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US 2010/0038610 A1Published application
Drawworks having annulus rotating union with brake cooling system
OwnerCharles Glen Franksinventor
Life of this patent
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Abstract
A drawworks having a drum spool, a drum shaft concentrically supported by the drum spool, a rotary union, brake assemblies and a brake cooling system which circulates a cooling fluid through the brake assemblies to thereby reduce the operating temperature of the brake assemblies. The brake cooling system includes a cooling fluid passage that extends through the drum spool, the rotary union and the brake assemblies.
Claims20
A drawworks apparatus comprising:
- a frame having a working area within inner surfaces thereof;
- a drum spool for raising and lowering items down a well bore via a length of cable wound thereon, the drum spool extending through and rotatably supported by the frame outside the working area thereof;
- a drum shaft concentrically supported by the drum spool in a manner in which the drum shaft is isolated from wireline pull from the drum spool;
- an annulus rotating union provided at each distal end of the drum spool;
- a brake assembly operatively connected to the drum spool;
- and
- a brake assembly cooling system including a cooling fluid line in fluidic communication with a cooling fluid supply and extending through the rotating union, the drum spool, the drum shaft, the brake assembly and the annulus rotary union for reducing the operating temperature of the brake assembly during operation of the drawworks apparatus.
4 more elements
A drawworks apparatus comprising:
- a frame having a working area within inner surfaces thereof;
- a drum spool extending through and rotatably supported by the frame outside the working area thereof;
- a drum shaft concentrically supported by the drum spool;
- a first brake assembly operatively connected to the main drum spool at an on-operator area of the drawworks assembly;
- a second brake assembly operatively connected to the main drum spool at an off-operator area of the drawworks assembly;
- and
- a brake assembly cooling system including a cooling fluid line in fluidic communication with the first and second brake assemblies which circulates a cooling fluid through the first and second brake assemblies to thereby reduce the operating temperature of the first and second brake assemblies during operation of the drawworks apparatus.
4 more elements
A drawworks apparatus comprising:
- a drum spool;
- a drum shaft concentrically supported by the drum spool;
- a first brake assembly operatively connected to the main drum spool at an on-operator side of the drawworks assembly;
- a second brake assembly operatively connected to the main drum spool at an off-operator side of the drawworks assembly;
- and
- a brake assembly cooling system which circulates a cooling fluid through the first and second brake assemblies to thereby reduce the operating temperature of the first and second brake assemblies,
- wherein the brake assembly cooling system includes a cooling fluid passage having a first cooling fluid passage portion at the on-operator side of the drawworks assembly, a second cooling fluid passage portion at the off-operator side of the drawworks assembly and in fluidic communication with the first cooling fluid passage portion, and a third cooling fluid passage portion extending between and in fluidic communication with the first and second cooling fluid passage portions.
4 more elements
Dependencies are inferred from the claim text.