The roller centralizer is used to centralize the sucker rod and reduce friction, and also reduces the wear of the sucker rod and oil pipe.
Roller centralizers should be installed at:
●On the first two or three rods above the bottom hole pump.
●Intermittently installed between the entire sucker rod or oil pipe.
●The section where the wellbore is deflected.
● Polished rods are sealed on the first two or three rods under the box.
