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US 2020/0270948 A1Published application
Supplemental power unit for drilling rig
AssigneeSchlumberger Technology Corporation
InventorsSeetharam KOTHURU, Brian MCKINNEY, Ramakrishna MADHIREDDY
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Abstract
Systems and methods for supplementing power to a drilling operation's generator and motor systems are disclosed. A power unit is connected to a power grid between generators and motors for a drilling operation. The power unit saps and stores energy from the electrical grid when the generator has excess capacity and providing power to the motors when the demand from the motors exceeds the available capacity of the generators.
Claims21
A system for providing power, the system comprising:
- one or more generators configured to provide a predetermined quantity of energy;
- one or more motors configured to draw power from the generators to perform one or more operations;
- an electrical grid system configured to convey electrical power from the generators to the motors;
- and
- a power unit electrically coupled to the electrical grid and being configured to:
- selectively draw power from the electrical grid system;
- store power drawn from the electrical grid system;
- and
- selectively provide power to the motor to enable the motors to perform one or more of the operations, wherein the power provided by the power unit is greater than the predetermined quantity of energy.
6 more elements
A method, comprising:
- coupling a power unit to an electrical grid system, the electrical grid system being operatively coupled between a generator system and a motor system, wherein the generator system is configured to power the motor system;
- determining a first time period during which available power from the generator system is greater than the power required by the motor system, and a second time period during which power required by the motor system is greater than a quantity available from the generator system;
- sapping power from the electrical grid system during the first time period;
- and
- providing power to the electrical grid system during the second time period.
2 more elements
A power system, comprising:
- a generator;
- a prime mover;
- an electrical bus operatively coupled between the generator and prime mover, wherein power from the generator is delivered to the prime mover via the electrical bus;
- a power storage unit;
- a power receiving unit operatively coupled to the electrical bus and configured to sap power from the electrical bus and to store the power in the power storage unit;
- a power delivery unit operatively coupled to the electrical bus and configured to deliver the power from at least one of the power storage unit and the electrical bus to the prime mover;
- and
- a control unit operatively coupled to the power receiving unit and to the power delivery unit and configured to instruct the power receiving unit to sap power and to instruct the power delivery unit to deliver the power.
5 more elements
Dependencies are inferred from the claim text.