CA2772854A1 - Motor/pump with spiral wound stator tube - Google Patents
Motor/pump with spiral wound stator tube Download PDFInfo
- Publication number
- CA2772854A1 CA2772854A1 CA2772854A CA2772854A CA2772854A1 CA 2772854 A1 CA2772854 A1 CA 2772854A1 CA 2772854 A CA2772854 A CA 2772854A CA 2772854 A CA2772854 A CA 2772854A CA 2772854 A1 CA2772854 A1 CA 2772854A1
- Authority
- CA
- Canada
- Prior art keywords
- stator
- spiral wound
- sheet
- pump
- seam
- Prior art date
- Legal status (The legal status 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 status listed.)
- Abandoned
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2/00—Rotary-piston machines or pumps
- F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
- F04C2/10—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member
- F04C2/107—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member with helical teeth
- F04C2/1071—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member with helical teeth the inner and outer member having a different number of threads and one of the two being made of elastic materials, e.g. Moineau type
- F04C2/1073—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member with helical teeth the inner and outer member having a different number of threads and one of the two being made of elastic materials, e.g. Moineau type where one member is stationary while the other member rotates and orbits
- F04C2/1075—Construction of the stationary member
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
- F04C15/0003—Sealing arrangements in rotary-piston machines or pumps
- F04C15/0007—Radial sealings for working fluid
- F04C15/0011—Radial sealings for working fluid of rigid material
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2230/00—Manufacture
- F04C2230/20—Manufacture essentially without removing material
- F04C2230/23—Manufacture essentially without removing material by permanently joining parts together
- F04C2230/231—Manufacture essentially without removing material by permanently joining parts together by welding
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2240/00—Components
- F04C2240/20—Rotors
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Rotary Pumps (AREA)
Abstract
A pump/motor includes a stator (10) having an interior profile surface and a rotor having an exterior profile surface. The stator tube is formed from the sheet metal spiral round to generate an interior profile, with an adjacent edge of the spiral wound sheet being secured together. Substantially uniform thickness elastomeric layer (20) form down interior surface of the stator tube. A rotor (30) is rotatable within the stator tube and the elastomeric layer of an operation of pump/motor.
Description
MOTOR/PUMP WITH SPIRAL WOUND STATOR TUBE
CROSS-REFERENCE TO RELATED APPLICATION
This application claims the priority of U.S. Provisional Application No.
61/239,537 filed on September 4, 2009, the disclosure of which is incorporated herein by reference for all purposes.
FIELD OF THE INVENTION
The present invention relates to motors and pumps of the type which include a stator and a rotor which rotates within the stator to either pump fluid or to generate mechanical forces from fluid pumped through the motor, e.g., to rotate a downhole bit. More particularly, the present invention relates to a relatively low cost stator tube formed by welding a spiral sheet to form the stator tube, with an elastomeric layer having a substantially uniform thickness on the interior of the stator tube.
BACKGROUND OF THE INVENTION
Various types of downhole progressing cavity or Moineau-style pumps and motors have been devised for downhole use in hydrocarbon recovery operations. In one embodiment, the equipment acts as to pump downhole fluid to the surface, typically by rotating a sucker rod at the surface to rotate the downhole rotor. Also, the pump could be configured to run with an electric submersible motor, which is not driven from the surface using sucker rods. In other embodiments, the equipment serves as a motor to receive downhole fluids pumped from the surface, and uses hydraulic forces to rotate the rotor and thereby rotate a bit below the motor. Various embodiments of downhole motors and pumps are disclosed in U.S. Patents 4,386,654, 4,519,712, 4,591,322, 4,773,834, 4,592,427, and 4,991,292. A stator for a positive displacement pump is disclosed in U.S. Patent 5,145,342, and U.S. Patent 5,474,432 discloses a pump or motor construction.
A progressing cavity pump is disclosed in U.S. Patent 6,120,267. U.S.
Patents 6,716,008, 6,464,467, 6,398,522, 6,308,549, 6,220,837, and 6,126,032 disclose other embodiments of downhole motor/pumps. U.S. Patent 6,729,391 discloses a progressing cavity pump which is insertable in a tubing string. An internally profiled stator tube is disclosed in U.S. Patent 6,309,195, and a method of producing elastomeric stators is disclosed in U.S. Patent 6,158,988.
More recent patents to positive displacement pumps and motors include U.S. Patents 7,131,827, 7,192,260, 7,226,277, 7,285,885, 7,316,548, 7,329,106, 7,413,416, and 7,473,082. U.S. Patent 6,604,192 discloses a positive displacement motor with an optimized liner thickness. U.S. Patent 7,137,795 discloses a pump stator formed from interlocking segments. U.S. Publication 2005/0169779 discloses features of a progressing cavity pump, and U.S
Publication 2005/0106004 discloses a stator for a positive displacement pump with a hollow space in the shape of a double or multiple spiral. U.S.
Publication 2007/0053783 discloses a stator which has multiple spirals for accommodating a rotor.
CROSS-REFERENCE TO RELATED APPLICATION
This application claims the priority of U.S. Provisional Application No.
61/239,537 filed on September 4, 2009, the disclosure of which is incorporated herein by reference for all purposes.
FIELD OF THE INVENTION
The present invention relates to motors and pumps of the type which include a stator and a rotor which rotates within the stator to either pump fluid or to generate mechanical forces from fluid pumped through the motor, e.g., to rotate a downhole bit. More particularly, the present invention relates to a relatively low cost stator tube formed by welding a spiral sheet to form the stator tube, with an elastomeric layer having a substantially uniform thickness on the interior of the stator tube.
BACKGROUND OF THE INVENTION
Various types of downhole progressing cavity or Moineau-style pumps and motors have been devised for downhole use in hydrocarbon recovery operations. In one embodiment, the equipment acts as to pump downhole fluid to the surface, typically by rotating a sucker rod at the surface to rotate the downhole rotor. Also, the pump could be configured to run with an electric submersible motor, which is not driven from the surface using sucker rods. In other embodiments, the equipment serves as a motor to receive downhole fluids pumped from the surface, and uses hydraulic forces to rotate the rotor and thereby rotate a bit below the motor. Various embodiments of downhole motors and pumps are disclosed in U.S. Patents 4,386,654, 4,519,712, 4,591,322, 4,773,834, 4,592,427, and 4,991,292. A stator for a positive displacement pump is disclosed in U.S. Patent 5,145,342, and U.S. Patent 5,474,432 discloses a pump or motor construction.
A progressing cavity pump is disclosed in U.S. Patent 6,120,267. U.S.
Patents 6,716,008, 6,464,467, 6,398,522, 6,308,549, 6,220,837, and 6,126,032 disclose other embodiments of downhole motor/pumps. U.S. Patent 6,729,391 discloses a progressing cavity pump which is insertable in a tubing string. An internally profiled stator tube is disclosed in U.S. Patent 6,309,195, and a method of producing elastomeric stators is disclosed in U.S. Patent 6,158,988.
More recent patents to positive displacement pumps and motors include U.S. Patents 7,131,827, 7,192,260, 7,226,277, 7,285,885, 7,316,548, 7,329,106, 7,413,416, and 7,473,082. U.S. Patent 6,604,192 discloses a positive displacement motor with an optimized liner thickness. U.S. Patent 7,137,795 discloses a pump stator formed from interlocking segments. U.S. Publication 2005/0169779 discloses features of a progressing cavity pump, and U.S
Publication 2005/0106004 discloses a stator for a positive displacement pump with a hollow space in the shape of a double or multiple spiral. U.S.
Publication 2007/0053783 discloses a stator which has multiple spirals for accommodating a rotor.
-2-The disadvantages of the prior art are overcome by the present invention, and an improved progressing cavity pump/motor and in particular a stator for a progressing cavity pump/motor is hereinafter disclosed.
-3-SUMMARY OF THE INVENTION
A progressing cavity pump/motor has a stator with substantially the same shape as the interior wall of the stator, so that an even rubber thickness on the stator may cooperate with the rotor profile to generate a pumping action or generate mechanical torque from fluid transmitted to the motor. The stator is formed from one or more strips of metal which are rolled and formed into the desired shape, and welded along the strip seam to produce the desired configuration.
These and further features and advantages of the present invention will become apparent from the following detailed description, wherein reference is made to the figures in the accompanying drawings.
A progressing cavity pump/motor has a stator with substantially the same shape as the interior wall of the stator, so that an even rubber thickness on the stator may cooperate with the rotor profile to generate a pumping action or generate mechanical torque from fluid transmitted to the motor. The stator is formed from one or more strips of metal which are rolled and formed into the desired shape, and welded along the strip seam to produce the desired configuration.
These and further features and advantages of the present invention will become apparent from the following detailed description, wherein reference is made to the figures in the accompanying drawings.
-4-BRIEF DESCRIPTION OF THE DRAWINGS
Figure 1 illustrates a portion of a suitable stator tube according to the present invention.
Figure 2 is a detailed view of a portion of the stator tube shown in Figure 1.
Figure 3 illustrates a side view of a portion of the stator and rotor within the stator.
Figure 4 illustrates a side view of another embodiment of a stator tube with a spiraling strip around the seam.
Figure 1 illustrates a portion of a suitable stator tube according to the present invention.
Figure 2 is a detailed view of a portion of the stator tube shown in Figure 1.
Figure 3 illustrates a side view of a portion of the stator and rotor within the stator.
Figure 4 illustrates a side view of another embodiment of a stator tube with a spiraling strip around the seam.
-5-DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS
Figure 1 illustrates a spiral shaped stator tube 10 which has an interior profile intended to generally match the interior profile of the elastomeric layer subsequently molded into the stator. The spiral shaped stator tube 10 as shown in Figure 1 thus provides a significant advantage of enabling a substantially even thickness of rubber around the profile of the stator, thereby eliminating problems associated with a thick rubber section retaining heat within the stator and lowering the pressure capability of the pump/motor. While other pump/motor stators have this general configuration, the present invention substantially reduces the costs of manufacturing the stator.
By utilizing a stator tube that has the same shape but is slightly larger than the interior profile of the rubber within the stator, the stator may be manufactured with an even rubber thickness around its inner profile. At the stator minor diameter, the rubber is thus thinner than for a conventional cylindrical stator with a varying rubber thickness, thereby resulting in the advantages of improved heat transfer capability and high pressure capability.
Stators with substantially even rubber thicknesses have been formed by various techniques, including casting, electrode discharge machining, and rotary swaging. Each of these techniques forms a suitable stator tube, but the cost of stator manufacturing is a significant disadvantage to the acceptance of such pump/motors.
As shown in Figures 1 and 2, the stator may be manufactured from metal strips 12 which are easily rolled and formed into the desired shape, then welded
Figure 1 illustrates a spiral shaped stator tube 10 which has an interior profile intended to generally match the interior profile of the elastomeric layer subsequently molded into the stator. The spiral shaped stator tube 10 as shown in Figure 1 thus provides a significant advantage of enabling a substantially even thickness of rubber around the profile of the stator, thereby eliminating problems associated with a thick rubber section retaining heat within the stator and lowering the pressure capability of the pump/motor. While other pump/motor stators have this general configuration, the present invention substantially reduces the costs of manufacturing the stator.
By utilizing a stator tube that has the same shape but is slightly larger than the interior profile of the rubber within the stator, the stator may be manufactured with an even rubber thickness around its inner profile. At the stator minor diameter, the rubber is thus thinner than for a conventional cylindrical stator with a varying rubber thickness, thereby resulting in the advantages of improved heat transfer capability and high pressure capability.
Stators with substantially even rubber thicknesses have been formed by various techniques, including casting, electrode discharge machining, and rotary swaging. Each of these techniques forms a suitable stator tube, but the cost of stator manufacturing is a significant disadvantage to the acceptance of such pump/motors.
As shown in Figures 1 and 2, the stator may be manufactured from metal strips 12 which are easily rolled and formed into the desired shape, then welded
-6-at 14 along the seam of the strips. While each strip may have a desired configuration to achieve the end results, it is preferable that the seam and thus the weld 14 are made at the radially outward portion of each stator lobe profile, as shown in Figure 1, so that the seam is easily accessible to a welding operation. The seam and thus the weld alternatively could be provided in the "valley" or the radially inward portion of each stator profile. The axial spacing between a full revolution of the stator spiral thus coincides with the axial spacing between a full spiral of the weld. Two spiraling strips welded together at this seam thus forms the completed stator housing. The seam may alternatively be made between the "hill" and the "valley" of the spiral wound stator tube.
Figure 3 illustrates a portion of a stator 10 with a seam 14 as discussed above, and a rotor 30 positioned within the stator.
The metal strips 12 which form the body of the stator tube may thus have a substantially uniform thickness, which may be between 0.040 inches to 0.50 inches. In other embodiments, another thin strip may be welded to the exterior, or possibly the interior, of the formed stator tube on each side of the seam, so that both the weld 14 and the added strip with a weld on each side of seam 14 thus provides additional mechanical strength and fluid pressure integrity. The ends of each stator tube may include an adapter so that the spiral tube can be interconnected by the adapter to tools and tubular with conventional threads.
Referring briefly to Figure 3, the cross-section of the stator 10 is shown, along with a uniform rubber thickness layer 20 on the interior of the stator tube 10. Figure 3 also depicts a portion of a suitable rotor 30 positioned within the
Figure 3 illustrates a portion of a stator 10 with a seam 14 as discussed above, and a rotor 30 positioned within the stator.
The metal strips 12 which form the body of the stator tube may thus have a substantially uniform thickness, which may be between 0.040 inches to 0.50 inches. In other embodiments, another thin strip may be welded to the exterior, or possibly the interior, of the formed stator tube on each side of the seam, so that both the weld 14 and the added strip with a weld on each side of seam 14 thus provides additional mechanical strength and fluid pressure integrity. The ends of each stator tube may include an adapter so that the spiral tube can be interconnected by the adapter to tools and tubular with conventional threads.
Referring briefly to Figure 3, the cross-section of the stator 10 is shown, along with a uniform rubber thickness layer 20 on the interior of the stator tube 10. Figure 3 also depicts a portion of a suitable rotor 30 positioned within the
-7-stator, such that the rotor rotates within the stator to achieve the desired pumping action or to generate torque from power fluid to rotate a bit.
In one embodiment, an improved downhole motor/pump is provided, the equipment including a stator tube with a substantially uniform thickness metal sheet formed and spiral wound to generate an interior profile for the stator.
Adjacent edges of the spiral wound sheet may be secured together by welding.
A substantially uniform thickness elastomeric layer may be formed on the interior profile surface of the stator, and a rotor positioned within the stator and the elastomeric layer for cooperating with the elastomeric layer during operation of the pump/motor. In another embodiment, an improved stator is provided suitable for use with a pump/motor, with a stator tube having a substantially uniform thickness metal sheet formed and spiral wound to generate an interior profile, and adjacent edges of the spiral wound sheet secured together.
Figure 4 illustrates a portion of a stator 11, although in this case the rubber layer 20 is not shown. The seam between spiraling sheets is connected by a spiraling strap 36 which may be positioned over a portion of the external surface of adjacent strips and welded to each strip. As previously noted, the seam may not be provided in the "high portion" of the stator profile, and thus the strips may not enlarge the overall diameter of the stator tube.
Although specific embodiments of the invention have been described herein in some detail, this has been done solely for the purposes of explaining the various aspects of the invention, and is not intended to limit the scope of the invention as defined in the claims which follow. Those skilled in the art will
In one embodiment, an improved downhole motor/pump is provided, the equipment including a stator tube with a substantially uniform thickness metal sheet formed and spiral wound to generate an interior profile for the stator.
Adjacent edges of the spiral wound sheet may be secured together by welding.
A substantially uniform thickness elastomeric layer may be formed on the interior profile surface of the stator, and a rotor positioned within the stator and the elastomeric layer for cooperating with the elastomeric layer during operation of the pump/motor. In another embodiment, an improved stator is provided suitable for use with a pump/motor, with a stator tube having a substantially uniform thickness metal sheet formed and spiral wound to generate an interior profile, and adjacent edges of the spiral wound sheet secured together.
Figure 4 illustrates a portion of a stator 11, although in this case the rubber layer 20 is not shown. The seam between spiraling sheets is connected by a spiraling strap 36 which may be positioned over a portion of the external surface of adjacent strips and welded to each strip. As previously noted, the seam may not be provided in the "high portion" of the stator profile, and thus the strips may not enlarge the overall diameter of the stator tube.
Although specific embodiments of the invention have been described herein in some detail, this has been done solely for the purposes of explaining the various aspects of the invention, and is not intended to limit the scope of the invention as defined in the claims which follow. Those skilled in the art will
-8-
9 PCT/US2010/046957 understand that the embodiment shown and described is exemplary, and various other substitutions, alterations and modifications, including but not limited to those design alternatives specifically discussed herein, may be made in the practice of the invention without departing from its scope.
Claims (14)
1. A pump/motor including a stator having an interior profiled surface and a rotor having an exterior profiled surface, comprising:
the stator tube including a substantially uniform thickness metal sheet formed and spiral wound to generate an interior profile, adjacent edges of the spiral wound sheet being secured together at a sheet seam with a seam profile corresponding to the interior profile of the stator tube, such that an axial lead of the spiral wound stator tube is substantially an axial lead of the seam of the spiral wound sheet;
a substantially uniform thickness elastomeric layer formed on the interior profiled surface of the stator tube; and a rotor rotatable within the stator tube and within the elastomeric layer, the rotor cooperating with the elastomeric layer during operation of the pump/motor.
the stator tube including a substantially uniform thickness metal sheet formed and spiral wound to generate an interior profile, adjacent edges of the spiral wound sheet being secured together at a sheet seam with a seam profile corresponding to the interior profile of the stator tube, such that an axial lead of the spiral wound stator tube is substantially an axial lead of the seam of the spiral wound sheet;
a substantially uniform thickness elastomeric layer formed on the interior profiled surface of the stator tube; and a rotor rotatable within the stator tube and within the elastomeric layer, the rotor cooperating with the elastomeric layer during operation of the pump/motor.
2. A pump/motor as defined in Claim 1, wherein the adjacent edges of the spiral wound sheet are secured by a weld.
3. A pump/motor as defined in Claim 1, further comprising:
a thin metal strip covering the seam between the spiral wound sheet metal and secured to the sheet metal on each side of the seam.
a thin metal strip covering the seam between the spiral wound sheet metal and secured to the sheet metal on each side of the seam.
4. Cancelled
5. A pump/motor including a stator having an interior profiled surface and a rotor having an exterior profiled surface, comprising:
the stator tube including a metal sheet formed and spiral wound to generate an interior profile, adjacent edges of the spiral wound sheet being secured together at a sheet seam with a seam profile corresponding to the interior profile of the stator tube, such that an axial lead of the spiral wound stator tube is substantially an axial lead of the seam of the spiral wound sheet;
a substantially uniform thickness elastomeric layer formed on the interior profiled surface of the stator tube; and a rotor rotatable within the stator and within the elastomeric layer, the rotor cooperating with the elastomeric layer during operation of the pump/motor.
the stator tube including a metal sheet formed and spiral wound to generate an interior profile, adjacent edges of the spiral wound sheet being secured together at a sheet seam with a seam profile corresponding to the interior profile of the stator tube, such that an axial lead of the spiral wound stator tube is substantially an axial lead of the seam of the spiral wound sheet;
a substantially uniform thickness elastomeric layer formed on the interior profiled surface of the stator tube; and a rotor rotatable within the stator and within the elastomeric layer, the rotor cooperating with the elastomeric layer during operation of the pump/motor.
6. A pump/motor as defined in Claim 5, wherein the adjacent edges of the spiral wound sheet are secured by a weld.
7. A pump/motor as defined in Claim 5, further comprising:
a thin metal strip covering the seam between the spiral wound sheet metal and secured to the sheet metal on each side of the seam.
a thin metal strip covering the seam between the spiral wound sheet metal and secured to the sheet metal on each side of the seam.
8. Cancelled
9. A stator for a pump/motor, the stator having an interior profiled surface, comprising:
the stator tube including a metal sheet formed and spiral wound to generate an interior profile, adjacent edges of the spiral wound sheets being secured together at a sheet seam with a seam profile corresponding to the interior profile of the stator tube, such that an axial lead of the spiral wound stator tube is substantially an axial lead of the seam of the spiral wound sheet.
the stator tube including a metal sheet formed and spiral wound to generate an interior profile, adjacent edges of the spiral wound sheets being secured together at a sheet seam with a seam profile corresponding to the interior profile of the stator tube, such that an axial lead of the spiral wound stator tube is substantially an axial lead of the seam of the spiral wound sheet.
10. A stator as defined in Claim 9, further comprising:
a substantially uniform thickness elastomeric layer formed on the interior profiled surface of the stator.
a substantially uniform thickness elastomeric layer formed on the interior profiled surface of the stator.
11. A stator as defined in Claim 9, wherein the adjacent edges of the spiral wound sheet are secured by a weld.
12. Cancelled
13. A stator as defined in Claim 9, wherein the sheet metal has a substantially uniform thickness.
14. A stator as defined in Claim 9, wherein side edges of a first metal sheet are each adjacent a respective side edge of a,second metal sheet.
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US23953709P | 2009-09-04 | 2009-09-04 | |
US61/239,537 | 2009-09-04 | ||
US12/869,011 US20110058930A1 (en) | 2009-09-04 | 2010-08-26 | Motor/pump with spiral wound stator tube |
US12/869,011 | 2010-08-26 | ||
PCT/US2010/046957 WO2011028639A1 (en) | 2009-09-04 | 2010-08-27 | Motor/pump with spiral wound stator tube |
Publications (1)
Publication Number | Publication Date |
---|---|
CA2772854A1 true CA2772854A1 (en) | 2011-03-10 |
Family
ID=43647910
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA2772854A Abandoned CA2772854A1 (en) | 2009-09-04 | 2010-08-27 | Motor/pump with spiral wound stator tube |
Country Status (4)
Country | Link |
---|---|
US (1) | US20110058930A1 (en) |
AR (1) | AR078322A1 (en) |
CA (1) | CA2772854A1 (en) |
WO (1) | WO2011028639A1 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9091264B2 (en) | 2011-11-29 | 2015-07-28 | Baker Hughes Incorporated | Apparatus and methods utilizing progressive cavity motors and pumps with rotors and/or stators with hybrid liners |
GB201621618D0 (en) | 2016-12-19 | 2017-02-01 | Edwards Ltd | Pump sealing |
US11655815B2 (en) | 2019-12-13 | 2023-05-23 | Roper Pump Company, Llc | Semi-rigid stator |
Family Cites Families (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US470738A (en) * | 1892-03-15 | Strake-weld pipe | ||
US1718468A (en) * | 1926-05-22 | 1929-06-25 | William J Leary | Conduit |
DE2918602A1 (en) * | 1979-05-09 | 1980-11-20 | Josef Ing Grad Zeitvogel | Hollow worm for eccentric worm pump - is formed by winding metal strip on core and continuously welding helical join |
US4386654A (en) * | 1981-05-11 | 1983-06-07 | Becker John A | Hydraulically operated downhole oil well pump |
KR850004305A (en) * | 1983-12-28 | 1985-07-11 | 오노 쓰네오 | Rotary Displacement Eccentric Archimedes Principle Screw Pump |
US4592427A (en) * | 1984-06-19 | 1986-06-03 | Hughes Tool Company | Through tubing progressing cavity pump |
US4519712A (en) * | 1984-09-06 | 1985-05-28 | Barr Robert A | Positive displacement pump assembly |
DE3826033A1 (en) * | 1988-07-30 | 1990-02-01 | Gummi Jaeger Kg Gmbh & Cie | METHOD FOR PRODUCING ELASTOMER STATORS FOR Eccentric Screw Pumps |
DE4006339C2 (en) * | 1990-03-01 | 1994-08-04 | Gd Anker Gmbh & Co Kg | Stator for an eccentric screw pump |
GB9303507D0 (en) * | 1993-02-22 | 1993-04-07 | Mono Pumps Ltd | Progressive cavity pump or motors |
DE19812660A1 (en) * | 1998-03-23 | 1999-09-30 | Wella Ag | Two-component container |
US6120267A (en) * | 1998-04-01 | 2000-09-19 | Robbins & Myers, Inc. | Progressing cavity pump including a stator modified to improve material handling capability |
WO1999066208A1 (en) * | 1998-06-19 | 1999-12-23 | Photosynthesis (Jersey) Limited | Pump with a flexible impeler |
US6308549B1 (en) * | 1998-11-26 | 2001-10-30 | Denso Corporation | Apparatus and method for forming spirally wound stator core or rotary electric machine |
US6729391B2 (en) * | 2001-12-14 | 2004-05-04 | Kudu Industries Inc. | Insertable progressing cavity pump |
WO2003063724A2 (en) * | 2002-01-28 | 2003-08-07 | Lampert Christopher J | Endodontic instrument |
DE10245497C5 (en) * | 2002-09-27 | 2009-02-19 | Wilhelm Kächele GmbH Elastomertechnik | Progressive cavity pump with increased temperature range |
DE10338632B4 (en) * | 2003-08-22 | 2005-11-03 | Wilhelm Kächele GmbH | Eccentric screw pump with erosion-resistant rotor |
-
2010
- 2010-08-26 US US12/869,011 patent/US20110058930A1/en not_active Abandoned
- 2010-08-27 CA CA2772854A patent/CA2772854A1/en not_active Abandoned
- 2010-08-27 WO PCT/US2010/046957 patent/WO2011028639A1/en active Application Filing
- 2010-09-03 AR ARP100103240A patent/AR078322A1/en unknown
Also Published As
Publication number | Publication date |
---|---|
US20110058930A1 (en) | 2011-03-10 |
AR078322A1 (en) | 2011-11-02 |
WO2011028639A1 (en) | 2011-03-10 |
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Date | Code | Title | Description |
---|---|---|---|
FZDE | Discontinued |
Effective date: 20140827 |