Inspection interval guidelines to reduce drillstring failures

Journal Article · Fri Sep 01 00:00:00 EDT 1989 · SPE (Society of Petroleum Engineers) Drilling Engineering; (USA)

DOI:https://doi.org/10.2118/17207-PA· OSTI ID:5510404

Dale, B A ^[1]

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1. Exxon Production Research Co., Houston, TX (USA)

This paper discusses inspection interval guidelines developed to reduce the occurrence of costly drillstring fatigue failures. The guidelines are based on a state-of-the-art fracture mechanics model and incorporate reliability data of commercial inspection services using conventional nondestructive testing techniques. On the basis of extensive full-scale testing, the model was found to predict fatigue-crack-growth behavior reliably. By establishing inspection intervals on the basis of fatigue-crack growth, inspection services are systematically and cost-effectively specified to achieve acceptable reliability (or risk). Simple equations and charts are presented in terms of practical drilling parameters to reduce typical downhole fatigue failures.

• OSTI ID: 5510404
• Journal Information: SPE (Society of Petroleum Engineers) Drilling Engineering; (USA), Journal Name: SPE (Society of Petroleum Engineers) Drilling Engineering; (USA) Vol. 4:3; ISSN 0885-9744; ISSN SDENE
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020200* -- Petroleum-- Reserves
Geology
& Exploration
42 ENGINEERING
420500 -- Engineering-- Materials Testing
BOREHOLES
CAVITIES
CRACK PROPAGATION
DRILLING
DRILLING EQUIPMENT
EQUIPMENT
FAILURES
FATIGUE
FRACTURE MECHANICS
INSPECTION
MATERIALS TESTING
MECHANICAL PROPERTIES
MECHANICS
NONDESTRUCTIVE TESTING
RECOMMENDATIONS
SCALE MODELS
STRUCTURAL MODELS
TESTING
WELL DRILLING