WO2008143983A4 - Submersible pumping systems and methods - Google Patents

Submersible pumping systems and methods Download PDF

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Publication number
WO2008143983A4
WO2008143983A4 PCT/US2008/006301 US2008006301W WO2008143983A4 WO 2008143983 A4 WO2008143983 A4 WO 2008143983A4 US 2008006301 W US2008006301 W US 2008006301W WO 2008143983 A4 WO2008143983 A4 WO 2008143983A4
Authority
WO
WIPO (PCT)
Prior art keywords
approximately
coupled
motor
subsurface
degrees
Prior art date
Application number
PCT/US2008/006301
Other languages
French (fr)
Other versions
WO2008143983A2 (en
WO2008143983A3 (en
Inventor
Steven Regalado
Joseph L Leonard
Original Assignee
Geotech Environmental Equipmen
Steven Regalado
Joseph L Leonard
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Geotech Environmental Equipmen, Steven Regalado, Joseph L Leonard filed Critical Geotech Environmental Equipmen
Publication of WO2008143983A2 publication Critical patent/WO2008143983A2/en
Publication of WO2008143983A3 publication Critical patent/WO2008143983A3/en
Publication of WO2008143983A4 publication Critical patent/WO2008143983A4/en

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D13/00—Pumping installations or systems
    • F04D13/02—Units comprising pumps and their driving means
    • F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
    • F04D13/08—Units comprising pumps and their driving means the pump being electrically driven for submerged use
    • F04D13/10—Units comprising pumps and their driving means the pump being electrically driven for submerged use adapted for use in mining bore holes

Abstract

Submersible pumping systems, devices and methods for extracting liquids in deep well applications are disclosed. In the various embodiments, a submersible pumping system includes a power supply and a power converter coupled to the power supply. A subsurface unit may be coupled to the power converter and positioned in the well. The subsurface unit may include a subsurface controller, a motor and a pump portion operably coupled to the subsurface controller. The pump portion may further include a front shroud having an inlet, and a back shroud sealably coupled to the front shroud to define a volume. An orifice fluidly communicates with the volume and an annular fluid discharge space disposed about the subsurface unit. An impeller operably coupled to the motor and positioned within the volume may transport a liquid from the inlet to the annular fluid discharge space.

Claims

AMENDED CLAIMS received by the International Bureau on 26 January 2009 (26.01.2009); original claims 12-38 cancelled; remaining claims unchanged.
1. A submersible pumping system for a well, comprising: a power supply; a power converter coupled to the power supply; and a subsurface unit coupled to the power converter and configured to be positioned in the well remote from the power supply and the power converter, wherein the subsurface unit includes a subsurface controller, and a motor and a pump portion operably coupled to the subsurface controller, the pump portion further comprising: a front shroud having an inlet; a back shroud sealably coupled to the front shroud to define a volume there between; an orifice that fluidly communicates with the volume and an annular fluid discharge space at least partially disposed about the subsurface unit; and an impeller operably coupled to the motor and positioned within the volume to transport a liquid from the inlet to the annular fluid discharge space.
2. The system of claim 1, wherein the front shroud includes an axially disposed conical inner portion having a taper angle that ranges between approximately 45 degrees and approximately 60 degrees.
3. The system of claim 1, wherein the front shroud comprises a strainer fluidly coupled to the inlet that is configured to restrict the entry of solid material into the volume.
4. The system of claim 1, wherein the orifice comprises a constant diameter portion and a tapered portion coupled to the constant diameter portion, the tapered portion having an included angle that ranges between approximately five degrees, and approximately 50 degrees.
5. The system of claim 4, wherein the constant diameter portion comprises a diameter that ranges between approximately 0.030 inches, and approximately 0.120 inches.
6. The system of claim 1, wherein the impeller comprises a planar and circular disk that supports a plurality of outwardly extending vanes, and a centrally disposed impeller hub configured to be coupled to the motor.
7. The system of claim 6, wherein the disk comprises a plurality of apertures extending through the disk and positioned between the outwardly extending vanes.
8. The system of claim 6, wherein the outwardly extending vanes are spaced apart from the front shroud by a clearance distance that ranges between approximately 0.005 inch and approximately 0.040 inch.
9. The system of claim 6, wherein the outwardly extending vanes are inclined at an angle that ranges between approximately 45 degrees and approximately 60 degrees.
10. The system of claim 6, wherein the impeller hub is configured to fixedly retain a shaft extending from the motor using an interference fit.
11. The system of claim 1, wherein the motor comprises a polyphase, brushless and sensor less DC motor.
PCT/US2008/006301 2007-05-16 2008-05-16 Submersible pumping systems and methods WO2008143983A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US11/749,600 2007-05-16
US11/749,600 US20080286134A1 (en) 2007-05-16 2007-05-16 Submersible pumping systems and methods for deep well applications

Publications (3)

Publication Number Publication Date
WO2008143983A2 WO2008143983A2 (en) 2008-11-27
WO2008143983A3 WO2008143983A3 (en) 2009-01-22
WO2008143983A4 true WO2008143983A4 (en) 2009-03-12

Family

ID=40027673

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2008/006301 WO2008143983A2 (en) 2007-05-16 2008-05-16 Submersible pumping systems and methods

Country Status (2)

Country Link
US (2) US20080286134A1 (en)
WO (1) WO2008143983A2 (en)

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Also Published As

Publication number Publication date
WO2008143983A2 (en) 2008-11-27
US20080286134A1 (en) 2008-11-20
WO2008143983A3 (en) 2009-01-22
US20100270028A1 (en) 2010-10-28

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