Hydraulic System and Method of Monitoring
First Claim
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1. A method of monitoring a hydraulic system, comprising:
- coupling a hydraulic pump with a hydraulic motor via a hydraulic line;
deploying a pressure sensor to measure pressure in the hydraulic line;
processing consecutively recorded data points of a hydraulic pressure signal received from the pressure sensor to decompose the consecutively recorded data points into a series of data subsets representing scaled base functions localized in frequency and time;
using a processor to search the series of data subsets for failure signatures; and
outputting an indication as to whether a failure condition is found.
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Abstract
A technique involves monitoring a hydraulic system having a hydraulic pump coupled to a hydraulic motor which can be used to drive well related equipment. The system and methodology utilize sensors positioned to monitor parameters related to operation of the hydraulic pump and the hydraulic motor. A processor system is coupled to the sensors to obtain data output by the sensors. The processor system analyzes the sensor data for failure signatures that can be used to determine a failure or potential failure in the hydraulic system.
73 Citations
30 Claims
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1. A method of monitoring a hydraulic system, comprising:
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coupling a hydraulic pump with a hydraulic motor via a hydraulic line; deploying a pressure sensor to measure pressure in the hydraulic line; processing consecutively recorded data points of a hydraulic pressure signal received from the pressure sensor to decompose the consecutively recorded data points into a series of data subsets representing scaled base functions localized in frequency and time; using a processor to search the series of data subsets for failure signatures; and outputting an indication as to whether a failure condition is found. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method, comprising:
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deploying pressure sensors in a hydraulic system having a hydraulic motor powered by a hydraulic pump; operatively coupling the pressure sensors to a processing system; using the pressure sensors to obtain a certain number of consecutively recorded data points based on hydraulic pressure signals; and processing the consecutively recorded data points on the processor system so that the consecutively recorded data points are decomposed into a series of data subsets representing scaled base functions that can be used to determine a failure signature related to operation of the hydraulic system. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18)
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19. A system, comprising:
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a hydraulic pump; a hydraulic motor coupled to the hydraulic pump via a hydraulic line; a plurality of sensors positioned to monitor parameters related to operation of the hydraulic pump and the hydraulic motor; and a processor system coupled to the plurality of sensors to obtain data from the sensors, the processor system having a processor unit to analyze the data for failure signatures in frequency and time domains. - View Dependent Claims (20, 21, 22, 23, 24, 25)
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26. A method, comprising:
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measuring hydraulic pressure in a hydraulic line connecting a hydraulic motor with a hydraulic pump; monitoring hydraulic pump speed with a hydraulic pump speed sensor; monitoring hydraulic motor speed with a hydraulic motor speed sensor; outputting data on the hydraulic pressure, hydraulic pump speed, and hydraulic motor speed to a processor system; and using the processor system to automatically monitor the data for a failure condition related to operation of the hydraulic motor and the hydraulic pump by searching for failure signatures in the data. - View Dependent Claims (27, 28, 29, 30)
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Specification