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 • Previous Articles     Next Articles

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

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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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