EP2740882B1 - Dispositif de forage et procédé de création d'un trou de forage - Google Patents

Dispositif de forage et procédé de création d'un trou de forage Download PDF

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Publication number
EP2740882B1
EP2740882B1 EP12008107.0A EP12008107A EP2740882B1 EP 2740882 B1 EP2740882 B1 EP 2740882B1 EP 12008107 A EP12008107 A EP 12008107A EP 2740882 B1 EP2740882 B1 EP 2740882B1
Authority
EP
European Patent Office
Prior art keywords
container
drilling
drill
drilling device
flight
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.)
Active
Application number
EP12008107.0A
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German (de)
English (en)
Other versions
EP2740882A1 (fr
Inventor
Andreas Stimpfle-Ziegler
Manfred Schweiger
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.)
Bauer Maschinen GmbH
Original Assignee
Bauer Maschinen 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 Bauer Maschinen GmbH filed Critical Bauer Maschinen GmbH
Priority to EP12008107.0A priority Critical patent/EP2740882B1/fr
Priority to US14/094,486 priority patent/US9376880B2/en
Publication of EP2740882A1 publication Critical patent/EP2740882A1/fr
Application granted granted Critical
Publication of EP2740882B1 publication Critical patent/EP2740882B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • E21B27/00—Containers for collecting or depositing substances in boreholes or wells, e.g. bailers, baskets or buckets for collecting mud or sand; Drill bits with means for collecting substances, e.g. valve drill bits
    • E21B27/04—Containers for collecting or depositing substances in boreholes or wells, e.g. bailers, baskets or buckets for collecting mud or sand; Drill bits with means for collecting substances, e.g. valve drill bits where the collecting or depositing means include helical conveying 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
    • E21B10/00—Drill bits
    • E21B10/44—Bits with helical conveying portion, e.g. screw type bits; Augers with leading portion or with detachable parts
    • 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
    • E21B3/00—Rotary drilling
    • 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
    • E21B7/00—Special methods or apparatus for drilling
    • E21B7/003—Drilling with mechanical conveying means
    • E21B7/005—Drilling with mechanical conveying means with helical conveying means
    • E21B7/006—Drilling with mechanical conveying means with helical conveying means combined with a bucket-type container

Definitions

  • the invention relates to a drilling apparatus according to the preamble of claim 1 and to a method for creating a borehole in the ground according to claim 11.
  • the drilling apparatus comprises a rotationally driven drilling tool for removing soil material and a container for receiving the removed soil material.
  • the container has a lower feed opening, through which the removed soil material can be introduced into the container.
  • box drills are not suitable for drilling hard rock or rock, since known drilling tools for hard rock or rock do not ensure reliable conveyance of the soil material into the container. It has therefore hitherto been necessary to first use a separate drilling tool for drilling hard rock, with which, for example, an existing rock layer can be torn open. Subsequently, after a tool change, the dissolved material is conveyed by means of the container. It is therefore always a tool change necessary to first dissolve the material and then to promote with the container or bucket from the borehole out.
  • progressive screws are known for drilling hard rock. These have a drilling screw tapering in the direction of drilling, on which a plurality of drill teeth is arranged. To loosen hard rock, progressive screws have a comparatively small spiral pitch.
  • a combination of box drill and progressive screw could not be implemented so far due to the flat spiral pitch and the resulting problems with respect to the opening on the container.
  • a drilling device with a container for receiving removed soil material is for example in the DE 102 19 757 C1 described. More box drills go out of the EP 1 640 507 A1 or the EP 0 628 700 A2 out.
  • DE 20 2004 004 799 U1 describes a worm drill with a drilling helix that tapers in the direction of drilling. Another progressive auger is in DE 296 12 342 U1 described.
  • the invention has for its object to provide a drilling apparatus and a method for creating a borehole in the ground, which, particularly in hard soils, allow a particularly economical creation of the borehole.
  • the object is achieved by a drilling device with the features of claim 1 and a method having the features of claim 11.
  • the above-mentioned drilling device further developed in that the drilling tool has at least one below the container arranged drill spiral with Abtragswerkmaschineen, in particular drill teeth, and that in an inlet region to the container between the drill coil and the feed opening an inlet section is provided, the slope relative to a slope of Drill is increased.
  • the method for creating a borehole is performed with a boring device according to the invention.
  • a first basic idea of the invention consists in the combination of a box drill, that is to say a drilling device with a container for receiving the removed soil material, and a drill spiral arranged below the container for removing the soil material.
  • the combination of auger and container or drilling bucket is inventively made possible by the fact that between the drill helix, which usually has a flat spiral pitch, and the feed opening of the container, a helical section is provided with an enlarged pitch relative to the drill helix. Due to this steep transition between the helix and the container, the dissolved soil material can be reliably transported into the drilling bucket despite the small pitch of the helix.
  • the axial distance between the uppermost (possibly single) turn of the drill spiral and the bottom of the drill bucket is increased by the inlet slope. This reduces the risk of collision of larger rocks with the bottom of the drilling bucket and thus clogging of the feed opening.
  • the size of the supply opening of the container bottom can be limited to a reasonable degree.
  • the drilling device according to the invention is particularly suitable for diameters of one meter or more.
  • the drilling helix is tapered in the drilling direction and that removal tools are arranged on an outer edge.
  • a drill spiral which can also be referred to as a progressive screw, is particularly suitable for the removal of hard rock.
  • a progressive screw comprises a drill spiral which widened counter to the direction of drilling or tapers in the direction of drilling and is equipped with a plurality of drilling tools in the form of drill teeth or drill bits.
  • the drill spiral has a spiral-shaped outer edge. Due to the tapered drill spiral, the outer edge forms in particular a conical space spiral.
  • the combination of drilling helix and receiving container for the removed material makes it possible to realize a particularly economical drilling method, in particular in the case of hard rock.
  • the hard soil material is loosened by means of the particularly suitable progressive screw and conveyed over the drill spiral upwards, in the direction of the container.
  • the material in particular discontinuously, can be conveyed upwards out of the borehole.
  • the drill helix is designed as a multiple helix, in particular as a double helix, and that two or more feed openings are formed on the container accordingly.
  • the use of two or more Bohrwendelblechen or a Mehrfachhelix allows automatic centering of the drilling tool in the borehole.
  • a simple emptying of the container outside the borehole can be achieved in that the drilling helix is fastened to a container base that is pivotably or rotatably hinged to the container.
  • the drill spiral can thus be pivoted together with the container bottom, so that the cuttings received in the container can fall out freely.
  • An improved centering of the drilling tool in the borehole can be achieved by providing one of the boring helix in the drilling direction leading centering shaft, which comprises at least one front-side removal tool.
  • the centering shaft may comprise a shaft body around which a helical groove and / or a helix extends.
  • the particular cylindrical centering extends preferably in the axial extension of a support shaft, around which the drill spiral is arranged, and preferably has a length which corresponds to at least 20%, more preferably at least 30% of the axial length of the holding shaft of the drill.
  • At least one removal tool in particular a drill tooth or chisel, is arranged on a lower end face of the centering shaft.
  • a plurality of removal tools are placed eccentrically on the end face of the centering shaft and obliquely set in the direction of rotation of the centering shaft.
  • the removal tools on the drill helix are preferably arranged radially in front of the outer edge of the drill helix.
  • the Abtragswerkmaschinee which may be executed in particular as a drill teeth or chisel, obliquely against the drilling direction and show with their drill bit chisel tip obliquely in the direction of rotation of the drill.
  • the drilling helix is preferably non-rotatably connected to the container and rotatably drivable together with the container.
  • a holding shank is preferably attached to the container bottom, on the outer circumference of which the drilling helix is arranged.
  • a connection device for connecting a drill pipe is preferably provided.
  • the container is rotationally driven by means of the drill string.
  • About the container with this rotatably connected drill spiral is also driven.
  • the feed opening of the container is closable.
  • a sliding closure can be provided, which is movable transversely to the drilling direction and by means of which the feed opening can be closed.
  • the bottom of the container preferably comprises a base member pivotally hinged about an axis transverse to the drilling direction on the container body and a sliding shutter which is movable parallel to the base member to open and close the feed opening in the bottom of the container.
  • the sliding closure is rotatably mounted about a central axis of the container, which preferably represents the drilling axis.
  • the opening and closing of the sliding closure can be realized with a suitable drive mechanism.
  • a particularly good stability of the device is achieved in that the inlet section is supported in the inlet region to the container via at least one support plate. Due to the increased slope of the inlet section compared to the underlying drill spiral, the inlet region is subjected to comparatively large forces. To derive this effectively, one or more support plates are arranged in the rear region of the inlet section or below the inlet section, which derive the forces. The support plates preferably extend transverse to a conveying surface of the inlet section and are based on the one hand on the inlet section and on the other hand on the container bottom.
  • a drilling device 10 is in the Figures 1 and 2 shown.
  • the drilling apparatus 10 includes a container 20 for receiving removed or dissolved soil material.
  • a drilling tool 40 is arranged, which can also be referred to as a progressive screw.
  • the drilling tool 40 comprises a central holding shaft 42, which extends centrally below the container 20 in the drilling direction.
  • To the holding shaft 42 are two Bohrwendelbleche 47 arranged as a double helix Bohrchtl 46 arranged. In principle, however, only one Bohrchtlblech 47 may be provided, or it can be arranged more than two Bohrchtlbleche 47.
  • the drilling helixes 46 or bore helix plates 47 taper radially in the drilling direction, that is to say the radial extent decreases in the direction of drilling.
  • removal tools 50 are arranged in the form of drill teeth, which are designed for dissolving soil material, in particular of rock or rock.
  • Ground material is released by means of the drilling teeth arranged along the drilling helix 46.
  • the dissolved soil material is conveyed via the drilling helix 46, which has a first pitch, in the direction of the container 20.
  • the container 20 comprises a container bottom 22, in which a feed opening 24 is formed, via which the dissolved soil material can be introduced into the container 20.
  • the feed opening 24 can be closed with a sliding closure 26.
  • the drilling tool 40 with its drilling helix 46 and the drill teeth or chisels attached thereto is designed in particular for rock or rock and accordingly has a slope suitable for this purpose.
  • an inlet section 52 is provided above the boring spiral 46, which has a greater pitch than the boring spiral 46.
  • the inlet section 52 extends exclusively below the feed opening 24 of the container bottom 22. It forms a conveyor section for conveying the removed soil material from the drilling helix 46 to the feed opening 24 and in particular has a constant, compared to the drill helix 46 increased pitch.
  • the inlet section 52 comprises an inlet plate 53 between the drill spiral 46 and the container bottom 22, in particular between an upper end region of the drill spiral 46 and an inlet edge of the container bottom 22 at the edge of the feed opening 24.
  • the inlet plate 53 is supported on its lower or rear side by one or more support plates 56.
  • the support plates 56 divert the forces acting on the inlet plate 53 into the container bottom 22.
  • the container bottom 22 is pivotably mounted on a container base body, in particular on a cylinder wall 30 of the container 20.
  • the container bottom 22 can be pivoted out of the drilling axis together with the drilling tool 40, so that the container 20 can be emptied outside the borehole.
  • connection device 36 At an upper end of the container 20, a connection device 36 is provided, to which a drill pipe for rotating the container 20 and / or for applying an axial feed force can be connected.
  • the connection device 36 can in particular be designed as a so-called Kellybox.
  • FIGS. 3 and 4 show the container bottom 22 with the firmly attached drilling tool 40 detached from the container body.
  • the drilling tool 40 below the drilling helix 46 comprises a centering shaft 60, which extends in extension of the holding shank 42 and can in principle be formed integrally therewith.
  • a shaft main body 62 conveying spirals 66 with a radial depth of a few millimeters or centimeters.
  • helices 62 helical grooves 64 are formed through which soil material is conveyed upwards. This facilitates the screwing of the centering shaft 60 in the ground.
  • the helices 66 have a constant radius along the shaft main body 62.
  • On one underside of the shaft main body 62 are one or more removal tools 68, which may be designed in particular for the removal of hard rock and may be referred to as pilots.
  • Fig. 4 It can be seen that the removal tools 50 or drill teeth when viewed from the drilling tool 40 extend from below along the drill spiral 46 or the respective Bohrwendelbleches 47 approximately along an involute or a logarithmic or a hyperbolic spiral. Each Bohrwendelblech 47 passes less than one revolution, in particular about half a turn. At the inlet section 52, the drilling helix 46 reaches the diameter of the container 20. The inlet section 52 is designed without removal tools.
  • the container 20 has one or more feed openings 24.
  • the feed openings 24 extend axially above a portion of the drill coils 46 and above the inlet section 52.
  • a baffle 54 may be disposed to reliably convey the soil material into the container 20.
  • the baffle 54 may be provided with a crushing edge 55, which may in particular extend obliquely downwards.

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (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)
  • Mechanical Engineering (AREA)
  • Earth Drilling (AREA)

Claims (11)

  1. Dispositif de forage pour la création d'un trou de forage dans le sol, avec :
    - un outil de forage (40) entraîné en rotation pour l'enlèvement du matériau de sol, et
    - un conteneur (20) pour la réception du matériau de sol enlevé,
    - dans lequel le conteneur (20) comprend une ouverture d'admission (24) inférieure, par laquelle le matériau de sol enlevé peut être introduit dans le conteneur (20), et
    - l'outil de forage (40) comprend au moins une hélice de forage (46) munie d'outils d'enlèvement (50) et disposée au-dessous du conteneur (20),
    caractérisé :
    - en ce que, dans une zone d'entrée du conteneur, entre l'hélice de forage (46) et l'ouverture d'admission (24), une section d'entrée (52) est prévue, dont la pente est augmentée par rapport à un pas de l'hélice de forage (46).
  2. Dispositif de forage selon la revendication 1,
    caractérisé :
    en ce que l'hélice de forage (46) est réalisée sous la forme d'une hélice multiple, plus particulièrement sous la forme d'une double hélice, et
    en ce que, de manière correspondante, deux ou plusieurs ouvertures d'admission (24) sont formées sur le conteneur (20).
  3. Dispositif de forage selon la revendication 1 ou 2,
    caractérisé :
    en ce que l'hélice de forage (46) a une structure qui va en se rétrécissant dans la direction du forage, et
    en ce que des outils d'enlèvement (50) sont disposés sur une arête extérieure (48).
  4. Dispositif de forage selon l'une des revendications 1 à 3,
    caractérisé :
    en ce que l'hélice de forage (46) est fixée sur un fond de conteneur (22) articulé en pouvant pivoter par rapport au conteneur (20).
  5. Dispositif de forage selon l'une des revendications 1 à 4,
    caractérisé :
    en ce qu'il est prévu, en avant de l'hélice de forage (46) dans la direction du forage, une tige de centrage (60), qui comprend un outil d'enlèvement (68) frontal et au moins une rainure (64), de forme hélicoïdale et s'étendant autour d'un corps de base de la tige, et/ou une hélice de transport (66).
  6. Dispositif de forage selon l'une des revendications 1 à 5,
    caractérisé :
    en ce que les outils d'enlèvement (50) sont en saillie de manière radiale par rapport à l'arête extérieure (48) de l'hélice de forage (46).
  7. Dispositif de forage selon l'une des revendications 1 à 6,
    caractérisé :
    en ce que l'hélice de forage (46) est reliée au conteneur (20) de façon solidaire en rotation et peut être entraînée en rotation conjointement avec le conteneur (20).
  8. Dispositif de forage selon l'une des revendications 1 à 7,
    caractérisé :
    en ce qu'un dispositif de liaison (36) est prévu à une extrémité supérieure du conteneur (20) pour le raccordement d'une tige de forage.
  9. Dispositif de forage selon l'une des revendications 1 à 8,
    caractérisé :
    en ce que l'ouverture d'admission (24) du conteneur (20) peut être refermée.
  10. Dispositif de forage selon l'une des revendications 1 à 9,
    caractérisé :
    en ce que, dans la zone d'entrée du conteneur (20), la section d'entrée (52) est supportée par l'intermédiaire d'au moins une plaque de support (56).
  11. Procédé de création d'un trou de forage dans le sol au moyen d'un dispositif de forage (10) selon l'une des revendications 1 à 10.
EP12008107.0A 2012-12-04 2012-12-04 Dispositif de forage et procédé de création d'un trou de forage Active EP2740882B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP12008107.0A EP2740882B1 (fr) 2012-12-04 2012-12-04 Dispositif de forage et procédé de création d'un trou de forage
US14/094,486 US9376880B2 (en) 2012-12-04 2013-12-02 Drilling device and method for producing a borehole

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP12008107.0A EP2740882B1 (fr) 2012-12-04 2012-12-04 Dispositif de forage et procédé de création d'un trou de forage

Publications (2)

Publication Number Publication Date
EP2740882A1 EP2740882A1 (fr) 2014-06-11
EP2740882B1 true EP2740882B1 (fr) 2016-09-21

Family

ID=47294643

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12008107.0A Active EP2740882B1 (fr) 2012-12-04 2012-12-04 Dispositif de forage et procédé de création d'un trou de forage

Country Status (2)

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US (1) US9376880B2 (fr)
EP (1) EP2740882B1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013000771A1 (de) * 2013-01-18 2014-07-24 Herrenknecht Ag Vorrichtung zum Abfördern von Bohrklein
JP5994015B1 (ja) * 2015-12-03 2016-09-21 株式会社オーク ダウンザホールハンマー用ビット
EP3190257B1 (fr) * 2016-01-08 2018-04-25 BAUER Spezialtiefbau GmbH Dispositif de forage et procede de fabrication d'un pieu fore dans le sol
CN106677733A (zh) * 2017-01-18 2017-05-17 深圳市建设（集团）有限公司 一种带钻渣打捞装置的大直径钻孔钻头
CN109138885A (zh) * 2018-10-26 2019-01-04 杨娅琼 一种卸土钻斗装置
DE102019108806A1 (de) * 2019-04-04 2020-10-08 Bauer Maschinen Gmbh Bohreimer und verfahren zum herstellen einer bohrung im boden
CN112267839A (zh) * 2020-11-13 2021-01-26 中铁四局集团建筑工程有限公司 一种旋挖钻机用钻头

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Also Published As

Publication number Publication date
EP2740882A1 (fr) 2014-06-11
US9376880B2 (en) 2016-06-28
US20140151126A1 (en) 2014-06-05

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