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Author Mitchell, R. F. ♦ Allen, M. B.
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword PETROLEUM ♦ NATURAL GAS ♦ DRILLING EQUIPMENT ♦ FAILURES ♦ MECHANICAL VIBRATIONS ♦ SYSTEM FAILURE ANALYSIS ♦ FINITE ELEMENT METHOD ♦ NATURAL GAS WELLS ♦ OIL WELLS ♦ WELL DRILLING ♦ DRILLING ♦ EQUIPMENT ♦ NUMERICAL SOLUTION ♦ SYSTEMS ANALYSIS ♦ WELLS 020300* -- Petroleum-- Drilling & Production ♦ Natural GasDrilling, Production, & Processing
Abstract Axial and torsional vibration analysis of three bottomhole assemblies was unable to identify the cause of repeated washouts and twistoffs. Finite element analysis, involving the six degrees of freedom available to the BHA and taking into account wellbore trajectory, WOB and other variables, established lateral vibrations as the probable culprit. Failures occurred when operating at speeds and in the drillstring locations predicted.
Educational Use Research
Learning Resource Type Article
Publisher Date 1985-03-01
Publisher Place United States
Journal World Oil
Volume Number 200
Issue Number 4


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