Research on Fault Diagnosis Method of Electric Submersible Plunger Pump Lifting Technology

Electric submersible plunger pump is a new rodless lifting technology proposed for unconventional oil reservoirs. Platform directional wells and highly deviated wells. It has a broad application prospect. The study of its fault diagnosis method is helpful to improve the reliability of the process. Carry out research on the structure, principle and motion law of submersible reciprocating pumping units, establish the theoretical model of the lifting process, propose the optimal design of submersible linear motors, fault diagnosis methods based on power curve monitoring, new low-cost solid chemical wax prevention methods, and Process, fiberglass cable laying composite coiled tubing technology and a series of fault diagnosis measures. The application results show that the thrust output capability of the submersible linear motor and its control system is significantly improved, the motor is flexible to start, stop, and drive, the machine vibration is significantly reduced, and the entire process reliability is effectively improved; the real-time fault monitoring and diagnosis system can wax the tubing in time Early warning of failures is conducive to exploring reasonable wax removal laws; new low-cost solid chemical wax removal methods and processes effectively reduce the waxing rate; the introduction and testing of glass fiber reinforced plastic cable composite coiled tubing technology points out the direction for the next scientific research. It has certain practical significance for oilfield production and scientific research.