Rotary expansible chamber devices – Multistage – Sliding abutment
Patent
1996-05-20
1998-07-28
Vrablik, John J.
Rotary expansible chamber devices
Multistage
Sliding abutment
418124, 418179, 418188, 418225, 418249, 175107, 166312, F01C 1356, F01C 1904, E21B 402, E21B 2100
Patent
active
057855099
ABSTRACT:
A drilling motor has been developed with a hollow tubular stator having at least one rod recess therein and an inlet port therethrough corresponding to each of the at least one rod recess; a rod movably disposed in each of the at least one rod recess; a tubular rotor movably disposed within the stator for rotation therein, the tubular rotor having a central motive fluid flow channel therethrough and extending along the length of the rotor, the rotor having one or more radial exhaust flow channels therethrough for providing a motive fluid flow path to the central motive fluid flow channel from at least one action chamber between the hollow tubular stator and tubular rotor; the tubular rotor having at least one rotor seal; and the at least one action chamber defined by an interior surface of the hollow tubular stator and an exterior surface of the tubular rotor, each of the at least one action chamber sealed at one end by the rod and at another end by one of the at least one rotor seals. A rotor has been developed with a central motive fluid flow channel and one or more radial flow channels interconnected therewith for fluid to flow from action chambers, e.g. action chambers between the rotor and a stator of a drilling motor.
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Harris Gary L.
Susman Hector D.
McClung Guy
Vrablik John J.
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