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US 7,525,264 B2Granted
Shunt regulation apparatus, systems, and methods
AssigneeHalliburton Energy Services, Inc.
InventorCarl Dodge
Life of this patent
Estimating the term…
Abstract
In some embodiments, an apparatus and a system, as well as a method and an article, may include receiving shunt current in one or more conductors according to a sensed component of power distributed by the conductors through one or more transformers coupled to the conductors and determined by an inductance associated with the transformers and a capacitance associated with the conductors.
Claims34
An apparatus, comprising:
- a motor positioned downhole;
- a first transformer having a primary winding coupled to power input of the motor;
- and
- a downhole logging line cable to couple to the primary winding of the first transformer to receive shunt current determined by an inductance associated with the first transformer and a capacitance associated with the downhole logging line cable according to a sensed component of power distributed by the downhole logging line cable through the first transformer, wherein the shunt current is received as part of power dissipation from power that is in excess of power required to operate the motor, wherein the shunt current into the primary winding of the first transformer is to dissipate the excess of power into the downhole logging cable.
1 more element
A system, comprising:
- a tool body;
- a motor positioned downhole;
- a first transformer included in the tool body, the first transform having a primary winding coupled to power input of the motor;
- and
- a downhole logging line cable to couple to the primary winding of the first transformer to receive shunt current determined by an inductance associated with the first transformer and a capacitance associated with the downhole logging line cable according to a sensed component of power distributed by the downhole logging line cable through the first transformer, wherein the shunt current is received as part of power dissipation from power that is in excess of power required to operate the motor, wherein the shunt current into the primary winding of the first transformer is to dissipate the excess of power into the downhole logging cable.
2 more elements
A method, comprising:
- receiving shunt current in a drill string, to dissipate power that is excess of power required to operate a motor downhole, according to a sensed component of power distributed by the drill string through a transformer coupled to the drill string and determined by an inductance associated with the transformer and a capacitance associated with the drill string, wherein the excess of power is dissipated into the drill string.
An article including a machine-accessible medium having associated information, wherein the information, when accessed, results in a machine performing:
- receiving shunt current in a downhole logging line cable, to dissipate power that is excess of power required to operate a motor downhole, according to a sensed component of power distributed by the downhole logging line cable through a transformer coupled to the downhole logging line cable and determined by an inductance associated with the transformer and a capacitance associated with the downhole logging line cable, wherein the excess of power is dissipated into the downhole logging line cable.
Dependencies are inferred from the claim text.