EP4004331A2 - Tête de forage et procédé pour la réalisation d'un forage vertical dans le sol - Google Patents

Tête de forage et procédé pour la réalisation d'un forage vertical dans le sol

Info

Publication number
EP4004331A2
EP4004331A2 EP20746138.5A EP20746138A EP4004331A2 EP 4004331 A2 EP4004331 A2 EP 4004331A2 EP 20746138 A EP20746138 A EP 20746138A EP 4004331 A2 EP4004331 A2 EP 4004331A2
Authority
EP
European Patent Office
Prior art keywords
opening
drilling
suction box
soil
loosened
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
EP20746138.5A
Other languages
German (de)
English (en)
Other versions
EP4004331C0 (fr
EP4004331B1 (fr
Inventor
Patrick RENNKAMP
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.)
Herrenknecht AG
Original Assignee
Herrenknecht AG
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 Herrenknecht AG filed Critical Herrenknecht AG
Priority to EP24165434.2A priority Critical patent/EP4411105A3/fr
Publication of EP4004331A2 publication Critical patent/EP4004331A2/fr
Application granted granted Critical
Publication of EP4004331C0 publication Critical patent/EP4004331C0/fr
Publication of EP4004331B1 publication Critical patent/EP4004331B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • 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
    • E21B10/00—Drill bits
    • E21B10/42—Rotary drag type drill bits with teeth, blades or like cutting elements, e.g. fork-type bits, fish tail bits
    • 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
    • E21B10/00—Drill bits
    • E21B10/60—Drill bits characterised by conduits or nozzles for drilling fluids
    • E21B10/602—Drill bits characterised by conduits or nozzles for drilling fluids the bit being a rotary drag type bit with blades
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
    • E21D9/10—Making by using boring or cutting machines
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
    • E21D9/10—Making by using boring or cutting machines
    • E21D9/1006—Making by using boring or cutting machines with rotary cutting tools
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
    • E21D9/10—Making by using boring or cutting machines
    • E21D9/11—Making by using boring or cutting machines with a rotary drilling-head cutting simultaneously the whole cross-section, i.e. full-face machines
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D1/00—Sinking shafts
    • E21D1/03—Sinking shafts mechanically, e.g. by loading shovels or loading buckets, scraping devices, conveying screws
    • E21D1/06—Sinking shafts mechanically, e.g. by loading shovels or loading buckets, scraping devices, conveying screws with shaft-boring cutters

Definitions

  • the invention relates to a drilling head and a method for creating a substantially vertical bore in the ground, in particular for creating a shaft, with a body that can be connected to a rotary drive of a drilling device, with drilling tools arranged on the body for loosening the soil on a face the bore, with a conveying device for removing the loosened soil on the face, which can be connected to a suction unit for sucking in a conveying medium via a conveying line, the conveying device having an opening area arranged on the body with at least one opening in the area of the drilling tools on the face.
  • Such a drill head is known for example from US 4646853 A, EP 2597249 B1, US 3384191 A, US 4195700 A and US 4200160 A.
  • US 4646853 A discloses an apparatus and a method for sinking a shaft.
  • a cutting wheel rotatable about a vertical axis is provided for loosening the bottom.
  • Mechanical conveyance with buckets is provided for conveying away the loosened soil.
  • EP 2597249 B1 shows a drilling device for drilling vertical bores in the ground with a drill head that rotates on a face.
  • a suction device is provided which has an opening which is arranged on the outside of the end of the drill head facing the face and rotates with the drill head.
  • loosened soil is removed from the borehole.
  • US 3384191 A shows a drill head with roller bits, which also has a suction system for removing the loosened soil.
  • a guide plate is provided that is arranged in the area of the opening of the suction and collects the loosened soil when the drill head rotates and feeds it to the opening. Behind the opening there is a sloping channel which opens into a centrally arranged discharge line.
  • US 4195700 A also discloses a drill head with roller bits, which has a radial opening at the inner end of which a discharge line is provided.
  • the opening is designed as a slot, behind which a conically shaped tube is provided that widens towards the discharge line.
  • US 4200160 A discloses a drill head with a suction system for removing the loosened soil.
  • the suction provides a slot-shaped radial opening which opens into a cylindrical space. A channel emerges from this, which leads into the sewer.
  • the object of the invention is to simplify the suction in the aforementioned drill heads and at the same time to improve their performance.
  • the at least one opening of the opening area is connected to a suction box as part of the discharge device, which has a connection opening for a connection to the conveying line at an end opposite the opening, that at least one element is provided, which exerts an acceleration on the loosened soil in the area of the suction box, through which the soil loosened by the drilling tools can be moved into the opening area and / or through the opening in the suction box, the loosened soil in the opening area, preferably in the opening and / or in the
  • the suction box is captured by the conveying medium and can be conveyed away by the suction unit via the conveying line.
  • the at least one element is at least one nozzle which is provided directed into the opening area and which emits at least one jet of a transport medium to effect the acceleration.
  • Another teaching of the invention provides that behind the opening at least one deflection area is provided, preferably in front of the entry into the suction box, in which the flow direction of the loosened soil can be deflected. In this way, the material to be conveyed away can be fed to the conveying system in a particularly simple manner and then conveyed away.
  • Another teaching of the invention provides that at least one tool for loosening the bottom, preferably in the form of a toothed strip, and / or for picking up loosened soil is provided in the opening area. This allows rock / soil to be loosened / picked up on the face directly in the opening area. The material dissolved / absorbed in this way can be particularly easily fed to the suction system.
  • the at least one tool can be moved to change the distance between the tool and the face, preferably via at least one hydraulic cylinder, and / or that the at least one tool can be pivoted relative to the opening area, preferably via at least one hydraulic cylinder.
  • a further teaching of the invention provides that the distance between the opening area and the working face can be adjusted. It is advantageous that the distance is adjusted by moving the suction box vertically and / or by pivoting the suction box around a pivot point, a drive, preferably a hydraulic cylinder or a spring mechanism, being provided for the movement or for the pivoting. In this way, the amount of extracted material can be influenced directly in a simple manner.
  • the opening area is provided with a cleaning tool, preferably at least one movable element and / or at least one nozzle for dispensing a medium, for example a gas (air) or a liquid (water, bentonite flushing).
  • a cleaning tool preferably at least one movable element and / or at least one nozzle for dispensing a medium, for example a gas (air) or a liquid (water, bentonite flushing).
  • a further teaching of the invention provides that at least one flushing nozzle is provided with which soil loosened by at least one drilling tool can be transported into an area on the working face over which the suction box travels when drilling with the drilling head. This improves the transport of material to the suction box in a simple manner.
  • the suction box is provided interchangeably in the drill head. This allows the drill head to be easily adapted to different geological conditions. A reversal of the direction of rotation is also possible.
  • a classification element is provided in the opening area. This can be, for example, a grid, metal dividers which divide the opening area into several openings, or several openings. This makes it possible in a simple manner to limit the grain size of the sucked-in material.
  • suction box is arranged essentially horizontally. This has a positive effect on the material transport in the suction box and the material pick-up.
  • the opening area extends essentially radially outward, as seen from the center point. It is advantageous that the opening is elongated or slit-like.
  • a further teaching of the invention provides that the clear cross-section of the opening along the opening area changes, preferably enlarged, when viewed radially outward. In this way, the material uptake, the location of the material uptake and the uptake quantity can be influenced in a simple manner.
  • connection opening of the suction box is arranged offset with respect to the opening area with respect to a perpendicular perpendicular to the opening area, preferably outwards.
  • the suction box is constructed asymmetrically.
  • the suction strength or the flow profile in the suction box or in the opening area can be influenced in a simple manner, so that the amount of material sucked in can be influenced. For example, by moving it outwards, the flow in the radially outer area of the suction box can be increased in order to be able to better suck off the larger amount of material that occurs there.
  • connection opening of the suction box is arranged pivoted with respect to the opening area relative to a perpendicular perpendicular to the opening area.
  • the suction strength or the flow profile in the suction box or in the opening area can be influenced in a simple manner, so that the amount of material sucked in can be influenced. For example, by tilting the connection opening inwards, the flow in the radially outer area of the suction box can be increased in order to be able to better suck off the larger amount of material that occurs there.
  • the suction box has at least one nozzle in the interior. In this way, the movement of the loosened soil / rock for gripping by the conveying medium can be improved in a simple manner.
  • the delivery medium and / or the transport medium is a liquid or gaseous medium, preferably water, a bentonite suspension or air.
  • the conveying medium is air and the transport medium is air or a liquid, preferably water. This is used when the drill head is / should not / cannot be flooded and therefore liquid-based production is ruled out. It has been shown, surprisingly, that the loosened soil / rock can be easily transported / activated by the emitted jet and can advantageously be fed into and removed from the conveying flow of air.
  • a further teaching of the invention provides that the at least one element is at least one driven rotary element with at least one striking element arranged thereon, the at least one striking element causing the loosened soil to accelerate via a contact through a rotational movement.
  • the striking element can be moved on a striking circle which is provided concentrically around the rotating element.
  • the at least one impact element is movably arranged on the at least one rotation element, preferably via a joint.
  • the at least one striking element is a hammer, a sword, a rope, a chain, a brush element, or a chisel.
  • a further teaching of the invention provides that the rotation of the at least one rotation element can be speed-regulated.
  • Another teaching of the invention provides that the at least one impact element causes the loosened soil to be comminuted.
  • the suction box is provided horizontally, inclined and / or vertically.
  • the object according to the invention is also achieved by a method for creating a substantially vertical bore in the ground, in particular for creating a shaft, with a drill head, in particular with a drill head described above, the drill head being connected to a rotary drive of a drilling device, the drill head has a body on which drilling tools are arranged, with which the soil on a face of the borehole is loosened during drilling and comminuted to a size that can be conveyed away, the loosened and comminuted soil being transported away from the face with a conveying device which is connected to a suction unit for Suction of a conveying medium is connected via a conveying line, the discharge device having a suction box with an opening area with at least one opening in the area of the drilling tools on the face, with the steps:
  • Another teaching of the invention provides that the loosened soil is moved through the opening in the suction box by the acceleration introduced.
  • Another teaching of the invention provides that the detection takes place in the suction box and / or in the opening area, preferably in front of the opening.
  • Another teaching of the invention provides that the acceleration takes place by emitting a jet of a transport medium from a nozzle which is directed into the opening area of the suction box as part of the conveying device.
  • Another teaching of the invention provides that the loosened soil is moved by the transport medium.
  • the acceleration takes place by at least one driven rotary element with at least one striking element arranged thereon, the at least one striking element causing the loosened soil to accelerate via a contact through a rotational movement.
  • the loosened soil is moved by the striking element. It is advantageous here, as described above, that the conveying medium and / or the transport medium is a liquid or gaseous medium, preferably water, a bentonite suspension or air
  • Figure 1 is a three-dimensional view of the underside of the drill head according to the invention of the first
  • FIG. 2 shows a schematic detail sketch of FIG. 1 of a first embodiment of FIG
  • Figure 3 is a schematic partial sectional view in plan view of Figure 2
  • FIG. 4 shows a schematic representation of alternative drill head shapes according to the invention
  • FIG. 5 shows a schematic spatial partial view of FIG. 1
  • FIG. 6 shows a further schematic spatial partially sectioned partial view of FIG. 1,
  • FIG. 7 shows a further schematic spatial partially sectioned partial view of FIG. 1,
  • FIG. 8 shows a first schematic diagram with regard to the removal according to the invention in
  • FIG. 9 shows a second schematic diagram with regard to the conveyance according to the invention.
  • Figure 10 is a schematic side view of a first arrangement of a suction box in a drill head according to the invention
  • Figure 11 is a schematic side view of a second arrangement of a suction box in a drill head according to the invention.
  • FIG. 12 a partial sectional view of FIG. 11,
  • FIG. 13 shows a schematic side view of a preparation in a drilling device with a drilling head according to the invention
  • FIG. 14 is a sectional view of a second embodiment of the invention.
  • FIG. 15 shows a sectional view of FIG. 14 rotated by 90 °
  • FIG. 16 alternative drill head profiles to FIG. 14.
  • Figure 1 shows a three-dimensional representation of a drill head 10 according to the invention in a first embodiment.
  • the drill head 10 has a body 11 on which on its underside 13 Drilling tools 12 are arranged.
  • the drill head 10 On its upper side 14, the drill head 10 has a connection (not shown) for a drive (not shown) of a drilling device (not shown).
  • the drive is for example provided directly in the drilling device, for example a shaft drilling machine. Further variants of drives, drilling devices and arrangements, for example in a borehole / pile / casing, are also possible.
  • the underside 13 has a, for example, planar (other shapes are possible) ring section 15, on which the underside 16 of which drilling tools 12 are provided.
  • arms here for example 8 arms 17, extend outward, each of which has a here, for example, planar flank 18.
  • Broaching tools 19 and wear elements 40 can be provided on the flanks.
  • the flanks 18 can also be designed around the entire surface.
  • a recess 41 is provided here, for example, which has, for example, a flat surface 42 and flanks 43, on which drilling tools 12 are also provided.
  • the shape of the drill head described here is also referred to as a W drill head.
  • the drilling profile for this is shown in FIGS. 8 and 9.
  • the width of the planar ring section 15 and the angles of the inner and outer flanks 43, 18 and the size of the inner surface 42 are variable and depend on the degradation conditions, as is also shown in FIG.
  • the drilling tools 12 can be, for example, disc chisels 12a, paring chisels or paring knives 12b or roller chisels 12c or other alternatives. The selection of the drilling tools 12 takes place depending on the soil / rock to be loosened for creating the bore.
  • connection 45 of the delivery line 31 is shown in FIG.
  • the body 11 has a suction box 20 on its underside 13 of the W drill head 10 on the ring section 15.
  • FIG. 1 Alternative arrangements of the suction box 20 are shown in FIG.
  • the suction box 20 sits in the deepest part of the borehole (left in FIG. 4) or extends and is provided radially in a flat manner executed drill head (right in Figure 4).
  • a W drill head is shown in the middle of FIG. 4, a W drill head is shown.
  • the suction box 20 is inclined or vertical and, for example, its opening 23 is directed downwards towards the face 100.
  • the suction box 20 in a first embodiment has an opening area 22 on its front side 21, which has at least one opening 23.
  • the opening 23 of the first embodiment of the suction box 20 has a classification element 24 which divides the opening 23 into opening sections 23a.
  • the classifying element 24 determines the grain size of the loosened soil / rock that can enter the interior 25 of the suction box 20.
  • the interior 25 is formed by a cover 26 as the top and a bottom 27 as the bottom, which are designed here as an embodiment plan. Other forms of lid and base are also possible. Furthermore, the suction box 20 has side walls 28 which here extend from the front 21 along the shape of the cover and the base.
  • a box-like structure can be present here.
  • a funnel can be present if the width of the interior space 25 is reduced, for example by a curved shape of the side walls 28, as a result of which the flow velocity of the announced mixture of dissolved soil / rock and carrier medium increases with decreasing width.
  • an opening 29 is provided, at which a connection 30 is provided for a conveying capacity 31, which is connected to a suction unit / pump (not shown) in the drilling operation in order to remove the loosened soil / rock or the Carry out a mixture of the conveying medium and dissolved soil / rock.
  • the height of the interior 25 of the suction box 20 can also be varied, in particular increased, starting from the front 21 towards the opening 29 on the rear of the suction box 20 in order to counteract blockages of the interior 25 by loosened soil / rock.
  • the suction box 20, shown here symmetrically, asymmetrically, for example by arranging the opening 29 laterally offset (not shown). It can be particularly useful here, for example in the case of a flat executed drill head, if the extension of the opening area 22 is made longer, the opening 29 to be offset towards the outer circumference of the body 11 in order in the areas in which more soil / rock is loosened during the rotation of the drill head and through the opening 23 in the interior 25 of the suction box 20 enters to increase the flow rate in a targeted manner.
  • connection 30 of the conveying capacity 31 opens in an inclined manner while collapsing into the interior space 25.
  • the opening area 22 can have soil loosening tools and / or soil receiving tools 33, for example paring knives or scrapers, in the area of the opening 23 which extends along the front side 21.
  • soil loosening tools and / or soil receiving tools 33 for example paring knives or scrapers, in the area of the opening 23 which extends along the front side 21.
  • guide plates can also be provided on the underside 13 of the drill head 10 (not shown), which guide the released material to the opening area 22.
  • the feeding can be supported by nozzles such as, for example, flushing nozzles 32.
  • FIG. 2 and FIG. 3 show a section of the drill head 10 according to the invention with a suction box 20 with an opening 23 and nozzles 34 directed thereon for dispensing a transport medium 80, preferably air or a liquid such as water or bentonite mud.
  • the conveying medium 90 is sucked in through the conveying line 31, which is connected to the suction box 20 via the opening 29 and the connection 30.
  • Loosened soil 110 is accelerated by the transport medium jet 81 and transported through the opening 23. There, the loosened soil 110 is captured by the conveying medium 90.
  • Loosened soil 110, conveying medium 90 and transport medium 80 mix to form a conveying flow 120, which is then conveyed away via the conveying line.
  • the transport medium jet 81 causes a turbulence or detachment of the loosened soil 110 from the face 100 in the opening area 22 through the acceleration input, so that the loosened soil is already captured there by the conveying medium 90 and transported away with the conveying medium as a conveying flow 120 becomes.
  • FIG. 5 shows an arm 17 of the drill head 10 in W-shape according to FIG. 1 with drilling tools 12 arranged thereon as disks 12a and with chisels on the lateral flanks 18 and on the flanks 43 on the underside 13.
  • the drilling tools 12 arranged on the arms 17 can be exchanged from the interior of the arm 17.
  • FIG. 6 shows an arm 17 of the drill head 10 in W-shape according to FIG. 1 with a suction box 20 and a delivery line 31 connected to it, which are provided within the arm 17.
  • a suction box 20 and a delivery line 31 connected to it, which are provided within the arm 17.
  • no drilling tools 12, 12a are shown in FIG.
  • flushing nozzles 32 are provided, which are aligned in the direction of the opening 23 of the suction box 20.
  • the same medium as the transport medium can preferably be used as the rinsing medium.
  • the mud jet 130 With the mud jet 130, the loosened cuttings 1 1 is transported into the opening area 22 or towards the deepest point 140 of the borehole. In this area, the loosened soil 110 is then fed from the nozzles 34 to the opening 23 of the cistern 20, as shown in FIG. 7.
  • FIGS. 8 and 9 The sequence of soil loosening and removal of the loosened soil is shown in FIGS. 8 and 9, for example in connection with a drill head 10 according to FIG.
  • the soil is loosened with drilling tools 12 and is located in the area of the respective drilling tools.
  • flushing nozzles 32 are provided in the area of the respective drilling tools 12. These emit a mud jet 130 which washes the loosened soil 110 into the area of the deepest part of the borehole 140. In this area the suction box 20 is moved with its opening 23.
  • the transport medium jet 81 is then emitted in the opening area 23, with which the loosened soil is accelerated into the opening 22 and thus moved to the cistern 20 for removal, and V or in the opening area 22 is sucked directly through the suction box 20 becomes.
  • the movement / acceleration of the cuttings into the suction box 20 can additionally be supported by mechanical tools.
  • FIG. 10 shows the introduction of loosened soil into the suction box, the opening 29 or connection 30 of which to the conveying line 31 is provided behind the opening area 22. Shown is mechanical support during the pick-up by means of a pick-up tool 33.
  • the suction box 20 can be pivoted about a pivot point 36 via a cylinder 35.
  • the nozzles 34 are not shown here.
  • FIGS. 11 and 12 the introduction of loosened soil into the suction box 20 is shown, the opening 29 or connection 30 of which to the conveying line 31 is provided in front of the opening area 22. What is shown is mechanical support during the pick-up by means of a pick-up tool 33.
  • the suction box 20 can pivot about a pivot point 36 via a cylinder 35 will.
  • the suction box can thus be given away in the direction of arrow A, so that the distance 36 from the face 100 changes.
  • the arrangement of the nozzles 34 is shown in FIG.
  • a first nozzle 34 is provided here, which is directed in the direction of the deflecting or receiving tool 33.
  • a second nozzle 34 ′ is provided, which is directed in the direction of the opening 29 and the connection 30.
  • the loosened soil 110 is fed to the conveying medium 120 through the two nozzles 34, 34 'and conveyed away together with it.
  • the conveyed flow conveyed away via the conveying line 31 is composed of a combination of solid components (dissolved soil 110) and liquid and / or gaseous components. These are fed to a preparation 200 via the delivery line 31 (see FIG. 13). Here the components are separated from one another, for example by means of at least one cyclone, liquid and / or dust separator.
  • the gaseous components are fed back into the drilling area (for example the shaft that has already been drilled). If necessary, the liquid constituents are fed back to the nozzles 32, 34, 34 'or conveyed away from the drilling area to the surface.
  • the solid components are also removed from the drilling area above ground using suitable means.
  • FIGS. 14-16 shows a mechanical acceleration entry.
  • a striking device 50 is provided, which is provided in the area of the suction box 20 towards the inside in the drill head 10 but can accelerate the loosened soil 110 in the area of the face 100.
  • a rotation element 51 is provided in a housing 57, on which a plurality of striking elements 52 are arranged around the circumference, here preferably provided movably via a joint 53.
  • the striking elements 52 move on a striking circle 54 provided concentrically around the rotating element 51.
  • the rotating element 51 is driven via a drive (not shown). Striking elements 52 hit loosened soil in a striking area 55, which is then introduced in the striking direction 56 into the suction box 20 or into its opening 23. In the interior space 25 there and / or in the opening area 22, the accelerated, loosened soil is then captured by the conveying medium 90 and conveyed away through the conveying line 31 with the conveying flow 120.
  • FIG. 15 and FIG. 16 show different arrangement widths of the striking device 50 in connection with the flanks 18, 43 of the drill head 10. It is advantageous here to make the striking device 50 as wide as possible (FIG. 16, bottom) in order to achieve a better conveying performance.
  • flanks 18, 43 as shown in FIG. 16 at the top, can be made relatively steep and short compared to the representations in FIG. 15 and FIG. 16 below, so that under certain circumstances even flank flushing, here in the form of a Air flow or in the form of clearing elements (not shown) can be omitted.

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

Abstract

L'invention concerne une tête de forage et un procédé pour réaliser un forage sensiblement vertical dans le sol, en particulier pour créer un puits, comprenant un corps (11) qui peut être relié à un mécanisme d'entraînement rotatif d'un dispositif de forage, comprenant des outils de forage (12) disposés sur le corps (11) pour ameublir le sol au niveau d'un front de taille (100) du forage, comprenant un dispositif d'enlèvement destiné à évacuer le sol ameubli au niveau du front de taille (100), lequel peut être relié à une unité d'aspiration pour aspirer un fluide de transport (90) par le biais d'une conduite de transport (31), le dispositif d'enlèvement possédant une zone d'ouverture (22) qui est disposée au niveau du corps (11) et comporte au moins une ouverture (23) dans la zone des outils de forage (12) au niveau de la face de taille. Selon l'invention : ladite ouverture (23) de la zone d'ouverture (22) est reliée à un caisson d'aspiration (20) qui est un élément constitutif du dispositif d'enlèvement et qui possède, à une extrémité opposée à l'ouverture (23), une ouverture de raccordement (29) pour un raccordement à la conduite de transport (31) ; et au moins un élément est présent, lequel exerce sur le sol ameubli dans la zone du caisson d'aspiration une accélération par laquelle le sol ameubli par les outils de forage (12) peut être déplacé dans la zone d'ouverture (22) et/ou à travers l'ouverture (23) dans le caisson d'aspiration (25). Le sol ameubli (110) est capturé par le fluide de transport (90) dans l'ouverture (23) et/ou dans le caisson d'aspiration (25) et peut être évacué par l'unité d'aspiration par le biais de la conduite de transport (31).
EP20746138.5A 2019-07-24 2020-07-21 Tête de forage et procédé pour la réalisation d'un forage vertical dans le sol Active EP4004331B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP24165434.2A EP4411105A3 (fr) 2019-07-24 2020-07-21 Tête de forage et procédé pour la réalisation d'un forage vertical dans le sol

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201962878264P 2019-07-24 2019-07-24
PCT/EP2020/070579 WO2021013846A2 (fr) 2019-07-24 2020-07-21 Tête de forage et procédé pour la réalisation d'un forage vertical dans le sol

Related Child Applications (1)

Application Number Title Priority Date Filing Date
EP24165434.2A Division EP4411105A3 (fr) 2019-07-24 2020-07-21 Tête de forage et procédé pour la réalisation d'un forage vertical dans le sol

Publications (3)

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EP4004331A2 true EP4004331A2 (fr) 2022-06-01
EP4004331C0 EP4004331C0 (fr) 2024-03-27
EP4004331B1 EP4004331B1 (fr) 2024-03-27

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EP24165434.2A Pending EP4411105A3 (fr) 2019-07-24 2020-07-21 Tête de forage et procédé pour la réalisation d'un forage vertical dans le sol
EP20746138.5A Active EP4004331B1 (fr) 2019-07-24 2020-07-21 Tête de forage et procédé pour la réalisation d'un forage vertical dans le sol

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EP24165434.2A Pending EP4411105A3 (fr) 2019-07-24 2020-07-21 Tête de forage et procédé pour la réalisation d'un forage vertical dans le sol

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US (1) US12031385B2 (fr)
EP (2) EP4411105A3 (fr)
CN (1) CN114514359B (fr)
AU (1) AU2020316928A1 (fr)
CA (1) CA3148224C (fr)
ES (1) ES2986095T3 (fr)
PL (1) PL4004331T3 (fr)
WO (1) WO2021013846A2 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4399368A4 (fr) * 2021-09-10 2025-07-30 Optima Mining Systems Pty Ltd Ensemble tête de coupe

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Also Published As

Publication number Publication date
AU2020316928A1 (en) 2022-02-24
PL4004331T3 (pl) 2024-07-22
WO2021013846A2 (fr) 2021-01-28
CA3148224C (fr) 2024-01-23
EP4004331C0 (fr) 2024-03-27
US12031385B2 (en) 2024-07-09
CA3148224A1 (fr) 2021-01-28
CN114514359A (zh) 2022-05-17
EP4411105A3 (fr) 2025-01-22
ES2986095T3 (es) 2024-11-08
CN114514359B (zh) 2025-03-21
US20230147209A1 (en) 2023-05-11
EP4004331B1 (fr) 2024-03-27
EP4411105A2 (fr) 2024-08-07
WO2021013846A3 (fr) 2021-04-08

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