Auxiliary vehicle for electrically powering a well pipe extractor
AssigneeCalifornia Production Service, Inc.
InventorSydney V. Sutton
Life of this patent
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Abstract
An electrically powered oil well pipe extractor includes a standard well servicing rig having a winch driven by a combustion engine. An auxiliary vehicle has an electric motor connected through a transmission or torque convertor, through a drive shaft, to the winch on the well servicing rig. The combustion engine is disengaged from the winch and the winch is driven by the electric motor on the auxiliary vehicle during pipe extraction operations at a well site having electric power available. Exhaust emissions and noise are significantly reduced.
Claims13
An electrically powered well pipe extractor comprising:
- a well servicing rig including:
- a rotatable winch drum;
- a cable wrapped around the winch drum for extracting well pipe;
- a combustion engine for rotating the winch drum;
- means for mechanically engaging and disengaging the combustion engine and the winch;
- an auxiliary vehicle having an electric motor including an output shaft;
- means for transferring power from the output shaft to the winch drum;
- and means for connecting the electric motor to a source of electric power.
A bore hole rig having a drawworks and road wheels, comprising:
- a combustion engine on the rig;
- a transmission connected to the combustion engine and shiftable to mechanically link the drawworks or the road wheels to the combustion engine;
- an electrically powered auxiliary drive unit, separate from the rig;
- and
- a coupling for transferring mechanical power from the auxiliary unit to the drawworks on the rig.
Dependencies are inferred from the claim text.