WO2002059448A1 - Procede et dispositif pour faire des trous dans le sol ou dans de la pierre - Google Patents

Procede et dispositif pour faire des trous dans le sol ou dans de la pierre Download PDF

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Publication number
WO2002059448A1
WO2002059448A1 PCT/AT2002/000030 AT0200030W WO02059448A1 WO 2002059448 A1 WO2002059448 A1 WO 2002059448A1 AT 0200030 W AT0200030 W AT 0200030W WO 02059448 A1 WO02059448 A1 WO 02059448A1
Authority
WO
WIPO (PCT)
Prior art keywords
drill bit
ring
bit
cladding tube
pilot
Prior art date
Application number
PCT/AT2002/000030
Other languages
German (de)
English (en)
Inventor
Josef Mocivnik
Karl BÖHM
Original Assignee
Techmo Entwicklungs- Und Vertriebs Gmbh
'alwag' Tunnelausbau Gesellschaft M.B.H.
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 Techmo Entwicklungs- Und Vertriebs Gmbh, 'alwag' Tunnelausbau Gesellschaft M.B.H. filed Critical Techmo Entwicklungs- Und Vertriebs Gmbh
Priority to EP02707989A priority Critical patent/EP1354121A1/fr
Publication of WO2002059448A1 publication Critical patent/WO2002059448A1/fr
Priority to HR20030591A priority patent/HRP20030591A2/hr

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
    • E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
    • E21B17/02—Couplings; joints
    • E21B17/04—Couplings; joints between rod or the like and bit or between rod and rod or the like
    • E21B17/042—Threaded
    • 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
    • E21B10/64—Drill bits characterised by the whole or part thereof being insertable into or removable from the borehole without withdrawing the drilling pipe
    • 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

Definitions

  • the present invention relates to a method for drilling, in particular percussion or rotary percussion drilling, of holes in soil or rock material, wherein a drill bit, which is mounted on a drill pipe and is radially divided into a central pilot bit and a ring bit surrounding the pilot bit, is divided by a bit beating and / or rotating movement a borehole is formed and a casing or cladding tube is inserted into the borehole.
  • the invention further relates to a device for drilling, in particular percussion or rotary percussion drilling, of holes in soil or rock material, wherein a drill bit supported on a drill pipe forms a drill hole by a striking and / or rotating movement and the drill bit in the radial direction in a central pilot drill bit and a ring drill bit surrounding the pilot drill bit are of split design and a cladding or casing tube can be inserted into the borehole.
  • Such a cladding or casing tube it is known in particular for thin-walled or light constructions of a cladding or casing tube, to couple it directly to the drill bit and, through the propulsion movement or drilling movement of the drill bit, the casing tube, which, for example, is only subjected to tensile stress with the Drill bit is coupled to insert into the interior of the borehole.
  • the casing tube which, for example, is only subjected to tensile stress with the Drill bit is coupled to insert into the interior of the borehole.
  • Such an embodiment is known for example from WO 98/21439.
  • split core bits in the radial direction is not readily possible in such embodiments, since the normally provided detachability or separability between the pilot core bit and the ring core bit after completion of the bore the ring bit is not properly positioned or can remain in the foremost section of the borehole.
  • the present invention now aims to provide a method and an apparatus for drilling, in particular percussion or rotary impact drilling, of holes in soil or rock material, using a drill bit divided into a pilot bit and a ring bit and one after completion of the bore, at least the central pilot drill bit can be removed from the borehole via a separate drive and a casing or jacket tube can be inserted and thus can be used further.
  • the method according to the invention based on a method of the type mentioned at the outset, is essentially characterized in that after completion of the bore, the ring core bit is connected to the end of the cladding tube facing the core bit and detached from the central pilot bit bit of the core bit and that the pilot bit bit is brought out of the borehole.
  • the ring core bit is connected to the cladding tube and released from the central pilot core bit after completion of the bore, even in one embodiment in which the cladding tube or casing tube is inserted into the borehole with a separate drive, it is possible after completion of the Remove at least the central pilot drill bit from the drill hole and thus continue to use if necessary while the ring drill bit is securely positioned on the cladding tube.
  • an anchor and / or a hardening material is brought into the borehole from the borehole with the ring drill bit attached to it.
  • an anchor and / or hardening material for example, is subsequently introduced into the borehole, whereupon the cladding tube with the ring drill bit attached to it is brought out of the borehole, so that the ring drill bit also is available for further use.
  • This means that correspondingly wear-resistant ring drill bits can thus also be used for short drill hole lengths, since these can be removed from the drill hole after the drill hole has been completed and, if appropriate, anchoring has been formed, and can thus be used further.
  • connection of the ring bit to the cladding tube is carried out by screwing between a threaded section provided on the outer circumference of the ring bit and a complementary internal thread of the cladding tube becomes.
  • Such a screw connection by providing a threaded connection can be made correspondingly robust and resistant, so that even under the harsh environmental conditions during drilling operation, the correct thread structure can be maintained, which after completion of the borehole provides a reliable connection or fixation between the ring drill bit and the cladding tube.
  • the jacket or cladding tube when the jacket or cladding tube is inserted separately, it is usually introduced into the borehole at a short distance behind the drill bit.
  • the ring drill bit For a connection between the ring drill bit and the cladding tube, it is proposed in this connection that the ring bit is withdrawn against the drilling direction against the end of the cladding tube facing the drill bit, as is the case with a further preferred embodiment of the method according to the invention.
  • pilot drill bit be released from the ring drill bit after the ring drill bit has been connected to the cladding tube by rotating and / or striking the pilot drill bit with separation or loosening of at least one fastening element between the pilot drill bit and the ring core bit is made.
  • Fastening elements of this type can be constructed and arranged sufficiently robustly and reliably in order to ensure a reliable coupling between the pilot bit and the ring bit during the drilling process, while by briefly applying the pilot bit after the ring bit has been fixed to the cladding tube, a loading movement of the ring bit is no longer possible, a separation or shearing of such fasteners, for example at the interface between the pilot bit and the ring bit, entails so that proper separation of the pilot bit from the ring bit can be achieved.
  • a device of the type mentioned is characterized essentially in that the ring drill bit can be connected to the end of the cladding tube facing the drill bit and can be detached from the pilot drill bit in a manner known per se. It is thus ensured according to the invention that a reliable coupling between the ring drill bit and the cladding tube is possible after completion of the borehole, so that the pilot drill bit can be removed from the borehole accordingly.
  • End is provided with an external thread which can be screwed into a complementary internal thread of the cladding tube.
  • the borehole may extend over longer lengths and thus the cladding tube and the drill string are also made correspondingly long and in each case via drives provided outside the borehole and to enable a safe and reliable connection or screw connection, it is proposed according to a further preferred embodiment that the external thread of the ring drill bit and / or the internal thread of the cladding tube is formed with a bevel or chamfer at the ends facing each other (are) .
  • the ring bit have at least one detachable or separable one
  • Fastening element in particular at least one fastening bolt, is mounted on the pilot drill bit, as this corresponds to a further preferred embodiment of the device according to the invention.
  • FIG. 1 shows a schematic side view, partly in section, of a device according to the invention for carrying out the method according to the invention
  • Fig. 2 in an enlarged scale in a side view again partially in section the area of the drill bit as well of the separately insertable jacket or jacket tube of the device according to the invention according to FIG. 1 during the drilling process;
  • FIG. 3 shows, in a representation similar to FIG. 2, the process of a connection between the ring drill bit and the cladding tube after completion of the borehole;
  • FIG. 4 shows, in turn, a representation similar to FIGS. 2 and 3, the process of bringing out or removing the pilot drill bit from the borehole after separation from the ring drill bit;
  • Fig. 5 in a representation similar to the previous figures, the cladding tube with the ring drill bit, an anchor or a device for introducing a hardening material is indicated in the borehole.
  • a device for drilling, in particular impact or rotary impact drilling is shown schematically at 1 in a borehole indicated schematically at 2, a drill bit 3, which is shown in detail in the following figures, consisting of a central pilot drill bit 4 and one the pilot drill bit 4 surrounding ring drill bit 5 is formed. Both drill bit elements 4 and 5 each have dismantling elements, for example hard material inserts 6.
  • a drive indicated schematically at 7, is provided, which acts on the drill bit 3 via a drill rod, indicated schematically at 8.
  • a rotary movement corresponding to the arrow 10 is exerted on the drill pipe 8 and thus on the drill bit 3, so that the drilling process is carried out by a combined striking and turning of the drill bit elements 4 and 5.
  • a comparatively solid jacket or cladding tube 11 is also introduced into the borehole 2 at a distance from the drill bit 3, an additional drive 12 being provided for this purpose, the translational movement of the cladding tube 11 being indicated by the arrow 13 is.
  • FIG. 1 also shows schematically that material 14 which has been removed is essentially brought out of the borehole 2 through the annular space or free space defined between the drill pipe 8 and the cladding tube 11 and exits this annular space outside the borehole via corresponding outlet openings 15.
  • FIG. 2 shows the design of the drill bit 3 in greater detail, it being clear that the central pilot drill bit 4 is surrounded by an annular drill bit 5.
  • rinsing channels or passages 16 for introducing a cooling or rinsing fluid into the area of the drill bit 3 are also indicated in the interior of the pilot drill bit.
  • a fastening element or fastening bolt 17 is indicated, which provides a secure connection between the pilot drill bit 4 and the ring drill bit 5 during the drilling process, three fastening bolts 17 of this type being distributed over the circumference at approximately the same angular distance, for example.
  • an internal thread 19 can be seen in FIG. 2, with a complementary one
  • External thread 20 is indicated at the end of the ring drill bit 5 facing away from the excavation surface, whereby threads 19 and 20, as can be seen from the following illustrations, Licher will be seen, after completion of the hole, a connection between the ring core 5 and the cladding tube 11 will be made.
  • a guide or support 21 for positioning the cladding tube 11 relative to the drill string 8 or the drill bit 3 is also indicated.
  • the front end 18 of the cladding tube 11 and the ring drill bit 5 are loosened or separated from that fixed at the front end 18 of the cladding tube 11 by a movement of the pilot drill bit 4 against the direction of advance in the direction of arrow 22

Landscapes

  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Life Sciences & Earth Sciences (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)
  • Drilling And Exploitation, And Mining Machines And Methods (AREA)
  • Drilling And Boring (AREA)

Abstract

L'invention concerne un procédé et un dispositif pour faire des trous (2) dans le sol ou dans de la pierre. Un trou de forage est formé par un déplacement de frappe et/ou de rotation au moyen d'une couronne de forage (3) montée sur une tige de forage (8), divisée dans le sens radial en une couronne de forage pilote centrale (4) et une couronne de forage annulaire (5) qui entoure la couronne de forage pilote (4), un tube de chemisage ou de gainage (11) étant introduit dans le trou de forage (2). Il est prévu, selon l'invention, qu'après finissage du forage, la couronne de forage annulaire (5) soit assemblée avec l'extrémité (18) du tube de gainage (11) faisant face à la couronne de forage, puis libérée de la couronne de forage pilote centrale (4) de la couronne de forage, et que la couronne de forage pilote (4) soit sortie du trou de forage (2).
PCT/AT2002/000030 2001-01-25 2002-01-25 Procede et dispositif pour faire des trous dans le sol ou dans de la pierre WO2002059448A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP02707989A EP1354121A1 (fr) 2001-01-25 2002-01-25 Procede et dispositif pour faire des trous dans le sol ou dans de la pierre
HR20030591A HRP20030591A2 (en) 2001-01-25 2003-07-21 Method and device for boring holes in the floor or in rock

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ATGM57/2001 2001-01-25
AT0005701U AT5482U1 (de) 2001-01-25 2001-01-25 Verfahren und vorrichtung zum bohren von löchern in boden- oder gesteinsmaterial

Publications (1)

Publication Number Publication Date
WO2002059448A1 true WO2002059448A1 (fr) 2002-08-01

Family

ID=3480376

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AT2002/000030 WO2002059448A1 (fr) 2001-01-25 2002-01-25 Procede et dispositif pour faire des trous dans le sol ou dans de la pierre

Country Status (5)

Country Link
EP (1) EP1354121A1 (fr)
AT (1) AT5482U1 (fr)
CZ (1) CZ20031971A3 (fr)
HR (1) HRP20030591A2 (fr)
WO (1) WO2002059448A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007021978A1 (fr) * 2005-08-12 2007-02-22 Baker Hughes Incorporated Trépan aléseur verrouillable
WO2012101433A3 (fr) * 2011-01-27 2013-11-28 Minova International Limited Dispositif de forage pour forage à percussion ou forage rotatif à percussion comprenant une gaine d'accouplement

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998021439A1 (fr) 1996-11-12 1998-05-22 Techmo Entwicklungs- Und Vertriebs Gmbh Procede et dispositif pour forer et revetir en meme temps des trous

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998021439A1 (fr) 1996-11-12 1998-05-22 Techmo Entwicklungs- Und Vertriebs Gmbh Procede et dispositif pour forer et revetir en meme temps des trous

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007021978A1 (fr) * 2005-08-12 2007-02-22 Baker Hughes Incorporated Trépan aléseur verrouillable
US7416036B2 (en) 2005-08-12 2008-08-26 Baker Hughes Incorporated Latchable reaming bit
GB2450433A (en) * 2005-08-12 2008-12-24 Baker Hughes Inc Latchable reaming bit
GB2450433B (en) * 2005-08-12 2010-12-01 Baker Hughes Inc Latchable reaming bit
WO2012101433A3 (fr) * 2011-01-27 2013-11-28 Minova International Limited Dispositif de forage pour forage à percussion ou forage rotatif à percussion comprenant une gaine d'accouplement

Also Published As

Publication number Publication date
CZ20031971A3 (cs) 2003-11-12
HRP20030591A2 (en) 2004-08-31
EP1354121A1 (fr) 2003-10-22
AT5482U1 (de) 2002-07-25

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