Cutting tool with pivotally fixed cutters
AssigneeEquinor Energy AS
InventorsMorten Eidem, Gaute Grindhaug
Life of this patent
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Abstract
A tool for use in a borehole to perform a milling, under reaming, or other cutting operation includes a tool body configured for rotation about its longitudinal axis, within the borehole, and a set of cutters, the set including two or more cutters which, at least in a deployed configuration, extend outwardly from the tool body and are fixedly coupled together whilst being pivotally coupled to the tool body substantially on said axis so that the cutters rotate with the tool body whilst being pivotable together relative to the tool body during cutting.
Claims6
A tool for use in a borehole to perform a milling, under reaming, or other cutting operation and comprising:
- a tool body configured for rotation about its longitudinal axis, within the borehole;
- a set of cutters, the set comprising two or more cutters which, at least in a deployed configuration, extend outwardly from the tool body and are fixedly coupled together whilst being pivotally coupled to the tool body substantially on said axis so that the cutters rotate with the tool body whilst being pivotable together relative to the tool body during cutting;
- and
- a set of arms,
- wherein each of two or more cutters is attached to one corresponding arm of the set of arms, and the set of arms are connected together at a center point of the tool body, and
- wherein, in the deployed configuration, the set of arms are secured together at a fixed angle, whilst being configured to pivot about a pivot point so that a downward force on one of the two or more cutters is transferred to an upward force on another cutter of the two or more cutters.
Dependencies are inferred from the claim text.