RECIRCULATION PUMPING SYSTEM FOR INSTALLATION BELOW THE PERFORATIONS IN A CASED WELL BORE

摘要

An electrical submersible pump (ESP) having a means to recirculate fluid below the motor of the ESP for cooling purposes. By using a recirculating means, an ESP can then be placed below the perforations in a well casing, thereby taking advantage of gas separation from the fluid before the fluid enters the pump intake. Three embodiments are disclosed: a fluid tap in the production pump housing to which tubing is connected to recirculate the fluid; a recirculation pump that shares an intake with the production pump wherein the recirculation pump is used to recirculate the fluid; and a recirculation pump and a production pump that each have a separate intake wherein the recirculation pump is used to recirculate the fluid.