EP0717818B1 - System zum pumpen von flüssigkeiten mit hilfe einer strahlpumpe - Google Patents

System zum pumpen von flüssigkeiten mit hilfe einer strahlpumpe Download PDF

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Publication number
EP0717818B1
EP0717818B1 EP94925562A EP94925562A EP0717818B1 EP 0717818 B1 EP0717818 B1 EP 0717818B1 EP 94925562 A EP94925562 A EP 94925562A EP 94925562 A EP94925562 A EP 94925562A EP 0717818 B1 EP0717818 B1 EP 0717818B1
Authority
EP
European Patent Office
Prior art keywords
jet pump
fluid
gas
outlet
pressure inlet
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.)
Expired - Lifetime
Application number
EP94925562A
Other languages
English (en)
French (fr)
Other versions
EP0717818A1 (de
Inventor
Mir Mahmood Sarshar
Emil Gyorgy Dr. Arato
Michael Thomas Ralph Butcher
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Caltec Ltd
Original Assignee
BHR Group Ltd
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 BHR Group Ltd filed Critical BHR Group Ltd
Publication of EP0717818A1 publication Critical patent/EP0717818A1/de
Application granted granted Critical
Publication of EP0717818B1 publication Critical patent/EP0717818B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • 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
    • E21B43/34—Arrangements for separating materials produced by the well
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/40—Mixing liquids with liquids; Emulsifying
    • B01F23/45—Mixing liquids with liquids; Emulsifying using flow mixing
    • B01F23/454—Mixing liquids with liquids; Emulsifying using flow mixing by injecting a mixture of liquid and gas
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/40—Mixing liquids with liquids; Emulsifying
    • B01F23/49—Mixing systems, i.e. flow charts or diagrams
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F25/30—Injector mixers
    • B01F25/31—Injector mixers in conduits or tubes through which the main component flows
    • B01F25/312—Injector mixers in conduits or tubes through which the main component flows with Venturi elements; Details thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F25/30—Injector mixers
    • B01F25/31—Injector mixers in conduits or tubes through which the main component flows
    • B01F25/312—Injector mixers in conduits or tubes through which the main component flows with Venturi elements; Details thereof
    • B01F25/3121—Injector mixers in conduits or tubes through which the main component flows with Venturi elements; Details thereof with additional mixing means other than injector mixers, e.g. screens, baffles or rotating elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F25/30—Injector mixers
    • B01F25/31—Injector mixers in conduits or tubes through which the main component flows
    • B01F25/312—Injector mixers in conduits or tubes through which the main component flows with Venturi elements; Details thereof
    • B01F25/3124—Injector mixers in conduits or tubes through which the main component flows with Venturi elements; Details thereof characterised by the place of introduction of the main flow
    • B01F25/31242—Injector mixers in conduits or tubes through which the main component flows with Venturi elements; Details thereof characterised by the place of introduction of the main flow the main flow being injected in the central area of the venturi, creating an aspiration in the circumferential part of the conduit
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F25/30—Injector mixers
    • B01F25/31—Injector mixers in conduits or tubes through which the main component flows
    • B01F25/313—Injector mixers in conduits or tubes through which the main component flows wherein additional components are introduced in the centre of the conduit
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F25/30—Injector mixers
    • B01F25/31—Injector mixers in conduits or tubes through which the main component flows
    • B01F25/313—Injector mixers in conduits or tubes through which the main component flows wherein additional components are introduced in the centre of the conduit
    • B01F25/3132—Injector mixers in conduits or tubes through which the main component flows wherein additional components are introduced in the centre of the conduit by using two or more injector devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F25/40—Static mixers
    • B01F25/42—Static mixers in which the mixing is affected by moving the components jointly in changing directions, e.g. in tubes provided with baffles or obstructions
    • B01F25/43—Mixing tubes, e.g. wherein the material is moved in a radial or partly reversed direction
    • B01F25/432—Mixing tubes, e.g. wherein the material is moved in a radial or partly reversed direction with means for dividing the material flow into separate sub-flows and for repositioning and recombining these sub-flows; Cross-mixing, e.g. conducting the outer layer of the material nearer to the axis of the tube or vice-versa
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F33/00—Other mixers; Mixing plants; Combinations of mixers
    • B01F33/80—Mixing plants; Combinations of mixers
    • B01F33/82—Combinations of dissimilar mixers
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04F—PUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BY USING INERTIA OF FLUID TO BE PUMPED; SIPHONS
    • F04F5/00—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow
    • F04F5/02—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow the inducing fluid being liquid
    • F04F5/10—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow the inducing fluid being liquid displacing liquids, e.g. containing solids, or liquids and elastic fluids
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/20—Mixing gases with liquids
    • B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/40—Mixing liquids with liquids; Emulsifying

Definitions

  • Jet pumps operate by introducing a high pressure or primary fluid through a nozzle and allowing the low pressure or secondary fluid to be entrained into the flow stream. Due to the momentum exchange between the two fluids the resulting pressure of the combined stream will be increased to well above the pressure of the secondary fluid.
  • An application of mingling liquids is in fuel extraction. Gas or liquid or a mixture of the two phases is extracted from a fuel field. Many fields have a significant variation in production characteristics because of reservoir fragmentation and presence of different production zones. This often results in wells having different flowing wellhead pressures.
  • Jet pumps can be used for such mingling and work satisfactorily when the primary and secondary fluids are both liquids, or both gases.
  • jet pumps can also be designed to operate satisfactorily when the primary fluid is pure liquid and the secondary fluid consists of a liquid/gas mixture.
  • jet pump operation cannot be achieved when there is a wide variation in the phase proportions in the primary fluid.
  • the present invention is aimed at overcoming this problem by providing a co-mingling device according to claim 1 in which the jet pump is provided with a phase separator in the primary line, and utilising the liquid phase obtained from the separator as the primary fluid of the jet pump.
  • a bypass arrangement is provided for the separated gas phase to be mixed back into the fluids from the outlet of the jet pump.
  • Sources of high and low pressure fluids for the jet pump are obtained in this example from underground oil wells, a first source of fluid 11 under low pressure and a second source of fluid 12 under high pressure. Both fluids are mixtures of gas and liquid. The fluid from the high pressure oil well is used to pump fluid from the low pressure well.
  • the fluid mixture under low pressure is supplied to the low pressure inlet 14G of a conventional jet pump 14.
  • the high pressure fluid passes first to an in-line separator 15, in which the lighter phase tends to return to the line of entry and the heavier fluids are deflected from that line. This is usually achieved by imparting a swirl to the incoming fluid, the centrifugal force acting to separate the different phases.
  • the gas rich fluid tends to collect along the axis of the swirl, in line with the incoming fluid and the heavier phase is collected from an off-axis outlet.
  • the liquid phase (or liquid rich fluid) 15L separated from the high pressure fluid is supplied as primary fluid to the high pressure inlet 14L of the jet pump 14.
  • the gas-rich phase 15G separated from the high pressure fluid passes through a bypass conduit 24, and the conduit may be provided with a device for controlling the flow of the gas in the bypass conduit; the device may be an orifice plate, a nozzle (as illustrated at 26) at the end of the bypass conduit 24 or a controllable valve, which is useful when inlet pressures may vary during operation.
  • the jet pump 14 Since the primary fluid reaching the high pressure inlet 14L of the jet pump is substantially all liquid phase, the jet pump 14 operates satisfactorily to draw low pressure fluid from the first source through the pump and the mixture of liquids passes from the jet pump outlet 27, into a mixing device 28 where it is mixed with the gas stream from the separator 15.
  • the mixing device 28 is housed in an extension of the outlet pipe 27 of the jet pump; the diameter of the extension increases in the region of the entry of the gas bypass conduit outlet.
  • the role of the mixing device is to allow efficient entry of the bypass gas into the fluid leaving the jet pump. Since the pressure of the two fluids may be comparable at this point the mixing device must reduce the effect which the high pressure bypass gas may have in restricting the flow out of the jet pump.
  • bypass gas is problably at a higher pressure than the fluids in the outlet of the jet pump and so it is preferable for the outlet of the bypass conduit to form what can be seen as another jet pump in the outlet conduit from the main jet pump, thus assisting the flow of fluids from the main jet pump, recovering momentum lost from the high pressure oil stream at the phase separator.
  • bypass gases should be introduced in a streamline manner, such as by directing the gases axially along the outlet conduit, to prevent any disruption of the flow from the outlet of the main jet pump.
  • the effect of the outlet fluids from the main jet pump on the flow of gas in the bypass conduit controls the operation of the phase separator; its back pressure discourages any carry-over of liquid slugs through the bypass conduit; it is thus a passive controller.
  • the gas from the separator 15 need not be mixed back with the output fluids from the jet pump.
  • the gas may for example be fed to a flare or a fuel system.
  • FIG 3 there are two jet pumps 31, 32 in parallel and two phase separators 41, 42, one in the supply from each well.
  • the first jet pump 31 receives liquid at each of its inputs, the liquid phase output 41L from the high pressure well separator 41 as its primary fluid and the liquid phase output 42L from the low pressure well separator 42 as its secondary input, co-mingling them to produce a liquid supply 43L to the single mixing device 43.
  • the second pump 32 receives gas-rich fluid at each of its inputs, the gas phase output 41G from the high pressure well separator 41 as its primary fluid and the gas phase output 42G from the low pressure well separator 42 as its secondary fluid, comingling the gases to produce a gas supply 43G to a single mixing device 43. Jet pumps receiving the same phase for primary and secondary fluids have improved performance, as was pointed out in the introduction to the specification.
  • the jet pump 14 in Figures 1 and 2 has a liquid enriched supply of driving fluid, but the supply from the low pressure well is unseparated and so may contain unsatisfactory amount of gas.
  • both jet pumps 31, 32 have phase separated supplies and so do not have to deal with such a wide range of phase proportions; they can therefore be much more closely designed and so should work more efficiently.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Geochemistry & Mineralogy (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Dispersion Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Jet Pumps And Other Pumps (AREA)
  • Cyclones (AREA)

Claims (5)

  1. Vorrichtung für das Zusammenmischen, die aufweist: eine Strahlpumpe (14, 31) mit einem Hochdruckeintritt (14L, 41L), einem Niederdruckeintritt (14G, 42L) und einem Hauptaustritt (27, 43L), eine Phasentrenneinrichtung (15, 41) mit einem Austritt für das flüssigkeitsreiche fließende Medium (15L, 41L), der mit dem Hochdruckeintritt verbunden ist, und einem Austritt für das gasreiche fließende Medium (15G, 41G), der mit dem Hauptaustritt verbunden ist, wobei die fließenden Medien aus dem Austritt für das gasreiche fließende Medium (15G, 41G) mit den fließenden Medien von der Strahlpumpe (14, 31) erst gemischt werden, nachdem sie zum Hauptaustritt (27, 43L) gelangt sind.
  2. Vorrichtung nach Anspruch 1, bei der der Austritt für das gasreiche fließende Medium (15G) mit dem Hauptaustritt mittels einer Düse (26) verbunden ist, die längs der Achse des Hauptaustrittes ausgerichtet ist.
  3. Vorrichtung nach Anspruch 1 oder Anspruch 2, wobei die Strahlpumpe eine erste Strahlpumpe (31) mit einem Hochdruckeintritt, einem Niederdruckeintritt und einem Hauptaustritt ist, und wobei die Phasentrenneinrichtung eine erste Phasentrenneinrichtung (41) mit einem Austritt für das flüssigkeitsreiche fließende Medium ist, der mit dem Hochdruckeintritt der erste Strahlpumpe verbunden ist, und wobei die Vorrichtung aufweist: eine zweite Strahlpumpe (32) mit einem Hochdruckeintritt, einem Niederdruckeintritt und einem Hauptaustritt, und eine zweite Phasentrenneinrichtung (42) mit einem Austritt für das flüssigkeitsreiche fließende Medium, der mit dem Niederdruckeintritt der ersten Strahlpumpe verbunden ist, wobei die erste Phasentrenneinrichtung einen Austritt für das gasreiche fließende Medium aufweist, der mit dem Hochdruckeintritt der zweiten Strahlpumpe verbunden ist, und wobei die zweite Phasentrenneinrichtung einen Austritt für das gasreiche fließende Medium aufweist, der mit dem Niederdruckeintritt der zweiten Strahlpumpe verbunden ist.
  4. Vorrichtung nach Anspruch 3, die eine Einrichtung (43) aufweist, um die Austritte der zwei Strahlpumpen (31, 32) zu mischen.
  5. Vorrichtung nach einem der Ansprüche 1 bis 4, worin die oder jede Phasentrenneinrichtung eine mitlaufende Trenneinrichtung ist, wobei der Austritt für das gasreiche fließende Medium (15G, 41G) mit dem Eintritt der Phasentrenneinrichtung ausgerichtet ist.
EP94925562A 1993-09-06 1994-09-06 System zum pumpen von flüssigkeiten mit hilfe einer strahlpumpe Expired - Lifetime EP0717818B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB939318419A GB9318419D0 (en) 1993-09-06 1993-09-06 Pumping liquids using a jet pump
GB9318419 1993-09-06
PCT/GB1994/001937 WO1995007414A1 (en) 1993-09-06 1994-09-06 System for pumping liquids using a jet pump

Publications (2)

Publication Number Publication Date
EP0717818A1 EP0717818A1 (de) 1996-06-26
EP0717818B1 true EP0717818B1 (de) 1998-05-27

Family

ID=10741559

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94925562A Expired - Lifetime EP0717818B1 (de) 1993-09-06 1994-09-06 System zum pumpen von flüssigkeiten mit hilfe einer strahlpumpe

Country Status (11)

Country Link
EP (1) EP0717818B1 (de)
JP (1) JPH09502779A (de)
AT (1) ATE166703T1 (de)
AU (1) AU687862B2 (de)
BR (1) BR9407387A (de)
DE (1) DE69410619T2 (de)
DK (1) DK0717818T3 (de)
ES (1) ES2117291T3 (de)
GB (2) GB9318419D0 (de)
NO (1) NO307758B1 (de)
WO (1) WO1995007414A1 (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6026904A (en) * 1998-07-06 2000-02-22 Atlantic Richfield Company Method and apparatus for commingling and producing fluids from multiple production reservoirs
GB2499473A (en) * 2012-02-20 2013-08-21 Caltec Ltd Gas lift system with surface jet pump
US8747679B2 (en) 2008-01-22 2014-06-10 Caltec Limited Separation system and method for separating a fluid mixture with this separating system
US10167706B2 (en) 2015-03-13 2019-01-01 Caltec Production Solutions Limited Oil/gas production apparatus

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2759113B1 (fr) * 1997-01-31 1999-03-19 Elf Aquitaine Installation de pompage d'un effluent biphasique liquide/gaz
US6336503B1 (en) 2000-03-03 2002-01-08 Pancanadian Petroleum Limited Downhole separation of produced water in hydrocarbon wells, and simultaneous downhole injection of separated water and surface water
US6336504B1 (en) 2000-03-03 2002-01-08 Pancanadian Petroleum Limited Downhole separation and injection of produced water in naturally flowing or gas-lifted hydrocarbon wells
US6539878B1 (en) 2000-08-29 2003-04-01 National Steel Car Limited Vehicle carrying rail road car with bridge plate assembly
US7255047B1 (en) 2000-08-29 2007-08-14 National Steel Car Limited Vehicle carrying rail road car and bridge plate therefor
US6968788B1 (en) 2000-08-29 2005-11-29 National Steel Car Limited Vehicle carrying rail road car with deck access fittings
US6537349B2 (en) * 2001-03-27 2003-03-25 Conoco, Inc. Passive low pressure flash gas compression system
GB2399864A (en) * 2003-03-22 2004-09-29 Ellastar Ltd A system and process for pumping multiphase fluids
GB2418213B (en) * 2004-09-21 2009-09-09 Caltec Ltd Well start-up system and process
BRPI0703726B1 (pt) * 2007-10-10 2018-06-12 Petróleo Brasileiro S.A. - Petrobras Módulo de bombeio e sistema para bombeio submarino de produção de hidrocarbonetos com alta fração de gás associado
GB2461874B (en) 2008-07-14 2012-11-21 Caltec Ltd Separation system and method
KR101459888B1 (ko) * 2013-03-28 2014-11-07 현대중공업 주식회사 해양플랜트용 해양자원 이송장치
GB2526820B (en) * 2014-06-03 2020-07-29 Caltec Production Solutions Ltd System and process for pumping fluids
CN110173471A (zh) * 2019-07-02 2019-08-27 北京合利能科技有限公司 一种供热用平衡泵

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GB2101216B (en) * 1981-06-26 1984-10-24 Plessey Co Plc A jet pump
GB8925402D0 (en) * 1989-11-10 1989-12-28 British Hydromechanics Pumping liquid/gas mixture
GB2264147A (en) * 1992-02-12 1993-08-18 Peco Machine Shop & Inspection Multi-phase pumping arrangement

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Offshore, Vol.54, No8, Aug.1994, pages 52,54: M.M.Sarshar : High pressure wells drive low pressure producers *

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6026904A (en) * 1998-07-06 2000-02-22 Atlantic Richfield Company Method and apparatus for commingling and producing fluids from multiple production reservoirs
US8747679B2 (en) 2008-01-22 2014-06-10 Caltec Limited Separation system and method for separating a fluid mixture with this separating system
GB2499473A (en) * 2012-02-20 2013-08-21 Caltec Ltd Gas lift system with surface jet pump
GB2499473B (en) * 2012-02-20 2016-03-23 Caltec Ltd Improved gas lift system for oil production
US10167706B2 (en) 2015-03-13 2019-01-01 Caltec Production Solutions Limited Oil/gas production apparatus

Also Published As

Publication number Publication date
GB2296045A (en) 1996-06-19
WO1995007414A1 (en) 1995-03-16
JPH09502779A (ja) 1997-03-18
AU7542794A (en) 1995-03-27
BR9407387A (pt) 1996-10-29
ATE166703T1 (de) 1998-06-15
EP0717818A1 (de) 1996-06-26
NO307758B1 (no) 2000-05-22
NO960886L (no) 1996-03-05
DE69410619D1 (de) 1998-07-02
DK0717818T3 (da) 1999-02-15
NO960886D0 (no) 1996-03-05
GB2296045B (en) 1996-11-20
DE69410619T2 (de) 1998-12-03
ES2117291T3 (es) 1998-08-01
GB9318419D0 (en) 1993-10-20
AU687862B2 (en) 1998-03-05
GB9604504D0 (en) 1996-05-01

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