Baker Hughes Corporation

Olivier J-m Hoffmann

Jayesh Rameshlal Jain

Leroy William Ledgerwood, Iii

In one aspect, a method of determining the presence of whirl for a rotating tool is disclosed that in one embodiment includes obtaining measurements (a) of a parameter relating to the whirl of the tool along a first axis and measurements (a) of the parameter along a second axis of the tool, determining a first whirl in a time domain for the tool using aand ameasurements, determining a second whirl rate for the tool in a frequency domain from aand ameasurements and determining the presence of the whirl from the first whirl rate and second whirl rate. The method further quantifies the whirl of the tool from the first and second whirl rates.

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The Woodlands, TX, United States of America

Olivier J-m Hoffmann