WO2015059341A1 - Dispositif de forage - Google Patents

Dispositif de forage Download PDF

Info

Publication number
WO2015059341A1
WO2015059341A1 PCT/FI2013/000041 FI2013000041W WO2015059341A1 WO 2015059341 A1 WO2015059341 A1 WO 2015059341A1 FI 2013000041 W FI2013000041 W FI 2013000041W WO 2015059341 A1 WO2015059341 A1 WO 2015059341A1
Authority
WO
WIPO (PCT)
Prior art keywords
drilling
bit
pilot bit
groove
drilling device
Prior art date
Application number
PCT/FI2013/000041
Other languages
English (en)
Inventor
Hannu Paasonen
Original Assignee
Tri-Mach 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 Tri-Mach Oy filed Critical Tri-Mach Oy
Priority to EP13895833.5A priority Critical patent/EP3060742B1/fr
Priority to PCT/FI2013/000041 priority patent/WO2015059341A1/fr
Publication of WO2015059341A1 publication Critical patent/WO2015059341A1/fr

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
    • E21B10/60—Drill bits characterised by conduits or nozzles for drilling fluids
    • 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
    • E21B10/26—Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers
    • E21B10/28—Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers with non-expansible roller cutters
    • 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
    • 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 drilling device which comprises a pilot bit drilling a middle portion of a hole, to said bit detachable fastened ring bit said bit drilling outer circle of the hole, as well as an arrangement for pulling a casing tube into said hole during drilling, wherein in the drilling situation both the pilot bit and the ring bit are fitted to be rotated and the casing tube fitted to be unrotatable, and for removing drilling waste from drilled surface locating at front side of said bits, the drilling device comprises a flushing system, by means of which flushing medium is lead via the pilot bit to the drilling surface and returned therefrom into a flow space locating inside the casing tube.
  • Characteristics for the drilling device according to the invention is that the flushing medium flow has been by means of a channel system turned inside the pilot bit to a flow which is flowing in side direction, arranged to run a portion a inside the pilot bit in the said side direction before the flow will run in the groove on the surface of the pilot bit, which groove is open towards the drilled surface.
  • Characteristics for the pilot bit belonging to the drilling device according to the invention is that the pilot bit is designed to function by means of rotation motion and edges locating in the drilling surface and directed towards the rotation direction as a cutting edge which cuts the drilled surface during earth boring, wherein said edges are arranged to meet the drilled surface essentially first.
  • pressurized flushing flow does not hit the drilled surface but flows in horizontal direction towards the inner surface of the ring bit, wherein its effect upon the drilled surface is essentially weakened.
  • Drilling waste can, however, in same way as in known solutions flow with the flushing medium and together go away inside the casing tube.
  • soil drilling grooves have been formed in the pilot bit and cutting edges in their back portions seen in the rotation direction of the bit, wherein soil loosened by said edges moves into said groove and further therefrom into the flushing channels. Soil is not uncontrolled loosened from the area outside the hole.
  • Figure 1 shows a partial section view of a drilling device seen from side.
  • Figure 2 shows drilling device of the figure 1 seen from front.
  • Figure 3 shows another drilling device seen from front.
  • Figure 4 shows section A - A.
  • a pilot bit 1 which drills center part of a hole middle and a ring bit 2 which drills the outer circle of the hole and is detachable, like via bayonet coupling fastened to the pilot bit.
  • Casing tube 4 is pulled into the hole during drilling by means of the pilot bit 1, which bit is hammering to a ring-like casing shoe 3.
  • the casing shoe 3 has been welded to the casing tube 4 and therefore the casing shoe finally pulls the casing tube 4 into the hole.
  • Flushing medium like pressurized air, is lead via center hole 8 in the pilot bit 1 towards the top of the pilot bit 1, but this channel ends a little before the front surface of the pilot bit 1.
  • This solution has, however, very small hole 9 drilled through.
  • the hole 9 is not necessary for the invention at all and can be left undrilled.
  • the hole has for example thread, wherein a lift hook can be fastened to said hole, when the bit is handled.
  • Nearly whole flushing flow is turned in the pilot bit 1 according to the invention to horizontal direction and continues in a round channel 6 in side direction.
  • the channel 6 is opened after a distance being open of its upper portion, wherein drilling waste can move from the drilled surface and to join to flushing medium.
  • the flushing medium jet is not in any stage directed towards the drilled surface towards the drilled soil.
  • 6 in the pilot bit 1 is a hole 6 from its first portion as long as the flushing medium jet will get motion in horizontal direction.
  • the distance is for example about 2 - 3 times the diameter of the hole 6. If it is drilled soft soil, at least the flushing medium jet does not loosen too much soil with it, because the jet hits mainly to the inner surface of the ring bit 2, from where the jet continues via the channel 7 back inside the casing tube 4.
  • Figure 2 shows a drilling device seen from front and section view of the flushing groove 5, 6 from line A - A.
  • the flushing groove which comes via center hole 8 in the pilot bit 1 is divided in this drilling device into five horizontal directed holes 6 and grooves 5, 6 which are following said holes.
  • the hole 6 is forming the bottom part of the groove along the whole portion in the pilot bit 1, but the hole changes to a groove which is open upwards due to another groove 5 which has been machined above it.
  • the groove 5 has been made widening when it continues towards the outer edge of the pilot bit 1. This helps access of the flushing medium into the groove 5, 6 because there is also more produced waste in front of the pilot bit 1 when going towards its outer edge.
  • a pilot bit 1 whose drilling surface comprises only two grooves 5 and two into horizontal direction turned flushing groove 6.
  • the grooves 5 are wide and especially in soil drilling they receive soil which has loosened from the drilled surface. Soil can be loosened from the drilled surface when cutting edges 11 have been formed in the pilot bit 1 in the rear edge of the grooves 5.
  • the edges 11 are cutting the drilled surface when the pilot bit 1 rotates though they locates in the same level with the drilling surface in the pilot bit 1, because there is also advance motion for the bits 1, 2 towards the drilled surface.
  • the cutting edges 11 can be in the drilling surface a little lifted up, as section A - A shows, when the drilling surface has been made slanted surface in angle a so, that edge 11 cuts the drilled surface also with a little advance motion. Angle a is advantageous little for example 5 - 15 °.
  • the ring bit 2 pushes soil a little outside the hole and this soil at least partly flows with the flushing air into the channel 7. The flushing air cannot flow to space outside the hole as well as does not loose soil from said space.

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 concerne un dispositif de forage qui comprend un trépan pilote (1) qui fore une partie centrale d'un trou, un trépan annulaire (2) étant fixé de manière détachable audit trépan (1), ledit trépan annulaire forant le cercle externe du trou, de même qu'un agencement pour tirer un tubage (4) dans ledit trou pendant le forage, dans la situation de forage à la fois le trépan pilote (1) et le trépan annulaire (2) étant équipés pour être mis en rotation et le tubage (4) étant équipé pour être impossible à pivoter, et pour retirer des déchets de forage provenant de la surface forée située sur les côtés avant desdits trépans (1);(2), le dispositif de forage comprenant un système de lavage, à l'aide duquel un milieu de lavage est dirigé par l'intermédiaire du trépan pilote (1) vers la surface de forage et renvoyé à partir de celle-ci dans un espace d'écoulement (7) situé à l'intérieur du tubage (4). L'écoulement du milieu de lavage est fourni à l'aide d'un système de canal (8, 6) tourné à l'intérieur du trépan pilote (1) en un écoulement qui circule dans une direction latérale, agencé pour parcourir une partie (a) à l'intérieur du trépan pilote (1) dans ladite direction latérale avant que l'écoulement parcoure la rainure (5, 6) sur la surface du trépan pilote (1), laquelle rainure est ouverte en direction de la surface forée.
PCT/FI2013/000041 2013-10-22 2013-10-22 Dispositif de forage WO2015059341A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP13895833.5A EP3060742B1 (fr) 2013-10-22 2013-10-22 Dispositif de forage
PCT/FI2013/000041 WO2015059341A1 (fr) 2013-10-22 2013-10-22 Dispositif de forage

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/FI2013/000041 WO2015059341A1 (fr) 2013-10-22 2013-10-22 Dispositif de forage

Publications (1)

Publication Number Publication Date
WO2015059341A1 true WO2015059341A1 (fr) 2015-04-30

Family

ID=52992319

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/FI2013/000041 WO2015059341A1 (fr) 2013-10-22 2013-10-22 Dispositif de forage

Country Status (2)

Country Link
EP (1) EP3060742B1 (fr)
WO (1) WO2015059341A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016128607A1 (fr) * 2015-02-13 2016-08-18 Oy Atlas Copco Rotex Ab Dispositif de forage de fond de trou
WO2017162909A1 (fr) 2016-03-22 2017-09-28 Oy Atlas Copco Rotex Ab Dispositif de forage de fond
CN107448142A (zh) * 2017-09-25 2017-12-08 宜昌市五环钻机具有限责任公司 一种带去应力部卡环
US10704349B2 (en) 2015-06-24 2020-07-07 Epiroc Canada Inc. Core barrel head assembly and method

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995034740A1 (fr) 1994-06-10 1995-12-21 Ilomaeki Valto Appareil de forage
WO1996018798A1 (fr) 1994-12-13 1996-06-20 Ilomaeki Valto Procede de forage et ensemble trepan pour la realisation de ce procede
WO1996024744A1 (fr) * 1995-02-07 1996-08-15 Brit Bit Limited Ameliorations apportees a des trepans ou les concernant
WO1998013575A1 (fr) 1996-09-25 1998-04-02 Ilomaeki Valto Ensemble trepan
WO1998020229A1 (fr) 1996-11-08 1998-05-14 Sandvik Ab (Publ) Procede et appareil permettant d'attacher un tubage a un trepan dans un equipement de forage de morts-terrains
DE29912404U1 (de) 1999-07-15 1999-09-09 Herrenknecht Ag Bohrvorrichtung
WO2000011304A1 (fr) 1998-07-24 2000-03-02 Holte Ardis L Systeme de forage a circulation inverse avec bras elargisseurs verrouilles par outil
WO2002081856A1 (fr) 2001-04-04 2002-10-17 Jaervelae Jorma Procede de forage et appareil de forage
FR2889556A1 (fr) 2005-08-04 2007-02-09 Gerard Arsonnet Dispositif de forage d'un puits suivant un axe de forage pour mesurer un parametre d'une partie d'un sol
WO2010071563A1 (fr) * 2008-12-18 2010-06-24 Sandvik Intellectual Property Ab Outil de forage pour forage à percussion dans la roche ; kit de complément, trépan annulaire et sabot de tubage

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995034740A1 (fr) 1994-06-10 1995-12-21 Ilomaeki Valto Appareil de forage
WO1996018798A1 (fr) 1994-12-13 1996-06-20 Ilomaeki Valto Procede de forage et ensemble trepan pour la realisation de ce procede
WO1996024744A1 (fr) * 1995-02-07 1996-08-15 Brit Bit Limited Ameliorations apportees a des trepans ou les concernant
WO1998013575A1 (fr) 1996-09-25 1998-04-02 Ilomaeki Valto Ensemble trepan
WO1998020229A1 (fr) 1996-11-08 1998-05-14 Sandvik Ab (Publ) Procede et appareil permettant d'attacher un tubage a un trepan dans un equipement de forage de morts-terrains
WO2000011304A1 (fr) 1998-07-24 2000-03-02 Holte Ardis L Systeme de forage a circulation inverse avec bras elargisseurs verrouilles par outil
DE29912404U1 (de) 1999-07-15 1999-09-09 Herrenknecht Ag Bohrvorrichtung
WO2002081856A1 (fr) 2001-04-04 2002-10-17 Jaervelae Jorma Procede de forage et appareil de forage
FR2889556A1 (fr) 2005-08-04 2007-02-09 Gerard Arsonnet Dispositif de forage d'un puits suivant un axe de forage pour mesurer un parametre d'une partie d'un sol
WO2010071563A1 (fr) * 2008-12-18 2010-06-24 Sandvik Intellectual Property Ab Outil de forage pour forage à percussion dans la roche ; kit de complément, trépan annulaire et sabot de tubage

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP3060742A4

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016128607A1 (fr) * 2015-02-13 2016-08-18 Oy Atlas Copco Rotex Ab Dispositif de forage de fond de trou
US10533379B2 (en) 2015-02-13 2020-01-14 Terraroc Finland Oy Down-the-hole drilling device
US10704349B2 (en) 2015-06-24 2020-07-07 Epiroc Canada Inc. Core barrel head assembly and method
WO2017162909A1 (fr) 2016-03-22 2017-09-28 Oy Atlas Copco Rotex Ab Dispositif de forage de fond
EP3433463A4 (fr) * 2016-03-22 2019-11-06 Oy Epiroc Drilling Tools AB Dispositif de forage de fond
CN107448142A (zh) * 2017-09-25 2017-12-08 宜昌市五环钻机具有限责任公司 一种带去应力部卡环
CN107448142B (zh) * 2017-09-25 2023-06-20 湖北五环欧科制造技术有限公司 一种带去应力部卡环

Also Published As

Publication number Publication date
EP3060742A1 (fr) 2016-08-31
EP3060742B1 (fr) 2019-01-30
EP3060742A4 (fr) 2017-06-14

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