Modular ESP Protectors

Protect the motor with reliable oil reservoir chamber designs

Our patented modular ESP protector provides the ultimate protection available against well fluid entering the motor. There are three options for the oil reservoir chamber:

• The labyrinth section simply uses the differential weight of the fluid to create a barrier and a maze for the wellbore fluid to travel through before it enters the motor. These were the first protectors used and are still very popular in vertical wells.
• The positive seal protector, or elastomer bag, provides a barrier between the well fluids and the motor oil to allow operation in gaseous or deviated wells. The bags come in different materials depending on the application.
• The metal bellows is also a positive seal to well fluids and provides an impervious barrier to H₂S, which tends to permeate elastomers and enter the motor. The bellows is also rated for high-temperature applications up to 475 degF [246 degC].

In addition to the function of a seal, the ESP protector also serves as an oil reservoir for the motor, balances the internal pressure of the well fluid, and carries the thrust load of the pump.