WO2005061843A1 - Dispositif de forage - Google Patents

Dispositif de forage Download PDF

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Publication number
WO2005061843A1
WO2005061843A1 PCT/EP2004/014612 EP2004014612W WO2005061843A1 WO 2005061843 A1 WO2005061843 A1 WO 2005061843A1 EP 2004014612 W EP2004014612 W EP 2004014612W WO 2005061843 A1 WO2005061843 A1 WO 2005061843A1
Authority
WO
WIPO (PCT)
Prior art keywords
drilling device
sealing
borehole
drill pipe
disk
Prior art date
Application number
PCT/EP2004/014612
Other languages
German (de)
English (en)
Inventor
Franz-Josef Blickhan
Original Assignee
Blickhan, Elisabeth, Charlotte
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 Blickhan, Elisabeth, Charlotte filed Critical Blickhan, Elisabeth, Charlotte
Priority to EP04804208.9A priority Critical patent/EP1704297B8/fr
Publication of WO2005061843A1 publication Critical patent/WO2005061843A1/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
    • 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

Definitions

  • the invention relates to a drilling device with a
  • Senkhammer drill heads are used for well drilling and other deep hole drilling in rock and stone.
  • the sink hammer is powered by compressed air supplied through the drill pipe. The compressed air emerges at the percussion drill bit and conveys the resulting cuttings upwards.
  • a central conveying channel of the drill pipe is used to convey the cuttings through the compressed air flowing upwards.
  • an air channel is arranged in the drill pipe through which the compressed air is supplied.
  • the central conveyor channel opens into a side inlet opening. In the area of the side
  • apron which is open at the bottom and which receives the cuttings which have been knocked loose by the hammer of the drill head so that it can be conveyed upwards.
  • the borehole annulus between the drill pipe and the borehole wall is sealed from the atmosphere by a borehole seal.
  • the borehole seal is formed by a casing pipe lining the borehole opening and an annular cover, the inner edge of which is designed as a sliding seal which sealingly surrounds the circumference of the drill pipe.
  • the pressure generated by the compressed air supply in the borehole is required to convey the cuttings upwards in the central production channel.
  • the borehole wall must be sealed, because otherwise there is a risk that if the sealing is insufficient, the required delivery pressure will not be available in the central delivery channel. It proves to be disadvantageous here that the required pressure must be maintained in the entire borehole up to the borehole seal. This leads to high energy consumption and a reduction in production capacity, especially if the borehole itself is not sufficiently tight on the side.
  • the drill hole seal must be removed.
  • the borehole seal is an axially fixed, rotatably mounted, annular sealing disk on the drill pipe, which has at least one flexible sealing lip on its circumference.
  • the space to be pressurized remains unchanged during the entire drilling process, regardless of the respective drilling depth.
  • the sealing disk has a plurality of sealing lips on the circumference one above the other. This results in a significant increase in the sealing effect compared to a single sealing lip.
  • the sealing disk has a central slide bearing bush on its inner circumference, which is supported on an upper support ring connected to the drill pipe.
  • the rotation of the drill pipe is not hindered by the bearing of the sealing washer over the central plain bearing bush.
  • the seal designed as a pivot bearing can be designed in such a way that it develops a high sealing effect with relatively little friction. This is from Significant advantage over the known borehole seal, in which the entire drill pipe must be passed through the sealing surface when sunk, so that irregularities in the outer surface of the drill pipe can lead to a reduction in the sealing effect and / or damage to the sealing surface on the borehole seal.
  • the sealing washer seals directly against the borehole wall with its at least one flexible sealing lip or that a lining pipe is carried along when the borehole sinks on the borehole wall, against which the sealing washer seals.
  • This measure is particularly advantageous if the rock is porous or has gaps and is therefore not or not very suitable for maintaining the pressure.
  • Fig. 1 in a simplified longitudinal section a drilling device in a borehole
  • Drilling device used sealing washer and the associated drill rod section.
  • the drilling device shown in the drawing has a drill pipe which has a central delivery channel 2 (FIG. 2) and a surrounding air channel 3.
  • a drill hammer 5 is connected to the drill pipe 1 via a connecting piece 4, the percussion drill bit 6 of which at the deepest point of the borehole 7 loosens rock which is transported as drilling cuttings upwards.
  • the lowering hammer drill head 5 is supplied with compressed air for driving its percussion drill bit 6, which is supplied through the air duct 3.
  • a conveying channel section 8 runs obliquely downwards from the central conveying channel 2 of the drill pipe 1 to a lateral inlet opening 9.
  • a downwardly open apron 10 which is formed by a downwardly open tube which is fastened to the connecting piece 4 and is offset eccentrically with respect to the countersink drill head 5 to the side of the inlet opening 9.
  • an inflow opening 11 is formed on the side of this inlet opening 9 at a short distance above the percussion drill bit 6, which is connected via the conveying channel section 8 to the conveying channel 2 in the drill pipe 1.
  • annular sealing disc 12 is arranged, which is rotatably but non-displaceably mounted on the drill string 1 and has a plurality of flexible sealing lips 13 on its circumference, which seal on the borehole wall 14 or on one at the Sinking the borehole on the lining pipe 15 carried along the borehole wall (only indicated on the right in FIG. 1 with dashed lines) seals.
  • the flexible sealing lips 13 can also fold over in the sealing area in order to achieve an effective seal.
  • the sealing disk 12 has a central slide bearing bush 16 on its inner circumference, which is supported on an upper support ring 17 connected to the drill pipe 1.
  • the sealing disk 12 has a plurality of rigid ring disks 18 stacked one above the other, between each of which a rubber-elastic ring disk 19 is arranged, the circumferential edge of which extends beyond the rigid ring disks 18 and forms the sealing lip 13.
  • the rigid annular disks 18 are connected to one another by screws 20, 21. Near their inner edge, the rigid sealing disks 18 are connected to one another by screws 21 and to an upper flange 22 of the slide bearing bush 16.
  • the support ring 17 has a mounting hole 23 through which the screws 21 arranged on the inner edge of the rigid annular disks 18 are individually accessible one after the other after rotation of the sealing disk 12.
  • the screws 21 are screwed into a lower ring 24, which presses all the disks of the sealing disk 12 together on the inner edge.
  • the central plain bearing bush 16 is rotatably received between the upper support ring 17 and a lower support ring 25 which is attached to the drill pipe 1.
  • the compressed air which is fed to the Senkhammer drill head through the air duct 3 and drives it and exits from the underside of the drill head, conveys the resulting cuttings up through the inlet opening 11 of the apron 10, the conveying duct section 8 and the central conveying duct 2 , At the same time, an increased pressure is built up in a borehole annular space section 26 below the sealing disk 12, which pressure is maintained by the sealing effect of the sealing disk 12. When the drilling head sinks further, the sealing disk 12 is carried along.

Landscapes

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

Abstract

L'invention concerne un dispositif de forage pourvu d'une tige de forage (1) qui présente un canal de refoulement central (2) et un canal d'arrivée d'air et qui comporte une tête de forage à marteau fond de trou (5). Un espace annulaire de trou de forage formé entre la tige de forage (1) et la paroi de trou de forage est étanchéifié vis-à-vis de l'atmosphère au moyen d'un élément d'étanchéité de trou de forage. Cet élément d'étanchéité se présente sous la forme d'un disque d'étanchéité (12) qui est monté de manière rotative et fixé axialement sur la tige de forage (1) et qui comporte, à sa périphérie, plusieurs lèvres d'étanchéité (13) superposées et, au niveau de sa périphérie intérieure, un coussinet lisse central (16) qui prend appui sur une bague d'appui (17) supérieure, raccordée à la tige de forage (1). Le disque d'étanchéité (12) présente une pluralité d'éléments annulaires (18) rigides empilés, entre lesquels se trouve respectivement un élément annulaire (19) présentant l'élasticité du caoutchouc, dont le bord périphérique faisant saillie par rapport aux éléments annulaires (18) rigides forme la lèvre d'étanchéité qui réalise une étanchéité par rapport au cuvelage (15) entraîné lors du creusement du trou le long de la paroi (14).
PCT/EP2004/014612 2003-12-22 2004-12-22 Dispositif de forage WO2005061843A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP04804208.9A EP1704297B8 (fr) 2003-12-22 2004-12-22 Dispositif de forage

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10361080.4 2003-12-22
DE2003161080 DE10361080A1 (de) 2003-12-22 2003-12-22 Bohrvorrichtung

Publications (1)

Publication Number Publication Date
WO2005061843A1 true WO2005061843A1 (fr) 2005-07-07

Family

ID=34706550

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2004/014612 WO2005061843A1 (fr) 2003-12-22 2004-12-22 Dispositif de forage

Country Status (3)

Country Link
EP (1) EP1704297B8 (fr)
DE (1) DE10361080A1 (fr)
WO (1) WO2005061843A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1731708A1 (fr) * 2005-06-10 2006-12-13 Geomechanik Wasser- und Umwelttechnik GmbH Appareil de forage à marteau à percussion et procédé associé
CN113323581A (zh) * 2021-05-30 2021-08-31 徐州基桩工程公司 气动潜孔锤排渣装置的结构

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005026921A1 (de) * 2005-06-10 2006-12-21 Geomechanik Wasser- Und Umwelttechnik Gmbh Senkhammer-Bohrvorrichtung und -verfahren
DE102007043621B4 (de) * 2007-09-13 2013-03-28 Stump Spezialtiefbau Gmbh Bohrungsabdichtung

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1472555A (en) * 1921-08-13 1923-10-30 Erd V Crowell Oil or gas well
US4057118A (en) 1975-10-02 1977-11-08 Walker-Neer Manufacturing Co., Inc. Bit packer for dual tube drilling
US4321975A (en) * 1980-06-02 1982-03-30 Dyer Ronald S Slurry diverter
FR2496160A1 (fr) 1980-12-11 1982-06-18 Lamothe Andre Raccord etanche pour l'utilisation des outils conventionnels de forage en circulation inverse
US4657092A (en) 1985-07-17 1987-04-14 J & F Oil Tools, Inc. Circulation reversing tool
FR2597150A1 (fr) 1986-04-11 1987-10-16 Boniface Andre Perfectionnement aux dispositifs de forage des sols comprenant un outil de forage fixe a l'extremite d'une tige formee de deux tubes concentriques
DE8902189U1 (fr) * 1989-02-24 1989-05-03 Turmag Turbo-Maschinen-Ag Nuesse & Graefer, 4322 Sprockhoevel, De
DE4225806C1 (de) 1992-08-05 1993-12-16 Klemm Bohrtech Bohreinsatz für ein Großlochbohrgerät
EP0690953B1 (fr) 1993-04-02 1997-10-15 Franz Blickhan Appareil de forage avec train de tiges de forage et tete de forage a marteau a percussion

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1472555A (en) * 1921-08-13 1923-10-30 Erd V Crowell Oil or gas well
US4057118A (en) 1975-10-02 1977-11-08 Walker-Neer Manufacturing Co., Inc. Bit packer for dual tube drilling
US4321975A (en) * 1980-06-02 1982-03-30 Dyer Ronald S Slurry diverter
FR2496160A1 (fr) 1980-12-11 1982-06-18 Lamothe Andre Raccord etanche pour l'utilisation des outils conventionnels de forage en circulation inverse
US4657092A (en) 1985-07-17 1987-04-14 J & F Oil Tools, Inc. Circulation reversing tool
FR2597150A1 (fr) 1986-04-11 1987-10-16 Boniface Andre Perfectionnement aux dispositifs de forage des sols comprenant un outil de forage fixe a l'extremite d'une tige formee de deux tubes concentriques
DE8902189U1 (fr) * 1989-02-24 1989-05-03 Turmag Turbo-Maschinen-Ag Nuesse & Graefer, 4322 Sprockhoevel, De
DE4225806C1 (de) 1992-08-05 1993-12-16 Klemm Bohrtech Bohreinsatz für ein Großlochbohrgerät
EP0690953B1 (fr) 1993-04-02 1997-10-15 Franz Blickhan Appareil de forage avec train de tiges de forage et tete de forage a marteau a percussion

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1731708A1 (fr) * 2005-06-10 2006-12-13 Geomechanik Wasser- und Umwelttechnik GmbH Appareil de forage à marteau à percussion et procédé associé
WO2006131339A1 (fr) * 2005-06-10 2006-12-14 Geomechanik Wasser- Und Umwelttechnik Gmbh Dispositif de forage en percussion dans le puits et procede de forage de couverture
EA014437B1 (ru) * 2005-06-10 2010-12-30 Геомеханик Вассер- Унд Умвельттехник Гмбх Устройство для бурения с погружным пневмоударником и способ бурения по наносам
CN113323581A (zh) * 2021-05-30 2021-08-31 徐州基桩工程公司 气动潜孔锤排渣装置的结构

Also Published As

Publication number Publication date
EP1704297B8 (fr) 2014-06-18
DE10361080A1 (de) 2005-07-28
EP1704297B1 (fr) 2014-05-07
EP1704297A1 (fr) 2006-09-27

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