EP0892886B1 - Installation de pompage d'un effluent biphasique liquide/gaz - Google Patents

Installation de pompage d'un effluent biphasique liquide/gaz Download PDF

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Publication number
EP0892886B1
EP0892886B1 EP98904241A EP98904241A EP0892886B1 EP 0892886 B1 EP0892886 B1 EP 0892886B1 EP 98904241 A EP98904241 A EP 98904241A EP 98904241 A EP98904241 A EP 98904241A EP 0892886 B1 EP0892886 B1 EP 0892886B1
Authority
EP
European Patent Office
Prior art keywords
pump
gas
casing
liquid
well
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
EP98904241A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0892886A1 (fr
Inventor
Jean-Louis Beauquin
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.)
Elf Exploration Production SAS
Original Assignee
Elf Exploration Production SAS
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Filing date
Publication date
Application filed by Elf Exploration Production SAS filed Critical Elf Exploration Production SAS
Publication of EP0892886A1 publication Critical patent/EP0892886A1/fr
Application granted granted Critical
Publication of EP0892886B1 publication Critical patent/EP0892886B1/fr
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
    • E21B43/12—Methods or apparatus for controlling the flow of the obtained fluid to or in wells
    • E21B43/121—Lifting well fluids
    • E21B43/128—Adaptation of pump systems with down-hole electric drives

Definitions

  • the present invention relates to an installation pumping a two-phase liquid / gas effluent and, more particularly to such an installation intended for pumping of hydrocarbons from an oil well.
  • the natural flow hydrocarbons from the bottom to the surface is insufficient to allow or maintain commercial production. This is due either to the viscosity and the weight of the effluents, or to too low a natural pressure at the bottom of the well, in look at the factors that oppose their elevation towards the area.
  • a system should be used artificial elevation of the effluent, or system well activation. For example, you can mount a pump at the lower end of a production tube located in the well, or an injection facility can be provided gas at the bottom of the well. The latter type of installation, plus commonly called "gas lift", used to lighten the column of hydrocarbons located in the well to facilitate its ascent to the surface.
  • a gas injection installation at the bottom of the well is generally reliable, but has the drawback of require, on an isolated site, a gas source under pressure, for example a compressor and its piping associated.
  • gases and liquids end up separating by gravity at the bottom of the well, which in some cases creates serious pump malfunctions during restart if the accumulated gas gets into the pump, or if, due to this transient regime, a large gas bubble may have formed inside the pump.
  • the document FR-A-2.723.143 describes an installation for wells tanker with a pump arranged at the end bottom of a first casing, a second casing being intended to receive, where appropriate, gas from the effluent and separated upstream of the pump, and to conduct it up to the surface regardless of the liquid phase
  • the pump in order to promote the separation of gas from the effluent at the bottom of the well, the pump is fitted with a shirt, which extends to a level below the layer of petroleum rock. So the entering effluent in the well is forced to descend before being aspirated by the pump, which has the effect of ensuring excellent separation of the gas intended to pass through the casing independent.
  • the subject of the present invention is therefore a pumping system for a two-phase liquid / gas effluent which is simple, robust and reliable, and which is not subject to the drawbacks mentioned above.
  • the present invention offers a pumping installation intended to be mounted in a well extending from the surface to a layer of petroleum rock, including casing at the end bottom of which is mounted a pump, a seal, mounted in the well around the casing and delimiting a chamber the lower end of the well, in which is disposed the pump, characterized in that the installation comprises, plus, a hydro-ejector in the casing comprising an area depression opening in the upper end of the bedroom.
  • a well tanker 10 extends between the surface (not shown) and a layer of petroleum rock 12.
  • the well is provided with perforations 14, opening in the oil-bearing rock, which allow the flow of the hydrocarbon effluent to the interior of the well 10.
  • the well 10 includes a casing 16 which makes it waterproof compared to the layers of rock crossed by the well.
  • a casing 18 extends between the surface and a point a few meters above the rock layer 12.
  • Casing 18 has at its lower end a pump 20 provided of inputs 22 for the effluent to be sent to the surface.
  • the pump 20 is centrifugal rotary and its engine is powered from the surface by a electric cable (not shown).
  • the pump 20 may advantageously include a special separator to baffle or dynamic centrifugal or vortex type in order to better guarantee separation upstream of the pump (not represented. Without such a separator, separation takes place usually by gravity in room 31 where find, at a relatively low speed taking into account the section of their passage, the raw effluents leaving the perforations.
  • the packer 28 defines an annular chamber 33 delimited by the internal wall of the casing 16 and the wall external of the casing 18 between the seal 28 and the surface.
  • the packer 28 prohibits effluents and in particular gas from enter room 33. They cannot cross the part superior to the well than by borrowing the casing 18.
  • the room 33 and all the accessories it contains such as the power cable of the pump 20 are therefore preserved mechanical and chemical attack and remains available for other functions such as for example reception a heat-insulating substance to insulate casing 18.
  • the casing 18 comprises a liquid-gas hydro-ejector 32, or venturi, intended to create a depression area inside 34 by venturi effect.
  • the liquid-gas hydro-ejector 32 comprises orifices 36 connecting the area of depression 34 and the gas pocket 30.
  • the pump 20 When switching on the installation of pumping described above, the pump 20 is set in motion, sucking liquid effluent through inlets 22 and the driving back, in the direction of arrow 38, towards the surface.
  • the passage of the effluent through the liquid-gas hydro-ejector 32 creates a depression in its interior due to its converging geometry, depression causing the suction through the orifices 36 of the gas from the gas pocket 30 in the direction of the arrows 40.
  • the gas In the interior of the hydro-ejector, the gas is then entrained by the liquid effluent from pump 20 to which it mixes and recombines, thus reducing the column of effluent contained in the casing 18, thus facilitating its ascent to the surface.
  • Figure 2a shows schematically the normal configuration of flows, corresponding to that described above with reference to Figure 1.
  • the modes of operation of the invention shown in Figures 2B and 2C have additional features allowing the installation to react better in transient or transient degraded situations, and make it more efficient and effective.
  • FIG. 2A shows schematically the characteristics of the installation of figure 1.
  • the mixture of the recombined liquid with the gas is sent to the surface by the casing 18 in the direction of the arrow 50.
  • FIG. 2B schematically represents the situation where, in an installation according to the invention, the pump 20 sucks effluent with a high proportion of gas or contains large gas bubbles in its impellers. Centrifugal pumps do not tolerate gas bubbles well not being adapted to repress such effluents. It is therefore wise to facilitate the evacuation of these bubbles towards pump output before continuing to send the effluent to the surface.
  • the invention proposes to relieve the repression of the pump 20 with, on the one hand, a non-return valve 52 in the tubing 18 between the pump 20 and the hydro-ejector 32 for prohibit the return of effluents to pump 20 and support the weight of hydrostatic column, and, on the other share, a lateral opening 54 located under this valve and allowing the lateral evacuation of the formed effluents essentially gas to the annular chamber 31.
  • This valve 52 and the lateral opening 54 are preferably systems that can be set up and removed from the well at cable by an operation commonly called “wire-line” in order to make their maintenance inexpensive.
  • wire-line an operation commonly called "wire-line” in order to make their maintenance inexpensive.
  • the lateral opening 54 must close as soon as a certain liquid effluent flow and higher pressure, will again reached when pump 20 is discharged.
  • operation of this lateral opening 54 may be either controlled from the surface using a command line electric or hydraulic depending on parameters available on the surface, or be automatically piloted locally with for example the discharge pressure of the pump 20, there is the pressure difference due to friction the effluent between the inlet and the outlet of the opening lateral 54.
  • This principle is used in gate valves security called "storm-choke”.
  • FIG. 2C schematically represents a installation intended to alleviate the problems which can occur when the level 24 of the liquid exceeds that of the hydro-ejector 32.
  • the hydro-ejector 32 is more or less capable of performing this selection naturally by "hydraulic blocking". This is the phenomenon that plays when in jet pumping liquid-liquid, the jet makes a "gas-lock", ie can no longer entrain liquid. This condition is obtained for a sufficient flow of liquid Student.
  • the second consists in using a float intended for close the lateral gas inlet of the hydro-ejector 32 when liquid from chamber 31 lifts it.
  • This float here again would be a system that could fish out the cable and which could for example be installed in a "Side-pocket", through which all the gas from the pocket 30 before entering the hydro-ejector 32.
  • the third, also cable recovery, would be the equivalent of the float but with a different technology, for example, clapper or other “storm choke” closing in the process
  • liquid-gas hydro-ejector 32 and the accessories corresponding to the functions shown in Figures 2B and 2C as well as the movable element of the pump are advantageously arranged to allow their ascent to the cable surface when maintenance is required.
  • the liquid-gas hydro-ejector can be mounted in the casing at a point above the joint, the area of depression communicating with the room by a conduit which crosses the joint.

Landscapes

  • Geology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • Physics & Mathematics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Jet Pumps And Other Pumps (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Feeding And Controlling Fuel (AREA)
  • Sampling And Sample Adjustment (AREA)
  • Nozzles (AREA)
EP98904241A 1997-01-31 1998-01-28 Installation de pompage d'un effluent biphasique liquide/gaz Expired - Lifetime EP0892886B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR9701113A FR2759113B1 (fr) 1997-01-31 1997-01-31 Installation de pompage d'un effluent biphasique liquide/gaz
FR9701113 1997-01-31
PCT/FR1998/000157 WO1998034009A1 (fr) 1997-01-31 1998-01-28 Installation de pompage d'un effluent biphasique liquide/gaz

Publications (2)

Publication Number Publication Date
EP0892886A1 EP0892886A1 (fr) 1999-01-27
EP0892886B1 true EP0892886B1 (fr) 2002-07-31

Family

ID=9503202

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98904241A Expired - Lifetime EP0892886B1 (fr) 1997-01-31 1998-01-28 Installation de pompage d'un effluent biphasique liquide/gaz

Country Status (11)

Country Link
US (1) US6250384B1 (ru)
EP (1) EP0892886B1 (ru)
AT (1) ATE221613T1 (ru)
BR (1) BR9805955A (ru)
CA (1) CA2251611C (ru)
DE (1) DE69806865T2 (ru)
FR (1) FR2759113B1 (ru)
NO (1) NO315288B1 (ru)
OA (1) OA10890A (ru)
RU (1) RU2201535C2 (ru)
WO (1) WO1998034009A1 (ru)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BR0011410A (pt) 1999-06-07 2002-06-04 Univ Texas Sistema de produção e método para produzir fluidos a partir de um reservatório
US6926080B2 (en) * 2000-05-31 2005-08-09 Zinoviy Dmitrievich Khomynets Operation method of an oil well pumping unit for well development and device for performing said operation method
BR0004685B1 (pt) * 2000-10-05 2009-01-13 mÉtodo e dispositivo para estabilizaÇço da produÇço de poÇos de petràleo.
US6817409B2 (en) 2001-06-13 2004-11-16 Weatherford/Lamb, Inc. Double-acting reciprocating downhole pump
GB2393763B (en) * 2001-06-26 2005-05-25 Weatherford Lamb Electrical pump for use in well completion
NL1021004C2 (nl) * 2002-07-04 2004-01-06 Rasenberg Milieutechniek B V Inrichting en werkwijze voor het verwijderen van vluchtige verontreinigingen uit grondwater.
US6761215B2 (en) * 2002-09-06 2004-07-13 James Eric Morrison Downhole separator and method
US7195072B2 (en) * 2003-10-14 2007-03-27 Weatherford/Lamb, Inc. Installation of downhole electrical power cable and safety valve assembly
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
AU2008350168A1 (en) * 2008-02-06 2009-08-13 Statoil Petroleum As Gas-liquid separator
US9016387B2 (en) * 2011-04-12 2015-04-28 Halliburton Energy Services, Inc. Pressure equalization apparatus and associated systems and methods
RU2536521C1 (ru) * 2013-10-02 2014-12-27 Открытое акционерное общество "Татнефть" им. В.Д. Шашина Установка для эксплуатации водозаборных скважин
RU2605571C1 (ru) * 2015-10-06 2016-12-20 Олег Марсович Гарипов Способ интенсификации добычи нефти гарипова и установка для его осуществления

Family Cites Families (14)

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Publication number Priority date Publication date Assignee Title
US1757267A (en) * 1926-12-23 1930-05-06 Kellogg M W Co Gas-oil separator
US2030159A (en) * 1934-10-01 1936-02-11 Bernard H Scott Automatic control system for atomizing and lifting oil with gas
US2080622A (en) * 1935-03-23 1937-05-18 Mcmahon William Frederick Apparatus for entraining oil and gas from oil wells
US2872985A (en) * 1956-12-26 1959-02-10 Phillips Petroleum Co Cyclone gas anchor
US3746089A (en) * 1971-07-19 1973-07-17 Dresser Ind Apparatus for producing multiple zone oil and gas wells
US4481020A (en) * 1982-06-10 1984-11-06 Trw Inc. Liquid-gas separator apparatus
FR2584134B1 (fr) * 1985-06-26 1988-05-20 Inst Francais Du Petrole Procede et equipement pour l'exploitation de gisements d'hydrocarbures comportant une phase gazeuse separee de la phase liquide
US4632184A (en) * 1985-10-21 1986-12-30 Otis Engineering Corporation Submersible pump safety systems
US4676308A (en) * 1985-11-22 1987-06-30 Chevron Research Company Down-hole gas anchor device
US4790376A (en) * 1986-11-28 1988-12-13 Texas Independent Tools & Unlimited Services, Inc. Downhole jet pump
WO1992008037A1 (en) * 1990-11-03 1992-05-14 Peco Machine Shop & Inspection Services Ltd. Downhole jet pump system using gas as driving fluid
US5259450A (en) * 1992-09-17 1993-11-09 Qed Environmental Systems, Inc. Vented packer for sampling well
GB9318419D0 (en) * 1993-09-06 1993-10-20 Bhr Group Ltd Pumping liquids using a jet pump
FR2723143B1 (fr) * 1994-07-29 1996-09-27 Elf Aquitaine Installation pour puits petrolier

Also Published As

Publication number Publication date
BR9805955A (pt) 1999-08-31
OA10890A (en) 2003-02-18
NO984544D0 (no) 1998-09-29
FR2759113A1 (fr) 1998-08-07
FR2759113B1 (fr) 1999-03-19
CA2251611A1 (fr) 1998-08-06
US6250384B1 (en) 2001-06-26
NO315288B1 (no) 2003-08-11
RU2201535C2 (ru) 2003-03-27
ATE221613T1 (de) 2002-08-15
NO984544L (no) 1998-09-29
CA2251611C (fr) 2005-09-13
EP0892886A1 (fr) 1999-01-27
WO1998034009A1 (fr) 1998-08-06
DE69806865T2 (de) 2003-03-13
DE69806865D1 (de) 2002-09-05

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