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WO2010043757A1 - Procédé et appareil de forage pour forage en fond de trou - Google Patents

Procédé et appareil de forage pour forage en fond de trou Download PDF

Info

Publication number
WO2010043757A1
WO2010043757A1 PCT/FI2009/050700 FI2009050700W WO2010043757A1 WO 2010043757 A1 WO2010043757 A1 WO 2010043757A1 FI 2009050700 W FI2009050700 W FI 2009050700W WO 2010043757 A1 WO2010043757 A1 WO 2010043757A1
Authority
WO
WIPO (PCT)
Prior art keywords
drilling
hammering
water
casing part
unit
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.)
Ceased
Application number
PCT/FI2009/050700
Other languages
English (en)
Inventor
Jukka Ahonen
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.)
Tercope Finland Oy
Original Assignee
Atlas Copco Rotex Oy 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 Atlas Copco Rotex Oy AB filed Critical Atlas Copco Rotex Oy AB
Priority to US13/123,987 priority Critical patent/US20110198129A1/en
Priority to EP09820305A priority patent/EP2337918A1/fr
Publication of WO2010043757A1 publication Critical patent/WO2010043757A1/fr
Anticipated expiration legal-status Critical
Ceased 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
    • 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
    • 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
    • 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 invention relates to a method and drilling apparatus for down-the-hole drilling according to the preambles of the independent claims.
  • a boring tool which is meant for boring and/or hammer drilling, to be used in connection with a drill rod unit placed inside a mantle pipe.
  • the boring tool to be attached at the front end of the drill rod unit has a center drill, being provided with a cutting unit, and an eccentric reaming drill, being placed after the center drill, the reaming drill having also a cutting unit.
  • the reaming drill moves with respect to the center drill between a drilling position, in which it is positioned sidewards in front of the mantle pipe, and a return position, in which it is withdrawn in radial direction inside the mantle pipe.
  • the center drill is in most cases provided with four cutting parts directed radially and being made of hard metal
  • the reamer for its part comprising either one or two radially directed cutting parts made of hard metal
  • the cutting parts are replaced by bit parts being arranged in a certain manner.
  • the drilling head of the drilling unit of the drilling apparatus existing inside a casing part or in other words a so called casing pipe according to this patent, is formed of a first frame part and an annular second frame part, in the drilling surfaces of which there has been arranged drilling organs, such as drill bits or like, of the first and second drilling means or in other words of the pilot and the reamer.
  • the first drilling means that is the first frame part forming the pilot is being released from the second frame part forming the reamer in order to pull the same alone off from a drilled hole after the drilling situation.
  • the second organs of the flushing means for removal of drilling waste being generated are arranged to lead drilling waste by means of an assembly belonging to the counterpart surface arrangement, which connects the said drilling means together for a drilling situation unrotatively in respect with each other and in both directions longitudinally, which, in other words, is being carried out as an advantageous embodiment by loosening grooves, belonging to a bayonet coupling, placed longitudinally in the outer periphery of the first frame part.
  • a problem particularly in performing drilling with a pressure medium operated hammering device or an air hammer (DTH) is the fact that flushing air is aimed directly at a drilled surface.
  • the pressurized air may penetrate the soil, whereby depending on the nature of the soil, it may get drifted to the surrounding structures and thus certain circumstances cause changes to weight-carrying capacity of structures under strain in the environment by eliminating/decreasing load capacity of e.g. friction piles.
  • DFS-system In order to decrease harmful effects of pressurized air, it is in principle possible to carry out drilling also by a so called DFS-system, in which the down-the- hole drill is of so called RC- (Reverse Circulation) type and, which uses pressurized air in the hammering device and possibly water or some other medium for flushing, in which case the flushing medium is lead to outside of the air hammer and the casing to be drawn.
  • RC- Reverse Circulation
  • the most important advantages of the method and drilling apparatus according to the invention may be mentioned simplicity and efficiency of the constructions and operating principles enabled by the same first of all thanks to the fact that use of pressurized air can be totally avoided, and on the other hand thanks to the fact that one and the same water based medium can be used both for the hammering and the flushing.
  • One crucial advantage of the method according to the invention is also the fact that the water based medium being used for flushing packs substance loosened from the soil upward along a narrow channel drilled around the casing part or in other words the casing pipe so that it simultaneously tightens the surrounding soil by aid of operating vibration of the hammering device or in other words the hammer and the loosened ground substance.
  • figure 1 is shown as a longitudinal cross-section a general operating principle of an advantageous drilling apparatus exploiting the method according to the invention
  • figure 2 is shown as a longitudinal cross-section an advantageous implementation of a drilling head of the drilling apparatus according to the invention
  • figure 3 is shown a drilling surface of the implementation shown in figure 2 as seen from the front, and
  • FIG 4 is shown as a longitudinal cross-section furthermore one advantageous drilling head of the drilling apparatus as an alternative to the one shown in figure 2.
  • the invention relates first of all to a method for down-the-hole drilling that is carried out by a drilling apparatus, having a drilling device 1 that comprises a casing part 2 and at least during a drilling situation an essentially inside thereof existing drilling unit 3, at the drilling head of which there are at least first drilling means 4 for drilling a center hole, second drilling means 5 for reaming the center hole for the casing part 2, a flushing flow arrangement 6 for leading of drilling waste by influence of the flushing medium to outside of the drilling device, at least partly upward along the outer surface of the drilling device 1, and a hammering device operated by pressure medium for transmitting of a hammering motion t4 to the drilling means 4, 5 for drilling.
  • the first drilling means 4 are coupled with the second drilling means 5 first of all power- transmittedly in order to carry out cooperation thereof at least during a drilling situation with the second drilling means 5 for a rotational motion w4, a feeding motion z4 and the hammering motion t4, and on the other hand removably in order to enable removal thereof from the hole.
  • the casing part 2 is furthermore arranged to be drawn to a hole to be drilled by the drilling unit 3.
  • a hammering device 7 is being used that is operated essentially by a water-based pressure medium, whereby at least a part of the water-based pressure medium is being used furthermore as the flushing medium in the drilling.
  • the method according to the invention is being applied for advantageously when operating with a drilling apparatus, the drilling head of which consisting of with reference to those advantageous embodiments shown as alternative constructions e.g. in figures 2 and 4 a first frame part 4a and a second frame part 5a, whereby the drilling surfaces of the said frame parts are provided with drilling organs of the first and the second drilling means 4, 5, such an integrated drilling part, separate drilling pieces, bits or like, whereby flushing medium is being led to the drilling head internally in the drilling device 1, such as through a drill rod/rods pt and the drilling unit 3 and, whereby a casing shoe 8 is being exploited in order to couple the drilling unit 3 with an end of the casing part 2.
  • water, water-polymer mixture, water-bentonite mixture and/or like is being used as the water-based pressure and flushing medium.
  • a reamer is being used as the second drilling means 5 that is rotationally symmetrical and that has an essentially continuing drilling surface radially, when viewed in a cross-section perpendicular to a longitudinal direction s of the drilling unit 3.
  • a reamer is being used as the second drilling means 5 that operates on eccentric principle, being non-symmetrical and that opens radially outwards for drilling.
  • the invention relates also to a drilling apparatus meant for down-the-hole drilling that has a drilling device 1, having a hammering device 7 that operates essentially by a water-based pressure medium, such as water, water-polymer mixture, water-bentonite mixture and/or like, and wherein at least a part of the water- based pressure medium operating the hammering device 7 is arranged furthermore to be utilized as a flushing medium in the drilling.
  • a water-based pressure medium such as water, water-polymer mixture, water-bentonite mixture and/or like
  • At least a part of the water-based pressure medium operating the hammering device 7 is lead by the flushing flow arrangement 6, such as by transmission of a flow channel ⁇ a existing at a center of the drilling unit 3 or correspondingly, to the first and/or the second drilling means 4, 5, such as to the drilling surface/surfaces of the first and/or the second frame parts 4a, 5a, and furthermore by guidance of flow grooves 6b or like in the frame part/parts 4a, 5a radially at an outer periphery of the drilling device 1 in order to assist drifting thereof to outside of the casing part 2.
  • the second drilling means 5 comprise a reamer that is rotationally symmetrical and that has an essentially continuing drilling surface radially, when viewed in a cross-section perpendicular to a longitudinal direction s of the drilling unit 3.
  • the second drilling means 5 comprise a reamer that operates on eccentric principle, being non- symmetrical and that opens radially outwards for drilling.
  • the casing shoe can be placed in an integrated manner at the end of the casing part etc. Furthermore e.g. on the principle shown in figure 1, it is possible to complement the flushing flow arrangement e.g. by a flow pipe connected to the space between the casing part and the drilling unit e.g. in order to keep the space surrounding the drilling unit empty, and/or by a flushing assembly that greases the joint between the drilling means and the casing shoe.

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 procédé et sur un appareil de forage pour forage en fond de trou, le forage étant effectué par un appareil de forage ayant un dispositif de forage (1) qui comporte une partie tubage (2) comprenant une unité de forage agencée essentiellement à l'intérieur de celle-ci (3) au moins lors d'une situation de forage, l'appareil de forage comportant, à sa tête de forage, au moins des premiers moyens de forage (4) pour forer un trou central, un second moyen de forage (5) pour aléser le trou central pour la partie de boîtier (2), un ensemble d'écoulement de rinçage (6) pour amener les déchets de forage, par influence du milieu de rinçage, à l'extérieur du dispositif de forage, au moins partiellement vers le haut le long de la surface externe du dispositif de forage (1), et un dispositif de battage actionné par un milieu sous pression, pour transmettre un mouvement de battage (t4) aux moyens de forage (4, 5) pour le forage. Les premiers moyens de forage (4) sont couplés au second moyen de forage (5) d'une part par transmission d'énergie dans le but d'établir une coopération entre ceux-ci au moins lors d'une situation de forage avec le second moyen de forage (5) pour un mouvement de rotation (w4), un mouvement d'avance (z4) et le mouvement de battage (t4), et, d'autre part, de manière amovible dans le but de permettre le retrait de ceux-ci du trou. Pour produire le mouvement de battage (t4), un dispositif de battage (7) est utilisé, lequel dispositif de battage (7) est actionné essentiellement par un milieu sous pression à base d'eau, grâce à quoi au moins une partie du milieu sous pression à base d'eau actionnant le dispositif de battage (7) est utilisée en outre dans le forage comme milieu de rinçage.
PCT/FI2009/050700 2008-10-13 2009-09-03 Procédé et appareil de forage pour forage en fond de trou Ceased WO2010043757A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US13/123,987 US20110198129A1 (en) 2008-10-13 2009-09-03 Method and drilling apparatus for down-the-hole drilling
EP09820305A EP2337918A1 (fr) 2008-10-13 2009-09-03 Procede et appareil de forage pour forage en fond de trou

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI20085961 2008-10-13
FI20085961A FI20085961A0 (fi) 2008-10-13 2008-10-13 Menetelmä ja porauslaitteisto uppoporaukseen

Publications (1)

Publication Number Publication Date
WO2010043757A1 true WO2010043757A1 (fr) 2010-04-22

Family

ID=39924606

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/FI2009/050700 Ceased WO2010043757A1 (fr) 2008-10-13 2009-09-03 Procédé et appareil de forage pour forage en fond de trou

Country Status (4)

Country Link
US (1) US20110198129A1 (fr)
EP (1) EP2337918A1 (fr)
FI (1) FI20085961A0 (fr)
WO (1) WO2010043757A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012038583A1 (fr) * 2010-09-23 2012-03-29 Oy Atlas Copco Rotex Ab Procédé et appareil pour forage de fond de trou
CN102966305A (zh) * 2012-12-11 2013-03-13 闫铁 一种近钻头周向谐振冲击器
WO2012069858A3 (fr) * 2010-11-26 2013-11-07 Philip Head Outil de forage de fond de trou et ensemble palier
CN103628815A (zh) * 2013-11-20 2014-03-12 中国石油集团渤海钻探工程有限公司 一种近钻头扭转、振荡耦合冲击器

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI20095046A0 (fi) * 2009-01-21 2009-01-21 Atlas Copco Rotex Ab Oy Menetelmä ja laitteisto uppoporaukseen
JP6562831B2 (ja) * 2015-12-16 2019-08-21 Ｊｆｅシビル株式会社 土砂除去バケット及び土砂の除去方法
CN113529704B (zh) * 2021-06-23 2022-11-18 深圳市工勘岩土集团有限公司 松散填石边坡锚索偏心潜孔锤全套管跟管成锚施工方法

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5107944A (en) * 1987-07-14 1992-04-28 Per Gustafsson Down hole drills using spent driving fluid for flushing purposes
SE467886B (sv) * 1990-01-17 1992-09-28 Uniroc Ab Rymmare till borrverktyg foer slaaende och roterande borrning
WO1993020322A1 (fr) * 1992-04-01 1993-10-14 Sds Pty. Ltd. Marteau perforateur de fond de puits, a commande hydraulique
WO1995034740A1 (fr) * 1994-06-10 1995-12-21 Ilomaeki Valto Appareil de forage
US20060027399A1 (en) * 2004-08-05 2006-02-09 Holte Ardis L Drill bit assembly
SE530357C2 (sv) * 2007-05-21 2008-05-13 Svenska Borr Ab Anordning vid utförande av borrning i jordlager och berg

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3227230A (en) * 1961-02-21 1966-01-04 Atlas Copco Ab Combination ring and central drill bit drilling equipment
CH524755A (de) * 1969-05-30 1972-06-30 Klemm Bohrtech Uberlagerungsbohrgerät und Verfahren zu seinem Betrieb
SE421551B (sv) * 1980-03-26 1982-01-04 Sandvik Ab Borrverktyg for rotations- och/eller slagborrning
SE8901199L (sv) * 1989-04-05 1990-10-06 Uniroc Ab Excentrisk borrkrona
FI95618C (fi) * 1992-12-03 1998-09-03 Jorma Jaervelae Porauslaitteisto

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5107944A (en) * 1987-07-14 1992-04-28 Per Gustafsson Down hole drills using spent driving fluid for flushing purposes
SE467886B (sv) * 1990-01-17 1992-09-28 Uniroc Ab Rymmare till borrverktyg foer slaaende och roterande borrning
WO1993020322A1 (fr) * 1992-04-01 1993-10-14 Sds Pty. Ltd. Marteau perforateur de fond de puits, a commande hydraulique
WO1995034740A1 (fr) * 1994-06-10 1995-12-21 Ilomaeki Valto Appareil de forage
US20060027399A1 (en) * 2004-08-05 2006-02-09 Holte Ardis L Drill bit assembly
SE530357C2 (sv) * 2007-05-21 2008-05-13 Svenska Borr Ab Anordning vid utförande av borrning i jordlager och berg

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012038583A1 (fr) * 2010-09-23 2012-03-29 Oy Atlas Copco Rotex Ab Procédé et appareil pour forage de fond de trou
WO2012069858A3 (fr) * 2010-11-26 2013-11-07 Philip Head Outil de forage de fond de trou et ensemble palier
CN102966305A (zh) * 2012-12-11 2013-03-13 闫铁 一种近钻头周向谐振冲击器
CN102966305B (zh) * 2012-12-11 2014-12-31 闫铁 一种近钻头周向谐振冲击器
CN103628815A (zh) * 2013-11-20 2014-03-12 中国石油集团渤海钻探工程有限公司 一种近钻头扭转、振荡耦合冲击器

Also Published As

Publication number Publication date
FI20085961A0 (fi) 2008-10-13
US20110198129A1 (en) 2011-08-18
EP2337918A1 (fr) 2011-06-29

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