Sealless multiphase screw-pump-and-motor package
First Claim
1. A pump, including a motor and a pump housing, for pumping mixed gas and liquid, said pump comprising:
- two intermeshed screw members for providing progressive cavities for transporting mixed fluids, within a pumping cavity, from a suction passage to a discharge reservoir of said pump housing; and
means for providing cooling and lubrication to said motor and to bearings and timing gears of the screw members.
4 Assignments
0 Petitions
Accused Products
Abstract
A pump is disclosed, including a motor and a pump housing, for pumping mixed gas and liquid. The pump includes two intermeshed screw members for providing progressive cavities for transporting mixed fluids, within a pumping cavity, from a suction passage to a discharge reservoir of the pump housing. It further uses pumped product to provide cooling and lubrication to the motor and to bearings and timing gears of the screw members. By using pumped product for lubrication and cooling, the need for seals is eliminated, thereby reducing the need for maintenance. This makes the pump package advantageous for subsea deployment for use in pumping nearly depleted wells which may be manifolded together to provide adequate product flow.
-
Citations
9 Claims
-
1. A pump, including a motor and a pump housing, for pumping mixed gas and liquid, said pump comprising:
-
two intermeshed screw members for providing progressive cavities for transporting mixed fluids, within a pumping cavity, from a suction passage to a discharge reservoir of said pump housing; and
means for providing cooling and lubrication to said motor and to bearings and timing gears of the screw members. - View Dependent Claims (2)
-
-
3. A multiphase screw pump-and-motor package comprising:
-
a pump body, including a housing with suction and discharge passages, a pumping chamber, and a discharge fluid reservoir between said discharge passage and said pumping chamber;
at least two intermeshed screw members supported in bearings and disposed within the pumping chamber for pumping fluid between said suction and discharge passages;
an electrical motor drivably connected to said screw members;
means for timing rotation of said screw members to prevent interference; and
means for using pumped product to provide cooling and lubricating fluid to said motor, said bearings, and said timing means. - View Dependent Claims (4, 5, 6, 7, 8, 9)
-
Specification