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

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...

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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
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creator BROWN, GARRY
LAIRD, WILLIAM
MCGILLIVRAY, MILES
HONAN, HUGH MICHAEL
description 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.
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subjects 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
title METHOD AND APPARATUS FOR CONTROLLING REACTIVE TORQUE ON A DRILL STRING WHILE DRILLING
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