METHOD TO DIAGNOSE FAULTS FOR OIL EXTRACTION SYSTEM WITH SURFACE-DRIVING PROGRESSIVE CAVITY PUMP USED

This article brings forward a new method to make fault diagnosis for oil extraction system with surface-driving progressive cavity pump used.It selects some predicament variants that represent the well production status through analyzing all of them.And the rules,which are used to derive the well status from the corresponding predicament variants,are also given.This method has shown its definite practicability after applied to some oil fields.