Permanent magnet direct drive top drive
AssigneeCanrig Drilling Technology Ltd.
InventorKevin R. Williams
Life of this patent
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Abstract
A drive system (40) for a drilling has a housing (42) with an interior chamber (60), a stator (62) positioned within the interior chamber (60), a rotor (64) positioned in interior of the stator (62) and within in the interior chamber (60) of the housing (42), and a drive plate (66) affixed to the rotor (64). The rotor (64) has a plurality of permanent magnets in spaced relation around a periphery of the rotor. The stator (62) has a plurality of windings extending in spaced relation around an interior diameter of the stator so as to as be cooperative with the plurality of permanent magnets. The drive plate (66) has an interior passageway suitable for joining to a stem of the drill string.
Claims20
A drive system for a drilling rig comprising:
- a housing having an interior chamber;
- a stator positioned in said interior chamber of said housing;
- and
- a rotor positioned in interior of said stator and within in said interior chamber of said housing, said rotor having a plurality of permanent magnets in spaced relation around a periphery of said rotor, said rotor having means connected thereto for directly coupling said rotor to a stem of a drill string of the drilling rig.
A drilling said comprising:
- a drilling rig having a rig floor;
- a drill string extending through said rig floor;
- and
- a top drive system directly coupled to an end of said drill string and supported by said drill rig above said rig floor, said top drive system comprising:
- a housing having an interior chamber;
- a stator positioned in said interior chamber of said housing;
- and
- a rotor positioned in an interior of said stator and within said interior chamber of said housing, said rotor having a plurality of permanent magnets in spaced relation around a periphery of said rotor, said rotor having means thereon for directly coupling said rotor to the drill string.
A drive system for a drilling rig comprising:
- a housing having an interior chamber;
- a stator positioned in said interior chamber of said housing;
- a rotor positioned in interior of said stator and within in said interior chamber of said housing, said rotor having a plurality of permanent magnets in spaced relation around a periphery of said rotor;
- and
- a drive plate affixed to said rotor, said drive plate having an interior passageway suitable for joining to a stem of a drill sting.
Dependencies are inferred from the claim text.