WO2021156049A1 - Foret de fond de trou et procédé pour créer un trou de forage - Google Patents

Foret de fond de trou et procédé pour créer un trou de forage Download PDF

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Publication number
WO2021156049A1
WO2021156049A1 PCT/EP2021/051043 EP2021051043W WO2021156049A1 WO 2021156049 A1 WO2021156049 A1 WO 2021156049A1 EP 2021051043 W EP2021051043 W EP 2021051043W WO 2021156049 A1 WO2021156049 A1 WO 2021156049A1
Authority
WO
WIPO (PCT)
Prior art keywords
drill head
frame section
drilling device
drilling
hole
Prior art date
Application number
PCT/EP2021/051043
Other languages
German (de)
English (en)
Inventor
Stefan Michael Finkenzeller
Jürgen Klippenstein
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
Publication of WO2021156049A1 publication Critical patent/WO2021156049A1/fr

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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
    • E21B4/00—Drives for drilling, used in the borehole
    • E21B4/18—Anchoring or feeding in the borehole
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D7/00—Methods or apparatus for placing sheet pile bulkheads, piles, mouldpipes, or other moulds
    • E02D7/28—Placing of hollow pipes or mould pipes by means arranged inside the piles or pipes
    • 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
    • E21B7/20—Driving or forcing casings or pipes into boreholes, e.g. sinking; Simultaneously drilling and casing boreholes
    • E21B7/208—Driving or forcing casings or pipes into boreholes, e.g. sinking; Simultaneously drilling and casing boreholes using down-hole drives

Definitions

  • the invention relates to a down-the-hole drilling device for creating a hole in the ground, with a drill head for removing soil material, a drill string, at the un terem end of which the drill head is attached, a rotary drive device for rotating the drive of the drill string with the drill head, a bracing device, which is arranged on a first frame section and designed for radial bracing of the in-hole drilling device radially to the borehole wall, and at least one adjusting cylinder for adjusting the drill head in an axial direction, according to the preamble of claim 1.
  • the invention also relates to a method for creating a bore in the ground, in which, to form the bore, soil material is removed by means of a drill head which is attached to a lower end of a drill string which is rotatably driven by means of a rotary drive device, a first frame section of the downhole drilling device is braced radially to a borehole wall by means of a bracing device, and the drill head is adjusted in an axial direction by means of at least one adjusting cylinder, according to the preamble of claim 12.
  • Down-the-hole drilling devices are used in particular when drilling holes in the ground with a larger drilling diameter, which can typically be 1 meter to several meters.
  • the downhole drilling device has a drill head which is set in rotation by means of a rotary drive, which directly is arranged on the frame of the downhole drilling device and is thus located in the borehole itself.
  • a rotary drive which directly is arranged on the frame of the downhole drilling device and is thus located in the borehole itself.
  • Stellzy cylinders are also arranged for axial displacement of the drill head.
  • the frame of the down-the-hole drilling device is clamped by means of a clamping device directly opposite the borehole wall. If the at least one feed cylinder is axially extended to the maximum, the tension is released and the frame of the down-the-hole drilling device with the rotary drive is pushed downwards to the drill head by retracting the feed cylinder and adjusting the cable suspension. The downhole drilling device can then be fixed in position on the borehole wall again by the bracing device, so that a further drilling step can be carried out by axially extending the feed cylinder.
  • downhole drilling devices are known in which the rotary drive is arranged directly on the drill head.
  • the feed cylinders for adjusting the drill head are located above the rotary drive and below the bracing device, so that the axial flow of force for the feed pressure is directed through the area of the rotary drive. This represents a loading of the area with the rotary drive.
  • the rotary drive in this arrangement is arranged close to the drill head and thus to the removal area, so that the rotary drive is exposed to shocks and vibrations during operation of the drill head, especially when removing rocky soil layers.
  • a support pipe for forming the borehole wall can be brought in via a casing machine.
  • the Drehan drive and the axial feed cylinder are arranged above the bracing device.
  • the rotary drive is mounted at a greater distance from the drill head, so that the rotary drive is less exposed to direct loads when the rock material is removed by the drill head.
  • the feed cylinders of this in-the-hole drilling device are located above the rotary drive and above the clamping device, so that once again a power flow takes place through the rotary drive, which means additional loading load on the rotary drive.
  • a further down-the-hole drilling device is known in which the bracing device is formed from two sub-devices. There is a first bracing device at an upper end of the drill, while a second bracing device is brought to a lower end of the drill.
  • the rotary drive and the feed device are arranged in the intermediate area between the two bracing devices.
  • a double arrangement of bracing devices is mandatory, which in principle leads to an increase in weight, size and costs.
  • the drilling device according to the invention is characterized in that the at least one adjusting cylinder is arranged below the bracing device, which is supported on the one hand on the first frame section and on the other hand extends towards the drill head, and in that the rotary drive device is arranged above the bracing device.
  • a basic idea of the invention is to arrange the at least one adjusting cylinder for the feed drive below the bracing device, while the rotary drive is arranged above the first frame section with the bracing device. Due to the arrangement of the at least one adjusting cylinder of the axial Feed drive directly between the bracing device and the drill head, a direct flow of force to the drill head can take place.
  • the at least one adjusting cylinder is supported on the first frame section with the bracing device directly and thus against the surrounding borehole wall. Such high forces can be applied directly to the drill head, so that even rocky layers of stone can be machined with a high pressure or feed force.
  • the at least one adjusting cylinder can be supported directly on the drill head.
  • the rotary drive device is taken out of this axial force flow, the rotary drive device being mounted on the first frame section above the bracing device. This results in a gentle arrangement of the rotary drive device and thus an overall robust construction of the drilling device.
  • the rotary drive device is mounted on the fixed frame and is consequently axially fixed. This simplifies the energy supply of the rotary drive device during the drilling step and also simplifies the overall structure of the drilling device.
  • the rotary drive device is arranged at a distance from the drill head, so that the rotary drive device with the sensitive bearings and seals is no longer directly exposed to the mechanical loads of the ablation area.
  • a preferred embodiment of the downhole drilling device consists in the fact that several adjusting cylinders are arranged evenly distributed over the circumference on the first frame section.
  • the first frame section is annular.
  • two, three or four or, if necessary, even more adjusting cylinders can be arranged in a ring around the drilling axis.
  • the actuating cylinders form the feed device and are aligned approximately parallel to the drilling axis.
  • the clamping device has one or more radially directed clamping cylinders.
  • the clamping cylinders are supported on the one hand on the first frame section, while a contact element is provided and arranged on the free side of the clamping cylinder for application to the borehole wall.
  • the borehole wall can be understood directly as the pending soil or, if appropriate, an inside of a support tube or tubing which is also introduced into the borehole to support the borehole.
  • clamping cylinders arranged in the transverse or even in the axial direction can also be provided, which can apply radial clamping forces for clamping the drilling device in the borehole via a corresponding mechanism, such as a lever mechanism.
  • the cylinders used can be actuated with any suitable fluid.
  • the at least one adjusting cylinder for axially adjusting the drill head and / or the at least one clamping cylinder of the clamping device is designed as a hydraulic cylinder.
  • the cylinders are supplied with hydraulic oil in a closed circuit from outside the borehole by a hydraulic system.
  • the hydraulic oil can also be used to operate the rotary drive device and other components of the downhole drilling device.
  • the rotary drive device can be designed in any way.
  • the rotary drive device has a drive shaft along which the drill string is mounted axially displaceably, and that axially extending drive strips are arranged to transmit a drive torque on an outer side of the drive shaft.
  • Corresponding drive strips are provided on an inside of the at least partially tubular drill string, so that torque can be transmitted between the drive strips, while at the same time an axial displaceability of the drill string relative to the drive shaft is guaranteed.
  • a hollow drive wheel can also be provided in which the drill string is mounted in a rotationally fixed but axially displaceable manner.
  • the rotary drive device has one or more rotary drives which are mounted on the first frame section. With several rotary actuators ben these can be attached in particular evenly distributed around the drilling axis on the preferably annular first frame section. Via appropriate drive pinions or a gear arrangement, the rotary drives can jointly drive the drive shaft and thus transmit the torque to the drill string.
  • a further expedient embodiment of the invention can be seen in the fact that a conveying device is provided with which soil material removed from the drill head can be carried away to the outside of the bore.
  • a corresponding feed pump can be provided on the drilling device itself or outside the borehole.
  • a conveyor line is provided along the drill, via which the removed cuttings can be removed from the drill head along the frame mens up and out of the borehole.
  • the delivery line can run partially or entirely in the drill string, which can be tubular.
  • the drilling cuttings can also be conveyed away in an air lifting process, in which air is introduced into the borehole via a supply line in order to effect removal of the drilling cuttings when the upward flow in the conveying line closes.
  • the downhole drilling device can in particular be guided in the ground via a rod.
  • a connecting device for a support cable is arranged on an upper end section of the frame of the downhole drilling device. Outside the borehole, in particular a hoist winch for raising and lowering the drill can be arranged.
  • the invention further comprises a drilling system for creating a hole in the floor, the drilling system having the above-described downhole drilling device and this being suspended by means of a support device.
  • the support device can in particular have a support cable with a hoist winch.
  • a casing machine is provided with which casing can be introduced into the ground, which forms the borehole wall, at the same time or at different times to create the borehole.
  • the piping is in particular by one or more rere support pipes are formed, which are brought into the ground via the casing machine.
  • the tubing can lead or lag the drill head depending on the soil conditions.
  • the tubing serves in particular to stabilize the borehole wall so that the downhole drilling device can reliably support itself on it.
  • piping is not absolutely necessary.
  • a further advantageous embodiment of the invention consists in that the support device is arranged on the ground or on a floating body on a water surface.
  • the support device can in particular be movable and in particular have a crawler track.
  • the floating body can be designed as a pontoon or as a ship, so that the drilling rig can also be used to create a borehole on the bottom of a body of water.
  • the down-the-hole drilling device can have a second frame section which is axially fixed, but rotatably mounted relative to the drill head.
  • this second frame section which preferably has an annular or plate-like flange, in particular the extendable ends of the adjusting cylinders of the feed drive can be articulated.
  • a second bracing device which is axially displaceable with the drill head, can also be provided on the second frame section.
  • the downhole drilling device can be fixed in the borehole by the second bracing device.
  • the first bracing device on the first frame section can then be released and, by retracting the adjusting cylinder, the first frame section with the rotary drive device and possibly other components can be tracked.
  • a further drilling step can be carried out.
  • the down-the-hole drilling device can be constructed in a modular manner, so that a relatively simple adaptation to different bore diameters can take place.
  • the method according to the invention is characterized in that at least one adjusting cylinder is arranged below the bracing device, which on the one hand is supported on the first frame section and on the other hand extends towards the drill head, the drill head when removing soil material with the at least one adjusting cylinder in the direction of the soil is pressed, and that the rotary drive device with which the drill string is driven in rotation is arranged above the bracing device.
  • the method according to the invention can in particular be carried out with the down-the-hole drilling device which has been described above.
  • the advantages described above can be achieved in this case.
  • a preferred variant of the method of the invention consists in that a casing is introduced into the ground at the same time as or offset in time for the creation of the borehole, which casing forms the borehole wall.
  • a piping machine that is known in principle can be used for this purpose.
  • the tubing which is formed from a single support tube or from a plurality of support tubes that can be connected to one another, can be introduced at the same height as the drill head or lead or lag behind it.
  • the downhole drilling device when or after the downhole drilling device is withdrawn from the bore, it is filled with a hardenable compound to form a foundation element.
  • the mass can in particular be a concrete suspension which hardens in the drilled hole to form a foundation element.
  • a prefabricated foundation element e.g. a steel pipe, is set into it and that the remaining annular gap to the bore wall is filled with a hardenable compound.
  • one or more reinforcing elements preferably steel girders or a reinforcing cage, can be inserted into the bore or the annular gap.
  • FIG. 1 shows a perspective view of a down-the-hole drilling device according to the invention with the drill head retracted;
  • FIG. 2 shows a side view of the down-the-hole drilling device in the state of FIG. 1;
  • Fig. 3 is a perspective view of the downhole drilling device of Figures 1 and
  • FIG. 4 shows a side view of the down-the-hole drilling device in the state of FIG. 3;
  • FIG. 5 shows a perspective view of a further down-the-hole drilling device with a driven drill head
  • FIG. 6 shows a perspective view of the down-the-hole drilling device from FIG. 5 with the drill head extended.
  • a first inventive downhole drilling device 10 is Darge provides. This has a scaffold-like frame 12 which comprises a first ringför-shaped frame section 14. On the top of this plate-like first frame section 14 is a rotary drive device 40, which is formed in the illustrated embodiment by three hydraulic rotary drives 42, which are evenly distributed around a longitudinal or drilling axis of the downhole drilling device 10.
  • the bracing device 50 On the underside of the first frame section 14, the bracing device 50 is attached, which is designed for radial bracing and fixing of the downhole drilling device 10 with respect to a borehole wall.
  • the annular clamping device 50 has six non-visible, radially directed clamping cylinders, on the outside of which stamp-like clamping plates 52 are placed. The clamping cylinders with the clamping plates 52 are evenly distributed around the longitudinal or drilling axis of the downhole drilling device 10.
  • An upper frame section 15 is arranged at the upper end of the frame 12. Between the upper frame section 15 and the underlying first frame section 14, a plate-shaped, ring-like intermediate section 16 is arranged, which is connected via vertically directed connecting struts 18 on the one hand to the first frame section 14 and on the other hand to the upper frame section 15 at the top.
  • a connecting device 28 for a rope suspension of the downhole drilling device 10 and two line feeds 29 are arranged laterally thereon.
  • the line feeds 29 serve on the one hand to feed a hydraulic hose line and on the other hand to feed and hold a drilling suspension discharge line.
  • control components 19 can be arranged on the plate-like intermediate portion 16 control components 19 can be arranged.
  • the upper area of the frame 12 with the first frame section 14, the upper frame section 15 and the intermediate section 16 can be constructed in a modular manner, so that the downhole drilling device 10 can be easily adapted to different borehole sizes and areas of application.
  • the forward thrust device 70 with hydraulic actuating cylinders 72 is arranged below the bracing device 50 on the first frame section 14.
  • the Stellzylin of 72 are attached to the first frame section 14 with their cylinder housings.
  • the actuating cylinders 72 are articulated to a second annular, plate-like second frame section 20.
  • the ring-shaped second frame section 20 is attached to an outside of a tubular bearing sleeve 24, in which a tubular drill string 38, which is only partially visible in Figures 3 and 4, is rotatably but axially fixed.
  • a drill head 30 is attached to the lower end of the drill string 38.
  • the drill head 30 has a central pilot tip 32 and radially directed removal elements 34 which are designed to remove soil material.
  • the second frame section 20 is mounted so as to be axially adjustable with respect to the first frame section 14.
  • a drive shaft 44 of the rotary drive device 40 projects into the tubular drill string 30.
  • the arrival Drive shaft 44 has outer, axially extending drive strips 46 which interact with corresponding inner drive strips on the inside of the tubular drill string 38 for torque transmission.
  • the drill string 38 is driven to rotate with the drill head 30 via the drive shaft 44, so that this soil can remove material.
  • the downhole drilling device 10 is shown in a state in which the drill head 30 is axially retracted.
  • the downhole drilling device 10 can be fixed in a borehole, in particular a support tube in the borehole, via the clamping device 50 by radially extending the clamping plates 52 against a borehole wall.
  • the feed device 70 can be actuated, the actuating cylinders 72 extending downwards.
  • the second frame section 20 with the bearing sleeve 24 and the drill head 30 mounted thereon is moved downwards in order to effect a corre sponding propulsion when drilling.
  • the tensioning device 50 can be released by retracting the clamping plates 52.
  • the upper area of the frame 12 can be guided downward by retracting the adjusting cylinder 72 and by letting a support cable attached to the connecting device 28 until the axially retracted state according to FIGS. 1 and 2 is reached again.
  • a further drilling step can be carried out.
  • soil material can be discharged through the frame 12 through the hollow drill string 38, the hollow drive shaft 44 by means of a suction pump 36 as a conveyor 35 and transported away via a partially shown fraudlei device 37 to the outside of the borehole.
  • the second frame section 20 with the bearing sleeve 24 can have a third frame section 27, which can be mounted linearly displaceably via linear guides 26 fixedly attached to the first frame section 14 and directed downwards.
  • the linear guides 26 can absorb torsional forces in the circumferential direction, so that the actuating cylinders 72 are relieved of transverse forces.
  • FIGS. 5 and 6 a further embodiment of the in-the-hole drilling device 10 according to the invention is shown. This basically has the same components and the same structure as the downhole drilling device 10 according to FIGS. 1 to 4.
  • a second clamping device 60 with radially deployable clamping plates 62 is arranged on the third frame section 27 which is displaceable with the drill head 30 and which is annular.
  • the down-the-hole drilling device 10 can thus be braced and fixed in relation to the borehole wall at any point in time.

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Geology (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)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Paleontology (AREA)
  • Earth Drilling (AREA)

Abstract

L'invention concerne un foret de fond de trou pour créer un trou de forage dans le sol, ayant une tête de forage pour retirer un matériau de sol; un train de tiges, à l'extrémité inférieure duquel est fixée la tête de forage; un dispositif d'entraînement rotatif pour entraîner en rotation le train de tiges conjointement avec la tête de forage; un dispositif de serrage qui est disposé sur une première partie de cadre et qui est conçu pour tendre radialement le foret de fond de trou radialement par rapport à la paroi de trou de forage; et au moins un cylindre de positionnement pour le réglage de la tête de forage dans une direction axiale. Selon l'invention, le ou les cylindres de positionnement sont disposés sous le dispositif de mise sous tension, le cylindre de positionnement étant supporté sur la première partie de cadre et s'étendant jusqu'à la tête de forage, et le dispositif d'entraînement rotatif étant disposé au-dessus du dispositif de tension.
PCT/EP2021/051043 2020-02-04 2021-01-19 Foret de fond de trou et procédé pour créer un trou de forage WO2021156049A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP20155449.0A EP3862528B1 (fr) 2020-02-04 2020-02-04 Appareil de forage d'un trou et procédé de production d'un trou
EP20155449.0 2020-02-04

Publications (1)

Publication Number Publication Date
WO2021156049A1 true WO2021156049A1 (fr) 2021-08-12

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2021/051043 WO2021156049A1 (fr) 2020-02-04 2021-01-19 Foret de fond de trou et procédé pour créer un trou de forage

Country Status (2)

Country Link
EP (1) EP3862528B1 (fr)
WO (1) WO2021156049A1 (fr)

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1105701A (en) * 1965-01-15 1968-03-13 Hydraulic Drilling Equipment L Earth drilling unit
DE2533500A1 (de) * 1974-07-29 1976-02-19 Edenvale Eng Works Gesteinsbohrmaschine
DE2734185A1 (de) 1977-07-29 1979-02-08 Leffer Stahl & App Verfahren und anlage zum niederbringen einer verrohrten tiefbohrung zur herstellung von verrohrten pfahlgruendungen
DE3741717A1 (de) 1987-12-09 1989-06-29 Wirth Co Kg Masch Bohr Vorrichtung zum niederbringen von im wesentlichen vertikalen bohrungen
EP0738355A1 (fr) * 1994-01-06 1996-10-23 Roxbury Limited Ameliorations relatives a un dispositif destine a former des piles
DE10336315A1 (de) 2003-08-07 2005-03-03 Helmut Hross Vertikalbohrvorrichtung sowie Verfahren zur Erstellung im wesentlichen vertikal ausgerichteter Grossbohrungen in Grundformationen
EP2597249A1 (fr) * 2011-11-24 2013-05-29 Bauer Spezialtiefbau GmbH Dispositif et procédé pour créer un forage vertical
EP2703596A1 (fr) * 2012-08-31 2014-03-05 BAUER Maschinen GmbH Dispositif de forage et procédé d'établissement d'un forage
EP3363987A1 (fr) * 2017-02-20 2018-08-22 BAUER Maschinen GmbH Dispositif de forage et procédé de forage destiné à produire un puits
EP2615239B1 (fr) 2012-01-02 2019-10-30 GeoSea NV Dispositif et procédé de forage de puits dans un sol constitué de roche, d'argile et/ou de matériaux connexes

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1105701A (en) * 1965-01-15 1968-03-13 Hydraulic Drilling Equipment L Earth drilling unit
DE2533500A1 (de) * 1974-07-29 1976-02-19 Edenvale Eng Works Gesteinsbohrmaschine
DE2734185A1 (de) 1977-07-29 1979-02-08 Leffer Stahl & App Verfahren und anlage zum niederbringen einer verrohrten tiefbohrung zur herstellung von verrohrten pfahlgruendungen
DE3741717A1 (de) 1987-12-09 1989-06-29 Wirth Co Kg Masch Bohr Vorrichtung zum niederbringen von im wesentlichen vertikalen bohrungen
EP0738355A1 (fr) * 1994-01-06 1996-10-23 Roxbury Limited Ameliorations relatives a un dispositif destine a former des piles
DE10336315A1 (de) 2003-08-07 2005-03-03 Helmut Hross Vertikalbohrvorrichtung sowie Verfahren zur Erstellung im wesentlichen vertikal ausgerichteter Grossbohrungen in Grundformationen
EP2597249A1 (fr) * 2011-11-24 2013-05-29 Bauer Spezialtiefbau GmbH Dispositif et procédé pour créer un forage vertical
EP2615239B1 (fr) 2012-01-02 2019-10-30 GeoSea NV Dispositif et procédé de forage de puits dans un sol constitué de roche, d'argile et/ou de matériaux connexes
EP2703596A1 (fr) * 2012-08-31 2014-03-05 BAUER Maschinen GmbH Dispositif de forage et procédé d'établissement d'un forage
EP3363987A1 (fr) * 2017-02-20 2018-08-22 BAUER Maschinen GmbH Dispositif de forage et procédé de forage destiné à produire un puits

Also Published As

Publication number Publication date
EP3862528A1 (fr) 2021-08-11
EP3862528B1 (fr) 2023-01-11

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