Alloys having improved resistance to hydrogen embrittlement

Patent · Tue May 27 04:00:00 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
• Country of Publication: United States
• Language: English

Related Subjects

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