PATENT CLAIM ANALYSIS

Application Number: 16504965
Application Type: Utility
Filing Date: 2019-07
Publication Date: 2019-10
Patent Classification: ["702", "007000"]

Abstract:
Current supplied to electrical submersible pumps in wells is monitored, and signal processing based on wavelet analysis and phase diagram analysis is performed on the data obtained from monitoring. An incipient malfunction of the electrical submersible pump, such as one due to scale build-up in and around the pump, can be detected at an early stage.

Claim (Index 12):
An apparatus for monitoring and operating an electrical submersible pump disposed in a hydrocarbon well, the apparatus comprising:\n a logging system configured to record pump motor electrical current logs of the operating electrical power provided to a pump motor of the electrical submersible pump during pumping of the well fluids; a conditioning circuit configured to convert the pump motor electrical current logs to a format for processing; a frequency spectrum analyzer configured to generate, based on the pump motor electrical current logs, measures of energy density present during pumping of the well fluids in individual frequency ranges of a frequency spectrum of the pump motor electrical current; a dynamic behavior analyzer module, comprising:\n a signal embedding module configured to, based on the pump motor electrical current logs, superimpose a set of added time series signals of different characteristic frequencies into the pump motor electrical current logs to identify dynamic behavior performance changes of the pump motor during pumping of the well fluids from changes in the pump motor electrical current logs; and \n a phase diagram reconstruction module configured to, based on the pump motor electrical current with the superimposed time series signals sample the received pump motor electrical current with the superimposed time series signals at different time intervals and form a measure of the identified dynamic behavior performance changes of the pump motor based on fluctuations in the pump motor electrical current during pumping of the well fluids; \n an interface module configured to generate pump motor diagnostic information for monitoring the behavior and performance of the pump motor to detect disturbances in performance of the pump motor during pumping of the well fluids, the pump motor diagnostic information comprising:\n (a) characteristic frequencies and amplitude peaks as a function of frequency in the frequency spectrum of the pump motor electrical current measures generated by the frequency spectrum analyzer; and \n (b) phase diagrams of the dynamic behavior performance changes of the pump motor formed by the phase diagram reconstruction module; and \n a diagnostic system configured to:\n predict, based on the pump motor diagnostic information, a failure of the pump motor; and \n reduce, in response to predicting the failure of the pump motor, an operating speed of the pump motor.

Metadata:
- Claim Count in Document: 9.0
- Percentile: 100.0
- Lexical Diversity: 1.32609
- Patent Class: 702.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['13712444', '16257609', '16257598', '16257575', '12641583']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.2610954675306912
- 35 USC 102 Novelty (BERT): 0.591444850427479
- Combined Prediction Score: 0.29413040582037
- Mean Citation Score: 423.276652
- Max Citation Score: 496.25775
- Similarity Product: 454.2292795559764

Labels:
- Claim Label 101: 1
- Claim Label 102: 1
- Claim Label 103: 1
- Claim Label 112: 1
- Combined Label: 1
- Label 101 Adjusted: 1

Dataset: test