EP1657365A2 - Verfahren zur Auskleidung von Schächten - Google Patents

Verfahren zur Auskleidung von Schächten Download PDF

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Publication number
EP1657365A2
EP1657365A2 EP05110530A EP05110530A EP1657365A2 EP 1657365 A2 EP1657365 A2 EP 1657365A2 EP 05110530 A EP05110530 A EP 05110530A EP 05110530 A EP05110530 A EP 05110530A EP 1657365 A2 EP1657365 A2 EP 1657365A2
Authority
EP
European Patent Office
Prior art keywords
tube
well
lining
segments
crimping
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Withdrawn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
EP05110530A
Other languages
English (en)
French (fr)
Other versions
EP1657365A3 (de
Inventor
M. Michel Seguin
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.)
Hydro-Invest
Original Assignee
Hydro-Invest
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 Hydro-Invest filed Critical Hydro-Invest
Publication of EP1657365A2 publication Critical patent/EP1657365A2/de
Publication of EP1657365A3 publication Critical patent/EP1657365A3/de
Withdrawn legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
    • E03B3/00—Methods or installations for obtaining or collecting drinking water or tap water
    • E03B3/06—Methods or installations for obtaining or collecting drinking water or tap water from underground
    • E03B3/08—Obtaining and confining water by means of wells
    • E03B3/15—Keeping wells in good condition, e.g. by cleaning, repairing, regenerating; Maintaining or enlarging the capacity of wells or water-bearing layers
    • 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
    • E21B43/02—Subsoil filtering
    • E21B43/10—Setting of casings, screens, liners or the like in wells
    • E21B43/103—Setting of casings, screens, liners or the like in wells of expandable casings, screens, liners, or the like

Definitions

  • the present invention relates to a method of lining wells.
  • Wells such as water wells are drilled into the ground and have a continuous tube liner made from segments connected over the entire height of the well to double the natural well wall and provide a watertight seal. the height of the well.
  • the walls of the tubes must in particular be sealed to prevent any contamination of the water captured by water infiltration of the layers of land above the capture point, particularly in the case of a drinking water collection.
  • Another method is to insert sleeves at the corroded portions and, using an expansion tool having either rollers or an inflatable cylindrical bladder lowered into the well below the portion on which the sleeve is to be crimped, crimp these inner sleeves inside the tube in the deteriorated areas.
  • an expansion tool having either rollers or an inflatable cylindrical bladder lowered into the well below the portion on which the sleeve is to be crimped, crimp these inner sleeves inside the tube in the deteriorated areas.
  • the application of the sleeve can cause a rupture of the tube at the junction between one end of the sleeve and the tube which irreparably damages the well, the laying of a second sleeve on the first sleeve and the original tube becoming impossible .
  • the present invention relates to a simple lining method to be implemented for the re-conditioning of an already existing well whose walls are deteriorated and ensuring a good seal over the complete height of the well without causing an excessive reduction of the section of the well. well.
  • the present invention mainly relates to a method for lining a well comprising an old tube, characterized in that a first tube segment is brought vertically to the well inlet, the lower end of the tube is welded. a second tube segment at the upper end of the first tube segment, the welded pipe segments are lowered into the well, leaving the end of the second tube segment of the upper end of the tube well, the operation is repeated, with respectively a third and the second tube segments, the third tube segment taking the place of the second and so on with tube segments successively brought to complete lining of the well by a tube nine, and, in a complementary step, the entire new tube is crimped onto the old tube in the well by a succession of positioning, inflation and displacement of a crimping tool.
  • the tube is crimped from the top of the well to the bottom of the well.
  • air is blown between the new tube and the internal section of the old tube in such a way as to drive down the water infiltrated between the new tube and the internal section of the old tube before crimping the new tube. on the old tube.
  • the lining method of a well 1 comprising an old tube A implemented according to the invention is described schematically in FIG. 1 after a step of successively feeding successive segments of tubes S1,..., Sn and during a step crimping of the new tube constituted by the segments S1, ..., Sn on the old tube.
  • the method comprises a step of vertically feeding and welding the segments of tubes shown schematically in FIG. 6, and according to which a lower segment Sp is kept protruding from the upper end of the well, for example by a flange 11 then that an upper segment Sp + 1 is brought vertically by a crane using ropes 13, 13 'and a flange 12 to be welded by a peripheral weld 14 to the lower segment Sp.
  • the lining of the well is begun by vertically feeding a first segment of tube S1 partially inserted into the well inside the old tube A, feeding a second tube segment S2 above the first using a simple crane 10, the welding of the lower end of the second tube segment S2 at the upper end of the first tube segment.
  • the first segments of welded tubes are lowered into the well, leaving the end of the second tube segment of the upper end of the well by loosening the flange 11 and descending the segment S2 until at the height previously occupied by the first segment and by clamping the flange 11 on the second segment to retain it and be able to secure a third segment S3 with the flange 12 in the place previously occupied by the second segment.
  • the new complete tube is crimped onto the old tube A in the well by a succession of positioning, inflation and displacement of a crimping tool 3.
  • the crimping tool 3 is an inflatable peripheral bladder tool that allows the internal tube to be crimped in a regular manner on the outer old tube.
  • This technique is particularly suitable for crimping stainless steel tubes of the order of 4 mm and over coated with a layer of external protective material prior to their supply, the use of an inflatable bladder tool not risking to injure the protective material.
  • the crimping operation is preferably performed from the top of the well to the bottom of the well and the length and number of the tube segments is calculated to account for the upward shrinkage of the complete tube due to the expansion caused. by crimping. For example, for segments of welded tubes of 6m length, a shrinkage of around 3.5 to 6% is taken into account. requires going deeper into the well than the final height of the tube.
  • a problem solved by the invention is the existence of crimping defects caused by the presence of infiltration water due to the deterioration of the old tube which can cause crimping defects of the new tube as shown in FIG.
  • bumps are problematic because, first, they cause a local fragility of the tube, secondly if the water is trapped at the junction by welding two tubes, it can cause a rupture of the weld or a leak and thirdly, the bosses can block the new pump that has to be lowered into the well.
  • air 4 is blown along the crimping between the new tube and the internal section of the old tube A in order to drive the down the water 5 infiltrated between the new tube and the internal section of the old tube before crimping the new tube on the old tube.
  • the blown air can not escape from the top and therefore push water possibly trapped between the tubes down. Successive crimping operations then being done in the absence of water are thus perfectly controlled.
  • the blowing of the air is carried out by means of an injector device 6 provided with peripheral nozzles and lowered into the well under the lower level of the new tube.
  • the injector device 6 is secured to a ballast 7 of the hose 16 bringing the air under pressure through the crimping tool 3 and on which the tool slides as shown in FIG.
  • An important problem solved by the invention is the crimping of welded tubes.
  • the tube segments S1, ..., Sp, ..., Sn are provided with an external peripheral chamfer 9 on their ends, an example of which is shown in FIG. figure 5.
  • This outer chamfer preferably made about 50% of the thickness of the tube constitutes an annular receiving zone of the V-weld at the junction of the tube segments as particularly shown in Figure 6 where the tube is shown in partial section.
  • the tube segments are welded at the level of said outer chamfer to obtain a regular annular weld bead in the annular V-shaped groove delimited by the chamfers of butt tubes.
  • the tube segments are coated, prior to their supply, with a layer of the order of 0.5 to 2 mm of a protective material such as an elastomer or an insulating flexible coating applied as a paint on the outer face of the tube segments and for sealing and electrical isolation of the tube.
  • a protective material such as an elastomer or an insulating flexible coating
  • the chamfer is devoid of protective material and, once welded, the weld area is covered with an insulating paint, insulating tape or other sealing material and electrical insulation, the entire tube being thus protected.
  • the embodiment of the chamfer further avoids an edge-to-edge weld that may leave gaps between the pipe segments, through which the generally elastomeric envelope of the crimping tool may flow and break.
  • the method according to the invention is simple to implement without using a specific drilling tool and, in particular, the tube segments, the crimping tool and the air blowing device 6 are lowered into the well. using a simple crane 10.
  • FIG. 1 describes various means of a particular embodiment of the method, namely an air compression unit 15 for supplying the device 6 for blowing air through a hose 16 passing through the tool crimping 3 and unwound at the compression unit, a crane 10 for lowering the tube segments in the well and down the crimping tool 3, a high pressure hydraulic unit 18 to perform the successive inflations of the crimping tool 3 connected to the crimping tool by a high-pressure hose 20, the carrier cable 8 on which the crimping tool 3 descends and a control and recording rack 18 in connection with control electronics and measuring 19 at the crimping tool 3 through an electrical cable comprising the electrical connections between the control panel and the control and measurement electronics and to which the tool 3 is attached.
  • an air compression unit 15 for supplying the device 6 for blowing air through a hose 16 passing through the tool crimping 3 and unwound at the compression unit
  • a crane 10 for lowering the tube segments in the well and down the crimping tool 3
  • the control and recording chamber 18 in connection with the control and measurement electronics 19 in particular allows the remote control of the crimping tool, the sequential control of its descent, inflation and deflation according to the height of the pipe segments and the position of the welds to prevent the limit of a crimping being at a weld, the measurement of the depth of the well, the position of the tool 3 and the device air blowing, checking the crimping diameter of the crimping tool diameter and the air injection pressure.
  • the invention is not limited to the example shown and in particular any other gas that air can be injected by the insufflation device 6.

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Environmental & Geological Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Health & Medical Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Public Health (AREA)
  • Water Supply & Treatment (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
EP05110530A 2004-11-15 2005-11-09 Verfahren zur Auskleidung von Schächten Withdrawn EP1657365A3 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0452618A FR2877989B1 (fr) 2004-11-15 2004-11-15 Procede de chemisage de puits

Publications (2)

Publication Number Publication Date
EP1657365A2 true EP1657365A2 (de) 2006-05-17
EP1657365A3 EP1657365A3 (de) 2007-10-31

Family

ID=34950282

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05110530A Withdrawn EP1657365A3 (de) 2004-11-15 2005-11-09 Verfahren zur Auskleidung von Schächten

Country Status (2)

Country Link
EP (1) EP1657365A3 (de)
FR (1) FR2877989B1 (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2915264A1 (fr) 2007-04-20 2008-10-24 Saltel Ind Soc Par Actions Sim Procede de chemisage d'un puits ou d'une canalisation au moyen d'une vessie gonflable.
WO2008135356A1 (fr) 2007-04-20 2008-11-13 Saltel Industries Procédé de chemisage à zones expansées multiples au moyen d'une vessie gonflable
FR2934634A1 (fr) * 2009-11-09 2010-02-05 Saltel Ind Dispositif de pose d'une chemise expansible avec controle du diametre de pose a l'avancement
SE545263C2 (en) * 2020-01-13 2023-06-13 Lamminranta Oy Method for rehabilitating a drilled well

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3477506A (en) * 1968-07-22 1969-11-11 Lynes Inc Apparatus relating to fabrication and installation of expanded members
US20040144535A1 (en) * 2003-01-28 2004-07-29 Halliburton Energy Services, Inc. Post installation cured braided continuous composite tubular

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
ALBERT MABILLOT: "Le forage d'eau", BROCHURE, 1971, XP003017479
INFLATABLE PACKERS INT'L PTY LTD: "Slim-line re-lining", 30 June 2000 (2000-06-30), pages 4 PG-S, XP003017478

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2915264A1 (fr) 2007-04-20 2008-10-24 Saltel Ind Soc Par Actions Sim Procede de chemisage d'un puits ou d'une canalisation au moyen d'une vessie gonflable.
WO2008135356A1 (fr) 2007-04-20 2008-11-13 Saltel Industries Procédé de chemisage à zones expansées multiples au moyen d'une vessie gonflable
FR2934634A1 (fr) * 2009-11-09 2010-02-05 Saltel Ind Dispositif de pose d'une chemise expansible avec controle du diametre de pose a l'avancement
WO2011054687A1 (fr) 2009-11-09 2011-05-12 Saltel Industries Dispositif de pose d'une chemise expansible avec contrôle du diamètre de pose à l'avancement
CN102713134A (zh) * 2009-11-09 2012-10-03 索泰尔实业公司 用于在前进时实施具有应用直径控制的可扩张裙部的设备
RU2509869C2 (ru) * 2009-11-09 2014-03-20 Сальтель Индюстри Устройство для установки расширяемой внутренней облицовки с контролем установочного диаметра по мере продвижения
EA020831B1 (ru) * 2009-11-09 2015-02-27 Сальтель Индюстри Устройство для установки расширяемой внутренней облицовки с контролем установочного диаметра по мере продвижения
US9163487B2 (en) 2009-11-09 2015-10-20 Saltel Industries Device for applying an expandable skirt having application diameter control upon advance
NO343532B1 (no) * 2009-11-09 2019-04-01 Saltel Ind En innretning for utlegging av en utvidbar foring
SE545263C2 (en) * 2020-01-13 2023-06-13 Lamminranta Oy Method for rehabilitating a drilled well

Also Published As

Publication number Publication date
FR2877989B1 (fr) 2007-02-09
EP1657365A3 (de) 2007-10-31
FR2877989A1 (fr) 2006-05-19

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