EP0909362B1 - Outil de forage pour procede de circulation inverse - Google Patents

Outil de forage pour procede de circulation inverse Download PDF

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Publication number
EP0909362B1
EP0909362B1 EP97924882A EP97924882A EP0909362B1 EP 0909362 B1 EP0909362 B1 EP 0909362B1 EP 97924882 A EP97924882 A EP 97924882A EP 97924882 A EP97924882 A EP 97924882A EP 0909362 B1 EP0909362 B1 EP 0909362B1
Authority
EP
European Patent Office
Prior art keywords
boring tool
passage
channel
tool according
flushing liquid
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.)
Expired - Lifetime
Application number
EP97924882A
Other languages
German (de)
English (en)
Other versions
EP0909362A1 (fr
Inventor
Fritz Tibussek
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.)
Mhwirth GmbH
Original Assignee
Wirth Maschinen und Bohrgeraete Fabrik GmbH
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 Wirth Maschinen und Bohrgeraete Fabrik GmbH filed Critical Wirth Maschinen und Bohrgeraete Fabrik GmbH
Publication of EP0909362A1 publication Critical patent/EP0909362A1/fr
Application granted granted Critical
Publication of EP0909362B1 publication Critical patent/EP0909362B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • E21B10/08—Roller bits
    • E21B10/18—Roller 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
    • E21B10/02—Core bits
    • E21B10/04—Core bits with core destroying means
    • 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
    • E21B10/02—Core bits
    • E21B10/06—Roller core 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
    • E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
    • E21B21/12—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor using drilling pipes with plural fluid passages, e.g. closed circulation systems
    • 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
    • E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
    • E21B21/14—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor using liquids and gases, e.g. foams
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D1/00—Sinking shafts
    • E21D1/03—Sinking shafts mechanically, e.g. by loading shovels or loading buckets, scraping devices, conveying screws
    • E21D1/06—Sinking shafts mechanically, e.g. by loading shovels or loading buckets, scraping devices, conveying screws with shaft-boring cutters

Definitions

  • the invention relates to a device for bringing down of drilling in the ground with discharge of the drilling material according to the air lifting method according to the generic term of Claim 1.
  • the material detached from the cutting elements becomes sucked through a suction opening from the sole, wherein the suction opening centrally on the underside of the tool head or, for example if the tool head is a Pilot tip, at about 1/4 of the diameter be arranged from the middle offset position can.
  • Suction it is not meant that a Suction pump should be installed.
  • a pump is only in the game to inject high pressure air over the drilling tool press the conveyor channel.
  • the hydrostatic pressure on however, the bottom of the drill hole is larger than above in the Conveyor channel in the mixture of water present there, Drilled material and air. Funding actually takes place through the higher pressure in the area of the drilling base, but at least there is a lower pressure in and in the delivery channel in this sense a confluence with a lower area Pressure is used to simplify the expression of "suction" spoken.
  • the suction openings are usually circular or oval executed.
  • some known drilling tools instead of one, several suction openings, distributed over the Effective area of the drilling tool, arranged around a suction the material as close as possible to each cutting element to be able to achieve. This is necessary so the drilling material detached from the cutting elements if possible conveyed away from the bottom of the drill immediately after loosening and the drilling tool is not ineffective on one layer dissolved drillings that have remained on the bottom of the drill is working.
  • the latter arrangement of the suction openings on several radially differently arranged Places requires complex cable routing for connection of the suction openings to the central delivery channel inner cross-section of the drill pipe.
  • a drilling tool is known from US Pat. No. 3,951,220. in which the suction openings are spiral are, so that a flow directed from the outside inwards the rinsing liquid is generated.
  • the disadvantage of this Drilling tool that the flow is not sufficient, larger Take lots of loosened drillings with you.
  • the object of the invention is to provide a drilling tool to create efficient suction behavior with which material almost completely removed from the cutting elements is sucked off the bottom of the borehole without it a repeated engagement of the cutting elements with the already released material is coming.
  • the active surface of the drilling tool head one radial to the center of the drill head cross flow of the rinsing liquid produced whose flow rate is high enough that pick up and take loose material. Doing so achieves a lifting effect by means of the flow rate, which the suction behavior on the active surface and thus the Overall effectiveness of air lifting process increases.
  • the suction opening is as an elongated, downward open, radial extending channel formed in which a cross flow from the outside to the center to the delivery channel of the drill pipe is generated.
  • the suction opening is in the upper wall of which an opening is arranged through which
  • liquid should come in from the area of the drilling base can, so that a higher speed of cross flow is achievable.
  • the channel is preferably closed. Through the to Scope of the channel is closed avoided the cross flow, especially in soft rock causes a "decalcification" of the borehole (claim 4).
  • the duct-shaped suction opening is in operation during each revolution over the entire Cross section of the bottom of the borehole, and the drilled hole Material is from the cross flow through the inner cross section of the drill pipe conveyed to the surface.
  • an upwardly extending, tubular element may be provided.
  • Means can be provided for the flushing medium accelerated at the opening and feed the cross flow to reinforce.
  • Channel flow-influencing components are arranged, and / or the wall surfaces of the channel are helical be so that in the cross flow a turbulent Flow behavior can be achieved.
  • Air line-fed nozzles can be arranged, which has the lifting effect of the dissolved material by whirling it up strengthen.
  • At least one additional supply line for the rinsing liquid and / or an additional supply line for air along the drill pipe extend.
  • the tool head must be designed such that drilling out a support tube is possible.
  • the drilling tool 100 shown in FIG. 1 has one barrel-shaped housing 1 of a diameter that each depending on the drilling diameter can be a few meters.
  • a tool head 10 At the Underside of the housing 1 is a tool head 10 the same Attached diameter, on the underside 20 as hard metal inserts trained cutting elements 2 arranged in this way are that the drilling tool 100 has a flat, dash-dotted effective area 3 has. about complete the active surface of distributed roller drilling tools 6 the cutting elements 2.
  • the tool head 10 has on it Top of a connection plate 21 on the one with a connecting flange 4 connectable to the underside of the housing 1 is.
  • the housing 1 is in turn with a hollow drill pipe 50 connected, which by a not shown, rotary drive engaging at its upper end is rotatable about the drilling axis A.
  • the inside cross section of the drill pipe 50 forms a delivery channel 51 and serves to discharge the drilling material by the air lifting method.
  • the delivery channel 51 of the drill pipe 50 extends coaxial to the drilling axis A down to one to the drilling axis A perpendicular flange connection 24 approximately in half the height of the housing 1 and then opens into an inside of the tool head 10 arranged slightly obliquely Suction pipe 11, which from the middle (in the amount of Flange connection 24) in the embodiment below an angle of about 20 ° in a passage 22 in the upper connection plate 21 of the drill head 10 opens.
  • the Passage 22 is located with a radial channel 5 trained suction port in connection and is close located along drilling axis A.
  • the distance of the drilling axis A adjacent end of the channel 5 is by the dimensions of the Recording 7 'one in the drilling axis A of the drill head 10 downward projecting pilot tip 7 determined.
  • the Channel 5 has a U-shaped cross section open at the bottom, extends radially out of the center and is on the circumferential edge of the tool head 10 from there Housing wall 8 closed.
  • 3 in cross section Channel 5 shown has a constant length Cross-section.
  • the open Bottom of the channel 5 a grid 9 attached to the Limit the size of the chunks entering channel 5.
  • the channel 5 is only at one point, in the circumferential direction seen on the underside 20 of the tool head 10 arranged, as can be seen more clearly in Fig. 2.
  • the conveyor channel 51 of the drill pipe is in operation 50 and the suction pipe 11 opening into the channel 5 with the Flushing liquid, usually water, filled.
  • the Flushing liquid usually water
  • Over a extending along the drill string 50 52 becomes air L through an injection nozzle 53 at the lower end of the feed channel 51 is blown upwards into the feed channel 51. Blowing in the air L causes the pressure difference between the bottom of the borehole and in the drill string 50. Following the pressure drop, the liquid from the High pressure area at the bottom of the borehole in the area lower pressure driven into the delivery channel 51. Due to the strong current that is created by the cutting elements 20 and the roller drills 6 on the Drilled hole bottom loosened and crushed drillings and through the delivery channel 51 as mixture B of rinsing liquid F and drilling material B conveyed to the surface.
  • nozzles 15 are provided, with which also larger chunks of material 16 by the cross flow Q are not easily carried away, are raised, so that with the cross flow Q in the delivery channel 5 and Surface can be transported.
  • Fig. 2 are preferably several such along the channel 5 Nozzles 15 'arranged to provide an evenly distributed, additional To achieve whirling up.
  • the nozzles 15 are fed with air or water and arranged in such a way that the direction of radiation of the nozzles 15 in the direction of rotation D of the drilling tool 100.
  • nozzles 15 can be within of the channel 5 also flow-influencing components like guide surfaces 17 (Fig. 3) with which a swirl is introduced into the cross flow, which Lifting the rocks lying on the bottom of the borehole 14 16 further strengthened.
  • the Wall 18 of the channel 5 with a screw or snail-shaped Relief, indentations or grooves to have such an additional twist within to achieve the cross flow Q.
  • material sawing material
  • the suction pipe 111 is designed as a pipe bend which is in the longitudinal direction of the channel 105, i.e. without abrupt redirection into channel 105. Through the other construction hinder the suction pipe 111 and the pilot tip 107 does not.
  • the suction pipe goes at the upper end at the level of the flange connection 124 in the drill pipe 150 over.
  • Opening 113 is welded to a pipe section 120 which extends upwards and inwards at the upper end of the tube, i.e. away from the borehole wall closing the inlet opening 122 by falling or to prevent material slipping into the borehole.
  • the embodiments shown show a "free" Sucking in the rinsing liquid at the radially outer end of the Channel 5.105 from above.
  • a cross flow with increased Speed can be achieved within the channel 5,105 thereby the suction efficiency and thus the effectiveness of the drilling tool 100, 200 can be further increased overall are.
  • drilling tools shown in FIGS. 1 and 5 100 and 300 are also for drilling from support tubes suitable out.

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  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mechanical Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • Earth Drilling (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)

Abstract

L'invention concerne un procédé de forage de sondages dans des terrains, avec extraction du produit issu du forage par circulation inverse, selon lequel on utilise un outil de forage (100, 200, 300) comportant une tête de sondage (10, 110, 210) munie sur la face inférieure d'éléments tranchants et à la face supérieure de laquelle est raccordée une tige de forage (50; 150; 250) avec un canal de refoulement (51) intérieur et depuis la face inférieure de laquelle est évacué à travers le canal de refoulement le produit issu du forage, mélangé au liquide de rinçage. Sur la face inférieure de la tête (10, 110, 210) de l'outil de forage est produit un écoulement transversal (Q) du liquide de rinçage à grande vitesse de fluage, s'étendant vers l'intérieur dans le sens radial et destiné à entraîner le produit issu du forage, dans un canal radial communiquant avec le canal de refoulement (51).

Claims (9)

  1. Outil de forage (100, 200, 300) pour forer des trous dans la terre avec extraction du produit de forage par le procédé de circulation inverse selon lequel le liquide de rinçage chargé du produit de forage est refoulé à la surface par de l'air soufflé, comportant une tête d'outil (10, 110, 210) dont la face supérieure est reliée à une tige de forage (50, 150, 250) creusée d'un canal interne de refoulement (51) pour évacuer le produit de forage, tandis que la face inférieure (1) présente, répartis sur sa section, des éléments de coupe (2, 6 ; 102, 106 ; 206) et, pour aspirer le produit de forage mélangé au liquide de rinçage au moins une ouverture d'aspiration reliée au canal de refoulement (51), ainsi qu'au moins une conduite d'amenée d'air,
    caractérisé en ce que
    l'ouverture d'aspiration a la forme d'un canal (5 ; 105 ; 205) ouvert vers le bas et s'étendant radialement, dont l'extrémité située vers le centre est en liaison fluide avec le canal de refoulement (51), tandis qu'à l'extrémité externe de ce canal (5 ; 105 ; 205), la paroi supérieure de celui-ci est percée d'une ouverture (13 ; 113 ; 213) servant d'entrée au fluide de rinçage propre.
  2. Outil de forage selon la revendication 1,
    caractérisé en ce que
    l'extrémité externe du canal (5 ; 105 ; 205) est obturée radialement.
  3. Outil de forage selon la revendication 2,
    caractérisé en ce qu'
    à l'ouverture (113) est raccordé un élément tubulaire (120) dirigé vers le haut.
  4. Outil de forage selon l'une quelconque des revendications 1 à 3,
    caractérisé en ce que
    le liquide de rinçage peut être amené avec accélération à l'ouverture (13; 113; 213).
  5. Outil de forage selon l'une quelconque des revendications 1 à 4,
    caractérisé en ce que
    dans un canal (5 ; 105 ; 205) sont montés des composants (17) exerçant une influence sur l'écoulement.
  6. Outil de forage selon l'une quelconque des revendications 1 à 5,
    caractérisé en ce que
    le canal (5 ; 105 ; 205) est entouré de parois (18) qui présentent sur le côté tourné vers l'intérieur du canal, un relief influençant l'écoulement.
  7. Outil de forage selon l'une quelconque des revendications 1 à 6,
    caractérisé en ce que
    pour faire tourbillonner le matériau détaché, des tuyères (15) alimentées en air ou en liquide de rinçage et dirigées essentiellement vers le bas, sont montée d'un côté au moins du canal (5 ; 105 ; 205).
  8. Outil de forage selon l'une quelconque des revendications 1 à 7,
    caractérisé en ce que
    le long de la tige de forage court au moins une conduite d'amenée (52) supplémentaire pour l'air et/ou une conduite supplémentaire d'amenée du fluide de rinçage.
  9. Outil de forage selon l'une quelconque des revendications 1 à 8,
    caractérisé en ce que
    la tête d'outil (100, 300) est conçue pour forer en sortant d'un tube de protection.
EP97924882A 1996-07-02 1997-05-14 Outil de forage pour procede de circulation inverse Expired - Lifetime EP0909362B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19626591A DE19626591C1 (de) 1996-07-02 1996-07-02 Verfahren zum Niederbringen von Bohrungen im Erdreich unter Austrag des Bohrgutes nach dem Lufthebeverfahren und Bohrwerkzeug zur Anwendung des Verfahrens
DE19626591 1996-07-02
PCT/DE1997/000966 WO1998000624A1 (fr) 1996-07-02 1997-05-14 Outil de forage pour procede de circulation inverse

Publications (2)

Publication Number Publication Date
EP0909362A1 EP0909362A1 (fr) 1999-04-21
EP0909362B1 true EP0909362B1 (fr) 2002-03-13

Family

ID=7798701

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97924882A Expired - Lifetime EP0909362B1 (fr) 1996-07-02 1997-05-14 Outil de forage pour procede de circulation inverse

Country Status (7)

Country Link
US (1) US6405812B1 (fr)
EP (1) EP0909362B1 (fr)
JP (1) JP3260766B2 (fr)
KR (1) KR100311925B1 (fr)
AU (1) AU3023897A (fr)
DE (2) DE19626591C1 (fr)
WO (1) WO1998000624A1 (fr)

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* Cited by examiner, † Cited by third party
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US7233978B2 (en) 1998-07-08 2007-06-19 Econnectix, Llc Method and apparatus for managing location information in a network separate from the data to which the location information pertains
DE19849028C2 (de) * 1998-10-23 2002-11-07 Bauer Maschinen Gmbh Absperrvorrichtung zum Absperren von Spüldruckluft beim Spülbohren
AT410356B (de) * 2000-05-17 2003-04-25 Voest Alpine Bergtechnik Einrichtung zum abdichten eines bohrloches und zum ausbringen von bohrklein bzw. gelöstem abbaumaterial
US7055627B2 (en) * 2002-11-22 2006-06-06 Baker Hughes Incorporated Wellbore fluid circulation system and method
JP5607944B2 (ja) * 2010-02-10 2014-10-15 成幸利根株式会社 掘削ヘッド
WO2016142910A1 (fr) 2015-03-12 2016-09-15 Palmieri S.P.A. Tête d'excavation
CN105041255A (zh) * 2015-08-11 2015-11-11 中煤科工集团西安研究院有限公司 打捞钻孔内细碎落物的孔底组合钻具及其打捞方法
DE102016118665A1 (de) 2016-09-30 2018-04-05 Mhwirth Gmbh Verfahren und eine Vorrichtung zum Abbau von Methanhydrat
JP7014784B2 (ja) 2016-09-30 2022-02-01 エム・ハー・ヴィアト ゲゼルシャフト ミット ベシュレンクテル ハフツング メタンハイドレートを採掘する方法、システムおよび装置、ならびにメタンハイドレートからメタンを回収する方法およびシステム
DE102019120019A1 (de) 2019-07-24 2021-01-28 Herrenknecht Ag Bohrkopf für das Erstellen einer Bohrung im Boden
CA3160587A1 (fr) * 2019-12-04 2021-06-10 Patrick RENNKAMP Dispositif de foncage d'un trou de forage vertical
AU2022343024A1 (en) * 2021-09-10 2024-05-02 Optima Mining Systems Pty Ltd A cutting head assembly
EP4215715A1 (fr) * 2022-01-21 2023-07-26 BAUER Spezialtiefbau GmbH Foreuse à godet et procédé de création d'un trou de forage

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US3917326A (en) 1973-11-12 1975-11-04 Wasteland Reclamation Corp Induced recovery of particles from sub-surface formations
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US4200160A (en) 1978-03-13 1980-04-29 Smith International, Inc. Sweep pickup for a big hole bit
US4296824A (en) 1978-06-29 1981-10-27 Hughes Tool Company Nozzle placement in large diameter earth boring bits
US4195700A (en) * 1978-08-14 1980-04-01 Smith International, Inc. Large diameter bit with sweep pickup
US4516633A (en) * 1981-09-18 1985-05-14 Santa Fe International Corporation Blind shaft drilling
US4363367A (en) 1981-10-26 1982-12-14 Smith International, Inc. Large diameter drill bit
US4448269A (en) * 1981-10-27 1984-05-15 Hitachi Construction Machinery Co., Ltd. Cutter head for pit-boring machine
DE3228106C2 (de) * 1982-07-28 1985-04-25 Salzgitter Maschinen Und Anlagen Ag, 3320 Salzgitter Vorrichtung für das Erdbohren mit Hilfe des Lufthebeverfahrens
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CA2041000C (fr) 1990-04-26 2005-07-12 John Elsby Manchon de transmission pour la commande d'un marteau fond-de-trou

Also Published As

Publication number Publication date
KR100311925B1 (ko) 2002-02-19
DE19626591C1 (de) 1998-04-16
KR20000022364A (ko) 2000-04-25
WO1998000624A1 (fr) 1998-01-08
DE59706615D1 (de) 2002-04-18
EP0909362A1 (fr) 1999-04-21
JP2000500201A (ja) 2000-01-11
JP3260766B2 (ja) 2002-02-25
AU3023897A (en) 1998-01-21
US6405812B1 (en) 2002-06-18

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