINGHAI OILFIELD

ZHANG Yong-cheng1 WANG Hong-hui1,2 LI Ying-xiang3 ZHAO Hai-ping3 CHI Xiao-biao3   

  1. 1.College of Energy Resource,Chengdu University of Technology,Chengdu Sichuan 610059,China;2.Sichuan University of Arts and Science,Dazhou Sichuan 635000,China;3.No.3 Oil Plant,Qinghai Oilfield Company,CNPC,Mangya Qinghai 816400,China
  • Received:1900-01-01 Revised:1900-01-01 Online:2011-02-20 Published:2011-02-20

摘要: 对油气田硫化氢生成机理进行归类分析,结合青海油田采油三厂硫化氢井的分布及成藏特征、地质因素,认为该地区油井硫化氢是由于硫酸盐热化学还原反应(TSR)形成的。根据三厂硫化氢浓度及现场工况进行腐蚀性研究,结果表明,青海油田采油三厂硫化氢对钢材20#和N80的腐蚀属于轻度到中度,腐蚀产物以Fe、Cl、S、Mn元素为主,腐蚀机理为氯离子破坏腐蚀产物膜以及硫化氢的电化学腐蚀作用。

关键词: 硫化氢, 硫酸盐热化学还原反应, 腐蚀形貌, 能量色散谱

Abstract: Based on formation mechanism of hydrogen sulfide for oil and gas field,the paper analyzes the reservoir characteristics and geological factors,H2S of NO.3 Oil Plant may be generated by sulfate thermochemical reaction (TSR).Corrosion studies are carried out for H2S concentration and situation of the oilfield,and the result shows that 20# and N80 of steel corrosion are moderate to mild.Corrosion result consists mainly of Fe,Cl,S and Mn elements and corrosion mechanism may be corrosion product film of H2S destroyed by chloride ions and the electrochemical corrosion of hydrogen sulfide.

Key words: hydrogen sulfide, sulfate thermochemical reaction (TSR), corrosion morphology, energy dispersive spectrum

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