Pump Operation Procedure with Piston Position Sensor
First Claim
1. A method for calibrating a pump assembly that includes a displacement unit and one or more pumps that activate the displacement unit, the method comprising:
- characterizing the one or more pumps to determine one or more performance characteristics of the one or more pumps;
under operating conditions of a first environment, calibrating a sensor associated with the displacement unit;
under operating conditions of a second environment, calibrating the sensor associated with the displacement unit; and
under operating conditions of the second environment, calibrating the one or more pumps to determine one or more performance characteristics of the one or more pumps at the operating conditions of the second environment.
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Accused Products
Abstract
A method, according to one or more aspects of the present disclosure, for calibrating a pump assembly includes characterizing one or more pumps of the pump assembly to determine one or more performance characteristics of the one or more pumps. The method may also include calibrating a sensor associated with a displacement unit of the pump assembly. Calibrating the sensor may include calibrating the sensor under operating conditions of a first environment and under operating conditions of a second environment. Under the operating conditions of the second environment, the one or more pumps can also be to determine one or more performance characteristics of the one or more pumps at the operating conditions of the second environment.
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Citations
20 Claims
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1. A method for calibrating a pump assembly that includes a displacement unit and one or more pumps that activate the displacement unit, the method comprising:
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characterizing the one or more pumps to determine one or more performance characteristics of the one or more pumps; under operating conditions of a first environment, calibrating a sensor associated with the displacement unit; under operating conditions of a second environment, calibrating the sensor associated with the displacement unit; and under operating conditions of the second environment, calibrating the one or more pumps to determine one or more performance characteristics of the one or more pumps at the operating conditions of the second environment. - 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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providing a downhole tool having a pump assembly, the pump assembly comprising; a displacement unit including a piston having a first piston head positioned in a first cylinder, a second piston head positioned in a second cylinder, and a sensor that detects the position of the piston; a first pump that selectively activates the displacement unit; and a second pump that selectively activates the displacement unit; characterizing the first and second pumps to determine performance characteristics of the first and second pumps under a plurality of predefined operating conditions; calibrating the sensor prior to positioning the downhole tool in a borehole; calibrating the sensor while the downhole tool is positioned in the borehole; calibrating the second pump while the downhole tool is positioned in the borehole. - View Dependent Claims (14, 15, 16)
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17. A method, comprising:
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providing a pump assembly, comprising; a displacement unit including a piston having a first piston head positioned in a first cylinder, a second piston head positioned in a second cylinder, and a sensor; a first pump that selectively activates the displacement unit; and a second pump that selectively activates the displacement unit; monitoring a signal produced by the sensor; determining the position of the piston using the signal produced by the sensor; and calibrating at least one of the first and second pumps using the position of the piston. - View Dependent Claims (18, 19, 20)
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Specification