EP0757758B1 - Installation et procede d'extraction par pompage d'un liquide a partir de la croute terrestre - Google Patents

Installation et procede d'extraction par pompage d'un liquide a partir de la croute terrestre Download PDF

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Publication number
EP0757758B1
EP0757758B1 EP95916853A EP95916853A EP0757758B1 EP 0757758 B1 EP0757758 B1 EP 0757758B1 EP 95916853 A EP95916853 A EP 95916853A EP 95916853 A EP95916853 A EP 95916853A EP 0757758 B1 EP0757758 B1 EP 0757758B1
Authority
EP
European Patent Office
Prior art keywords
screw member
earth
screw
counter
installation
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
EP95916853A
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German (de)
English (en)
Other versions
EP0757758A1 (fr
Inventor
Engelbert Josephus Van Den Boogaard
Hendrik Geert Cornelis Berkhoff
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.)
Houttuin BV
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Houttuin BV
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Publication date
Application filed by Houttuin BV filed Critical Houttuin BV
Publication of EP0757758A1 publication Critical patent/EP0757758A1/fr
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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
    • F04C13/00—Adaptations of machines or pumps for special use, e.g. for extremely high pressures
    • F04C13/008—Pumps for submersible use, i.e. down-hole pumping

Definitions

  • Liquids from the earth's crust such as petroleum are usually pumped up either with a suction pump (for instance a so-called nodding donkey) or with a pump lowered into a drilled hole and having a screw-like member.
  • a suction pump for instance a so-called nodding donkey
  • a pump for this purpose usually comprises a screw member (rotor) of metal which is rotatably drivable relative to a statically arranged member (stator) of rubber or plastic-like material.
  • EP-A-0168366 is an apparatus for pumping up oil wherein both the pump and the drive means are immersed in the oil or other liquids.
  • maintenance of the drive means has to be carried out, the whole apparatus must be raised from the bore hole to above the ground surface, which is time-consuming and whereby oil extraction must be interrupted.
  • This apparatus further makes use of balancing collars, whereby the bearing construction will be subject to wear due to sand or dirt occurring in the liquid, while this bearing construction is also complicated and play can easily occur therein.
  • EP-A-0280294 Also known from the European patent application EP-A-0280294 is a device, with which the earth's crust can be inspected for test purposes. Contrary to the above mentioned pumps, the pump contained in the device is located at the earth's surface. However in this application use is made of a worm pump instead of a screw pump that usually is employed for pumping up (large amounts of) oil. The device according to this application is therefore not suitable for pumping up oil or other liquids from the earth's crust.
  • German Offenlegungsschrift DE-A-3718863 is a screw pump for use in an automobile which, if only because of the dimensions, is not suitable for pumping up oil or other liquids from the earth's crust.
  • the present invention provides an installation for pumping up liquids from the earth's surface, comprising:
  • the drive means are disposed close to the earth's surface and the driving movement is transmitted to the lowered screw pump via transmission means, maintenance of the drive means can be performed easily and large standstill losses can be avoided.
  • the screw member and/or the counter-screw member are preferably provided with slide bearings, wherein lubrication can take place by the liquid for pumping up. This also prevents the screw member and/or the counter-screw member from lying against the housing of the pump, so that wear is limited to a minimum. It is anticipated that the lifespan of a screw pump according to the present invention will amount to a minimum of 10,000 hours before maintenance thereon has to be carried out.
  • Two or more screw pumps are preferably lowered into the earth in series. If in this preferred embodiment both screw pumps are designed to produce a pumping pressure of 30 bar, in total 60 bar, it may occur that due to small differences in dimensioning of each of the screw pumps one of the two screw pumps produces in the first instance a pressure greater than 30 bar. After a time the pressure build-up by this first screw pump will decrease slightly due to a certain degree of wear, wherein this decrease is however compensated by the second screw pump, so that the total required 60 bar is maintained.
  • the present invention further provides a method for pumping liquids from the earth's crust, wherein one or more screw pumps, each comprising a screw member and a counter-screw member, is lowered into a hole drilled in the earth's surface, wherein the first screw member is driven close to or above the earth's surface and the counter-screw member is driven by the screw member and wherein the liquid is pumped up between the screw member and the second screw member.
  • one or more screw pumps each comprising a screw member and a counter-screw member
  • a first preferred embodiment of an installation 1 according to the present invention contains drive means 8 disposed on the ground S and provided with a connecting flange 2 for connection to a drain pipe 3 for the pumped-up oil.
  • Driven by drive means 8 is a tube, rod or shaft 4 which transmits the drive power to a depth of for instance 1000 or 2000 metres in the ground to an assembly of two screw pumps 5 and 6.
  • Each of the screw pumps, for instance screw pump 6, comprises a driven screw member 7 and a counter-screw member 9 which is driven by the associated screw member.
  • Screw member 7 and counter-screw member 9 are mutually adapted such that the liquid is transported between the helical grooves and helical ridges, while the counter-screw member follows precisely the movement of the screw member.
  • the screw member and the counter-screw member are preferably manufactured from hardened stainless steel which can withstand temperatures of 300°C and is little subject to wear. It can further be seen, particularly in fig. 1, 2 and 6, that the drive rod 4 and the screw pumps 5 and 6 can be received in a closed housing which has for instance a largest diameter d of about 15 cm so that the installation can be applied in a bore hole with such a dimension which may or may not be provided with a cemented casing.
  • a pressure of about 30-40 Bar can be produced by the above described screw pump shown in the figures, so that the petroleum can be pumped from a considerable depth, for instance 1000-3000 metres.
  • screw pumps When a number of screw pumps are placed in series in the manner shown it is possible to work at still greater depth.
  • the screw members and counter-screw members are preferably provided in each case with axial and radial bearing elements 30, 31, respectively 32, 33, 34 and 35 (fig. 5) of ceramic material which are lubricated by the petroleum for pumping up.
  • Fig. 3 shows a second preferred embodiment of an installation for performing the method according to the present invention, wherein a first pump 10 is lowered to great depth while a second screw pump 11 is situated close to the surface at ground level S. If maintenance has to be carried out on this second screw pump 11 the drive rod 4' does not have to be withdrawn completely from the bore hole.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Details And Applications Of Rotary Liquid Pumps (AREA)
  • Rotary Pumps (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Claims (6)

  1. Installation (1) destinée à pomper un liquide provenant de la croûte terrestre, comprenant:
    une pompe à vis (5,6) descendue dans la terre, laquelle est munie d'un premier élément (7) formant vis et d'un élément (9) formant contre-vis, le liquide étant transporté ou pompé vers le haut entre des rainures et des arêtes hélicoïdales passant entre les rainures, caractérisée par:
    des moyens d'entraínement (8) placés sur ou près de la surface et distants de la pompe à vis, et destinés à entraíner l'élément (7) formant vis, lequel à son tour entraíne l'élément (9) formant contre-vis;
    des moyens de transmission mécanique (4) destinés à transmettre mécaniquement la force d'entraínement produite par les moyens d'entraínement (8), lesquels moyens de transmission mécanique s'étendent depuis les moyens d'entraínement (8) placés sur ou près de la surface de la terre jusqu'à la pompe à vis (5,6) descendue; et
    un ou plusieurs paliers (30 à 35) en céramique à glissement de sens axial et/ou radial, pour monter à l'aide de paliers le premier élément formant vis et/ou l'élément formant contre-vis qui sont tous deux descendus à un niveau sensiblement en-dessous de la surface de la terre.
  2. Installation (1) selon la revendication 1, caractérisée en ce que les moyens de transmission comprennent un ou plusieurs arbres (4).
  3. Installation (1) selon la revendication 1 ou 2, caractérisée en ce que le premier élément (7) formant vis et/ou l'élément (9) formant contre-vis sont fabriqués dans un matériau dur et résistant.
  4. Installation (1) selon la revendication 3, caractérisée en ce que ledit matériau est un acier inoxydable trempé.
  5. Installation selon la revendication 1, 2 ou 3, caractérisée en ce que deux ou plusieurs pompes à vis sont placées en série sous la surface de la terre.
  6. Procédé pour pomper un liquide à partir de la croûte terrestre, dans lequel une ou plusieurs pompes à vis (5,6), chacune comprenant un élément (7) formant vis et un élément (9) formant contre-vis, est (sont) descendue(s) dans un trou foré dans la surface la terre, le premier élément (7) formant vis étant entraíné près ou au-dessus de la surface de la terre, et l'élément (9) formant contre-vis étant entraíné par l'élément (7) formant vis, le liquide étant pompé entre l'élément (7) formant vis et l'élément (9) formant contre-vis, et des paliers pour l'élément formant vis et l'élément (9) formant contre-vis étant lubrifiés par le liquide pompé.
EP95916853A 1994-04-29 1995-04-28 Installation et procede d'extraction par pompage d'un liquide a partir de la croute terrestre Expired - Lifetime EP0757758B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
NL9400708 1994-04-29
NL9400708A NL9400708A (nl) 1994-04-29 1994-04-29 Werkwijze en inrichting voor het oppompen van vloeistof uit de aardkorst.
PCT/NL1995/000157 WO1995030090A1 (fr) 1994-04-29 1995-04-28 Installation et procede d'extraction par pompage d'un liquide a partir de la croute terrestre

Publications (2)

Publication Number Publication Date
EP0757758A1 EP0757758A1 (fr) 1997-02-12
EP0757758B1 true EP0757758B1 (fr) 1998-10-28

Family

ID=19864142

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95916853A Expired - Lifetime EP0757758B1 (fr) 1994-04-29 1995-04-28 Installation et procede d'extraction par pompage d'un liquide a partir de la croute terrestre

Country Status (5)

Country Link
EP (1) EP0757758B1 (fr)
AU (1) AU2319995A (fr)
DE (1) DE69505653T2 (fr)
NL (1) NL9400708A (fr)
WO (1) WO1995030090A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2216501A1 (fr) 2009-02-10 2010-08-11 BP Exploration Operating Company Limited Pompe

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1653930A1 (de) * 1967-02-07 1971-10-07 Warren Pump Inc Tauchpumpe
US4017223A (en) * 1975-03-24 1977-04-12 Houdaille Industries, Inc. Axial thrust adjustment for dual screw-type pump
SE407839B (sv) * 1977-09-15 1979-04-23 Imo Industri Ab Skruvmaskin
DE3345233C2 (de) * 1983-12-14 1985-10-31 Joh. Heinrich Bornemann GmbH & Co KG, 3063 Obernkirchen Exzenterschneckenpumpe zum Fördern von Flüssigkeiten aus Bohrlöchern, insbesondere aus Erdöl-Bohrlöchern
SE463682B (sv) * 1984-06-20 1991-01-07 Imo Ab Hydraulisk skruvmaskin, foeretraedesvis utnyttjad som pump avsedd att nedsaenkas i ett borrhaal
US4828036A (en) * 1987-01-05 1989-05-09 Shell Oil Company Apparatus and method for pumping well fluids
DE3706378C1 (de) * 1987-02-27 1988-08-18 Eastman Christensen Co Testrohrstrang fuer Tiefbohrungen
DE3718863C2 (de) * 1987-06-05 1999-01-28 Allweiler Ag Schraubenspindelpumpe
US5190450A (en) * 1992-03-06 1993-03-02 Eastman Kodak Company Gear pump for high viscosity materials
FR2696792B1 (fr) * 1992-10-13 1994-12-09 Inst Francais Du Petrole Système de pompage comportant une pompe volumétrique à grand débit.

Also Published As

Publication number Publication date
WO1995030090A1 (fr) 1995-11-09
AU2319995A (en) 1995-11-29
DE69505653T2 (de) 1999-03-25
EP0757758A1 (fr) 1997-02-12
NL9400708A (nl) 1995-12-01
DE69505653D1 (de) 1998-12-03

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