Development of an improved austenitic drill collar alloy

Journal Article · Tue Sep 01 04:00:00 EDT 1987 · Mater. Performance; (United States)

OSTI ID:6094988

Cordea, J N; Sheth, H V; Jasper, J C

A metallurgical analysis and property comparison are made among several alloys in the development of an improved, high-strength, nonmagnetic alloy for directional drilling applications. Armco Non-Mag 618 (AN618), a nitrogen-bearing, low-Ni stainless steel, displays significant improvement over T-287 and Gammaloy, previous-generation drill collar alloys. Data are included that show higher-strength AN618 and T-287 to be very stable austenitic alloys, with improved resistance to stress corrosion cracking in solutions that simulate many different downhole conditions, including very high chloride-containing muds at boiling temperatures. Their nonmagnetic stability is excellent, allowing high reliability in directional drilling applications.

• Research Organization: Armco Research and Technology, 703 Curtis St., Middletown, OH 45043
• OSTI ID: 6094988
• Journal Information: Mater. Performance; (United States), Journal Name: Mater. Performance; (United States) Vol. 26:9; ISSN MTPFB
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360103* -- Metals & Alloys-- Mechanical Properties
360105 -- Metals & Alloys-- Corrosion & Erosion
42 ENGINEERING
420206 -- Engineering-- Mining & Drilling Equipment & Facilities-- (1980-1989)
422000 -- Engineering-- Mining & Underground Engineering-- (1980-)
ALLOYS
AUSTENITIC STEELS
BOILING
CHEMICAL REACTIONS
CHLORIDES
CHLORINE COMPOUNDS
CHROMIUM ALLOYS
COMPARATIVE EVALUATIONS
CORROSION
CORROSION RESISTANCE
CORROSION RESISTANT ALLOYS
CRACKS
DIRECTIONAL DRILLING
DRILLING
DRILLING EQUIPMENT
DRILLING FLUIDS
DRILLS
EQUIPMENT
FLUIDS
FRACTURE PROPERTIES
HALIDES
HALOGEN COMPOUNDS
IRON ALLOYS
IRON BASE ALLOYS
MECHANICAL PROPERTIES
PHASE TRANSFORMATIONS
RELIABILITY
ROCK DRILLING
SLEEVES
STAINLESS STEELS
STEELS
STRESS CORROSION
TEMPERATURE EFFECTS