Drilling evaluation based on coupled torsional vibrations

Drilling evaluation based on coupled torsional vibrations

A method of estimating a stability value of a rotating downhole component includes rotating the downhole component at a varying first rotary speed, the varying first speed having a plurality of first rotary speed values, and identifying an oscillation of the downhole component. The method also inclu...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Hauptverfasser: Andreas Hohl, Vincent Kulke
Format: Patent
Sprache:eng
Schlagworte:
EARTH DRILLING
EARTH DRILLING, e.g. DEEP DRILLING
FIXED CONSTRUCTIONS
MINING
OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS
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Beschreibung
Zusammenfassung:A method of estimating a stability value of a rotating downhole component includes rotating the downhole component at a varying first rotary speed, the varying first speed having a plurality of first rotary speed values, and identifying an oscillation of the downhole component. The method also includes acquiring measurement data from a sensor, the measurement data indicative of a measured parameter related to the oscillation of the downhole component at the plurality of first rotary speed values, and estimating the stability value of the rotating downhole component as a function of an operational parameter based on the acquired measurement data.