WO2005121494A1 - Dispositif pour une machine à forer la pierre - Google Patents

Dispositif pour une machine à forer la pierre Download PDF

Info

Publication number
WO2005121494A1
WO2005121494A1 PCT/NO2005/000200 NO2005000200W WO2005121494A1 WO 2005121494 A1 WO2005121494 A1 WO 2005121494A1 NO 2005000200 W NO2005000200 W NO 2005000200W WO 2005121494 A1 WO2005121494 A1 WO 2005121494A1
Authority
WO
WIPO (PCT)
Prior art keywords
drill
drill bit
drilling
drill bits
drilling head
Prior art date
Application number
PCT/NO2005/000200
Other languages
English (en)
Norwegian (no)
Inventor
Per Olav Haughom
Original Assignee
Sira-Kvina Kraftselskap Da
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 Sira-Kvina Kraftselskap Da filed Critical Sira-Kvina Kraftselskap Da
Publication of WO2005121494A1 publication Critical patent/WO2005121494A1/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
    • E21B7/00—Special methods or apparatus for drilling
    • E21B7/002—Drilling with diversely driven shafts extending into the borehole
    • 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
    • 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
    • E21B4/16—Plural down-hole drives, e.g. for combined percussion and rotary drilling; Drives for multi-bit drilling units

Definitions

  • This invention relates to a rock-drilling machine. More particularly it concerns a rock-drilling machine, which is provided with at least two drill bits, a first drill bit rotating at a different speed relative to a second drill bit.
  • drilling equipment in which the drilling machine with rotary equipment for the drill bit and necessary auxiliary equipment is placed on the surface.
  • a drill string with an associated drill bit is rotated by a drilling machine.
  • the drill string itself includes pipe sections, which are being screwed together by means of threaded connections during drilling.
  • the cuttings produced are washed out by means of a liquid, which is supplied through a centric hole in the drill string. The liquid returns in the space between the drill string and the borehole wall, carrying the cuttings.
  • a fluid motor which is placed in the front portion of the drill string, is used to drive the drill bit.
  • the motor is driven by a fluid flow, which is pumped through the drill string.
  • a so-called "knee joint" Between the motor and the drill bit is arranged a so-called “knee joint" to steer the drilling in the desired direction.
  • the invention has as its object to remedy or reduce at least one of the drawbacks of the prior art.
  • a drilling head includes several drill bits, each drill bit being connected to a corresponding drill bit gear.
  • the drill bits are arranged to rotate at mutually dissimilar speeds. The speeds are adapted to the radial distances of the respective drill bits from the central axis of the borehole in order to achieve a favourable peripheral speed for each of the drill bits.
  • the drill bits can work close to their ideal peripheral speeds in the type of rock concerned.
  • at least one of the drill bits is counter-rotating relative to the rest of the drill bits. Thereby, the torque acting on the drill string may be reduced to a substantial degree relative to that with the use of the prior art .
  • the drilling head By providing the drilling head with an actuator, which is movable relative to the borehole and arranged to bear on the cylinder surface of the borehole, the drilling head may be steered. Rotating the drilling head into such a position that the actuator will urge the drilling head into a desired direction controls the drilling direction.
  • Figure 1 shows a drill jumbo and a drilling head, in which, during drilling, the drilling head is moved into the ground by means of a drill string.
  • Figure 2 shows, on a larger scale, the drilling head of Figure 1 ;
  • Figure 3 shows, in a further enlarged scale, the drilling head partially in section.
  • the reference numeral 1 identifies a rock- drilling machine, which includes a drilling head 2, a drill string 4 and a drill jumbo 6.
  • the drill jumbo 6, which forms a feeding device for the drill string 4 is provided with a belt undercarriage 8 and a rotatable feeding ramp 10, which is arranged to move the drill string 4 in its axial direction.
  • the feeding ramp 10 is rotated about a rotational axis 12 by means of a hydraulic cylinder 14. Necessary energy supply for the drill jumbo 6 and operating equipment and anchoring to the ground 16 are not shown.
  • the drill string 4 is made up of joinable pipes and is supplied with water through a hose 17. At suitable intervals there are guides 18 connected to the drill string 4. The guides 18 are arranged to bear on the borehole 20 to prevent the drill string 4 from buckling under its relatively great pressure load.
  • An energy supply cable 22 extends together with the drill string 4 in to the drilling head 2 and may with advantage be clamped to the drill string 4.
  • the drilling head 2 includes a first drill bit 24 and a second drill bit 26, the first drill bit 24 having the smaller external diameter.
  • the first drill bit 24 is arranged to drill a pilot bore 28 as the drilling head 2 drills into the ground 16.
  • a control housing 30 is provided with a control piston 32 and extends between the first drill bit 24 and the second drill bit 26.
  • An electric motor 34 for driving the drill bits 24 and 26 is built into a motor housing 36, the motor housing 36 being connected to the drill string 4.
  • the torque from the drive shaft 37 of the motor 34 is transmitted via a first planetary gear 38 to the first drill bit 24 and to a second planetary gear 40.
  • the first planetary gear 38 is arranged to gear down the rotational speed of the drive shaft 37
  • the second planetary gear 40 is arranged to gear down the rotational speed of the second drill bit 26 and changes the rotational direction relative to the rotational speed and rotational direction of the first drill bit 38.
  • a non-rotating assembly includes the motor housing 36 which is connected to the drill string 4, a first bearing flange 42 located between the motor housing 36 and the first planetary gear 38, the ring gear 44 of the first planetary gear 38, the planet wheel holder 46 of the second planetary gear 40, a bearing spindle 48 projecting forwards from the second planetary gear 40 towards the first drill bit 24, and the control housing 30.
  • the control piston 32 of the control housing 30 can be rotated into the desired radial position in order to control the drilling direction of the drilling head 2.
  • the force of the control piston 32 is adjusted in a manner known per se.
  • the planet wheel holder 50 of the first planetary gear 38 is supported in the first bearing flange 42, the planet wheel holder 46 of the second planetary gear 40 and the bearing spindle 48 by means of bearings 52, and in the drive shaft 36 of the motor 34 by means of bearings 54.
  • a kelly bushing 56 extends concentrically through the bearing spindle 48 and is releasably connected to the planet wheel holder 50 of the first planetary gear 38 and to the first drill bit 24.
  • the kelly bushing 56 is supported in the control housing 30 by means of a bearing 58.
  • a centric channel 60 extends from the first drill bit 24 through the kelly bushing 56, planet wheel holder 50, drive shaft 37 to the pipe string 4.
  • Necessary seals 62 prevent fluid from entering the bearings 52, 54 and 58.
  • the second drill bit 26 is supported on the bearing spindle 48 by means of the bearings 64, whereas seals 66 prevent fluid from entering the bearings 64.
  • a first planet wheel 68 rotates about a first planet axle 70 connected to the planet wheel holder 50 of the first planetary gear 38.
  • the planet wheel 68 engages a cogging 72 on the drive shaft 37 of the motor 34, and the first ring gear 44. Because the first ring gear 44 forms part of the non-rotating assembly, the rotational speed of the planet wheel holder 50 and, thereby, of the first drill bit 24 equals the rotational speed of the drive shaft 37 multiplied by the pitch diameter of the cogging 72 divided by the sum of the pitch diameters of the cogging 72 and the first ring gear 44.
  • a second planet wheel 74 rotates about a second planet axle 76 which is connected to the planet wheel holder 46 of the second planet gear 40, also forming part of the non-rotating assembly.
  • the second planet wheel 74 engages a sun wheel 78, which forms part of the first planet wheel holder 50 of the first planetary gear 38, and a second ring gear 80, which is connected to the second drill bit 26.
  • the rotational speed of the second ring gear 80 and, thereby, of the second drill bit 26 equals, with a negative sign, the rotational speed of the first drill bit 24 multiplied by the ratio between the pitch circles of the sun wheel 78 and the second ring gear 80.
  • Choosing an appropriate gear ratio in the first planetary gear 38 and controlling the speed of the motor 34 can adjust the rotational speed of the first drill bit 24.
  • the relative rotational speed of the second drill bit 26 relative to the rotational speed of the first drill bit 24 is determined by the selected gearing in the second planetary gear 40.
  • the torque of the drill string 4 is determined mainly by the external diameter and the rotational speed of the first drill bit 24 and the external diameter and the rotational speed of the second drill bit 26. By selecting suitable sizes for these parameters it is possible to reduce the torque absorbed by the drill string 4 to a substantial degree.

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)
  • Drilling And Exploitation, And Mining Machines And Methods (AREA)

Abstract

Un dispositif pour une machine de forage de la pierre qui comprend une tête de forage (2) connectée par l'intermédiaire d'un train de tiges de forage (4) à un dispositif d'alimentation (6), la tête de forage (2) étant fournie avec au moins deux outils de forage (24, 26), au moins un des outils de forage (24, 26) effectue des rotations à des vitesses variables relativement à l'autre outil de forage (24, 26).
PCT/NO2005/000200 2004-06-11 2005-06-13 Dispositif pour une machine à forer la pierre WO2005121494A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NO20042426 2004-06-11
NO20042426A NO322195B1 (no) 2004-06-11 2004-06-11 Anordning ved bergboremaskin.

Publications (1)

Publication Number Publication Date
WO2005121494A1 true WO2005121494A1 (fr) 2005-12-22

Family

ID=35005919

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/NO2005/000200 WO2005121494A1 (fr) 2004-06-11 2005-06-13 Dispositif pour une machine à forer la pierre

Country Status (2)

Country Link
NO (1) NO322195B1 (fr)
WO (1) WO2005121494A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NO326032B1 (no) * 2006-07-24 2008-09-01 Sira Kvina Kraftselskap Fremgangsmåte og anordning for retningsstyring av bergboremaskin
WO2012109090A2 (fr) 2011-02-09 2012-08-16 Longyear Tm, Inc. Appareil de perçage hélicoïdal, systèmes et procédés associés
WO2013162377A1 (fr) 2012-04-23 2013-10-31 Norwegian Hard Rock Drilling As Dispositif de forage et procédé pour son utilisation
EP2411621A4 (fr) * 2009-03-26 2017-01-11 Longyear Tm, Inc. Appareil, systèmes et procédés de forage hélicoïdal
CN110410056A (zh) * 2019-08-08 2019-11-05 河北中瑞智能机械设备制造有限公司 一种凿岩台车的自动控制系统及其控制方法

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3064958A (en) * 1960-09-27 1962-11-20 Joy Mfg Co Drilling, core cutting and dislodging head for mining machines
GB1231147A (fr) * 1968-02-19 1971-05-12
DE3728270A1 (de) * 1987-08-25 1989-06-01 Klemm Bohrtech Verfahren und vorrichtung zur herstellung von betonpfaehlen im boden
EP0543140A2 (fr) * 1991-11-21 1993-05-26 Gu Tiefbau Ag Dispositif de forage pour le génie civil et procédé pour la création de colonnes de stabilisation ou de structures analogues dans le sol
GB2337062A (en) * 1997-04-28 1999-11-10 Huang Chia Hsiung Cutter head

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NO301497B1 (no) * 1996-02-01 1997-11-03 Reidar Martinsen Tunnellboremaskin med vakuumsugeenhet

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3064958A (en) * 1960-09-27 1962-11-20 Joy Mfg Co Drilling, core cutting and dislodging head for mining machines
GB1231147A (fr) * 1968-02-19 1971-05-12
DE3728270A1 (de) * 1987-08-25 1989-06-01 Klemm Bohrtech Verfahren und vorrichtung zur herstellung von betonpfaehlen im boden
EP0543140A2 (fr) * 1991-11-21 1993-05-26 Gu Tiefbau Ag Dispositif de forage pour le génie civil et procédé pour la création de colonnes de stabilisation ou de structures analogues dans le sol
GB2337062A (en) * 1997-04-28 1999-11-10 Huang Chia Hsiung Cutter head

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NO326032B1 (no) * 2006-07-24 2008-09-01 Sira Kvina Kraftselskap Fremgangsmåte og anordning for retningsstyring av bergboremaskin
EP2044285A4 (fr) * 2006-07-24 2015-06-17 Norhard As Procédé et dispositif pour la commande directionnelle d'une machine de forage de roche
EP2411621A4 (fr) * 2009-03-26 2017-01-11 Longyear Tm, Inc. Appareil, systèmes et procédés de forage hélicoïdal
WO2012109090A2 (fr) 2011-02-09 2012-08-16 Longyear Tm, Inc. Appareil de perçage hélicoïdal, systèmes et procédés associés
EP2673449A2 (fr) * 2011-02-09 2013-12-18 Longyear TM, Inc. Appareil de perçage hélicoïdal, systèmes et procédés associés
EP2673449A4 (fr) * 2011-02-09 2014-10-22 Longyear Tm Inc Appareil de perçage hélicoïdal, systèmes et procédés associés
WO2013162377A1 (fr) 2012-04-23 2013-10-31 Norwegian Hard Rock Drilling As Dispositif de forage et procédé pour son utilisation
NO334472B1 (no) * 2012-04-23 2014-03-17 Norhard As Anordning for boring og fremgangsmåte ved bruk av samme
CN110410056A (zh) * 2019-08-08 2019-11-05 河北中瑞智能机械设备制造有限公司 一种凿岩台车的自动控制系统及其控制方法

Also Published As

Publication number Publication date
NO20042426D0 (no) 2004-06-11
NO20042426L (no) 2005-12-12
NO322195B1 (no) 2006-08-28

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