Alloys having improved resistance to hydrogen embrittlement

Patent · Tue May 27 00:00:00 EDT 1986

OSTI ID:5716529

Kane, R D; Greer, J B; Jacobs, D F; Berkowitz, B J

A tubular metal product is described for use in sour gas wells characterized by resistance to hydrogen sulfide embrittlement at temperatures up to about 500/sup 0/F consisting essentially of an alloy having the composition 0.015% carbon, 19.9% to 20.0% chromium, 34.47% to 35.03% nickel, 9.5% to 10.0% molybdenum, 0.5% to 0.82% titanium, 0.015% boron, 0% to 0.34% iron, and the balance cobalt, except for impurities, the tubular product having been cold worked at least sufficiently to impart increased strength and from 50% to 63% and thereafter heat treated in the range 1350/sup 0/F to 1500/sup 0/F.

• Assignee: Exxon Production Research Co., Houston, TX
• Patent Number(s): US 4591393
• OSTI ID: 5716529
• Resource Relation: Patent File Date: Filed date 1 Mar 1978
• Country of Publication: United States
• Language: English

Related Subjects

03 NATURAL GAS
36 MATERIALS SCIENCE
CHROMIUM ALLOYS
CORROSION RESISTANCE
COBALT ALLOYS
HYDROGEN SULFIDES
CORROSIVE EFFECTS
MOLYBDENUM ALLOYS
NATURAL GAS WELLS
WELL CASINGS
NICKEL ALLOYS
HYDROGEN EMBRITTLEMENT
MATERIALS
BORON ADDITIONS
CARBON ADDITIONS
COLD WORKING
HEAT TREATMENTS
IMPURITIES
IRON ADDITIONS
MECHANICAL PROPERTIES
TITANIUM ADDITIONS
VERY HIGH TEMPERATURE
ALLOYS
BORON ALLOYS
CHALCOGENIDES
EMBRITTLEMENT
FABRICATION
HYDROGEN COMPOUNDS
IRON ALLOYS
MATERIALS WORKING
SULFIDES
SULFUR COMPOUNDS
TITANIUM ALLOYS
WELLS
030300* - Natural Gas- Drilling
Production
& Processing
360105 - Metals & Alloys- Corrosion & Erosion
360103 - Metals & Alloys- Mechanical Properties