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WO1993007391A1 - Pompe - Google Patents

Pompe Download PDF

Info

Publication number
WO1993007391A1
WO1993007391A1 PCT/GB1992/001811 GB9201811W WO9307391A1 WO 1993007391 A1 WO1993007391 A1 WO 1993007391A1 GB 9201811 W GB9201811 W GB 9201811W WO 9307391 A1 WO9307391 A1 WO 9307391A1
Authority
WO
WIPO (PCT)
Prior art keywords
rotor
housing
pump
fluid
driving fluid
Prior art date
Application number
PCT/GB1992/001811
Other languages
English (en)
Inventor
Mir Mahmood Sarshar
Wai Lam Loh
Original Assignee
B.H.R. Group Limited
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 B.H.R. Group Limited filed Critical B.H.R. Group Limited
Publication of WO1993007391A1 publication Critical patent/WO1993007391A1/fr

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
    • F04D17/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
    • F04D17/08—Centrifugal pumps
    • F04D17/18—Centrifugal pumps characterised by use of centrifugal force of liquids entrained in pumps
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
    • E21B43/12—Methods or apparatus for controlling the flow of the obtained fluid to or in wells
    • E21B43/121—Lifting well fluids
    • 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
    • F04D13/04—Units comprising pumps and their driving means the pump being fluid driven
    • F04D13/043—Units comprising pumps and their driving means the pump being fluid driven the pump wheel carrying the fluid driving means
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/52—Casings; Connections of working fluid for axial pumps
    • F04D29/54—Fluid-guiding means, e.g. diffusers
    • F04D29/548—Specially adapted for liquid pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D3/00—Axial-flow pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D31/00—Pumping liquids and elastic fluids at the same time

Definitions

  • a rotor rotates within a housing and the fluid material to be pumped passes along a passage between the rotor and housing.
  • blades extend radially from the rotor, and possibly the housing, into the passage and are arranged so that their reaction on the fluid material in the passage, as the rotor rotates, causes the fluid material to be driven axially through the passage.
  • high pressure driving fluid is discharged from a nozzle at high velocity in the form of a turbulent jet into a driven fluid thereby dropping the pressure in the jet to below that of the driven fluid so that the jet entrains the driven fluid in a mixing chamber of constant cross sectional area where mixing takes place.
  • the pressure of the liquid is then increased in a diffuser by slowing down the velocity of the mixture.
  • GB-A-0860073 suggests that the conventional rotor of an axial flow pump can be replaced by a hollow spinning impeller formed with nozzles on its periphery, the nozzles being inclined so that fluid expelled from the interior of the impeller into the passage creates a "pseudo blade" which reacts on the material in the passage as described above.
  • the jets of fluid discharged from the impeller at an angle to the axis of rotation causes the rotation of the impeller and creates the pseudo blades which react upon the material.
  • the fluids expelled through the nozzles combine with the material in the passage and transfer energy to them. In this arrangement there are no physical blades.
  • the present invention improves on this type of pump in one aspect by providing a mixing volume immediately downstream of the impeller, the volume being of constant section and bounded on the outside by the housing and the inside by a non-rotating body, preferably of the same section as the spinning impeller.
  • the pump may include a further body portion downstream of the mixing section, the further body portion including a central diffuser of decreasing cross-section.
  • the spinning impeller may be provided with physical blades upstream of the nozzles, which blades are arranged to swirl the material in the passage between the spinning impeller and the stator before it reaches the nozzles of the spinning impeller.
  • the passage for the pumped material may be of greater cross-section in the region of the physical blades than adjacent the nozzles and, where present, the mixing section.
  • Figure 1 shows a prior art impeller
  • Figure 2 shows an impeller very similar to that of Figure 1 arranged in a stator body
  • Figure 3 shows one embodiment of the invention with a cylindrical spinning impeller, a mixing section and a diffuser in a stator
  • Figure 4 shows a second embodiment of the invention with a bladed spinning impeller as well as the optional addition of the mixing section of Figure 3,
  • Figure 5 shows a diagrammatic arrangement of the pump of Figures 3 and 4 which can have many applications
  • Figure 6 illustrates a pump embodying the invention arranged for downhole pumping
  • Figure 7 illustrates an embodiment of the invention arranged to assist a conventional pump pumping multiphase fluids in which the gas phase is too large for the conventional pump on its own.
  • the spinning impellers shown in Figures 1 and 2 have a downstream end section 11 of approximately the shape of an oil drop and are mounted on an upstream hollow tube 12 which itself is supported for rotation in a bearing, not shown.
  • a primary fluid 13 is supplied through the hollow tube 12 into the downstream section 11 from which it escapes through nozzles 14 which are directed generally in the downstream direction and each one is inclined to that direction at the same angle around the impeller so as to form jets which cause the impeller to rotate and also force a secondary medium 15 in the passage 16 surrounding the impeller in the downstream direction.
  • the nozzles 14 in Figure 1 are hooded by hoods 17 whereas the one illustrated in Figure 2 appears to be a simple hole.
  • Figure 2 shows the housing 18 surrounding the impeller, the,housing being of constant cross-section in the region of the nozzles and downstream therefrom.
  • the oil-drop shape of the impeller with its decreasing cross-section of the impeller downstream of the nozzles means that the passage for material being pumped increases in cross- section in the downstream direction.
  • the impeller 21 according to the illustrated embodiments shown in Figures 3 and 4 is of cylindrical shape and the nozzles 24 are arranged at the downstream region of the impeller.
  • the impeller is mounted on an upstream hollow fluid supply tube 22 for rotation together as described above.
  • Downstream of the impeller is a non-rotating cylindrical axial stator body 25 of the same cross- section as the impeller 21.
  • the housing 28 is of constant cross-section downstream of the region of the nozzles 24 and of the cylindrical body 25 so that the passage 23 for the materials being pumped is a constant section annulus.
  • Downstream of the stationary body is a conical diffuser 26 axially aligned with the stator body so that the passage 27 for the materials at the region of the diffuser 26 increases in cross-section within the uniform bore of the housing 28.
  • the housing 28 Upstream of the nozzles, the housing 28 is of greater cross-section 29 than the uniform bore and converges to the uniform bore immediately upstream of the nozzles.
  • blades 31 are mounted on the upstream portion of the spinning impeller, here at the start of the converging portion 32 of the housing, and are arranged to impart a swirl and an initial acceleration in the downstream direction to the media passing the impeller before the media reach the nozzles.
  • the mechanical blades 31 upstream of the nozzles can be used in conjunction with -or separately from the stationary cylindrical body 25 downstream of the rotating impeller and have been found to increase the efficiency of the pump.
  • the system can also include an additional driving force introduced by an auxiliary pump shown at 33 in Figure 4 to pressurise the driving fluid or by another rotary source such as the motor shown at 34 in Figure 3 which would drive the impeller at higher speeds than that which would be achieved by the effect of the nozzles alone.
  • the components 33 and 34 are optional features which can be applied alone or together to either embodiment.
  • the driving fluid is pressurised before entering the pump, the pressure of the mixture leaving the pump is increased.
  • the pressurising of the driving fluid avoids the possible need to use a multiphase pump downstream of the main pump.
  • the pumps so described are suitable for many applications. Whereas many conventional pumps have flows which do not intermingle, the pumps of the present invention intermingle the driving and suction media flows to a high degree, enabling a good mixing and homogenisation of gas-liquid phases and liquid-liquid phases of fluids of different densities and viscosities.
  • FIG 5 shows the arrangement of the pump of Figures 3 and 4 in diagrammatic form.
  • the pump of Figures 3 or 4 is indicated generally at 50 and receives primary (driving) fluid 13 and a secondary medium (suction fluid) 15.
  • the output of the pump is a mixture 51 of the two inputs 13 and 15, and in its simplest arrangment the pump 50 acts as an in-line mixer. No mixing chamber apart from the annular chamber 23 is required.
  • the pressures of the fluids 13, 15 are equal. If the primary fluid pressure PI is greater than the suction fluid pressure P2, the mixture 51 will be at pressure P3, intermediate between PI and P2; in this arrangement the pump 50 acts as an eductor, functioning like a jet pump with the additional advantage of being able to handle gas liquid mixtures as the driving fluid as well as the suction fluid.
  • the secondary medium 15 can be of any phase or a mixture of phases and the primary fluid will act as a carrier fluid for the secondary medium, the pump 50 acting as a flow augmentor. If the secondary medium is an additive of any phase, the pump 50 acts as an inducer of additives, drawing the secondary medium from a container or (as in the case of sand on a submerged beach) from its natural environment.
  • the secondary medium 15 could be a foaming agent, the pump 50 acting as a foam injector.
  • the secondary medium 15 could be a chemical to be added to the main product which is the primary medium 13, for example, to dose the primary medium with an additive.
  • the pump 50 can operate as a downhole pump.
  • a driving fluid 13 is in this case pumped from surface or at wellhead via a dedicated line 61 down the wellbore 62 where the main pump 50 will be located.
  • the well fluids 55 flow via its suction line 28 to form the suction fluid 15.
  • the mixture of the motive and the mixture fluid downstream of the main pump then flows upward through a conduit 56 in the well bore to wellhead.
  • the driving fluid 13 may also be mixed with free gas 57.
  • the free gas when mixed with the well fluid will help to reduce the hydrostatic head of the mixture downstream of the main pump 50 in the well bore in a similar manner as is achieved by conventional gas lift operations.
  • Conventional pumps, even multiphase pumps, can only tolerate a maximum proportion of gas phase in the fluid being pumped.
  • Such pumps can be used in a system having multiphase fluids with a proportion of gas phase greater than said maximum by providing a separator 59 upstream of the conventional pump and a pump 50 downstream of the conventional pump 60 as shown in Figure 7.
  • the separator 59 separates out sufficient gas to bring the proportion of gas phase in the fluid supplied to the conventional pump 60 below said maximum, the separated gas phase being fed through a bypass conduit 61 and combined with the fluid downstream of the conventional pump 60 by means of the pump 50.
  • the output of the pump 60 is the primary fluid and the separated gas phase the suction fluid of the pump 50.
  • the conventional pump 60 may be a multiphase or a single phase pump.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

Une pompe comprend un carter (28), à l'intérieur duquel se trouve un rotor creux (21), et des éléments (22) servant à alimenter en un fluide d'entraînement l'intérieur du rotor. Le rotor (21) est pourvu d'ajutages (24) produisant des jets de fluide d'entraînement à partir de l'intérieur du rotor et dirigés en partie de manière tangentielle dans la chambre située entre le carter et le rotor. Cela fait tourner le rotor alors que le fluide d'entraînement passe de l'intérieur du rotor vers la chambre située entre le carter et l'extérieur du rotor. Un stator (25) est placé en aval par rapport au rotor, de façon à former avec le carter une chambre annulaire (23) de section uniforme sur toute sa longueur, et dans laquelle s'écoule le fluide se trouvant entre le carter et l'extérieur du rotor. Cet écoulement du fluide peut entraîner un milieu secondaire (15) alimentant le passage entre l'extérieur du rotor et le carter, de sorte que les deux milieux sont mélangés et le milieu secondaire est pompé par l'action du fluide d'entraînement. Une force rotative additionnelle (33, 34) peut être appliquée au rotor si celle produite par le fluide d'entraînement lui-même est insuffisante. Une partie stator (26) de section convergente peut être prévue en aval de la chambre annulaire (23).
PCT/GB1992/001811 1991-10-02 1992-10-02 Pompe WO1993007391A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB919120933A GB9120933D0 (en) 1991-10-02 1991-10-02 Axial flow pump
GB9120933.8 1991-10-02

Publications (1)

Publication Number Publication Date
WO1993007391A1 true WO1993007391A1 (fr) 1993-04-15

Family

ID=10702314

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB1992/001811 WO1993007391A1 (fr) 1991-10-02 1992-10-02 Pompe

Country Status (2)

Country Link
GB (1) GB9120933D0 (fr)
WO (1) WO1993007391A1 (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2342670A (en) * 1998-09-28 2000-04-19 Camco Int High gas/liquid ratio submergible pumping system utilizing a jet pump
WO2003033865A1 (fr) * 2001-10-11 2003-04-24 Weatherford/Lamb, Inc. Unite combinee de demarrage de puits et de surpresseur d'extraction par ejection
WO2006032141A1 (fr) * 2004-09-20 2006-03-30 Trican Well Service Ltd. Separateur de gaz
US7114572B2 (en) 2004-01-15 2006-10-03 Schlumberger Technology Corporation System and method for offshore production with well control
US7178592B2 (en) 2002-07-10 2007-02-20 Weatherford/Lamb, Inc. Closed loop multiphase underbalanced drilling process
US7677308B2 (en) 2005-09-20 2010-03-16 Tempress Technologies Inc Gas separator
GB2499114A (en) * 2012-01-30 2013-08-07 Gen Electric Hollow rotor for a motor and an electrical generator
WO2024028626A1 (fr) * 2022-08-02 2024-02-08 Totalenergies Onetech Système de levage de fluide à placer dans un puits de production de fluide, installation et procédé de production de fluide associés

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB733544A (en) * 1952-11-10 1955-07-13 Henning Guenther Bartels Device for increasing pressure or speed of a fluid flowing in a pipeline
GB860073A (en) * 1957-06-12 1961-02-01 Rensselaer Polytech Inst Method of energy exchange and apparatus for carrying out the same
US3304006A (en) * 1965-08-13 1967-02-14 Nash Engineering Co System for handling fluids in both liquid and gaseous phases
DE1528702A1 (de) * 1966-07-21 1969-06-04 Freiherr Von Falkenhausen Dipl Schaufellose Kreiselpumpe
GB1448167A (en) * 1974-09-10 1976-09-02 Kobe Inc Turbine drive well pump

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB733544A (en) * 1952-11-10 1955-07-13 Henning Guenther Bartels Device for increasing pressure or speed of a fluid flowing in a pipeline
GB860073A (en) * 1957-06-12 1961-02-01 Rensselaer Polytech Inst Method of energy exchange and apparatus for carrying out the same
US3304006A (en) * 1965-08-13 1967-02-14 Nash Engineering Co System for handling fluids in both liquid and gaseous phases
DE1528702A1 (de) * 1966-07-21 1969-06-04 Freiherr Von Falkenhausen Dipl Schaufellose Kreiselpumpe
GB1448167A (en) * 1974-09-10 1976-09-02 Kobe Inc Turbine drive well pump

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2342670A (en) * 1998-09-28 2000-04-19 Camco Int High gas/liquid ratio submergible pumping system utilizing a jet pump
US6357530B1 (en) 1998-09-28 2002-03-19 Camco International, Inc. System and method of utilizing an electric submergible pumping system in the production of high gas to liquid ratio fluids
GB2342670B (en) * 1998-09-28 2003-03-26 Camco Int High gas/liquid ratio electric submergible pumping system utilizing a jet pump
WO2003033865A1 (fr) * 2001-10-11 2003-04-24 Weatherford/Lamb, Inc. Unite combinee de demarrage de puits et de surpresseur d'extraction par ejection
US7178592B2 (en) 2002-07-10 2007-02-20 Weatherford/Lamb, Inc. Closed loop multiphase underbalanced drilling process
US7114572B2 (en) 2004-01-15 2006-10-03 Schlumberger Technology Corporation System and method for offshore production with well control
WO2006032141A1 (fr) * 2004-09-20 2006-03-30 Trican Well Service Ltd. Separateur de gaz
EA009894B1 (ru) * 2004-09-20 2008-04-28 Трайкэн Уэлл Сервис Лтд. Газосепаратор
AU2005287828B2 (en) * 2004-09-20 2011-08-04 Tempress Technologies, Inc. Gas separator
EP1792050A4 (fr) * 2004-09-20 2012-09-12 Trican Well Services Ltd Separateur de gaz
US7677308B2 (en) 2005-09-20 2010-03-16 Tempress Technologies Inc Gas separator
GB2499114A (en) * 2012-01-30 2013-08-07 Gen Electric Hollow rotor for a motor and an electrical generator
GB2499114B (en) * 2012-01-30 2014-04-16 Gen Electric Hollow rotor motor and systems comprising the same
WO2024028626A1 (fr) * 2022-08-02 2024-02-08 Totalenergies Onetech Système de levage de fluide à placer dans un puits de production de fluide, installation et procédé de production de fluide associés

Also Published As

Publication number Publication date
GB9120933D0 (en) 1991-11-13

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