WO2016003350A1 - Marteau fond-de-trou ayant des écoulements parallèles pour moteur à rotation et marteau - Google Patents

Marteau fond-de-trou ayant des écoulements parallèles pour moteur à rotation et marteau Download PDF

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Publication number
WO2016003350A1
WO2016003350A1 PCT/SE2015/050622 SE2015050622W WO2016003350A1 WO 2016003350 A1 WO2016003350 A1 WO 2016003350A1 SE 2015050622 W SE2015050622 W SE 2015050622W WO 2016003350 A1 WO2016003350 A1 WO 2016003350A1
Authority
WO
WIPO (PCT)
Prior art keywords
hammer
flow
rotation motor
fluid
pressure
Prior art date
Application number
PCT/SE2015/050622
Other languages
English (en)
Inventor
Fredrik EGERSTRÖM
Original Assignee
Lkab Wassara Ab
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 Lkab Wassara Ab filed Critical Lkab Wassara Ab
Publication of WO2016003350A1 publication Critical patent/WO2016003350A1/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
    • 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
    • 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
    • E21B4/06—Down-hole impacting means, e.g. hammers
    • E21B4/14—Fluid operated hammers
    • 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
    • E21B6/02—Drives for drilling with combined rotary and percussive action the rotation being continuous
    • E21B6/04—Separate drives for percussion and rotation
    • 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
    • E21B6/06—Drives for drilling with combined rotary and percussive action the rotation being intermittent, e.g. obtained by ratchet device
    • E21B6/08—Separate drives for percussion and rotation

Definitions

  • the present invention concerns a fluid-driven down-the-hole drill comprising a housing, a drill bit mounted in a driver chuck in a manner that does not allow it to rotate, a hammer piston arranged to impact on a neck of the drill bit and a fluid-driven vane motor arranged at the housing for rotation of the drill bit.
  • Fluid-driven down-the-hole drills of this type are often used with drill rods that are joined together.
  • the fluid that drives the impacts and the rotation is led through the rods.
  • Another manner to lead the driving fluid is through what is known as "coiled tubing", a flexible drill tubing that is unreeled from a roll.
  • the advantage of using flexible tubing is that the direction of the drilling can be controlled, and that the drilling proceeds more rapidly, due to the fact that the tube does not require joining.
  • the disadvantage of this type of fluid-driven down-the-hole drill is that the fluid is led first to the part that is closest to the end of the drill rod, such as a motor that drives the rotation. The pressure and flow that are not used for rotation are led onwards to the second part, such as the hammer.
  • the purpose of the present invention is to provide in a simple manner, for fluid-driven down- the-hole drills of the type that has a separate rotation motor and a hammer, both parts access to full fluid pressure and fluid flow.
  • a second purpose is to achieve a fluid-driven down-the-hole drill that is easier to control during guided drilling.
  • Figure 1 shows a summary of a down-the-hole drill with impact mechanism and rotation motor
  • Figure 2 shows a rotation motor in a cut-through view.
  • the fluid-driven down-the-hole drill 1 shown in Figure 1 has a machine housing 2 with a conventional impact mechanism or impact hammer 3.
  • the complete machine housing is introduced into a borehole in the rock with the impact hammer directed towards the bottom of the borehole and the drill string extending from the borehole connected to a source, not shown in the drawings, of a fluid under pressure through a connection A.
  • the machine housing 2 comprises a tubular machine pipe 4, and a drill bit 6 protrudes into the end of the machine pipe by its neck 7.
  • An impact mechanism 5 with a hammer piston 8 that demonstrates a piston surface Y is mounted in the machine pipe 4 and is arranged to impact in an axially displaceable manner onto the neck 7 of the drill bit 6.
  • the hammer piston 8 is connected to a fluid flow that alternately fills and empties through a valve V one or several pressure chambers 9, 9a for fluid under pressure that impacts the piston 8 onto the neck 7 of the drill bit 6 through the piston surface Y.
  • the valve may comprise a slide valve, but may comprise also other types of valve.
  • the neck H of the drill bit 6 has a sp lined connection 10 with a drill bit chuck 1 1, which gives a guided reciprocating motion to the drill bit as shown by the arrow in Figure 1.
  • the drill bit chuck 11 is fixed screwed, fixed pressed or fixed attached in another manner at the machine pipe 4.
  • the neck 7 of the drill bit 6 is mounted in the drill bit chuck 11 after which a stop ring 13 is mounted onto the neck 7 of the drill bit 6 in order to prevent the drill bit 6 being able to fall out from the chuck 11.
  • the drill bit chuck 11 is subsequently mounted at the end 4a of the machine pipe 4.
  • the drill bit 6 may, in another embodiment, be equipped with only one slot 14 to guide the reciprocating motion.
  • the second end 4b of the machine housing is arranged with a rotation motor 15 according to Figure 2.
  • the rotation motor 15 comprises a generally known vane motor of the type that comprises a housing H with radially displaceable vanes 16 arranged on a rotor shaft 17 surrounded by a pressure chamber 18. It is an advantage that the pressure chamber be formed by the inner surface of the housing H and the jacket surface of the rotor shaft 17.
  • the rotation axis comprises a central passage 21 to lead the flow to the impact hammer 3.
  • the pressure chamber 18 is so designed that the volume increases at the start of the rotation, and subsequently decreases at the end of the rotation.
  • the vanes 16 Due to the fact that the vanes 16 are radially displaceable, the vanes 16 follow the form of the pressure chamber 18 and obtain in this way an area that increases, and subsequently obtain an area that decreases at the end of the rotation.
  • the fluid under pressure is led into the pressure chamber 18, it presses the vane 16 in front of it, whereby the rotation is achieved.
  • the drill bit 6 is caused to rotate in that it accompanies the rotation of the vane motor 15.
  • the rotation motor 15 mounted at the drill string in a manner that allows it to rotate in such a manner that the drill string remains stationary, i.e. it does not rotate, while the hammer 3 is mounted at the rotation motor 15 in a manner that does not allow it to rotate.
  • the pressurised fluid is led into the machine housing 2 through the drill rod or drill string through a connection A at the end 4b of the machine pipe at which the rotation motor 15 is placed.
  • the flow distributor 19 leads the flow from the passage of the drill string to flow pathways 20 integral to the body of the connection A.
  • the flow pathways 20 in the body of the connection lead the flow of fluid not only to the pressure chamber 18 of the rotation motor 15 but also to the central passage 21 of the motor, which passage connects the flow with the pressure chamber 9 of the hammer 3.
  • the inlet into the machine housing 2 can be arranged with a flow- regulation valve 22.
  • the valve 22 is adjusted before the drilling operation to the maximum flow that the current drilling operation is intended to use. If the resistance at the drill bit 6 becomes too low, the rotation motor 15 is thus prevented from rotating at a speed that is higher than the speed that the flow allows.
  • the flow valve 22 may be so designed, in another embodiment, that the flow limitation can be regulated during ongoing drilling.

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

La présente invention concerne un marteau fond-de-trou qui est entraîné, par l'intermédiaire d'un train de tiges de forage, par un écoulement de fluide, comprenant un boîtier ayant un marteau d'impact, le marteau d'impact étant agencé avec un outil de forage monté dans un mandrin d'entraînement, un piston-marteau ayant une surface de piston agencée pour percuter le col de l'outil de forage, et une soupape pour commander le piston-marteau vers l'arrière et vers l'avant, ce par quoi la soupape se place en alternance sous pression et élimine la pression à partir d'une chambre de pression qui entraîne le piston-marteau vers l'avant lorsqu'il est placé sous pression, le boîtier comprenant en outre un moteur à rotation entraîné par fluide de type moteur à palettes comprenant des chambres de pression ayant des palettes qui font tourner l'outil de forage lorsqu'il est placé sous pression. L'écoulement de fluide est conduit dans le boîtier par l'intermédiaire d'un distributeur d'écoulement et est distribué vers l'avant entre la chambre de pression du moteur à rotation et la chambre de pression du piston-marteau.
PCT/SE2015/050622 2014-07-04 2015-05-29 Marteau fond-de-trou ayant des écoulements parallèles pour moteur à rotation et marteau WO2016003350A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE1450848A SE538166C2 (sv) 2014-07-04 2014-07-04 Sänkborrmaskin med parallella flöden för rotationsmotor respektive hammare
SE1450848-5 2014-07-04

Publications (1)

Publication Number Publication Date
WO2016003350A1 true WO2016003350A1 (fr) 2016-01-07

Family

ID=55019720

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE2015/050622 WO2016003350A1 (fr) 2014-07-04 2015-05-29 Marteau fond-de-trou ayant des écoulements parallèles pour moteur à rotation et marteau

Country Status (2)

Country Link
SE (1) SE538166C2 (fr)
WO (1) WO2016003350A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106150349A (zh) * 2016-07-14 2016-11-23 张静 一种周向轴向负压冲击提速工具
SE2051146A1 (sv) * 2020-10-01 2022-04-02 Lkab Wassara Ab Drivanordning för roterbar drift av en borrkrona vid en sänkborrmaskin

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4006783A (en) * 1975-03-17 1977-02-08 Linden-Alimak Ab Hydraulic operated rock drilling apparatus
GB2053070A (en) * 1979-06-26 1981-02-04 Tampella Oy Ab Hydraulic drilling apparatus
GB2148776A (en) * 1983-10-28 1985-06-05 Tampella Oy Ab Fluid operated percussion drilling machine
WO2003064805A1 (fr) * 2001-12-14 2003-08-07 Wassara Ab Machine de forage entrainee par liquide

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4006783A (en) * 1975-03-17 1977-02-08 Linden-Alimak Ab Hydraulic operated rock drilling apparatus
GB2053070A (en) * 1979-06-26 1981-02-04 Tampella Oy Ab Hydraulic drilling apparatus
GB2148776A (en) * 1983-10-28 1985-06-05 Tampella Oy Ab Fluid operated percussion drilling machine
WO2003064805A1 (fr) * 2001-12-14 2003-08-07 Wassara Ab Machine de forage entrainee par liquide

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106150349A (zh) * 2016-07-14 2016-11-23 张静 一种周向轴向负压冲击提速工具
SE2051146A1 (sv) * 2020-10-01 2022-04-02 Lkab Wassara Ab Drivanordning för roterbar drift av en borrkrona vid en sänkborrmaskin
WO2022071838A1 (fr) * 2020-10-01 2022-04-07 Lkab Wassara Ab Dispositif d'entraînement pour le fonctionnement en rotation d'un foret d'un marteau de fond de trou
SE545668C2 (sv) * 2020-10-01 2023-11-28 Lkab Wassara Ab Drivanordning för roterbar drift av en borrkrona vid en sänkborrmaskin

Also Published As

Publication number Publication date
SE1450848A1 (sv) 2016-01-05
SE538166C2 (sv) 2016-03-22

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