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Defender – Seal

A NEW HERO IS RELEASED.

defender

Defender

The most technically Advanced Super Sand Seal in the World.

Features

  • Available in labyrinth or bag seal configurations
  • Designed to be run in tandem configurations
  • Engineered to equalize downhole pressure
  • Heavy-duty thrust bearings
  • Configurations for high horsepower, extreme conditions

Benefits

  • Blocks damaging fluid intrusion
  • Extends ESP operational life
  • Reduces downtime
  • Mitigates issues with thermal expansion of motor oil
  • Configurations for high horsepower, extreme conditions

Summit ESP sealing mechanisms are designed to extend the operational life of electric submersible pumping (ESP) systems by equalizing downhole pressure and preventing the intrusion of damaging wellbore fluids. Configurations for Summit ESP seals can be customized for service in extreme downhole environments.

In all our ESP systems, the seal section is located between the intake and motor, where its principal functions are to protect the motor and support the downward thrust generated by the pump. The seal is equipped with a shaft-mounted thrust runner that transfers down thrust forces from the pump shaft to a heavy-duty thrust bearing that is fixed to the housing. The positioning of this bearing allows Summit ESP pumps to be run in tandem configurations without the need for integrated thrust handling capabilities.

In a typical installation, an ESP system is submerged in fluid and lowered often several thousand feet into the wellbore. As well fluid enters the wellbore, the fluid column above the ESP increases, generating a pressure differential between the motor oil and the fluid in the annulus. Summit ESP seal sections equalize the pressures while preventing motor damage by blocking the invasion of well bore fluids. Furthermore, Summit ESP seals are designed to handle the thermal expansion of motor oil during regular operation of the pumping system.

Seal section chambers are installed as either labyrinth or bag configurations. Labyrinth con- figurations permit well fluid to enter a chamber through a top-mounted vent port thereby allowing pressures to equalize. The well fluid, which typically is heavier than motor oil, migrates to the bottom of the chamber where it is isolated from the next chamber by virtue of a breather tube designed allow only clean, non-damaging, motor oil floating at the top of the chamber to pass between chambers.

Bag seals use a flexible elastomer bag contained within the seal housing to segregate and protect the motor oil from well fluid. As with a labyrinth seal, well bore fluid is allowed to enter the housing through a vent port to create pressure equilibrium, but the bag acts as a flexible barrier to prevent contamination of the motor oil. Generally, both style chambers may be used in vertical applications and bag seals are used when the pump must be set in a well bore with a horizontal deviation of more than 45°. In high horsepower applications or those with extreme reliability concerns, Summit ESP seals can be run in tandem configurations.

defender seal
338 Series 400 Series 513 Series
Housing Diameter In
mm
3.78
96
100
102
5.13
130
Shaft Diameter In
mm
0.875
22
0.875
22
1.0625
27
Shaft Area in2
mm2
0.601
388
0.601
388
0.886
572
Max ambient temp
325
163
325
163
325
163
Std Shaft BHP Limit HP
kW
283
211
283
211
628
468
HS Shaft BHP Limit HP
kW
472
352
472
352
1048
781
Max Thrust Bearing load (lbs) (Std) HP
kW
472
352
472
352
1048
781
Max Thrust Bearing Load (lbs) (HL) 3213 4680 5106