Wells – Processes – Heating – cooling or insulating
Patent
1996-01-16
1998-12-08
Dang, Hoang
Wells
Processes
Heating, cooling or insulating
166 57, 1661055, 166369, 417370, 4174238, E21B 4316, E21B 4338
Patent
active
058457097
ABSTRACT:
An electrical submersible pump (ESP) having tubing for recirculating fluid below the motor of the ESP for cooling purposes. By recirculating fluid below the motor, 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.
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R. W. Cramer, Chevron U.S.A. Inc. and J. L. Bearden, Centrilift-Hughes, copyright 1985, Development and Application of a Downhole Chemical Injection Pump for Use in ESP Applications.
Mack John J.
Wilson Brown Lyle
Baker Hughes Incorporated
Bradley James E.
Dang Hoang
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