Resistance of line pipe steels to wet sour gas
Journal Article
·
· Corrosion (Houston); (United States)
Line pipe steels with excellent resistance to wet sour gas are urgently needed because of increased use of sour gas reserves that have a higher hydrogen sulfide concentration, and because of higher operating pressures. The authors conducted extensive analyses to explore the effects of metallurgical factors on the resistance of line pipe steels to hydrogen induced cracking (HIC) and sulfide stress cracking (SSC). Both extensive desulfurization and complete inclusion shape control proved essential in eliminating potential HIC formation sites. To prevent HIC propagation, it was necessary to reduce hardness in the segregation zone, which was achieved by optimizing the chemical compositions of steels. Microstructure homogenization and complete elimination of inclusions improved SCC resistance in line pipe steels. These findings have dramatically helped improve the manufacturing conditions of line pipe steels for sour gas service.
- Research Organization:
- Fukuyama Research Laboratories, Nippon Kokan K.K.(NKK), Kokan-cho, Fukuyama
- OSTI ID:
- 5129551
- Journal Information:
- Corrosion (Houston); (United States), Journal Name: Corrosion (Houston); (United States) Vol. 40:9; ISSN CORRA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
03 NATURAL GAS
032000* -- Natural Gas-- Transport
Handling
& Storage
36 MATERIALS SCIENCE
360103 -- Metals & Alloys-- Mechanical Properties
360105 -- Metals & Alloys-- Corrosion & Erosion
ALLOYS
CHALCOGENIDES
CHEMICAL REACTIONS
CORROSION
CORROSION RESISTANCE
CORROSION RESISTANT ALLOYS
CRACK PROPAGATION
ENERGY SOURCES
FLUIDS
FOSSIL FUELS
FUEL GAS
FUELS
GAS FUELS
GASES
HYDRAULIC TRANSPORT
HYDROGEN COMPOUNDS
HYDROGEN SULFIDES
IRON ALLOYS
IRON BASE ALLOYS
NATURAL GAS
PIPELINES
PRESSURE EFFECTS
STEELS
STRESS CORROSION
STRESS INTENSITY FACTORS
SULFIDES
SULFUR COMPOUNDS
SULFUR CONTENT
TRANSPORT
032000* -- Natural Gas-- Transport
Handling
& Storage
36 MATERIALS SCIENCE
360103 -- Metals & Alloys-- Mechanical Properties
360105 -- Metals & Alloys-- Corrosion & Erosion
ALLOYS
CHALCOGENIDES
CHEMICAL REACTIONS
CORROSION
CORROSION RESISTANCE
CORROSION RESISTANT ALLOYS
CRACK PROPAGATION
ENERGY SOURCES
FLUIDS
FOSSIL FUELS
FUEL GAS
FUELS
GAS FUELS
GASES
HYDRAULIC TRANSPORT
HYDROGEN COMPOUNDS
HYDROGEN SULFIDES
IRON ALLOYS
IRON BASE ALLOYS
NATURAL GAS
PIPELINES
PRESSURE EFFECTS
STEELS
STRESS CORROSION
STRESS INTENSITY FACTORS
SULFIDES
SULFUR COMPOUNDS
SULFUR CONTENT
TRANSPORT