EP0563561A1 - Trépan de forage superposé - Google Patents

Trépan de forage superposé Download PDF

Info

Publication number: EP0563561A1
Authority: EP; European Patent Office
Prior art keywords: drill bit; swivel; recesses; bits; shaft
Prior art date: 1992-04-02
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.): Granted

Application number

EP93102651A

Other languages

German (de)

English (en)

Other versions

EP0563561B1 (fr

Inventor

Peter Dipl.-Ing. Rosenkranz

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.)

Boart Longyear GmbH and Co KG

Original Assignee

Boart HWF GmbH and Co KG Hartmetallwerkzeugfabrik

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.)

1992-04-02

Filing date

1993-02-19

Publication date

1993-10-06

1993-02-19 Application filed by Boart HWF GmbH and Co KG Hartmetallwerkzeugfabrik filed Critical Boart HWF GmbH and Co KG Hartmetallwerkzeugfabrik

1993-10-06 Publication of EP0563561A1 publication Critical patent/EP0563561A1/fr

1997-04-23 Application granted granted Critical

1997-04-23 Publication of EP0563561B1 publication Critical patent/EP0563561B1/fr

2013-02-19 Anticipated expiration legal-status Critical

Status Expired - Lifetime legal-status Critical Current

Images

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
- E21B10/26—Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers
- E21B10/32—Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers with expansible cutting tools
- E21B10/327—Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers with expansible cutting tools the cutter being pivoted about a longitudinal axis
- 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
- E21B10/38—Percussion drill 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
- E21B10/46—Drill bits characterised by wear resisting parts, e.g. diamond inserts
- E21B10/56—Button-type inserts
- 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
- E21B10/62—Drill bits characterised by parts, e.g. cutting elements, which are detachable or adjustable
- 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 present invention relates to a drill bit for overlay drilling with a head provided with hard metal pins or the like and a shaft carrying the head, the shaft having means for torsionally rigid connection to a driven inner pipe rod and wherein the drill bit has at least one flushing agent line.
drilling devices for overlay drilling are known, which are provided using a drilling fluid with an outer pipe string carrying a ring drill bit, an inner pipe string running in the outer pipe string and carrying a central full drill bit, and with a first rotary drive rotating the inner pipe string and a second rotary drive rotating the outer pipe string Both rods are mounted on a driven feed device (DE 29 24 393 C2).
eccentric drilling devices A known eccentric drilling device is described in DE 30 24 102 C2. In this case, the eccentric drill bit is eccentrically clamped at the end of the outer pipe string in order to obtain a drilling diameter which is larger than the outer diameter of the outer pipe string. After releasing the tension, the eccentric drill bit with the inner pipe rod can be pulled back through the outer pipe rod.
a bore hole is produced during the overlay drilling, the diameter of which is larger than the outside diameter of the piping to be introduced.
the piping is expediently designed as an outer pipe linkage of the respective drilling device, in the case of which the one described above as the first alternative Device the ring drill bit carried by the outer pipe rod is lost at least in the production of blind bores.
the distance between the outer pipe string and the actual pipe head must always be kept relatively small in order to prevent premature escalation in the borehole wall.
a suitable flushing agent such as air or a water / oil emulsion is discharged deep down - preferably through the inner pipe string.
the drilling mud consisting of cuttings and detergent, is flushed out of the borehole through the annular space between the inner pipe string and the outer pipe string.
the invention is therefore based on the object of designing and developing a drill bit of the type mentioned at the outset in such a way that the drill bit, in particular for replacement, is always removed from the borehole and a large overcut can nevertheless be achieved.
the head is symmetrical over a plurality Has circumferentially distributed recesses and that swivel bits are arranged in the recesses such that they come to lie within the drill bit diameter in the swiveled-in state and project in the swung-out state by a predetermined amount beyond the drill bit diameter.
the annular space required for the piping around the actual drill bit can also be drilled out by the pivoted-out swivel bits. Due to the pivotability, the entire drill bit with the swiveled-in swivel bits can still be removed from the borehole through the outer pipe string.
the solution according to the invention also has economic advantages, since the individual swivel bits - in contrast to the ring drill bit which can no longer be replaced - can be replaced quickly and easily. This possible reduction in tool life can result in considerable savings in material selection.
each swivel crown is provided with an eccentrically arranged shaft and that it has a plurality of receiving bores in the region of the recesses for receiving the shafts of the individual swivel crowns.
the receiving bores and / or the swivel crowns have means for a mutual connection. This is particularly important because the drill bit with the swivel bits arranged on it must be recovered from the borehole. It has proven particularly beneficial if each Receiving hole in the drill bit has an annular groove and each swivel bit in the area of its shaft has a widening corresponding to the groove. In terms of production technology, it is particularly advantageous if the widening is designed as a spring ring arranged in the groove provided on the shaft of each swivel crown.
the drill bit In order to be able to determine an exact predetermined drilling diameter, it is advantageous for the drill bit to have means for limiting the pivoted-out swivel crowns in the region of its recesses.
the side walls delimiting the recess are provided as a means for limiting the pivoted-out swivel crowns. In this way, a secure stop is achieved for the swivel crown pivoted into the working position without additional design effort.
the flushing agent line branches off in the shaft of the drill bit to the individual recesses for the swivel bits. It has been found that it is not necessary to also provide the swivel crowns with their own detergent lines if the detergent lines end in the region of the individual recesses. It is advantageous here if the openings of the flushing agent lines are arranged in the recesses in such a way that they are covered by the swiveled-in swivel crowns.
each recess has two rinsing bores which end in the central rinsing agent line located in the shaft and whose openings to the outside, ie are directed in the swivel direction of each swivel crown.
the pressure of the flushing agent supports the pivoting out which is caused primarily by frictional engagement of the cutting attachments of the swivel crowns with the deepest hole in the borehole.
the area of the recesses always remains free of drilling mud etc., so that the swivel crowns can be reliably pivoted into the recesses by rotating the inner boring bar by a small amount in the direction opposite to the drilling direction.
each swivel crown is chamfered in the region of the largest drilling diameter when the swivel crowns are swiveled out - that is to say in the edge region of the "enlarged" drilling diameter.
the figures show a drill bit consisting primarily of a head 1 and a shaft 2 for overlay drilling.
the head 1 of the drill bit according to the invention is provided with hard metal pins 3 in a known manner.
the shaft 2 is connected in a rotationally rigid manner to a driven and not shown inner tube linkage, a recess 4 being indicated in FIG. 3.
a flushing agent line 5 runs through the shaft 2 and the head 1 and is supplied with flushing agent for flushing out the cuttings from a flushing agent line running in the inner pipe string.
the head 1 has a plurality of recesses 6 arranged symmetrically over its circumference.
three recesses 6 are provided, in which swivel crowns 7 are arranged such that they come to lie within the drill bit diameter in the swiveled-in state and in project the swung-out state by a predetermined amount beyond the drill bit diameter. While all three swivel crowns 7 are shown in the swung-out state in FIG. 1, one of the three swivel crowns 7 is shown in its position pivoted into the recess 6 in FIG.
the embodiment shown relates to a small version of the drill bit according to the invention, in this case the drill head diameter is 88 mm, and in the swung-out state of the swivel crowns 7, drilling is carried out with an "enlarged" drill diameter of 124 mm. It is easy to see that larger versions allow a correspondingly higher number of swivel crowns 7.
each swivel crown 7 is provided with an eccentrically arranged shaft 8 and the drill bit in the region of its recesses 6 has a plurality of receiving bores 9 for receiving the shafts 8 of the individual swivel crowns 7, as can be seen particularly clearly from FIGS. 3 and 5 .
each receiving bore 9 in the drill bit is provided with an annular groove 10 and each swivel bit 7 on its shaft 8 with a widening corresponding to the groove 10. It is expedient if the widening is designed as a spring ring 11 arranged in the groove 10 provided on the shaft 8.
the side walls 12 delimiting the recess 6 are provided, as can be seen particularly clearly from FIGS.
each swivel crown 7 is provided with a bevelled cutting surface 14 in the region of the largest drilling diameter when the swivel crowns 7 are swiveled out, as can be seen from FIG.
each recess 6 has two flushing bores 5A and 5B, which end in the central flushing agent line 5 located in the shaft 2 and whose openings 13 point outwards, ie in the pivoting direction of each swivel crown 7.
the flushing agent line 5 branches in the shaft 2 of the drill bit to the individual recesses 6 for the swivel bits 7, as can be clearly seen in FIG.

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)

EP93102651A 1992-04-02 1993-02-19 Trépan de forage superposé Expired - Lifetime EP0563561B1 (fr)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
DE4211048		1992-04-02
DE4211048A DE4211048C1 (fr)	1992-04-02	1992-04-02

Publications (2)

Publication Number	Publication Date
EP0563561A1 true EP0563561A1 (fr)	1993-10-06
EP0563561B1 EP0563561B1 (fr)	1997-04-23

Family

ID=6455875

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP93102651A Expired - Lifetime EP0563561B1 (fr)	1992-04-02	1993-02-19	Trépan de forage superposé

Country Status (3)

Country	Link
EP (1)	EP0563561B1 (fr)
JP (1)	JPH0610582A (fr)
DE (2)	DE4211048C1 (fr)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
GB2316964A (en) *	1996-09-04	1998-03-11	Bulroc	Drill Means
EP1083293A1 (fr) *	1999-09-09	2001-03-14	HILTI Aktiengesellschaft	Outil de forage
WO2004104362A1 (fr) *	2003-05-26	2004-12-02	Shell Internationale Research Maatschappij B.V.	Trepan a percussion, systeme de forage comprenant ce trepan et procede de forage d'un trou de forage
US7455126B2 (en)	2004-05-25	2008-11-25	Shell Oil Company	Percussive drill bit, drilling system comprising such a drill bit and method of drilling a bore hole
US7546888B2 (en)	2003-06-12	2009-06-16	Shell Oil Company	Percussive drill bit
US7726419B2 (en)	2003-05-26	2010-06-01	Shell Oil Company	Drill bit, system, and method for drilling a borehole in an earth formation
EP2407630A2 (fr)	2010-07-16	2012-01-18	Minova International Limited	Procédé de forage par parapluie de tuyaux
DE102014104516A1 (de)	2014-03-31	2015-10-01	Sysbohr Gmbh - Bohrtechnik Für Den Spezialtiefbau	Bohrkrone, insbesondere zum Überlagerungsbohren, sowie Bohrvorrichtung mit einer Bohrkrone
CN110552621A (zh) *	2019-08-21	2019-12-10	赵春海	新型油田井下螺杆钻具及使用方法
WO2023214118A1 (fr) *	2022-05-03	2023-11-09	Mincon Nordic Oy	Trépan et procédé de forage de trou pour tuyau à installer dans le sol

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
EP0577545A1 (fr) *	1992-06-19	1994-01-05	Broder Ag	Trépan de forage
FR2797466B1 (fr) *	1999-08-13	2001-11-09	Gerard Arsonnet	Procede pour mesurer un parametre d'une partie d'un sol situee a une distance donnee de sa surface et dispositif permettant de mettre en oeuvre le procede
AT501696B1 (de)	2004-03-30	2008-03-15	Alwag Tunnelausbau Gmbh	Verfahren und vorrichtung zum bohren von löchern in boden- oder gesteinsmaterial
DE102008053276A1 (de)	2008-10-27	2010-05-20	Tracto-Technik Gmbh & Co. Kg	Bohrkrone
CN102953910B (zh) *	2012-11-15	2015-06-17	中国石油集团西部钻探工程有限公司	捞矛水力推进器
JP6678940B2 (ja) *	2016-07-13	2020-04-15	株式会社大林組	拡径掘削工具
DE102018105340A1 (de) *	2018-03-08	2019-09-12	Mhwirth Gmbh	Bohrkopf und diesen umfassendes Bohrsystem
CN109366750B (zh) *	2018-10-31	2021-01-05	重庆市瑞轩豪邦新型建材有限公司	一种混凝土加工装置

Citations (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US1858263A (en) *	1929-04-13	1932-05-17	Charlton James	Rotary expansion drilling tool
GB2132252A (en) *	1982-10-25	1984-07-04	Tone Boring Co	An air hammer drill device
EP0444682A1 (fr) *	1990-02-28	1991-09-04	Mitsubishi Materials Corporation	Outil d'excavation

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE2924393C2 (de) *	1979-06-16	1983-06-23	Brückner Grundbau GmbH, 4300 Essen	Bohrvorrichtung zum Überlagerungsbohren
DE3024102C2 (de) *	1980-06-27	1982-09-23	Ing. Günter Klemm, Spezialunternehmen für Bohrtechnik, 5962 Drolshagen	Exzenter-Bohrvorrichtung

1992
- 1992-04-02 DE DE4211048A patent/DE4211048C1/de not_active Expired - Fee Related
1993
- 1993-02-19 DE DE59306230T patent/DE59306230D1/de not_active Expired - Lifetime
- 1993-02-19 EP EP93102651A patent/EP0563561B1/fr not_active Expired - Lifetime
- 1993-03-23 JP JP5062355A patent/JPH0610582A/ja active Pending

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US1858263A (en) *	1929-04-13	1932-05-17	Charlton James	Rotary expansion drilling tool
GB2132252A (en) *	1982-10-25	1984-07-04	Tone Boring Co	An air hammer drill device
EP0444682A1 (fr) *	1990-02-28	1991-09-04	Mitsubishi Materials Corporation	Outil d'excavation

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
GB2316964A (en) *	1996-09-04	1998-03-11	Bulroc	Drill Means
US5934394A (en) *	1996-09-04	1999-08-10	Bulroc (Uk) Ltd.	Drill means
GB2316964B (en) *	1996-09-04	2000-06-07	Bulroc	Drill means
CN1081715C (zh) *	1996-09-04	2002-03-27	布洛克英国有限公司	钻井装置
EP1083293A1 (fr) *	1999-09-09	2001-03-14	HILTI Aktiengesellschaft	Outil de forage
US6405813B1 (en)	1999-09-09	2002-06-18	Hilti Aktiengesellschaft	Rock drill for drilling bores in reinforced concrete
CN100458097C (zh) *	2003-05-26	2009-02-04	国际壳牌研究有限公司	冲击钻头、包括这种钻头的钻井系统和钻井方法
WO2004104362A1 (fr) *	2003-05-26	2004-12-02	Shell Internationale Research Maatschappij B.V.	Trepan a percussion, systeme de forage comprenant ce trepan et procede de forage d'un trou de forage
US7726419B2 (en)	2003-05-26	2010-06-01	Shell Oil Company	Drill bit, system, and method for drilling a borehole in an earth formation
US7546888B2 (en)	2003-06-12	2009-06-16	Shell Oil Company	Percussive drill bit
US7455126B2 (en)	2004-05-25	2008-11-25	Shell Oil Company	Percussive drill bit, drilling system comprising such a drill bit and method of drilling a bore hole
EP2407630A2 (fr)	2010-07-16	2012-01-18	Minova International Limited	Procédé de forage par parapluie de tuyaux
DE102014104516A1 (de)	2014-03-31	2015-10-01	Sysbohr Gmbh - Bohrtechnik Für Den Spezialtiefbau	Bohrkrone, insbesondere zum Überlagerungsbohren, sowie Bohrvorrichtung mit einer Bohrkrone
EP2927417A2 (fr)	2014-03-31	2015-10-07	Sysbohr GmbH Bohrtechnik für den Spezialtiefbau	Couronne de foreuse rotative à percussion ouvrant, en particulier pour le forage de morts-terrains
CN110552621A (zh) *	2019-08-21	2019-12-10	赵春海	新型油田井下螺杆钻具及使用方法
WO2023214118A1 (fr) *	2022-05-03	2023-11-09	Mincon Nordic Oy	Trépan et procédé de forage de trou pour tuyau à installer dans le sol

Also Published As

Publication number	Publication date
DE4211048C1 (fr)	1993-05-06
JPH0610582A (ja)	1994-01-18
EP0563561B1 (fr)	1997-04-23
DE59306230D1 (de)	1997-05-28

Publication	Publication Date	Title
DE19780282B3 (de)	2012-09-06	Freitragend ausgebildeter Erweiterungsbohrer
EP0563561B1 (fr)	1997-04-23	Trépan de forage superposé
DE69704931T2 (de)	2001-10-04	Gesteinbohrer und werkzeug
DE69721531T2 (de)	2004-04-01	Schneidewerkzeug zur benutzung im bohrloch
DE2945766C2 (de)	1983-10-20	Bohrkrone und Bohrwerkzeug mit einer solchen Bohrkrone
DE2822512C2 (fr)	1988-09-08
DE69709793T2 (de)	2002-07-04	Bohrmeissel zu beaufschlagen einer formation
DE60110220T2 (de)	2006-02-23	Vorrichtung zum richtbohren
DE69002517T2 (de)	1994-03-24	Bohrspülungseinrichtung für Bohrwerkzeuge.
DE2813850A1 (de)	1978-10-19	Bohrmeissel fuer erd- und gesteinsbohrungen
EP0937860A1 (fr)	1999-08-25	Outil de forage et ou de frappe
DE3338577A1 (de)	1984-04-26	Drucklufthammer-bohrvorrichtung
EP0003815A1 (fr)	1979-09-05	Trépan de machines à percussion rotatives
DE2652366C2 (de)	1984-03-15	Hinterschnitt-Bohrwerkzeug
DE19918530B4 (de)	2006-07-06	Kupplung zum Verbinden zweier Abschnitte eines Bohrgestänges
EP0577545A1 (fr)	1994-01-05	Trépan de forage
WO2000057019A1 (fr)	2000-09-28	Dispositif de forage
DE4326000A1 (de)	1995-02-09	Stiftbohrkrone für das schlagende Bohren
DE19521447A1 (de)	1996-12-19	Rollenmeißel
DE60317548T2 (de)	2008-09-18	Reameranordnung
DE1811202A1 (de)	1969-07-17	Bohrer
DE2758385A1 (de)	1979-08-16	Schlag-bohreinrichtung fuer grosslochbohrungen
CH696928A5 (de)	2008-02-15	Kernbohrkrone, insbesondere Diamantbohrkrone, mit verbesserter Spülung.
DE602004006857T2 (de)	2008-02-07	Gesteinsbohreranordnung
DE10312570B4 (de)	2006-04-13	Rotierend arbeitendes Schneidwerkzeug

Legal Events

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