Corrosion effects of hydrogen sulfide on coiled tubing and carbon steel in hydrochloric acid
Coiled tubing is commonly used in oilwell drilling and stimulation. It has been reported to be less susceptible to acid attack than carbon steel in acidizing. Corrosion problems are frequently reported from field activities and include corrosion/erosion, galvanic attack, brine/oxygen/acid attack, and HCl/H{sub 2}S attack. In this study, coiled tubing was exposed to inhibited HCl acid in the presence and absence of H{sub 2}S. Four HCl inhibitors and one H{sub 2}S inhibitor were evaluated, and the corrosion rates of coiled tubing, carbon steel (J-55), and carburized steel were compared. Tests were conducted at atmospheric pressure for temperatures less than and equal to 200 F. At temperatures greater than 200 F; tests were conducted at 4,000 psi.
- OSTI ID:
- 536512
- Journal Information:
- JPT, Journal of Petroleum Technology, Vol. 49, Issue 9; Other Information: PBD: Sep 1997
- Country of Publication:
- United States
- Language:
- English
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