Self-regulating turbine flow
First Claim
Patent Images
1. A downhole assembly comprising:
- a base pipe defining an interior for receiving a fluid from an exterior of the base pipe;
a power generator configured generate power with the fluid and direct the fluid to the interior of the base pipe; and
a flow control device configured to receive a flow of the fluid from the exterior of the base pipe, the flow control device comprising;
a nozzle;
a valve; and
a piston having a first head and a second head, the piston being moveable between multiple positions to simultaneously move the first head within the nozzle to adjust an amount of the flow directed to the power generator and to move the second head within the valve to adjust an amount of the flow directed to the interior of the base pipe without passing through the power generator.
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Abstract
A downhole assembly includes a base pipe, a power generator, and a flow control device positioned within a flow path for a fluid that extends between the exterior and the interior of the base pipe. The flow control device can control an amount of incoming flow that is directed to the power generator and an amount that is directed to the interior of the base pipe without passing through the power generator. A flow through the power generator can be maintained so that power is provided throughout operation of the flow control device.
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Citations
20 Claims
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1. A downhole assembly comprising:
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a base pipe defining an interior for receiving a fluid from an exterior of the base pipe; a power generator configured generate power with the fluid and direct the fluid to the interior of the base pipe; and a flow control device configured to receive a flow of the fluid from the exterior of the base pipe, the flow control device comprising; a nozzle; a valve; and a piston having a first head and a second head, the piston being moveable between multiple positions to simultaneously move the first head within the nozzle to adjust an amount of the flow directed to the power generator and to move the second head within the valve to adjust an amount of the flow directed to the interior of the base pipe without passing through the power generator. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A downhole assembly comprising:
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a base pipe defining an interior for receiving a fluid from an exterior of the base pipe; a power generator configured generate power with the fluid and direct the fluid to the interior of the base pipe; a flow control device configured to receive a first flow of the fluid from the exterior of the base pipe and adjustably control an amount of the first flow directed to the power generator and an amount of the first flow directed to the interior of the base pipe without passing through the power generator; and a bypass line configured to receive a second flow of the fluid from the exterior of the base pipe and direct the second flow to the power generator without passing through the flow control device. - View Dependent Claims (11, 12)
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13. A downhole assembly comprising:
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a base pipe defining an interior for receiving a fluid from an exterior of the base pipe; a power generator configured generate power with the fluid and direct the fluid to the interior of the base pipe; and a flow control device configured to receive a flow of the fluid from the exterior of the base pipe, the flow control device comprising; a piston head moveable between multiple positions within a piston chamber to control an amount of the flow directed to the power generator; and an opening extending through the piston head and providing fluid communication between the exterior of the base pipe and the power generator while the piston head is in any one of the multiple positions. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
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Specification