EP0543806B1 - Perforatrice hydraulique a roche pour le fond du trou - Google Patents

Perforatrice hydraulique a roche pour le fond du trou Download PDF

Info

Publication number
EP0543806B1
EP0543806B1 EP90911460A EP90911460A EP0543806B1 EP 0543806 B1 EP0543806 B1 EP 0543806B1 EP 90911460 A EP90911460 A EP 90911460A EP 90911460 A EP90911460 A EP 90911460A EP 0543806 B1 EP0543806 B1 EP 0543806B1
Authority
EP
European Patent Office
Prior art keywords
piston
chamber
piston hammer
drill
hammer
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
EP90911460A
Other languages
German (de)
English (en)
Other versions
EP0543806A1 (fr
Inventor
Per Gustafsson
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.)
G-DRILL AB
Original Assignee
G-DRILL AB
G Drill 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 G-DRILL AB, G Drill AB filed Critical G-DRILL AB
Publication of EP0543806A1 publication Critical patent/EP0543806A1/fr
Application granted granted Critical
Publication of EP0543806B1 publication Critical patent/EP0543806B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D9/00—Portable percussive tools with fluid-pressure drive, i.e. driven directly by fluids, e.g. having several percussive tool bits operated simultaneously
    • B25D9/06—Means for driving the impulse member
    • B25D9/12—Means for driving the impulse member comprising a built-in liquid motor, i.e. the tool being driven by hydraulic pressure
    • 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

Definitions

  • This invention relates to a hydraulic down-the -hole rock drill comprising a housing arranged to be mounted to the front end of a drill tube, a drill bit slidably received and retained by the front end of the housing and having a channel extending longitudinally therethrough, a head at the rear end of the housing, a port in said head arranged to be supplied with pressurized hydraulic fluid from said drill tube, a piston hammer arranged to repetitively impact on said drill bit and having a a longitudinal channel therethrough, a control valve in said head, a flushing fluid channel extending from said valve to the front end of said drill bit and including said channels in the piston hammmer and in the drill bit, said piston hammer having a first piston surface in a first pressure chamber to drive the piston hammer forwardly when said first pressure chamber is pressurized, a second piston surface in a second pressure chamber arranged to drive the piston hammer rearwardly when said first chamber is depressurized, said valve being arranged to alternately connect said first pressure chamber to said
  • the drill shown in the figures has a tubular housing 11.
  • a sleeve-like insert 12 is fixed to the front end of the housing 11 by means of threads. It forms a holder for a drill bit 13. Since the drill bit and the way it is retained in its holder are conventional, only the rear end of the drill bit, the shank, is shown.
  • the drill bit 13 is axially slidable in its holder a limited distance and it is shown in its rear end position in which it is during drilling.
  • the drill bit 13 is locked against rotation to the housing 11 in a conventional way.
  • a central flushing fluid passage 15 leads from the annular rear end surface 19, the impact surface, of the drill bit shank to the front end of the drill bit
  • a sleeve-like insert 14 is axially clamped between a shoulder 16 in the housing 11 and a spacer sleeve 17 by means of a non-illustrated sub that is threaded to the housing and has threads by means of which it can be fixed to the lower end of a drill pipe.
  • the insert 14 forms a head in the upper end of the housing 11 and it forms a housing for a tubular valving element 18.
  • a piston hammer 20 has a front end 21 sealingly guided in a cylindrical guiding portion 22 of the front insert 12 and a rear end 24-26 sealingly guided in a cylindrical guiding portion 27 of the rear insert 14.
  • the rear guided portion 24- 26 of the piston hammer 11 has a control groove 26 so that it comprises two lands 24,25.
  • a chamber 28 extends axially between the two piston guiding portions 22,27.Thus the major part of the length of the piston hammer 20 runs freely without contact with the housing.
  • the piston can be 500 mm long and the distance between the two guiding portions 22,27 can be 400 mm.
  • the major length of the piston hammer 20 can have a greater diameter than its guided portions 21 and 23,24 respectively,this enlarged major portion has been given the reference numeral 29.
  • the diameter of the rear guiding portion 27 is greater than the diameter of the front guiding portion 22 which provides for a differential piston area of the piston hammer in the chamber 28 so that the pressure in the chamber 28,which is permanently prevailing as will be described later,will cause a continuous upward directed force on the piston hammer.
  • the piston has a central longitudinal channel 30 that is coaxial with the channel 15 in the drill bit 13.
  • the rear insert 14 has a central tube 31 that protrudes into the channel 30 in the piston with a sliding fit and the valving element 18 is located at the rear of the tube 31 and it is coaxial with the tube.
  • the back end of the insert 14 has a cap 32 so that the flushing fluid channel 15 in the drill bit extends straight all the way back to the cap 32 through the interior of the sleeve-like valving element 18.
  • the annular rear end surface 33 of the piston hammer 20 is in a cylinder chamber 34.
  • the piston area of this piston surface 33 is greater than the differential piston area of the piston hammer located in the chamber 28; it is several times greater for example four times greater.
  • the tube 31 has a number of holes 35 that are normally blocked.
  • the valving element 18 and its housing form three chambers 36,37,38.
  • the valving element 18 has a sliding surface 40 above the chamber 37 and a sliding surface 41 below the chamber 37.
  • the diameter of the sliding surface 40 is greater than the diameter of the sliding surface 41 so that a differential piston area is provided that gives an upward directed differential force on the valving element 18 when the chamber 37 is pressurized.
  • This differential piston area is however smaller than the annular piston surface 43 that is in the chamber 36 and gives a downward force when the chamber 36 is pressurized.
  • a supply passage 50 that has a port 51 to the sub,that is to the interior of the drill tube, a port 52 to the chamber 37, and a port 53 to the chamber 28.
  • a passage 55 extends between two ports 56,57,that is,the passage 55 is always open to the flushing fluid channel 15,30,31.
  • a passage 58 connects the two chambers 34 and 38.
  • a control passage 61 for shifting the position of the valving element has a port 62 into the chamber 36 and control ports 63,64.
  • the valving element has two positions;a rear position shown in Fig 1 in which it opens the chamber 38 to the tube 31 and a forward position shown in Fig 2 in which it opens the chamber 37 to the chamber 38.
  • the valving element has a valving edge 68 that cooperates with an edge 69 in the valve housing.
  • a number of teeth 70 extend beyond the valving edge 68 so as to define the forward position of the valving element shown in Fig 2 in which the edges 68 and 69 overlap.
  • the non-illustrated drill pipe transmits rotation and a feed force to the drill housing 11.
  • the feed force is transmitted from the drill housing 11 to the drillbit which co-rotates with the housing 11.
  • Drive fluid that is, water under pressure, is supplied through the drill pipe and the supply passage 50 is continuously pressurized through its port 51.
  • the chambers 37 and 28 are continuously pressurized.
  • the piston hammer 20 is in its position of impacting on the drill bit 13.
  • the valving element 18 was in its position shown in Fig 2 since the control passage was pressurized, but, during the hammering stroke, the port 63 of the control passage 61 is opened to the control groove 26, the port 64 is blocked by the land 25 of the piston hammer and when the port 57 of the drain passage 55 is opened to the control groove 26 the control passage 61 drains the control chamber 36 so that the pressure in the chambers 37,38 moves the valving element 18 upwards so that the cylinder chamber 34 at the rear of the piston hammer is drained.
  • the pressure in the chamber 28 moves the piston hammer backwards.Then, during the upward return stroke of the hammer piston, the drain port 57 is blocked by the land 25, and the control port 64 is opened to the chamber 28 so that the control passage 61 pressurizes the chamber 36.As a result, the valving element moves to its forward position shown in Fig 2 in which it pressurizes the cylinder chamber 34 so that the piston hammer turns and starts its forward work stroke.
  • Drilling is interrupted automatically when the drill housing 11 is lifted by means of the drill pipe since the drill bit 13 and the piston hammer will move forwardly relative to the housing.
  • the piston hammer will move into a damping chamber 72 so that the holes 35 will be unblocked and supply an intensive flow of water to the flushing fluid passage 15,30,31.
  • the piston hammer 20 is guided along its two lands 24,25 and at its front end, it is guided along the length of the guiding portion 22.
  • more than half of its length is located between its short guiding lengths which makes it possible to have close tolerances in the guidings so that the leakage is minimized and still the expected life of the drill will be long.It is not necessary to have any lubricating additives to the drive water.
  • the supply passage 50 and the drain passage 58 are shown as single passages.It should be understood that they are multiplied in order to provide for sufficient flow.All the supply passages 50 and drain passages 58, and the passages 61,65 for controlling the valve 18 are located in the rear insert 14.
  • the drill can be used not only for drilling downward directed holes but it can be used in all directions. Thus, it can even be used to drill upward directed vertical holes.

Landscapes

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

Claims (3)

  1. Perforatrice hydraulique en fond de trou comprenant un corps (11) agencé de manière à pouvoir être monté à l'extrémité antérieure d'un tube de forage, un trépan de forage (13) logé à coulissement et retenu par l'extrémité anténeure du corps et présentant un canal (15) s'étendant longitudinalement à travers lui, une tête (14) à l'extrémité postérieure du corps, un orifice (51), dans cette tête, disposé de manière à être alimenté en fluide hydraulique sous pression en provenance du tube de forage, un marteau piston (20) disposé de manière à venir frapper d'une manière répétée le trépan de forage (13) et présentant à travers lui un canal longitudinal (30), un clapet de commande (18) dans la tête, un canal de fluide de rinçage (15,30,31) s'étendant à partir de ce clapet vers l'extrémité antérieure du trépan de forage (13) et comportant les canaux percés dans le marteau piston et dans le trépan de forage, le marteau piston (20) ayant une première aire de piston (33) dans une première chambre à pression (34), afin d'entraîner le marteau piston (20) vers l'avant lorsque cette première chambre à pression est mise sous pression, une seconde aire de piston dans une seconde chambre à pression (28) disposée de manière à entraîner le marteau piston (20) vers l'arrière lorsque la première chambre (34) n'est plus mise sous pression, le clapet (18) étant disposé de manière à connecter la première chambre à pression (34) alternativement à l'orifice (51) et au canal du fluide de rinçage (15,30,31), de manière à provoquer un mouvement alternatif du marteau piston (20), caractérisée en ce que la seconde chambre (28) est en communication continuelle avec un orifice (51) qui est disposé de manière à être alimenté en fluide hydraulique sous pression en provenance du tube de forage et elle s'étend autour du marteau piston (20) sur toute la distance entre les portions de guidage antérieure et postérieure (22,27), la portion de guidage antérieure (22) ayant un diamètre plus petit que celui de la portion de guidage postérieure (27) de manière à produire la seconde aire de piston.
  2. Perforatrice suivant la revendication 1 caractérisée en ce qu'au moins les deux tiers de la longueur du marteau piston (20) ne sont pas guidés et sont logés dans la secondc chambre (28).
  3. Perforatnce suivant la revendication 2 caractérisée en ce qu'au moins la moitié de la longueur du marteau piston (20) présente un plus grand diamètre comparativement à ses portions guidées.
EP90911460A 1990-07-12 1990-07-12 Perforatrice hydraulique a roche pour le fond du trou Expired - Lifetime EP0543806B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/SE1990/000490 WO1992001138A1 (fr) 1990-07-12 1990-07-12 Perforatrice hydraulique a roche pour le fond du trou

Publications (2)

Publication Number Publication Date
EP0543806A1 EP0543806A1 (fr) 1993-06-02
EP0543806B1 true EP0543806B1 (fr) 1996-01-17

Family

ID=20378526

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90911460A Expired - Lifetime EP0543806B1 (fr) 1990-07-12 1990-07-12 Perforatrice hydraulique a roche pour le fond du trou

Country Status (6)

Country Link
EP (1) EP0543806B1 (fr)
AT (1) ATE133233T1 (fr)
DE (1) DE69024978T2 (fr)
DK (1) DK0543806T3 (fr)
ES (1) ES2084033T3 (fr)
WO (1) WO1992001138A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108166920A (zh) * 2017-12-26 2018-06-15 中国石油天然气集团公司 一种冲击活塞及应用其的自激式复合冲击钻井工具

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2133425A1 (fr) * 1992-04-01 1994-10-14 Fredrich Graham Moir Marteau-perforateur fond de trou a entrainement par liquide
WO1994023171A1 (fr) * 1993-04-05 1994-10-13 Sds Pty. Ltd. Ameliorations concernant le sondage par percussion
AU688311B2 (en) * 1993-04-05 1998-03-12 Impact Drilling International Pty Ltd Percussion drilling improvements
DE4433533C1 (de) * 1994-09-20 1995-11-23 Terra Ag Tiefbautechnik Rammbohrvorrichtung
AUPO957097A0 (en) * 1997-10-01 1997-10-30 Rear, Ian Graeme Hammer
US6444652B1 (en) 1998-08-10 2002-09-03 Novirio Pharmaceuticals Limited β-L-2'-deoxy-nucleosides for the treatment of hepatitis B
PT2415776T (pt) 1998-08-10 2016-07-07 Novartis Ag Beta-l-2'-desoxi-nucleosidos para o tratamento da hepatite b
US6155361A (en) * 1999-01-27 2000-12-05 Patterson; William N. Hydraulic in-the-hole percussion rock drill
CA2295463C (fr) 1999-01-27 2008-04-29 William N. Patterson Marteau perforateur hydraulique de roche fond de trou
US6464023B2 (en) 1999-01-27 2002-10-15 William N. Patterson Hydraulic in-the-hole percussion rock drill
US6875751B2 (en) 2000-06-15 2005-04-05 Idenix Pharmaceuticals, Inc. 3′-prodrugs of 2′-deoxy-β-L-nucleosides
DE10146025B4 (de) * 2000-12-02 2004-12-16 Tracto-Technik Gmbh Verfahren und System zum horizontalen Erdbohren sowie Schlagspitze und Verfahren zum Starten eines Schlagwerkzeugs
WO2002044511A1 (fr) 2000-12-02 2002-06-06 Tracto-Technik Gmbh Appareil pneumatique de forage de roches et procede pour mettre en marche cet appareil
WO2007036721A2 (fr) * 2005-09-29 2007-04-05 Read Well Services Limited Appareil et procede
US7681664B2 (en) 2008-03-06 2010-03-23 Patterson William N Internally dampened percussion rock drill
EP2987945B1 (fr) * 2014-08-19 2018-01-31 Doofor Oy Marteau ä coup hydraulique
CN113585960B (zh) * 2021-08-05 2023-11-21 重庆大学 中心转阀式液动冲击器
DE102021213908A1 (de) 2021-12-07 2023-06-07 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung eingetragener Verein Bohrhammer und Verfahren zum Tiefbohren

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RO74260A (fr) * 1974-04-25 1980-10-30 Oy Tampella Ab,Fi Perforateur percutant actione a liquide sous pression
DE3343565C2 (de) * 1983-12-01 1985-11-14 Ing. Günter Klemm, Spezialunternehmen für Bohrtechnik, 5962 Drolshagen Tieflochhammer
DE3443542A1 (de) * 1984-11-29 1986-06-05 Fried. Krupp Gmbh, 4300 Essen Hydraulische schlagvorrichtung
SE500654C2 (sv) * 1987-07-14 1994-08-01 G Drill Ab Hydraulisk sänkborrmaskin

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108166920A (zh) * 2017-12-26 2018-06-15 中国石油天然气集团公司 一种冲击活塞及应用其的自激式复合冲击钻井工具

Also Published As

Publication number Publication date
DE69024978D1 (de) 1996-02-29
EP0543806A1 (fr) 1993-06-02
DK0543806T3 (da) 1996-05-06
WO1992001138A1 (fr) 1992-01-23
DE69024978T2 (de) 1996-12-12
ATE133233T1 (de) 1996-02-15
ES2084033T3 (es) 1996-05-01

Similar Documents

Publication Publication Date Title
EP0543806B1 (fr) Perforatrice hydraulique a roche pour le fond du trou
US6994175B2 (en) Hydraulic drill string
EP0394255B1 (fr) Perforatrice hydraulique de fond pour forer dans la roche
US4921056A (en) Hammer drills for making boreholes
US4660658A (en) Hydraulic down-the-hole rock drill
AU2008237554B2 (en) Pressurized fluid flow system for a reverse circulation hammer
US3599730A (en) Pressure fluid operated percussion tool
KR102422904B1 (ko) 다운-더-홀 해머용 가압 유체 유동 시스템 및 이에 기초한 정상 순환 해머
SE512653C2 (sv) Anordning för jordförstärkning, verktyg och metod
EP0022865B1 (fr) Foreuse de profondeur a commande hydraulique
EP1458950B1 (fr) Machine de forage entrainee par liquide
EP0634559B1 (fr) Machine de forage dans le trou, actionnée par un fluide
US4726429A (en) Percussion down hole drilling tool with central fluid flushing passage
AU685561B2 (en) An in-hole rock drilling machine
EP0733153B1 (fr) Moteur a percussion hydraulique
RU2097520C1 (ru) Погружная ударная машина
CA2007610C (fr) Marteaux fond-de-trou utilisant du fluide d'entrainement use a des fins de balayage
KR102015668B1 (ko) 역순환 천공 해머를 위한 가압된 유체 유동 시스템 및 이를 이용한 해머
HK1089219B (en) A hydraulic percussive in-hole rock drilling machine
WO2004061260A1 (fr) Dispositif de forage de roches

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH DE DK ES FR GB IT LI LU NL SE

17P Request for examination filed

Effective date: 19930326

17Q First examination report despatched

Effective date: 19941219

RAP3 Party data changed (applicant data changed or rights of an application transferred)

Owner name: G-DRILL AB

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH DE DK ES FR GB IT LI LU NL SE

REF Corresponds to:

Ref document number: 133233

Country of ref document: AT

Date of ref document: 19960215

Kind code of ref document: T

REF Corresponds to:

Ref document number: 69024978

Country of ref document: DE

Date of ref document: 19960229

ET Fr: translation filed
ITF It: translation for a ep patent filed
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Effective date: 19960417

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2084033

Country of ref document: ES

Kind code of ref document: T3

REG Reference to a national code

Ref country code: DK

Ref legal event code: T3

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: ES

Payment date: 20090923

Year of fee payment: 20

Ref country code: DK

Payment date: 20090919

Year of fee payment: 20

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: LU

Payment date: 20090929

Year of fee payment: 20

Ref country code: GB

Payment date: 20090922

Year of fee payment: 20

Ref country code: CH

Payment date: 20090923

Year of fee payment: 20

Ref country code: NL

Payment date: 20090923

Year of fee payment: 20

Ref country code: AT

Payment date: 20090923

Year of fee payment: 20

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20090922

Year of fee payment: 20

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20090926

Year of fee payment: 20

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 20091008

Year of fee payment: 20

REG Reference to a national code

Ref country code: NL

Ref legal event code: V4

Effective date: 20100712

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

BE20 Be: patent expired

Owner name: *G-DRILL A.B.

Effective date: 20100712

REG Reference to a national code

Ref country code: DK

Ref legal event code: EUP

REG Reference to a national code

Ref country code: GB

Ref legal event code: PE20

Expiry date: 20100711

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20100713

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION

Effective date: 20100713

Ref country code: NL

Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION

Effective date: 20100712

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION

Effective date: 20100711

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20091001

Year of fee payment: 20

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION

Effective date: 20100712