EP0417009A1 - Vorrichtung und Anlage zur Reinigung von Abzugskanälen, insbesondere bei Erdölbohrlöchern - Google Patents

Vorrichtung und Anlage zur Reinigung von Abzugskanälen, insbesondere bei Erdölbohrlöchern Download PDF

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Publication number
EP0417009A1
EP0417009A1 EP90402457A EP90402457A EP0417009A1 EP 0417009 A1 EP0417009 A1 EP 0417009A1 EP 90402457 A EP90402457 A EP 90402457A EP 90402457 A EP90402457 A EP 90402457A EP 0417009 A1 EP0417009 A1 EP 0417009A1
Authority
EP
European Patent Office
Prior art keywords
fluid
duct
deflector
downstream
conduits
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.)
Granted
Application number
EP90402457A
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English (en)
French (fr)
Other versions
EP0417009B1 (de
Inventor
Henri Cholet
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.)
IFP Energies Nouvelles IFPEN
Original Assignee
IFP Energies Nouvelles IFPEN
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 IFP Energies Nouvelles IFPEN filed Critical IFP Energies Nouvelles IFPEN
Publication of EP0417009A1 publication Critical patent/EP0417009A1/de
Application granted granted Critical
Publication of EP0417009B1 publication Critical patent/EP0417009B1/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
    • E21B41/00—Equipment or details not covered by groups E21B15/00 - E21B40/00
    • E21B41/0078—Nozzles used in boreholes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/26—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with means for mechanically breaking-up or deflecting the jet after discharge, e.g. with fixed deflectors; Breaking-up the discharged liquid or other fluent material by impinging jets
    • B05B1/262—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with means for mechanically breaking-up or deflecting the jet after discharge, e.g. with fixed deflectors; Breaking-up the discharged liquid or other fluent material by impinging jets with fixed deflectors
    • B05B1/267—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with means for mechanically breaking-up or deflecting the jet after discharge, e.g. with fixed deflectors; Breaking-up the discharged liquid or other fluent material by impinging jets with fixed deflectors the liquid or other fluent material being deflected in determined directions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto 
    • B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
    • B08B9/027—Cleaning the internal surfaces; Removal of blockages
    • B08B9/032—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing
    • B08B9/035—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing by suction
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto 
    • B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
    • B08B9/027—Cleaning the internal surfaces; Removal of blockages
    • B08B9/04—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes
    • B08B9/043—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes moved by externally powered mechanical linkage, e.g. pushed or drawn through the pipes
    • B08B9/0433—Cleaning the internal surfaces; Removal of blockages using cleaning devices introduced into and moved along the pipes moved by externally powered mechanical linkage, e.g. pushed or drawn through the pipes provided exclusively with fluid jets as cleaning tools
    • 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
    • E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
    • E21B21/12—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor using drilling pipes with plural fluid passages, e.g. closed circulation systems
    • 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
    • E21B37/00—Methods or apparatus for cleaning boreholes or wells

Definitions

  • the present invention relates to apparatus and installations for cleaning horizontal drains in oil production wells.
  • Patent US-A-4,744,420 discloses a device for cleaning such horizontal drains, which comprises at the end of two concentric casings a body provided with nozzles or nozzles for projecting a cleaning fluid, this body delimiting a cleaning fluid supply path, connected to said nozzles, as well as a return path of this fluid charged with solid particles of sand or other sediments, these two paths being respectively connected to one of the two conduits delimited by the two concentric casings.
  • the spray nozzles for cleaning fluid are arranged at the end of the body and oriented substantially parallel to the axis of the drain. Such an arrangement tends to expel in front of the device the sand and the other sediments accumulated in the drain.
  • the invention proposes to solve, so as to achieve more effective cleaning of such horizontal or substantially horizontal drains.
  • the subject of the invention is an apparatus for cleaning a horizontal or gently sloping drain, adapted to be arranged at the downstream end of two concentric casings delimiting two equally concentric conduits, this apparatus comprising a body which is provided at its end with at least one fluid projection nozzle and which delimits on the one hand a cleaning fluid supply path and on the other hand a return path for the fluid loaded with solid particles of sand or other sediments, these two paths being intended to be connected respectively to the two conduits delimited by the casings, characterized in that it comprises deflector means suitable for directing the jet of fluid leaving the or each nozzle towards the wall of the drain .
  • the deflector is arranged so as to orient the jet of fluid downwards
  • the deflector is articulated on a support itself fixed on the downstream part of the body
  • the fluid supply path comprises, from upstream to downstream, in the body, an annular conduit, at least one radial passage and an axial conduit
  • the return path of the fluid loaded with particles comprises, downstream upstream, at least one duct extending from the side wall of the front part of the body, at least one longitudinal duct, an annular duct surrounding a driving fluid injector and an axial duct, the annular duct and the axial duct of the return path form a venturi which constitutes with the injector a suction device
  • the injector is supplied with working fluid from the radial passage and the axial duct of the supply path, the fluid flow being distributed in the axial duct in two opposite flows, directed respectively towards the nozzle and towards the injector
  • the body is connected at its rear or upstream part to a connector comprising two sets of conduits which
  • the invention also relates to an installation comprising such an apparatus and further characterized in that it comprises a connection box divided into two chambers connected at their upstream part to two casings arranged side by side and at their downstream part to the two concentric casings.
  • FIG. 1 shows a horizontal or substantially horizontal drain section 10 connected to a main casing 1 (FIG. 6).
  • This device comprises a body 20 produced in several parts, in this case three, produced and arranged so as to fulfill several functions which will be described in more detail below. These three parts are: an external part 22, a front central part 24 and a rear central part 26.
  • the outer part 22 is received in a sheath 28 whose inner surface 29 preferably has a frustoconical shape, this sheath being fixed in any suitable known manner to the end of the casing 16, for example by means of a collar 30.
  • This outer part 22 is hollow and has at its end directed downstream of the device a head 32 projecting from the sheath and which is pierced with an axial duct 34 and three conduits 35, separated from the conduit 34 and which open into the side wall of the head 32.
  • the conduits 35 are arranged at 120 o relative to one another. Depending on the size of the device, a greater number of such conduits can be provided, for example 6.
  • the conduit 34 opens into a housing 36 in which is fixed a nozzle 38 for spraying fluid.
  • the deflector 44 is mounted on a ball joint 46 and has an unbalance sufficient to occupy a determined position relative to the adjacent drain, the concave wall 45 of this deflector being directed towards the bottom wall of this drain.
  • this concave part 45 to 45 b can take various forms, depending on whether one wishes to obtain a wide jet (Fig. 2) or a narrower jet (Fig. 3).
  • the part 22 of the body comprises a housing 48 in which is received the central part 24 of the body which delimits, on the one hand, an axial through conduit 50 arranged in the extension of the conduit 34, at least one radial passage 52 making this central duct communicate with an annular duct 54 delimited between the central parts of the body and the external part, and at least one longitudinal duct 56, which is part of the return path of the fluid loaded with solid particles.
  • three conduits 56 are provided, arranged in the extension of the three conduits 35.
  • the outer part of the body has a tubular shape with a frustoconical intermediate portion 22 a and two cylindrical end portions 22 b , 22 c , the end portion 22 b of smaller diameter being connected to the inner casing 14 by a fitting 60.
  • the latter includes two sets of conduits: a first set of three conduits 62 which provide communication between the interior 19 of the casing 14 and an annular conduit 64 delimited between the exterior part of the body and the rear central part 26 of this same body, - A second set of three conduits 66 ensuring communication between the annular space 17 delimited between the two casings, and the axial conduit 73 of the body.
  • the rear central part 26 of the body is fixed on the one hand to the internal downstream end of the connector 60 and on the other hand to the external wall of the front central body 24.
  • the part 26 forms a venturi and delimits a converging cone 68, a neck 70 then a divergent cone 72 to constitute with an injector 74 fixed in the central body a suction device whose function will be specified below.
  • the outer casing is held in the drain 10 by an elastic centering device 76 of known construction.
  • a cup 78 is interposed between the outer casing 16 and the connector 60 in order to avoid the deposit of sand or other solid particles at the end of the annular gap 80 delimited between the body and the outer casing.
  • the inner casing 14 is supplied with fluid, in this case water, from the surface.
  • fluid in this case water
  • This fluid, arriving in the connector 60 passes from the axial duct 19 to the annular duct 64 delimited between the central and external parts of the body, to reach the radial passage 58.
  • the working fluid is divided into two directed flows, one towards the nozzle 38 and the other towards the injector 74.
  • the respective sections of the nozzle and the injector are chosen so as to obtain a determined distribution of the flow rate, which can be for example 3 / 5th of the incident flow in the direction of the injector and 2 / 5th in the direction of the nozzle 38.
  • the jet of fluid emitted by the nozzle 38 is deflected by the deflector 44 towards the lower wall of the drain and causes effective agitation of the solid particles of sand or other sediments accumulated in the drain.
  • the fluid charged with these particles is sucked at the level of the conduit 35, this suction effect being caused in the venturi 68-72 by the second flow of working liquid, emitted by the injector 74.
  • the working fluid and the working liquid particles mix in the part 70, 72 of the body and are directed towards the surface by crossing the connection 60 by the conduits 66 and by traversing the annular conduit 17 delimited between the two casings.
  • the concave shape of the deflector makes it possible to give the jet an optimal shape, according to the size and the consistency of the sandy deposits.
  • this deposit is often made coherent by deposits of hydrocarbons, which makes the energy concentration effect obtained by the apparatus according to the invention all the more important.
  • FIG. 4 and 5 There is shown in Figures 4 and 5 a mounting variant of the deflector, according to which the ball joint of Figure 1 is replaced by a mounting around an axis 82 on which the deflector is mounted oscillating.
  • the unbalance of the deflector can be obtained by various means such as the asymmetrical shape of the deflector, the asymmetrical lightening of the latter or the use of materials with different densities.
  • the device can be the subject of many other variants, both in the production of the parts that compose it and in the number and arrangement of the various supply and return conduits for the cleaning fluid.
  • FIG. 6 represents a main casing 12 which extends from the surface and which comprises a substantially vertical part, then a curved part, to be extended by the substantially horizontal drain 10.
  • the external casing 16 provided with its centering device 76 and carrying the sleeve 28 at its end is introduced into this main casing.
  • the casings 14 and 16 can be formed either by rigid tubes screwed to each other, or by continuous elements unwound from the surface.
  • the installation can of course be completed by connecting the inner casing to a pump supplying water under an appropriate pressure, and by connecting the outer casing to known means for extracting the liquid laden with particles.
  • connection box 100 is used for this purpose making it possible to switch from a concentric arrangement of the casings 14, 16 downstream of this box, to a side-by-side arrangement, upstream of said box.
  • the connection box 100 is divided into two chambers 102, 104 of which the first 102 can be connected at its upper part to a casing 106 whose section corresponds to the section of the annular gap between the two concentric casings 14 and 16 while it opens at its lower end into a section of tube 108 which can be connected by a connector 110 to the upper part of the outer casing 16.
  • Figure 9 is a block diagram, the shapes are actually adapted to assume a good flow.
  • the second chamber 104 is connected at its upper part to a casing 112 of the same section as the inner casing 14, while at its lower part it opens into a section of tube 114 which can be connected to the inner casing 14, either by a simple connection if the two inner and outer casings are substantially at the same level, preferably by a sleeve 116 and a fitting 118, as is generally the case, the two concentric casings do not have the same length.
  • connection box 100 is lowered into the main casing, the additional casing elements 106 and 112 being added to the upper part of this box, when the device must be advanced down the drain.
  • the casing 112 is connected to a pump 114 and the casing 106 to a settling tank 116.
  • Such an arrangement is particularly advantageous because it facilitates the addition of additional tubing, the side-by-side arrangement being in this respect much more favorable than the concentric arrangement.
  • the device according to the invention also has great flexibility of use and adaptation.
  • the orientable or articulated deflector can be replaced by a fixed deflector disposed substantially perpendicular to the axial jet, and which projects the fluid onto a 360 o angle.
  • the conduits 35 may in particular have an axial direction.

Landscapes

  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • Physics & Mathematics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Mechanical Engineering (AREA)
  • Jet Pumps And Other Pumps (AREA)
  • Cleaning In General (AREA)
  • Removal Of Floating Material (AREA)
  • Cleaning By Liquid Or Steam (AREA)
EP90402457A 1989-09-07 1990-09-06 Vorrichtung und Anlage zur Reinigung von Abzugskanälen, insbesondere bei Erdölbohrlöchern Expired - Lifetime EP0417009B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8911693A FR2651451B1 (fr) 1989-09-07 1989-09-07 Appareil et installation pour le nettoyage de drains, notamment dans un puits de production petroliere.
FR8911693 1989-09-07

Publications (2)

Publication Number Publication Date
EP0417009A1 true EP0417009A1 (de) 1991-03-13
EP0417009B1 EP0417009B1 (de) 1994-08-17

Family

ID=9385209

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90402457A Expired - Lifetime EP0417009B1 (de) 1989-09-07 1990-09-06 Vorrichtung und Anlage zur Reinigung von Abzugskanälen, insbesondere bei Erdölbohrlöchern

Country Status (6)

Country Link
US (1) US5086842A (de)
EP (1) EP0417009B1 (de)
CA (1) CA2024866C (de)
DK (1) DK0417009T3 (de)
FR (1) FR2651451B1 (de)
NO (1) NO300282B1 (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1992018749A1 (en) * 1991-04-23 1992-10-29 Den Norske Stats Oljeselskap A.S Device for collecting particulate matter and debris in horizontal or high deviation oil or gas wells
EP0519793A2 (de) * 1991-06-21 1992-12-23 Institut Français du Pétrole Vorrichtung und Installation zur Reinigung von Dränrohren, insbesondere in Erdölproduktionsbohrungen
FR2687084A1 (fr) * 1992-02-06 1993-08-13 Framatome Sa Dispositif de nettoyage a distance de la paroi interne d'un tube.
EP0623396A1 (de) * 1993-05-04 1994-11-09 Friedhelm Ehle Vorrichtung zum Reinigen von Abwasserkanälen oder Leitungen
EP0768436A2 (de) * 1995-10-09 1997-04-16 Norbert Giesler Vorrichtung zum Trennen fester Bestandteile von Flüssigkeiten, insbesondere Strasseneinlauf, Bausatz und Abdeckung zu deren Herstellung und Spül- und Saugrohr zu deren Wartung

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US3730592A (en) * 1971-06-01 1973-05-01 Fmc Corp Method of subterranean drilling and mining
US4630691A (en) * 1983-05-19 1986-12-23 Hooper David W Annulus bypass peripheral nozzle jet pump pressure differential drilling tool and method for well drilling
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Cited By (9)

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WO1992018749A1 (en) * 1991-04-23 1992-10-29 Den Norske Stats Oljeselskap A.S Device for collecting particulate matter and debris in horizontal or high deviation oil or gas wells
EP0519793A2 (de) * 1991-06-21 1992-12-23 Institut Français du Pétrole Vorrichtung und Installation zur Reinigung von Dränrohren, insbesondere in Erdölproduktionsbohrungen
FR2678021A1 (fr) * 1991-06-21 1992-12-24 Inst Francais Du Petrole Appareil et installation pour le nettoyage de drains, notamment dans un puits de production petroliere.
EP0519793A3 (en) * 1991-06-21 1993-03-10 Institut Francais Du Petrole Device and installation for the cleaning of drain pipes, in particular in oil production wells
US5280825A (en) * 1991-06-21 1994-01-25 Institut Francais Du Petrole Device and installation for the cleaning of drains, particularly in a petroleum production well
FR2687084A1 (fr) * 1992-02-06 1993-08-13 Framatome Sa Dispositif de nettoyage a distance de la paroi interne d'un tube.
EP0623396A1 (de) * 1993-05-04 1994-11-09 Friedhelm Ehle Vorrichtung zum Reinigen von Abwasserkanälen oder Leitungen
EP0768436A2 (de) * 1995-10-09 1997-04-16 Norbert Giesler Vorrichtung zum Trennen fester Bestandteile von Flüssigkeiten, insbesondere Strasseneinlauf, Bausatz und Abdeckung zu deren Herstellung und Spül- und Saugrohr zu deren Wartung
EP0768436A3 (de) * 1995-10-09 1997-07-23 Norbert Giesler Vorrichtung zum Trennen fester Bestandteile von Flüssigkeiten, insbesondere Strasseneinlauf, Bausatz und Abdeckung zu deren Herstellung und Spül- und Saugrohr zu deren Wartung

Also Published As

Publication number Publication date
NO300282B1 (no) 1997-05-05
US5086842A (en) 1992-02-11
FR2651451B1 (fr) 1991-10-31
DK0417009T3 (da) 1994-09-12
NO903864L (no) 1991-03-08
CA2024866A1 (fr) 1991-03-08
EP0417009B1 (de) 1994-08-17
FR2651451A1 (fr) 1991-03-08
CA2024866C (fr) 2000-09-19
NO903864D0 (no) 1990-09-05

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