Development of nickel-base, corrosion-resistant alloy OCTG (oil country tubular goods)

Technical Report · Sun Jan 01 04:00:00 EST 1989

OSTI ID:7221219

Ishizawa, Y; Takaoka, T; Misao, H; Masamura, K; Matsushima, J

Influence of composition of Ni-Cr-Mo alloys on the resistance to SCC and hydrogen embrittlement in sour gas environment was investigated in order to develop a new alloy for oil country tubular goods (OCTG). SCC resistance in high temperature sour environments with elemental sulfur increased with increasing Mo content and also was improved by a small addition of W, Cu and Nb. Increase in Ni content reduced the resistance to hydrogen embrittlement. Tubulars of 110 ksi grade of which composition was designed based on the experimental studies exhibited excellent properties for sour gas services.

• Research Organization: Nippon Kokan K.K., Tokyo (Japan)
• OSTI ID: 7221219
• Report Number(s): PB-90-121450/XAB
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
022000* -- Petroleum-- Transport
Handling
& Storage
36 MATERIALS SCIENCE
360103 -- Metals & Alloys-- Mechanical Properties
360105 -- Metals & Alloys-- Corrosion & Erosion
ALLOYS
CHEMICAL REACTIONS
CHROMIUM ALLOYS
CORROSION
CORROSION RESISTANCE
CORROSIVE EFFECTS
CRACKS
EMBRITTLEMENT
ENERGY SOURCES
FOSSIL FUELS
FUELS
HYDROGEN EMBRITTLEMENT
INDUSTRY
MATERIALS
MOLYBDENUM ALLOYS
NICKEL ALLOYS
PETROLEUM
PETROLEUM INDUSTRY
PIPES
SOUR CRUDES
STRESS CORROSION