EP2627851A1 - Ensemble foret - Google Patents

Ensemble foret

Info

Publication number
EP2627851A1
EP2627851A1 EP11832179.3A EP11832179A EP2627851A1 EP 2627851 A1 EP2627851 A1 EP 2627851A1 EP 11832179 A EP11832179 A EP 11832179A EP 2627851 A1 EP2627851 A1 EP 2627851A1
Authority
EP
European Patent Office
Prior art keywords
bit
ring
ring bit
pilot
forms
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.)
Withdrawn
Application number
EP11832179.3A
Other languages
German (de)
English (en)
Other versions
EP2627851A4 (fr
Inventor
Mikko Mattila
Pasi Korte
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.)
Robit PLC
Original Assignee
Robit Rocktools Ltd Oy
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 Robit Rocktools Ltd Oy filed Critical Robit Rocktools Ltd Oy
Publication of EP2627851A1 publication Critical patent/EP2627851A1/fr
Publication of EP2627851A4 publication Critical patent/EP2627851A4/fr
Withdrawn legal-status Critical Current

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
    • E21B10/00—Drill bits
    • E21B10/26—Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers
    • E21B10/265—Bi-center drill bits, i.e. an integral bit and eccentric reamer used to simultaneously drill and underream the hole
    • 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
    • E21B10/36—Percussion drill bits
    • E21B10/40—Percussion drill bits with leading portion
    • 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
    • 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
    • E21B17/046—Couplings; joints between rod or the like and bit or between rod and rod or the like with ribs, pins, or jaws, and complementary grooves or the like, e.g. bayonet catches
    • E21B17/0465—Couplings; joints between rod or the like and bit or between rod and rod or the like with ribs, pins, or jaws, and complementary grooves or the like, e.g. bayonet catches characterised by radially inserted locking elements
    • 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
    • E21B17/14—Casing shoes for the protection of the bottom of the casing
    • 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
    • E21B6/00—Drives for drilling with combined rotary and percussive action
    • 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

  • Invention relates to a drill assembly for making a hole into a soil or rock which assembly comprises a pilot bit drilling the middle part of the hole and a ring bit drilling the outer circle of the hole in which case in the drilling situation the ring bit is adjusted around the pilot bit and rotary movement and drilling impacts are directed from the pilot bit to the ring bit with the help of the mentioned surfaces adjusted between the bits and conveying the impacts and that the ring bit can be removed around the pilot bit and can be installed to it and that further a coupling ring which can be locked to the ring bit belongs around the ring bit in order to join a casing pipe, which is to be pulled into the drilled hole, to the ring bit through the mentioned coupling ring.
  • a drill assembly according to the above mentioned preamble is previously known for example from the publication WO 2004/057148 in which the shown ring bit is relatively long in the axial direction because the upper part of the ring bit comprises first a flange part comprising spikes made of for example hard metal. After the flange part there is a a casing part to which a groove has first been formed and after that locking hole formations with the help of which the ring bit is locked to the pilot bit. Also a cutter shoe is relatively long in the axial direction when the cutter shoe is adjusted to exceed essentially in the axial direction both the groove and the locking hole forms located at the casing part of the ring bit. Also the body of the pilot bit is long in the axial direction and the length required by the counter forms adjusted to the locking hole forms of the ring bit is only a small part of it, less than a quarter.
  • the coupling ring is adjusted around the periphery of the ring bit in such a way that of the parts taking part in the reciprocal locking of the coupling ring and the ring bit at least two are located at different sides of the line L when the arrangement is assembled which line runs essentially through the middle point of the surface conveying the rotation of the ring bit.
  • the advantage of the invention is the fact that the size of the ring bit becomes essentially shorter in the axial direction thanks to the new locating and installation way of the coupling ring.
  • the length needed for the coupling ring becomes shorter.
  • the thickness of the cylinder part of the ring bit must however be of a certain size due to hard metal installations in which case the thickness of the cylinder part allows the formation of grooves at the outer surface of the ring bit for the attachment of the coupling ring. In some cases even one groove is enough for the coupling ring but two or even several grooves still do not increase too much the length of the coupling ring.
  • the coupling ring is installed most advantageously by shrinking or welding on top of the ring bit. In addition to that the flushing groove becomes shorter when the ring bit becomes shorter in which case the throttling caused by the flushing stream and occurring in the pneumatic line of the drilling diminishes and the drilling speed increases.
  • Figure 1 shows a ring bit according to the invention and a coupling ring as a cut view.
  • Figure 2 shows the position of a coupling ring in relation to the ring bit.
  • Figure 3 shows a pilot bit as a side view.
  • Figure 4 shows the grooves of a bayonet locking formed to the ring bit.
  • a ring bit 1 which has a cylindrical body.
  • the front part of the body comprises a flange part 14 forming an extension which flange part has a length h2 in the axial direction and to which flange part hard metal spikes 13 are attached.
  • the cylinder part directed in the back from the flange part 14 comprises two grooves 12 at its outer surface to which grooves a coupling ring 2 is attached in such a way that ring overhangs 13 of the inner surface of the coupling ring are located into the mentioned grooves 12.
  • the cylinder part of the ring bit 1 also has hole forms in order to lock it to the counter forms of the pilot bit in such a known way.
  • the hole forms comprise surfaces conveying impacts in the axial direction, such as surfaces 4 and 6 and surfaces 5 conveying rotation.
  • the surface 4 has lift, especially a surface with a constant lift.
  • This cylinder part located behind the flange part 14 of the ring bit 1 comprises essentially only counter forms 12 for the ring overhangs of the coupling ring 2 and counter forms 4 - 6; 5; 16; 17 of the locking forms 7 - 9 of the pilot bit 10.
  • the above mentioned hole forms 4 - 6 are located at the same place at the cylinder part of the ring bit 1 as the coupling ring 2.
  • the coupling ring 2 has a length hi in the axial direction.
  • the hole forms 4 - 6 require length from the cylinder part essentially the same amount than the coupling ring 2 does.
  • the ring bit 1 will thus have a short construction in the axial direction.
  • the hole forms 4 - 6 go through the cylinder part of the ring bit. Due to this the grooves 12 in the ring bit are not necessarily continuous grooves around the cylinder part.
  • a pilot bit 10 is shown which has locking hole forms 7 - 9 in a such known way as a counter form to the hole forms of the ring bit 1.
  • FIG. 4 a hole form for the bayonet locking is shown in the ring bit.
  • a protruding piece for example quadrangular, located at the side of the pilot bit moves in this solution first to the end of a vertical groove 18 in a such known way and with a reversion of the pilot bit moves against the surface 5 located at the end of a horizontal groove 17 and functions as the part which conveys the rotation of the pilot bit to the ring bit.
  • this piece can convey impacts to the ring bit in its locking position by conveying impacts onto the surface 16 of the ring bit 1. In this case the depths of the grooves 17 and 18 are less than the wall thickness of the ring bit 1.

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)

Abstract

L'invention porte sur un ensemble foret pour réaliser un trou dans un sol ou une roche, lequel agencement comprend un trépan pilote (10) forant la partie centrale du trou et un trépan annulaire (1) forant le cercle extérieur du trou, auquel cas, dans la situation de forage, le trépan annulaire (1) est ajusté autour du trépan pilote (10), et un mouvement de rotation et des impacts de forage sont dirigés à partir du trépan pilote (10) vers le trépan annulaire (1) à l'aide des surfaces mentionnées (4-6); (7-9); (15, 16) ajustées entre les trépans et conduisant la puissance, et le trépan annulaire (1) peut être retiré de dessus le trépan pilote (10) et peut être installé sur celui-ci, et, de plus, une bague d'accouplement (2) est disposée autour du trépan annulaire (1) afin de assembler un tube de cuvelage, qui peut être inséré dans le trou foré, avec le trépan annulaire (1), à l'aide de la bague d'accouplement mentionnée. La bague d'accouplement (2) est ajustée sur la périphérie du trépan annulaire (1) de telle manière que, parmi les éléments (13) participant au verrouillage de la bague d'accouplement (2), au moins deux sont disposées sur des côtés différents de la ligne (L) lorsque l'agencement est assemblé, laquelle ligne s'étend essentiellement à travers le point central de la surface (5) conduisant à la rotation du trépan annulaire (1).
EP11832179.3A 2010-10-15 2011-10-14 Ensemble foret Withdrawn EP2627851A4 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI20100349A FI125204B (fi) 2010-10-15 2010-10-15 Porasovitelma
PCT/FI2011/000042 WO2012049353A1 (fr) 2010-10-15 2011-10-14 Ensemble foret

Publications (2)

Publication Number Publication Date
EP2627851A1 true EP2627851A1 (fr) 2013-08-21
EP2627851A4 EP2627851A4 (fr) 2017-12-27

Family

ID=43064168

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11832179.3A Withdrawn EP2627851A4 (fr) 2010-10-15 2011-10-14 Ensemble foret

Country Status (7)

Country Link
US (1) US20140144710A1 (fr)
EP (1) EP2627851A4 (fr)
KR (1) KR20140032347A (fr)
CN (1) CN103261558A (fr)
FI (1) FI125204B (fr)
RU (1) RU2585779C2 (fr)
WO (1) WO2012049353A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI10639U1 (fi) 2013-07-26 2014-10-09 Atlas Copco Rotex Ab Oy Uppoporauslaitteisto
WO2016183645A1 (fr) * 2015-05-15 2016-11-24 Dos Santos Márcio Procédé et dispositif pour le traitement de tunnels au moyen de d'enfilages tubulaires avec auto-revêtement et auto-injection
CN108166480A (zh) * 2016-12-08 2018-06-15 金门机械设备有限公司 连续互扣式管桩墙或围堰施工方法
JP6366028B1 (ja) * 2017-12-25 2018-08-01 青葉建機株式会社 掘削装置及びその組立方法
CN113914769B (zh) * 2021-10-14 2024-08-16 周拯 一种轴冲带动扭转的钻井提速工具

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI95618C (fi) * 1992-12-03 1998-09-03 Jorma Jaervelae Porauslaitteisto
WO1995034740A1 (fr) * 1994-06-10 1995-12-21 Ilomaeki Valto Appareil de forage
FI96356C (fi) * 1994-12-13 1999-12-18 Valto Ilomaeki Porausmenetelmä ja teräasetelma menetelmän toteuttamiseksi
WO1998013575A1 (fr) * 1996-09-25 1998-04-02 Ilomaeki Valto Ensemble trepan
US5839519A (en) * 1996-11-08 1998-11-24 Sandvik Ab Methods and apparatus for attaching a casing to a drill bit in overburden drilling equipment
AUPR886401A0 (en) * 2001-11-14 2001-12-06 Cmte Development Limited Fluid drilling head
FI115661B (fi) * 2002-12-23 2005-06-15 Robit Rocktools Ltd Teräsovitelma
RU2338051C1 (ru) * 2007-04-16 2008-11-10 Институт горного дела Сибирского отделения Российской академии наук Способ бурения скважин с одновременной обсадкой и устройство для его осуществления
FI20070540A0 (fi) * 2007-07-10 2007-07-10 Robit Rocktools Ltd Teräsovitelma
FI20095046A0 (fi) * 2009-01-21 2009-01-21 Atlas Copco Rotex Ab Oy Menetelmä ja laitteisto uppoporaukseen

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2012049353A1 *

Also Published As

Publication number Publication date
KR20140032347A (ko) 2014-03-14
RU2585779C2 (ru) 2016-06-10
FI20100349L (fi) 2012-04-16
US20140144710A1 (en) 2014-05-29
WO2012049353A1 (fr) 2012-04-19
FI125204B (fi) 2015-06-30
CN103261558A (zh) 2013-08-21
RU2013122095A (ru) 2014-11-20
EP2627851A4 (fr) 2017-12-27
FI20100349A (fi) 2012-04-16
FI20100349A0 (fi) 2010-10-15

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