LINEAR HYDRAULIC PUMP AND ITS APPLICATION IN WELL PRESSURE CONTROL
First Claim
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1. An apparatus , comprising:
- a linear motor;
a fluid pump functionally connected to the linear motor, a fluid inlet of the fluid pump in fluid communication with a fluid source, a fluid outlet of the fluid pump in fluid communication with a well;
a pressure sensor in fluid communication with a subsurface well;
a controller functionally coupled to the linear motor and the pressure sensor, wherein the controller is configured to operate the fluid pump to maintain a selected pressure in the well.
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Abstract
An apparatus includes a linear motor and a fluid pump functionally connected to the linear motor. A fluid inlet of the fluid pump is in fluid communication with a fluid source. A fluid outlet of the fluid pump in fluid communication with a well. A pressure sensor is in fluid communication with the well. A controller is functionally coupled to the linear motor and the pressure sensor, wherein the controller is configured to operate the fluid pump to maintain a selected pressure in the well.
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Citations
20 Claims
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1. An apparatus , comprising:
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a linear motor; a fluid pump functionally connected to the linear motor, a fluid inlet of the fluid pump in fluid communication with a fluid source, a fluid outlet of the fluid pump in fluid communication with a well; a pressure sensor in fluid communication with a subsurface well; a controller functionally coupled to the linear motor and the pressure sensor, wherein the controller is configured to operate the fluid pump to maintain a selected pressure in the well. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method, comprising:
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measuring a fluid pressure in a well; operating a linear motor functionally coupled to a fluid pump at a rate related to a difference between a selected pressure and the measured fluid pressure, a fluid inlet of the fluid pump in fluid communication with a fluid source, a fluid outlet of the fluid pump in fluid communication with a well; and stopping operation of the linear motor when the measured pressure is substantially equal to the selected pressure. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
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Specification