Troubleshooting a Debonded Progressing Cavity Pump Elastomer

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A debonded elastomer is usually associated with short run lives. The elastomer might look like long intact pieces that have fallen away from the stator. The elastomer will also be pulled clean away from the inner steel wall of the stator.

Possible Causes:

Debonding might be caused by improper application of the bonding agent, which secures the elastomer to the inner steel stator wall. Extreme heat in the Progressing Cavity Pump can also cause debonding due to high bottom hole temperature or heat generated in the pump.

Potential Solutions:

If high bottom hole temperature is suspected a higher temperature elastomer or all metal pump might be required. Heat caused in the Progressing Cavity Pump could benefit from a lower efficiency pump, a reduction of gas entering the pump through a lower intake, or installation of a gas separator. Operating the Progressing Cavity Pump at a lower RPM can also reduce heat generated in the pump.

To learn more about troubleshooting common Progressing Cavity Pump failures, download our Troubleshooting Guide on the right.

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