System for pumping viscous fluid from a well
AssigneeCamco International Inc.
InventorsWoon Yung Lee, Diego Narvaez, Ketankumar K. Sheth, William B. Newberry
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Abstract
A system allows the pumping of viscous fluids from a wellbore. The system includes a submergible pump and a pump intake through which a fluid may be drawn. A submergible electric motor powers the submergible pump, and a heater is connected in the pumping system to heat the wellbore fluid. Additionally, a combination of heaters may be employed to heat the desired production fluid both externally to the pumping system and internally to the pumping system.
Claims23
An electric submergible pumping system for pumping fluids from a wellbore to a surface of the earth, comprising:
- a submergible pumping system including:
- a submergible pump;
- a submergible motor having a drive shaft coupled to the submergible pump;
- and
- a heater disposed between the submergible motor and the submergible pump, the heater having an axial opening through which the drive shaft extends.
A system for pumping a viscous fluid from a wellbore, comprising:
- a submergible pump;
- a pump intake through which a fluid is drawn;
- a submergible electric motor to power the submergible pump;
- a motor protector;
- and
- a heater, wherein the submergible pump, the pump intake, the submergible electric motor, the motor protector and the heater are sequentially arranged for placement in a wellbore, and further wherein the heater is connected intermediate the submergible pump and the submergible electric motor.
A system for pumping a viscous fluid disposed in a subterranean well, comprising:
- a heating chamber;
- a first pump disposed to pump a fluid into the heating chamber;
- and
- a second pump having a fluid intake disposed proximate the heating chamber, wherein the heating chamber the first pump and the second pump are connected in a pumping system that may be disposed in a wellbore.
An electric submergible pumping system for pumping fluids from a wellbore to a surface of the earth, comprising:
- a submergible pump;
- a pump intake;
- a submergible motor;
- a motor protector;
- and
- a heater, wherein the heater is internally, electrically coupled to the submergible motor, and further wherein the heater heats fluid flowing internally between the pump intake and the submergible.
Dependencies are inferred from the claim text.