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Bottom hole hollow core electric submersible pumping system

a technology of electric submersible pumping and hollow core, which is applied in the direction of pumps, mechanical equipment, liquid fuel engines, etc., can solve the problems of difficult use of external power supply and control cables

Inactive Publication Date: 2009-06-04
STELLARTON TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0013]In one embodiment, the system further comprises a motor control section, which houses means for controlling pump operation, and which ...

Problems solved by technology

Because it is advantageous to use coiled tubing as the production tubing, use of an external power supply and control cable can be difficult.

Method used

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  • Bottom hole hollow core electric submersible pumping system
  • Bottom hole hollow core electric submersible pumping system
  • Bottom hole hollow core electric submersible pumping system

Examples

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Embodiment Construction

[0022]The present invention relates to an electric submersible pumping system. When describing the present invention, all terms not defined herein have their common art-recognized meanings. To the extent that the following description is of a specific embodiment or a particular use of the invention, it is intended to be illustrative only, and not limiting of the claimed invention. The following description is intended to cover all alternatives, modifications and equivalents that are included in the spirit and scope of the invention, as defined in the appended claims.

[0023]In the following description and claims, references to “top” and “above” shall mean closer to the surface end of the system, while references to “bottom” or “below” shall mean closer to the downhole end of the system. Reference to a horizontal direction shall mean a direction perpendicular to the longitudinal axis of the production string, including the motor and gearbox sections of the system. Such references shal...

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Abstract

An electric submersible pumping system includes a motor comprising an inner hollow core rotor and an outer stator, a gearbox comprising a hollow core input shaft connected to the motor rotor, and a hollow core output shaft, and a pump driven by the gearbox output shaft, the pump having an intake, and wherein the pump output is directed through the hollow core output shaft and into the hollow core motor rotor. The motor section is disposed above the gearbox and pump.

Description

CROSS REFERENCE TO RELATED APPLICATIONS[0001]This application claims the priority benefit of U.S. Provisional Application No. 60 / 991,497 filed on Nov. 30, 2007 entitled “Bottom Hole Hollow Core Electric Submersible Pumping System”, the contents of which are incorporated herein by reference.FIELD OF THE INVENTION[0002]The present invention relates to the bottom hole components of an electric submersible pumping (ESP) system, and in particular, an ESP system having a hollow core motor disposed above the pump.BACKGROUND[0003]Many systems are known for producing fluids by artificial lift from oil and gas wells, including many forms of downhole pumps which are rotated by a surface motor and a rod string. Pumps driven by downhole electric motors are known as electric submersible pumps. The pumps themselves may be centrifugal pumps or positive displacement pump, such as a progressive cavity pump.[0004]In a conventional electric submersible pump system, shown in prior art FIG. 1, a motor is...

Claims

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Application Information

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IPC IPC(8): F04B35/04
CPCF04B47/06F04D13/10F04C13/008F04C2/1071
Inventor RING, CURTGEORGE, GRANTSTEELE, GEOFFMCCLEER, PAT
Owner STELLARTON TECH
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