JOURNAL ARTICLE
Cracking Nonmagnetic Drill Collars Prompts Analysis and Corrosion Specification
Abstract
ABSTRACT Thums Long Beach Company had experienced a 400%increase in stainless steel drill collar failures in a three month period. By means of failure analysis and field evaluations, the failure mechanism was identified as intergranular stress corrosion cracking. With proper drill collar specifications and alloy selections the failures and related costs were eliminated.
Keywords:
Collar Intergranular corrosion Drill Stress corrosion cracking Cracking Corrosion Failure mechanism Drill pipe Stress (linguistics) Geotechnical engineering Pile Metallurgy Forensic engineering Materials science Mining engineering Geology Engineering Structural engineering Composite material
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Topics
Hydrogen embrittlement and corrosion behaviors in metals
Physical Sciences → Materials Science → Metals and Alloys
Fatigue and fracture mechanics
Physical Sciences → Engineering → Mechanics of Materials
Non-Destructive Testing Techniques
Physical Sciences → Engineering → Mechanical Engineering
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