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Encapsulated bottom intake pumping system

a pumping system and bottom intake technology, applied in the direction of pumping, positive displacement liquid engine, machine/engine, etc., can solve the problem that the prior art bottom intake pumping system is prone to mechanical failur

Inactive Publication Date: 2006-11-02
WOOD GROUP ESP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

"The present invention is a bottom-intake pumping system that includes a pump assembly, a motor, and a driveshaft assembly for delivering power from the motor to the pump assembly. The system also includes a first thrust bearing and a second thrust bearing to support the driveshaft assembly on both sides of the pump assembly. Additionally, the system includes a shroud assembly and a discharge pipe. The shroud assembly has a lower shroud hanger, a shroud body, and an upper shroud hanger that is connectable to the discharge pipe. The technical effects of this invention include improved pump performance, reduced noise, and improved stability and reliability."

Problems solved by technology

Although widely used, prior art bottom intake pumping systems are prone to mechanical failure.

Method used

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  • Encapsulated bottom intake pumping system
  • Encapsulated bottom intake pumping system
  • Encapsulated bottom intake pumping system

Examples

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Embodiment Construction

[0011] In accordance with a preferred embodiment of the present invention, FIG. 1 shows a front perspective view of a downhole pumping system 100 attached to production tubing 102. The downhole pumping system 100 and production tubing 102 are disposed in a wellbore 104, which is drilled for the production of a fluid such as water or petroleum. As used herein, the term “petroleum” refers broadly to all mineral hydrocarbons, such as crude oil, gas and combinations of oil and gas. Although the pumping system 100 is primarily designed to pump petroleum products, it will be understood that the present invention can also be used to move other fluids, which may be generically referred to as “wellbore fluids” while in the ground or “produced fluids” on the surface.

[0012] The production tubing 102 connects the pumping system 100 to a wellhead 106 located on the surface. The wellhead 106 is in turn connected to surface facilities for transporting, refining or storing the produced fluids. It ...

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Abstract

Disclosed is a bottom-intake pumping system that includes a pump assembly and a motor that drives the pump assembly with a driveshaft assembly. The bottom-intake pumping system includes a first thrust bearing that supports the driveshaft assembly on a first side of the pump assembly and a second thrust bearing that supports the driveshaft assembly on a second side of the pump assembly. The bottom-intake pumping system also includes a shroud assembly and a discharge pipe. The shroud assembly has a lower shroud hanger configured for rigid attachment at a selected location on the pump assembly, a shroud body connectable to the lower shroud hanger and an upper shroud hanger connectable to the shroud body. The upper shroud hanger is configured for sliding engagement with a discharge pipe.

Description

FIELD OF THE INVENTION [0001] This invention relates generally to the field of downhole pumping systems, and more particularly to encapsulated bottom intake pumping systems. BACKGROUND [0002] Submersible pumping systems are often deployed into wells to recover petroleum fluids from subterranean reservoirs. Submersible pumping systems often include an electric motor coupled to a pump assembly. When driven by a motor, the pump assembly moves fluids from the reservoir to surface facilities through production tubing. In many installations, the discharge from the pump assembly is connected directly to the production tubing. In these installations, the motor is commonly placed below the pump assembly at the terminal end of the equipment string. [0003] In other applications, however, it is desirable to place the pump assembly below the electric motor. Prior art “bottom intake” pumping systems are often used in combination with a shroud and an intake tailpipe to draw fluids from a lower wel...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): F04B17/00
CPCF04B47/06
Inventor BERRY, MICHAELKETTER, CHRIS
Owner WOOD GROUP ESP