EP0653546A1 - Elément de séparation pour l'espace entre deux corps creux emboîtés, en particulier pour des tubes pour puits - Google Patents

Elément de séparation pour l'espace entre deux corps creux emboîtés, en particulier pour des tubes pour puits Download PDF

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Publication number
EP0653546A1
EP0653546A1 EP94117417A EP94117417A EP0653546A1 EP 0653546 A1 EP0653546 A1 EP 0653546A1 EP 94117417 A EP94117417 A EP 94117417A EP 94117417 A EP94117417 A EP 94117417A EP 0653546 A1 EP0653546 A1 EP 0653546A1
Authority
EP
European Patent Office
Prior art keywords
retaining ring
wall
circumferential groove
partition
well pipe
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.)
Withdrawn
Application number
EP94117417A
Other languages
German (de)
English (en)
Inventor
Bruno Bernhardt
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.)
IEG Industrie Engineering GmbH
Original Assignee
IEG Industrie Engineering GmbH
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 IEG Industrie Engineering GmbH filed Critical IEG Industrie Engineering GmbH
Publication of EP0653546A1 publication Critical patent/EP0653546A1/fr
Withdrawn legal-status Critical Current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
    • E21B33/00—Sealing or packing boreholes or wells
    • E21B33/10—Sealing or packing boreholes or wells in the borehole
    • 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
    • E21B33/00—Sealing or packing boreholes or wells
    • E21B33/10—Sealing or packing boreholes or wells in the borehole
    • E21B33/12—Packers; Plugs
    • E21B33/124—Units with longitudinally-spaced plugs for isolating the intermediate space
    • 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
    • E21B33/00—Sealing or packing boreholes or wells
    • E21B33/10—Sealing or packing boreholes or wells in the borehole
    • E21B33/12—Packers; Plugs
    • E21B33/126—Packers; Plugs with fluid-pressure-operated elastic cup or skirt

Definitions

  • the invention relates to a partition for the space between telescoped and relatively adjustable cylindrical hollow bodies, in particular for well pipes, to form cavity regions which are sealed against one another, the partition being anchored on one of the relatively adjustable cylindrical bodies.
  • dividing walls of the type mentioned at the outset have to be brought to a different altitude, for example in the case of a well pipe, an inserted riser pipe or another well pipe insert to which the dividing wall is anchored.
  • the elastic retaining ring or rings which bring about the mutual sealing of the cavity areas, will hinder an adjustment of the inner cylindrical body due to the formation of negative pressure or generally due to an excessively good sealing seat.
  • the invention is therefore based on the object of forming a partition of the type mentioned in such a way that it does not hinder a subsequent adjustment of a cylindrical body holding it.
  • the retaining rings which normally cause the sealing between two cavity regions or also the holding of bodies which are introduced, for example, into a well pipe, have an axial play in the peripheral annular groove provided for them of a disk anchoring the partition on a cylindrical body, that the retaining ring , which can also consist of several concentric and loosely opposed individual rings, can assume an oblique position with respect to its axis of symmetry when the body carrying the disk is axially adjusted, which can lead to the lifting of its sealing system on the inner wall of an outer cylindrical hollow body or on the groove base.
  • This ensures that, for example, when a well pipe insert is shifted within the well pipe, no negative pressure can arise in any of the well pipe areas that are separated from one another and normally sealed off from one another, which could hinder or even block an adjustment of the well pipe insert.
  • the width of a retaining ring receiving circumferential groove of the disk can suitably correspond to at least twice the thickness of the retaining ring and the depth of the circumferential groove at least the distance between the circumferential wall of the disk and the inner wall of the well pipe.
  • the side walls of the circumferential groove can also have bores so that the liquid or air to be sealed can reach the end faces of the retaining ring unhindered.
  • FIG. 1 shows a section of a well pipe 10, which has an open well wall section 10.3 through slots 11 between an upper closed-wall well pipe section 10.1 and a lower closed-wall well pipe section 10.2. That through the open-walled well pipe section 10.3 delimited well pipe area 12 is in each case delimited from the adjacent upper well pipe area 13 and the adjacent lower well pipe area 14 by a partition wall 15. Both partition walls 15 are of identical design and are anchored concentrically on a riser pipe 20. In the exemplary embodiment shown, they consist of a disk 16, the diameter of which is smaller than the inside diameter of the well pipe 10 and which has on its outside two parallel circumferential grooves 17 and 18, in each of which a retaining ring 19 is inserted.
  • the width of the retaining rings 19 is selected so that when the partition 15 is inserted, they bear both tightly against the bottom of the grooves 17 and 18 and tightly against the inside of the well pipe 10.
  • the disc 16 of the partition walls 15 can be made of a suitable stable, rigid or semi-rigid material.
  • the retaining rings 19 consist of a more or less elastically deformable material depending on the strength requirements in the individual case, for example silicone rubber, which allows frictional sliding under pressure or tension both on the inside of the well pipe 10 and on the base of the circumferential grooves 17 and 18.
  • FIGS. 2 and 3 show a dividing wall 15 ′′, the disc 16 ′′ anchored on a coaxial riser tube 20 ′′ has only a single groove 17 ′′ for a retaining ring 19 ′′.
  • the width of the groove 17 '' for the retaining ring 19 '' has twice the value of the thickness of the retaining ring 19 ''.
  • the retaining ring projects into the circumferential groove 17 ′′ over half its width.
  • the depth of the circumferential groove 17 "corresponds at least to the distance between the outer wall of the disk 16" from the inner wall of the well pipe 10 "and the average radius M of the retaining ring 19" within the circumferential groove 17 '' runs.
  • FIG. 2 shows the partition 15 '' and its retaining ring 19 '' in a rest and sealing position, in which the retaining ring 19 '' under slight tension arch with its outer edge on the inner wall of the well pipe 10 '' and with its inner edge on the Because of the circumferential groove 17 '' of the disc 16 '' supports.
  • FIG 3 shows the retaining ring 19 ′′ in an inclined position, into which it automatically tilts in the direction of the arrow 23 when the riser pipe 20 ′′ is adjusted lengthwise.
  • this position there is no sealing contact of the outer edge of the retaining ring 19 '' on the inner wall of the well pipe 10 '', so that - as indicated by arrows 24 - water or air can flow from the upper well pipe area 13 into the lower well pipe area 12 , that is, a pressure equalization between these two well pipe areas is achieved, which does not hinder the adjustment movement of the riser pipe 20 ′′ in the direction of arrow 23.
  • the retaining ring 19 ′′ automatically returns to a sealing position when a pressure difference between the areas 12 and 13 occurs.
  • Fig. 4 shows a retaining ring, which consists of two identical and loosely opposed individual rings 19 "/ 1 and 19" / 2.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Centrifugal Separators (AREA)
  • Mutual Connection Of Rods And Tubes (AREA)
  • Joints With Sleeves (AREA)
EP94117417A 1993-11-11 1994-11-04 Elément de séparation pour l'espace entre deux corps creux emboîtés, en particulier pour des tubes pour puits Withdrawn EP0653546A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19934338518 DE4338518A1 (de) 1993-11-11 1993-11-11 Trennwandung für den Zwischenraum zwischen ineinandergeschobenen Hohlkörpern, insbesondere für Brunnenrohre
DE4338518 1993-11-11

Publications (1)

Publication Number Publication Date
EP0653546A1 true EP0653546A1 (fr) 1995-05-17

Family

ID=6502353

Family Applications (2)

Application Number Title Priority Date Filing Date
EP94115735A Withdrawn EP0653545A1 (fr) 1993-11-11 1994-10-06 Elément de séparation pour l'espace entre deux corps creux emboîtés, en particulier pour des tubes pour puits
EP94117417A Withdrawn EP0653546A1 (fr) 1993-11-11 1994-11-04 Elément de séparation pour l'espace entre deux corps creux emboîtés, en particulier pour des tubes pour puits

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP94115735A Withdrawn EP0653545A1 (fr) 1993-11-11 1994-10-06 Elément de séparation pour l'espace entre deux corps creux emboîtés, en particulier pour des tubes pour puits

Country Status (2)

Country Link
EP (2) EP0653545A1 (fr)
DE (1) DE4338518A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8899339B2 (en) 2008-02-29 2014-12-02 Exxonmobil Upstream Research Company Systems and methods for regulating flow in a wellbore
CN115288637A (zh) * 2022-06-23 2022-11-04 大庆信辰油田技术服务有限公司 一种油水井脉动解堵增产方法及脉动解堵增产装置

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10251078B3 (de) * 2002-11-02 2004-06-03 H. Butting Gmbh & Co. Kg Abdichtungssystem für den Zwischenraum im Übergangsbereich zweier Brunnenrohre unterschiedlicher Durchmesser und Montagewerkzeug hierzu
DE102007050966A1 (de) * 2007-10-23 2009-04-30 Nillert, Peter, Dr. Ing. Vorrichtung und Verfahren zum Aktivieren oder Reinigen von Brunnen

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3057004A (en) * 1960-05-26 1962-10-09 Kaloust P Sogoian Hydraulic door closer
US3224378A (en) * 1964-01-09 1965-12-21 George C Graham Fluid pressure piston seal and valve
DE1232528B (de) * 1962-05-14 1967-01-12 Liss Olof Hilding Johansson Rohrbrunnen
US4279306A (en) * 1979-08-10 1981-07-21 Top Tool Company, Inc. Well washing tool and method

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2314311A1 (fr) * 1975-08-07 1977-01-07 Bonnevalle Bernard Procede et appareillage pour le decolmatage des sondages et drains de captage d'eau
DE7909727U1 (de) * 1979-04-04 1979-07-05 Subterra Methoden Gmbh, 3000 Hannover Dichtung zur gegenseitigen abdichtung zweier konzentrisch zueinander verlaufender rohre, insbesondere eines brunnenrohres und eines darin verlaufenden steigrohres
DE8120151U1 (de) * 1981-07-10 1981-12-17 Roth, Siegfried, 6220 Rüdesheim In brunnen einsetzbares geraet zum reinigen des brunnenfilters und der diesen umgebenden kieshinterfuellung

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3057004A (en) * 1960-05-26 1962-10-09 Kaloust P Sogoian Hydraulic door closer
DE1232528B (de) * 1962-05-14 1967-01-12 Liss Olof Hilding Johansson Rohrbrunnen
US3224378A (en) * 1964-01-09 1965-12-21 George C Graham Fluid pressure piston seal and valve
US4279306A (en) * 1979-08-10 1981-07-21 Top Tool Company, Inc. Well washing tool and method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8899339B2 (en) 2008-02-29 2014-12-02 Exxonmobil Upstream Research Company Systems and methods for regulating flow in a wellbore
CN115288637A (zh) * 2022-06-23 2022-11-04 大庆信辰油田技术服务有限公司 一种油水井脉动解堵增产方法及脉动解堵增产装置

Also Published As

Publication number Publication date
EP0653545A1 (fr) 1995-05-17
DE4338518A1 (de) 1995-05-18

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