METHOD AND APPARATUS FOR CONTROLLING REACTIVE TORQUE ON A DRILL STRING WHILE DRILLING

A method and apparatus for controlling reactive torque on a drill string while drilling. The apparatus includes a housing and a tubular mandrel. The housing has a flow passage extending therethrough. The tubular mandrel is rotatably mounted to the housing coaxially with an outlet of the fluid flow p...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
Hauptverfasser:	BROWN, GARRY, LAIRD, WILLIAM, MCGILLIVRAY, MILES, HONAN, HUGH MICHAEL
Format:	Patent
Sprache:	eng ; fre
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
Online-Zugang:	Volltext bestellen
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Beschreibung
Zusammenfassung:	A method and apparatus for controlling reactive torque on a drill string while drilling. The apparatus includes a housing and a tubular mandrel. The housing has a flow passage extending therethrough. The tubular mandrel is rotatably mounted to the housing coaxially with an outlet of the fluid flow passage. Fluids exiting through the outlet of the fluid flow passage pass through the tubular mandrel. A ratchet mechanism is used for controlling rotation of the tubular mandrel so that the tubular mandrel rotates freely in a clockwise direction and does not rotate in a counterclockwise direction. In accordance with the method, the apparatus is suspended from a service rig with a drill string coupled to the tubular mandrel. When positioned, as described, the apparatus resists reactive torque acting upon the drill string.