Causes and prevention of vibration induced failures in submergible oilwell pumping equipment
Vibration phenomena in Electric Submergible Pumping Systems is rarely identified as the cause of premature system failure. This is the result of a number of factors. The first is a lack of sensed and recorded downhole operational parameters pertinent to the mechanical condition of the machine. The second arises from the practice of attempting restart several times before pulling a failed unit; this procedure has the effect of causing additional damage and thus masking any evidence of vibration. Finally, a vibration induced failure can eventually be manifested in other, more common failure modes which are ultimately credited with causing the event. The point is that failure, regardless of cause, cannot be addressed unless the mode of initiation is understood. This paper suggests that vibration initiated failures, while not frequent, are more prevalent than previously believed. It is also suggested that improvements in reliability will be observed when the phenomena is fully understood and addressed from the equipment design, application, and operation viewpoint. This work describes the vibration problem and the conditions which increase its probability of occurrence. It will also suggest measures to avoid the phenomena, and illustrate this with known field case studies that have been confirmed by experimental laboratory work.
- Research Organization:
- TRW Reda Pump Co.
- OSTI ID:
- 5453285
- Report Number(s):
- CONF-820927-
- Journal Information:
- Soc. Pet. Eng. AIME, Pap.; (United States), Vol. SPE11043; Conference: 57. AIME Society of Petroleum Engineers annual technical conference and exhibition, New Orleans, LA, USA, 26 Sep 1982
- Country of Publication:
- United States
- Language:
- English
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