APPARATUS AND METHOD OF CONNECTING TUBULARS

A method for making up a tubular joint comprises rotating a first tubular relative to a second tubular at a first speed to engage the first and second tubulars, measuring a torque between the first and second tubulars while rotating, and starting an automatic speed reduction operation to reduce rota...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	RUEHMANN, Rainer, HEBEBRAND, Christina, Karin
Format:	Patent
Sprache:	eng ; fre ; ger
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 for making up a tubular joint comprises rotating a first tubular relative to a second tubular at a first speed to engage the first and second tubulars, measuring a torque between the first and second tubulars while rotating, and starting an automatic speed reduction operation to reduce rotating from the first speed to zero upon detection of a trigger condition. Starting an automatic speed reduction operation comprises calculating a set point of a relative rotational speed between the first and second tubulars using the measured torque, and using the calculated set point with a controller to control the relative rotational speed between the first and second tubulars.