Progressing Cavity Pumps In Light Oil

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The Problem

Progressing Cavity Pumps are engineered for large variations in gravity; however light oil does have its unique concerns. Light oil typically has high percentages of BTX (Benzen, Toluene, Xylene). The molecular structure of BTX enable it to attack or attach to the elastomer, causing aggressive swelling and softening. This reaction is mainly due to the high chemical reactive nature of the base double bonded cyclic ring of benzene. Light oil is also usually found at deeper, warmer reservoirs causing the elastomer to break down at a faster rate.

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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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Reverse Geometry Progressing Cavity Pump

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The Left Helix uses a reverse geometry Progressing Cavity Pump to defend against sand buildup, eliminate pump inlet blocking and prevent bridging.

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Top Ten Must-Knows About Progressing Cavity Pumps

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Progressing Cavity Pump Rotor and Stator Fit

Centralizers - One Easy Way to Eliminate Rod Tubing Wear in a PC PumpPC Pumps in Coal Bed Methane (CBM) WellsLearn How To Fix PC Pump Elastomer BlisteringFactors to consider when using PC PumpsINCREASE PC PUMPS PRODUCTION - TOP 5 Top Ten Must-Knows About Progressing Cavity PumpsPosts by categoryartificial lift (3) Beam Pump (1) CBM (1) centralizers (1) coal bed methane (1) corrosion (1) debonded (1) elastomer (4) elastomer blistering (1) electrical submersible pump (1) ESP (1) factors (1) gas lift (1) HR PCP (1) HRPCP (1) Kudu (2) Left Helix (1) light oil (1) multiphase fluids (1) oilfield (1) pc pump (3) pc pumps (3) production optimization (2) progressing cavity pump (7) progressing cavity pumps (2) pump (1) Pump jack (1) reverse rotor (1) rotor (1) sandy (1) sandy heavy oil (1) stator (2) Top ten must knows about Progressing Cavity Pumps (1) troubleshooting (2) Follow Me

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Keeping Up with Corrosion in Progressing Cavity Pump wells.

Progressing Cavity Pump Rotor and Stator FitCentralizers - One Easy Way to Eliminate Rod Tubing Wear in a PC PumpPC Pumps in Coal Bed Methane (CBM) WellsLearn How To Fix PC Pump Elastomer BlisteringFactors to consider when using PC PumpsINCREASE PC PUMPS PRODUCTION - TOP 5 Top Ten Must-Knows About Progressing Cavity PumpsPosts by categoryartificial lift (3) Beam Pump (1) CBM (1) centralizers (1) coal bed methane (1) corrosion (1) debonded (1) elastomer (4) elastomer blistering (1) electrical submersible pump (1) ESP (1) factors (1) gas lift (1) HR PCP (1) HRPCP (1) Kudu (2) Left Helix (1) light oil (1) multiphase fluids (1) oilfield (1) pc pump (3) pc pumps (3) production optimization (2) progressing cavity pump (7) progressing cavity pumps (2) pump (1) Pump jack (1) reverse rotor (1) rotor (1) sandy (1) sandy heavy oil (1) stator (2) Top ten must knows about Progressing Cavity Pumps (1) troubleshooting (2) Follow Me

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