Drillstring anchor

A drillstring anchor 200 for reacting torque from a drillstring to a wellbore includes a channel 201 for receiving a downhole portion of a drillstring 202 so as to be rotationally engaged therewith: a gripper; an energy store; and an actuator capable of being driven from the energy store to cause th...

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Bibliographic Details
Main Authors Graham Watson, Matus Gajdos, Anthony Richard Glover, Mark Webb, Martin Harrall
Format Patent
LanguageEnglish
Published 16.08.2023
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
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Summary:A drillstring anchor 200 for reacting torque from a drillstring to a wellbore includes a channel 201 for receiving a downhole portion of a drillstring 202 so as to be rotationally engaged therewith: a gripper; an energy store; and an actuator capable of being driven from the energy store to cause the gripper to adopt one of a first state in which it is urged outwardly for gripping the wellbore and a second, retracted state. Also claimed is a drillstring anchor where there are multiple segments (703, 704, 705, 706, fig7a) disposed along the drillstring anchor which can be driven outwardly independently of each other.
Bibliography:Application Number: GB20220001938