HYDRAULIC SYSTEM AND METHOD OF MONITORING
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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.
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Citations
59 Claims
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1-30. -30. (canceled)
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31. A method of monitoring a hydraulic system deployed on a surface of a well site, comprising:
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coupling a hydraulic pump adapted for use in at least one of a well cementing operation, a well stimulation operation, and a coiled tubing service 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 in frequency and time domains; and outputting an indication as to whether a failure condition of the hydraulic system is found. - View Dependent Claims (32, 33, 34, 35, 36, 37, 38, 39, 40)
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41. A method, comprising:
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deploying pressure sensors in a hydraulic system located on a surface of a well site and adapted for use in at least one of a well cementing operation, a well stimulation operation, and a coiled tubing service, the 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 in frequency and time domains of the hydraulic system. - View Dependent Claims (42, 43, 44, 45, 46, 47, 48)
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49. A system deployed on a surface of a well site, 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 and indicate a failure condition of one of the hydraulic pump, the hydraulic motor and the hydraulic line. - View Dependent Claims (50, 51, 52, 53, 54, 55)
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56. A method, comprising:
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measuring hydraulic pressure in a hydraulic line connecting a hydraulic motor with a hydraulic pump adapted for use in at least one of a well cementing operation, a well stimulation operation, and a coiled tubing service; 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 frequency and time domains of the data. - View Dependent Claims (57, 58, 59)
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Specification