Corrosion inhibitors for sour oilfield environment (H2S corrosion)

Saviour A. Umoren, Moses M. Solomon, Viswanathan S. Saji

Research output: Chapter in Book/Conference proceedingBook Chapterpeer-review

14 Citations (Scopus)


Lower-grade steel materials are the most commonly used construction materials for oil and gas wells due to their low cost and high performance. However, they are susceptible to corrosion when they come in contact with corrosive environments that are highly acidic. In oil wells, particularly deep oil wells, hydrogen sulfide (H2S) is commonly found. The dissolution of H2S gas in produced water makes the fluid corrosive. The use of corrosion inhibitors is perhaps the most practical and cost-effective means of controlling corrosion of low carbon steels in the sour environment. In this chapter, typical corrosion inhibitors used in oil and gas fields to control the internal corrosion of oilfield equipment caused by H2S are being examined. The inhibitors found to be effective are polar functional compounds, with many being based on nitrogen-containing compounds, such as amines, imidazolines, and quaternary ammonium salts. Drawbacks of these compounds in practical applications and potentials of future developments are discussed.

Original languageEnglish
Title of host publicationCorrosion Inhibitors in the Oil and Gas Industry
Number of pages26
ISBN (Electronic)9783527822126
ISBN (Print)9783527346189
Publication statusPublished - 29 Jan 2020
Externally publishedYes


  • Corrosion
  • HS
  • Inhibitor
  • Oil and gas

ASJC Scopus subject areas

  • General Engineering


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