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WO1998041811A1 - Dispositif pour faciliter la mise en place de bouillies dans un forage montant - Google Patents

Dispositif pour faciliter la mise en place de bouillies dans un forage montant Download PDF

Info

Publication number
WO1998041811A1
WO1998041811A1 PCT/AU1998/000169 AU9800169W WO9841811A1 WO 1998041811 A1 WO1998041811 A1 WO 1998041811A1 AU 9800169 W AU9800169 W AU 9800169W WO 9841811 A1 WO9841811 A1 WO 9841811A1
Authority
WO
WIPO (PCT)
Prior art keywords
plug
ring
valve
passage
positioning tube
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.)
Ceased
Application number
PCT/AU1998/000169
Other languages
English (en)
Inventor
Richard G. Dixon
Edwin Herbert Baker
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.)
Silverport Pty Ltd
Original Assignee
Silverport Pty Ltd
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
Priority claimed from AUPO5668A external-priority patent/AUPO566897A0/en
Priority claimed from AUPO8548A external-priority patent/AUPO854897A0/en
Application filed by Silverport Pty Ltd filed Critical Silverport Pty Ltd
Priority to AU66030/98A priority Critical patent/AU6603098A/en
Publication of WO1998041811A1 publication Critical patent/WO1998041811A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42D—BLASTING
    • F42D1/00—Blasting methods or apparatus, e.g. loading or tamping
    • F42D1/08—Tamping methods; Methods for loading boreholes with explosives; Apparatus therefor
    • F42D1/18—Plugs for boreholes
    • 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
    • E21B33/1208—Packers; Plugs characterised by the construction of the sealing or packing means
    • 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
    • E21B33/128—Packers; Plugs with a member expanded radially by axial pressure
    • E21B33/1285—Packers; Plugs with a member expanded radially by axial pressure by fluid pressure
    • 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
    • E21B34/00—Valve arrangements for boreholes or wells
    • E21B34/06—Valve arrangements for boreholes or wells in wells
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42D—BLASTING
    • F42D1/00—Blasting methods or apparatus, e.g. loading or tamping
    • F42D1/08—Tamping methods; Methods for loading boreholes with explosives; Apparatus therefor
    • F42D1/10—Feeding explosives in granular or slurry form; Feeding explosives by pneumatic or hydraulic pressure
    • 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
    • E21B2200/00—Special features related to earth drilling for obtaining oil, gas or water
    • E21B2200/05—Flapper valves

Definitions

  • This invention relates to devices to facilitate the placing of slurries in up - holes. It is particularly applicable to the placing of explosive slurries into up- holes in underground mines.
  • Another device to facilitate the placing of slurries in up - holes from bottom to the top comprises a closure plate provided with a peripheral skirt the lower end of the skirt being flared outwardly and terminating in a sharp edge and being divided into a plurality of flexible fingers by slots extending inwardly from the edge, the plate being provided with an opening fitted with a one way valve.
  • Means are provided for detachably coupling the plug to the upper end of a positioning tube, the lower end of which is provided with means for connecting to the outlet end of a pump discharge line.
  • the plate is also provided with small openings through which an air bleeder tube and the firing line are threaded.
  • the present invention provides in one aspect a plug device having a first passage therethrough and a valve means to control the flow of fluid through said first passage, and at least a portion of the outer wall of said plug tapering inwardly towards one end of said plug to form a tapered portion, said plug further including a locking means slidably mounted on said tapered portion.
  • the plug device of the present invention enables fluid to pass through the passage.
  • This fluid may include, explosive slurry, concrete and/or water.
  • the present invention provides a substantially more effective device for placing the slurry from the bottom to the top of an up- hole by using a cylindrical plug, with at least a portion of the outer face of the plug being tapered inwardly and downwardly and the seal between the lower end of the plug and the wall of the hole is provided by an O-ring.
  • the present invention provides a device to facilitate the placing of slurries in up - holes including a substantially cylindrical plug having a passage therethrough, said passage being open at each end and at least a portion of the outer wall tapering inwardly towards one end, an O-ring slidably mounted on the tapered portion a one way valve positioned at or adjacent one end of said passage, said plug having means for detachable coupling said plug to one end of a positioning tube with the passage in alignment with the tube.
  • Means may be mounted on the plug or the positioning tube for adjusting the position of the O - ring on the tapered portion.
  • the O - ring may be of any suitable cross section to ensure a substantially leak proof seal with the wall of the up - hole. A more effective seal is obtained when the outer face of the O - ring is corrugated or the O - ring is saw toothed in configuration.
  • the outer portion of the O - ring i.e. the portion adjacent the wall of the up-hole, may also be more flexible than the inner portion.
  • Fig. 1 is a sectional view showing the initial positioning of the plug in an up-hole
  • Fig. 2 is a sectional view showing the position of the plug during the pumping of the charge of slurry into the up-hole;
  • Fig. 3 is a sectional view showing the up-hole with the charge in position prior to firing
  • Fig. 4 is a half sectional view on an enlarged scale showing the plug fitted to the positioning tube
  • Fig. 5 shows a number of alternative cross sections of the O - ring
  • Fig. 6 is a sectional view showing the replacement of the flap valve with a ball valve.
  • Fig. 7 is a sectional view showing the placement of the O - ring by pneumatic or hydraulic means.
  • Figure 8 is a sectional view showing the replacement of the flap valve with a piston valve.
  • Figure 9 is a sectional view showing the replacement of the flap valve with a pressure extrusion valve.
  • Figure 10 is a sectional view showing replacement of the flap valve with a taper seat.
  • Figure 11 shows sectional views of the plug and positioning means. DESCRIPTION
  • FIG 3 shows the condition of the plug following insertion of the slurry through the passage 13.
  • the plug 11 features an upper portion 11a which is of slightly lesser diameter than the up-hole H in which the plug 11 is placed.
  • the plug has a lower portion 11 b which tapers downwardly and inwardly. The angle of this taper can be adapted to the application in mind. Ideally, the lower portion will taper at an angle of between 5° and 25°.
  • the plug will also have a passage 13 passing therethrough to enable a fluid or any type of slurry to be pumped through as necessary.
  • a valve 15 may be placed at one end of the passage, or alternatively, at any other location throughout the passage, to enable the fluid to be pumped above the plug. When pumping of the fluid ceases, the weight of the slurry above the valve forces the valve to close thereby maintaining the slurry in position.
  • the plug is inserted up the up-hole to its desired location.
  • the locking means which ideally is an O - ring, is then forced up the tapered portion to engage both the plug and the walls of the up-hole.
  • the use of the O - ring, or other locking means, in the present invention enables the plug to accommodate diameter variances of the blast hole, or up-holes.
  • the ability of the locking means to form a flexible seal enables the plug to conform to the profile of the up-hole. That is, even if the hole diameter varies due to various factors, the present invention will still enable slurry to be filled from the bottom to the top of the hole. Ideally some form of application means will enable the plug to be placed, and locked into position, prior to filling with slurry.
  • the adjusting means can take the form of a cup shaped flange 41 adapted to bear on the O - ring 34.
  • the piston 42 When the plug 33 is in position, the piston 42 is forced upwards, thereby pushing the flange 41 into the O - ring 34. The O - ring is then forced upwardly to engage both the up-hole H wall and the plug 33.
  • the cup shape flange may form part of the piston per se, or alternatively an outer sleeve may surround the adjustment means.
  • the plug 11 can be moulded from a suitable plastic material such as polypropylene or high impact polystyrene, the upper portion 1 1 a ideally being substantially cylindrical and having an external diameter approximately that of the up-hole H in which it is to be used.
  • the lower portion 11b tapers inwardly and downwardly and has a locking means, or ideally an O - ring 12, slidably mounted thereon.
  • a cylindrical passage 13 extends from one end of the plug to the other end, the upper end being provided with a series of inwardly projecting lugs 14.
  • a flap valve 15 to close the passage 13 is secured to the upper end of the plug by screws 16 or any other suitable means.
  • the plug is mounted on the upper end of a positioning tube 17 by passing the lugs 14 through slots leading to a groove 18 on the outer face of the wall of the positioning tube and rotating the plug with respect to the tube so that the lugs engage under the upper wall of the groove.
  • a cup shaped adjusting member 19 having an internally threaded hole in the base is mounted on an externally threaded portion 20 of the tube 17 so that the wall 19a of the adjusting member 19 projects into the space between the tapered portion 11b of the plug and the wall of the up-hole H to bear against the O - ring.
  • cup shaped flange may be moved pneumatically, or hydraulically.
  • a cup shaped flange 31 is slidably mounted on the upper end of a positioning rod 32 so that when the rod is coupled to the plug 33 the flange embraces the lower end of the plug and the upper end of the flange is closely adjacent to the O - ring 34.
  • the lower portion of the flange engages the positioning rod which is stepped as indicated by reference 36 to form a chamber 37 which is connected to a passage 38 through which compressed air (alternatively hydraulic fluid or slurry) is fed to the chamber. Sealing rings 39 and 40 are fitted above and below the chamber.
  • a suitable detonator connected to a lead such as a Nonel detonator tube and an air bleed tube (represented in the drawings by a single line 22) is positioned in the up-hole against the wall thereof.
  • the plug mounted on the positioning tube is inserted into the up-hole H, the position of the O - ring being adjusted if necessary, to be friction fit in the hole.
  • the adjusting means As the plug moves upwardly any tendency for the O - ring to move downwardly is resisted by the adjusting means.
  • downward force on the positioning tube causes the O - ring to slide up the plug, expand and wedge between the wall of the up-hole and the plug to lock the plug in position.
  • the required amount of slurry is pumped into the hole through the positioning tube 17, the passage 13, and flap valve 15, into the space in the up-hole the air in the hole being displaced by the slurry passing out through the air bleed tube.
  • the positioning tube is disengaged from the plug and withdrawn leaving the charge ready for firing as shown in Fig. 3.
  • an O - ring of a cross section different to the conventional circular cross section such as square (see reference 23 in Fig. 5) or D-shaped (see reference 24 in Fig. 5) may be used, as to may oval, star or triangular shaped O-rings be used depending on the application.
  • the outer face of the O - ring may be provided with a series of corrugations 25 as shown in Fig 5 or it may be provided with saw tooth projections 26 as is also shown in Fig. 5.
  • the O - ring may be of varying flexibility across the cross section, the outer periphery being more flexible to take up variations in the wall of the hole H and seal around the air bleed tube and the firing line. The more rigid inner portion holds the O - ring in place on the tapered portion of the plug.
  • the flap valve is replaced by a ball valve 27 in which the ball 28 is retained by a series of upwardly projecting fingers 29 the outer ends of which are curved inwardly to form a cage.
  • the flap valve may be replaced by a piston valve 30 in which the piston 31 is retained by an upper flange 32.
  • fluid passing through the passage 17 forces the piston 31 up, thereby opening a path for the fluid to pass.
  • the piston returns to the start or lower position, thereby blocking fluid from returning back down the hole.
  • the flap valve can be replaced by a pressure operated extruder valve 33 in which the outer ends are curved inwardly to form a seal 34 and only under upward pressure will the fingers open to allow passage of fluid.
  • the flap valve may be replaced by a tapered seat valve 35 in which the piston 36 is retained by a pin 37. It will be understood that the valve means need not be located at the upper end of the passage, but could be located at the bottom or at any other part of the passage.
  • the lock up of the plug can be proven before pumping the slurry; and (f) variances in the designated hole size are easily accommodated with the flexibility of the O - ring and the ability to use various sizes of O - ring and O - ring of different cross sections.
  • the present invention was specifically developed to assist in the placing of explosive slurries in up-holes, however it has been found to have applications in other areas of mining. For example, when drilling underground, bodies of water are sometimes found. The head pressure of such water bodies can be great, and water or fluid can be forced through the drill hole at great velocity. In order to seal uncontrolled ground water encountered while drilling holes, whether under high pressure or not, present methods involve the use of a Van Ruth Plug.
  • the present invention provides a suitable replacement to the Van Ruth Plug, which enable the water to be blocked or pumped to a desired location.
  • the present invention can be used to facilitate the placing of concrete or chemical grouting into drilled up-holes, for example, Cable Bolting is a method currently in use to support ground which is fractured or laminated and could potentially collapse. Cable bolting requires cables, which have been pre- tensioned or post-tensioned, to be fixed into place with concrete slurry.
  • the present invention could be used to place pre-tensioned cable up into the hole and concrete slurry could then by pumped up through the passage in the plug device to fix the cables in the drilled up-hole. Accordingly, the present invention also enables a more efficient and cleaner cable bolting installation procedure.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • Geochemistry & Mineralogy (AREA)
  • General Engineering & Computer Science (AREA)
  • Check Valves (AREA)

Abstract

Dispositif en forme de bouchon (11) conçu pour être inséré dans l'extrémité inférieure d'un trou de forage montant (H). Un portion au moins de la paroi externe du bouchon (11) présente une forme conique se resserrant progressivement et porte un joint torique (12) coulissant. Un passage (13) traversant le bouchon (11) comporte une soupape (15) permettant de pomper la bouillie dans le trou de forage montant (H) de manière à le remplir de bas en haut. Le joint torique (12) peut présenter diverses configurations permettant de réaliser une étanchéité efficace contre la paroi du trou de forage (H). Le bouchon (11) peut être couplé de manière amovible à une extrémité d'un tube de positionnement (17) pour l'insertion dans le trou de forage (H). Des moyens (41) pour ajuster la position du joint torique (12) peuvent être montés sur le tube de positionnement (17) ou sur le bouchon (11).
PCT/AU1998/000169 1997-03-14 1998-03-13 Dispositif pour faciliter la mise en place de bouillies dans un forage montant Ceased WO1998041811A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU66030/98A AU6603098A (en) 1997-03-14 1998-03-13 Device to facilitate the placing of slurries in up-holes

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
AUPO5668A AUPO566897A0 (en) 1997-03-14 1997-03-14 Device to facilitate the placing of slurries in up holes
AUPO5668 1997-03-14
AUPO8548 1997-08-14
AUPO8548A AUPO854897A0 (en) 1997-08-14 1997-08-14 Device to facilitate the placing of slurries in up-holes

Publications (1)

Publication Number Publication Date
WO1998041811A1 true WO1998041811A1 (fr) 1998-09-24

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PCT/AU1998/000169 Ceased WO1998041811A1 (fr) 1997-03-14 1998-03-13 Dispositif pour faciliter la mise en place de bouillies dans un forage montant

Country Status (1)

Country Link
WO (1) WO1998041811A1 (fr)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2373799A (en) * 2001-03-30 2002-10-02 Schlumberger Holdings Cup packer
GB2386141A (en) * 2001-03-30 2003-09-10 Schlumberger Holdings Cup packer with a screen
WO2003046471A3 (fr) * 2001-11-30 2007-11-08 Viljoen Abraham Carel Procede de chargement d'un trou de mine et bouchon correspondant
WO2009147642A3 (fr) * 2008-06-05 2010-01-28 Maxam Dantex South Africa (Proprietary) Limited Procédé et appareil pour charger un trou orienté vers le haut avec un matériau apte à être pompé
CN102865040A (zh) * 2012-10-17 2013-01-09 天津德瑞克石油工具有限公司 一种套管浮力减重系统
CN105386740A (zh) * 2015-12-21 2016-03-09 核工业北京化工冶金研究院 一种垂直深孔通孔封堵孔底的方法
WO2018213917A1 (fr) * 2017-05-22 2018-11-29 Hy-Tech Drilling Ltd Bouchon de tube intérieur de trou de forage
WO2022086411A1 (fr) 2020-10-22 2022-04-28 Luossavaara Kiirunavaara Ab Système de dynamitage et procédé de charge de matériau explosif
US12416480B2 (en) 2020-10-22 2025-09-16 Luossavaara-Kiirunavaara Ab Detonator support device for charging a blasthole, blasting system, method of preparing a detonator support device, explosive material charging vehicle and data medium
US12448889B2 (en) 2020-05-20 2025-10-21 Luossavaara-Kiirunavaara Ab Raise caving method for mining deposits, and a mining infrastructure, monitoring system, machinery, control system and data medium therefor

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3910348A (en) * 1974-07-26 1975-10-07 Dow Chemical Co Drillable bridge plug
AU4897985A (en) * 1984-11-23 1986-05-29 Dyno Nobel, Inc Methods of pumping and loading emulsion slurry blasting compositions
US4829902A (en) * 1986-01-07 1989-05-16 C-I-L Inc. Method for charging flowable explosives into upwardly extending boreholes
AU5704590A (en) * 1989-06-14 1990-12-20 Aeci Limited Loading of boreholes with explosives
GB2245916A (en) * 1990-07-10 1992-01-15 Alan Gerard Vasey "Borehole plug"
AU4121093A (en) * 1992-06-15 1993-12-23 Orica Explosives Technology Pty Ltd Method of uphole loading
AU7754194A (en) * 1993-11-16 1995-05-25 Silverport Pty. Ltd. Device for facilitating the placing of slurries in up holes
WO1996013698A1 (fr) * 1994-10-26 1996-05-09 Ici Australia Operations Proprietary Limited Dispositif et procede de chargement d'explosifs en emulsion
WO1997017588A1 (fr) * 1995-11-03 1997-05-15 Orica Australia Pty Ltd Procede et dispositif de bourrage de trou de mine

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3910348A (en) * 1974-07-26 1975-10-07 Dow Chemical Co Drillable bridge plug
AU4897985A (en) * 1984-11-23 1986-05-29 Dyno Nobel, Inc Methods of pumping and loading emulsion slurry blasting compositions
US4829902A (en) * 1986-01-07 1989-05-16 C-I-L Inc. Method for charging flowable explosives into upwardly extending boreholes
AU5704590A (en) * 1989-06-14 1990-12-20 Aeci Limited Loading of boreholes with explosives
GB2245916A (en) * 1990-07-10 1992-01-15 Alan Gerard Vasey "Borehole plug"
AU4121093A (en) * 1992-06-15 1993-12-23 Orica Explosives Technology Pty Ltd Method of uphole loading
AU7754194A (en) * 1993-11-16 1995-05-25 Silverport Pty. Ltd. Device for facilitating the placing of slurries in up holes
WO1996013698A1 (fr) * 1994-10-26 1996-05-09 Ici Australia Operations Proprietary Limited Dispositif et procede de chargement d'explosifs en emulsion
WO1997017588A1 (fr) * 1995-11-03 1997-05-15 Orica Australia Pty Ltd Procede et dispositif de bourrage de trou de mine

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2373799A (en) * 2001-03-30 2002-10-02 Schlumberger Holdings Cup packer
GB2373799B (en) * 2001-03-30 2003-07-30 Schlumberger Holdings Improved cup packer
GB2386141A (en) * 2001-03-30 2003-09-10 Schlumberger Holdings Cup packer with a screen
GB2386141B (en) * 2001-03-30 2003-11-19 Schlumberger Holdings Improved cup packer
US6668938B2 (en) 2001-03-30 2003-12-30 Schlumberger Technology Corporation Cup packer
WO2003046471A3 (fr) * 2001-11-30 2007-11-08 Viljoen Abraham Carel Procede de chargement d'un trou de mine et bouchon correspondant
US8381653B2 (en) 2008-06-05 2013-02-26 Maxam Dantex South Africa (Propietary) Limited Method and apparatus for charging an upwardly oriented hole with a pumpable material
WO2009147642A3 (fr) * 2008-06-05 2010-01-28 Maxam Dantex South Africa (Proprietary) Limited Procédé et appareil pour charger un trou orienté vers le haut avec un matériau apte à être pompé
EA018208B1 (ru) * 2008-06-05 2013-06-28 Максам Дантекс Саут Эфрика (Пропрайэтри) Лимитед Способ и устройство для загрузки направленных вверх шпуров поддающимся насосной перекачке материалом
CN102865040A (zh) * 2012-10-17 2013-01-09 天津德瑞克石油工具有限公司 一种套管浮力减重系统
CN105386740A (zh) * 2015-12-21 2016-03-09 核工业北京化工冶金研究院 一种垂直深孔通孔封堵孔底的方法
CN105386740B (zh) * 2015-12-21 2018-02-13 核工业北京化工冶金研究院 一种垂直深孔通孔封堵孔底的方法
WO2018213917A1 (fr) * 2017-05-22 2018-11-29 Hy-Tech Drilling Ltd Bouchon de tube intérieur de trou de forage
US12448889B2 (en) 2020-05-20 2025-10-21 Luossavaara-Kiirunavaara Ab Raise caving method for mining deposits, and a mining infrastructure, monitoring system, machinery, control system and data medium therefor
WO2022086411A1 (fr) 2020-10-22 2022-04-28 Luossavaara Kiirunavaara Ab Système de dynamitage et procédé de charge de matériau explosif
EP4232774A4 (fr) * 2020-10-22 2024-09-04 Luossavaara Kiirunavaara Ab Système de dynamitage et procédé de charge de matériau explosif
US12209852B2 (en) 2020-10-22 2025-01-28 Luossavaara-Kiirunavaara Ab Blasting system and a method of explosive material charging
US12416480B2 (en) 2020-10-22 2025-09-16 Luossavaara-Kiirunavaara Ab Detonator support device for charging a blasthole, blasting system, method of preparing a detonator support device, explosive material charging vehicle and data medium

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