The study of inhibitors for sour gas service
The function of corrosion inhibitors was investigated in controlling corrosion and related hydrogen entry into steel products in sour environments. Newly developed inhibitors, as well as commercially available ones, were examined through immersion tests of steels in NACE solution (NaCl 5% + CH/sub 3/COOH 0.5%, saturated with H/sub 2/S) containing an inhibitor. Highly effective inhibitors were found among organic nitrogen compounds with molecular weight more than 200. The substituted imidazolines with nine carbon atoms in the hydrophobic chain and with two aminoethylenes in the hydrophilic chain are the most efficient inhibitors. These imidazolines keep their inhibitive properties even with one tenth of the critical concentration being utilized in oil and gas fields over the temperature 25 to 60 C.
- Research Organization:
- Fundamental Research Laboratories, Nippon Steel Corporation, 1618, Ida, Nakahara-ku, Kawasaki, 211
- OSTI ID:
- 5884356
- Journal Information:
- Corrosion (Houston); (United States), Vol. 38:7
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
STEELS
CORROSION INHIBITORS
AMINES
CORROSION PROTECTION
ETHYLENE
HYDROGEN EMBRITTLEMENT
HYDROGEN SULFIDES
IMIDAZOLES
INTERGRANULAR CORROSION
MATERIALS TESTING
MOLECULAR WEIGHT
NATURAL GAS FIELDS
OIL FIELDS
ORGANIC NITROGEN COMPOUNDS
QUANTITY RATIO
SODIUM CHLORIDES
SOUR CRUDES
ALKALI METAL COMPOUNDS
ALKENES
ALLOYS
AZOLES
CHALCOGENIDES
CHEMICAL REACTIONS
CHLORIDES
CHLORINE COMPOUNDS
CORROSION
EMBRITTLEMENT
ENERGY SOURCES
FOSSIL FUELS
FUELS
GEOLOGIC DEPOSITS
HALIDES
HALOGEN COMPOUNDS
HETEROCYCLIC COMPOUNDS
HYDROCARBONS
HYDROGEN COMPOUNDS
IRON ALLOYS
IRON BASE ALLOYS
MINERAL RESOURCES
NATURAL GAS DEPOSITS
ORGANIC COMPOUNDS
PETROLEUM
PETROLEUM DEPOSITS
RESOURCES
SODIUM COMPOUNDS
SULFIDES
SULFUR COMPOUNDS
TESTING
020300* - Petroleum- Drilling & Production