EP3910161B1 - Accouplement de tige de forage - Google Patents

Accouplement de tige de forage Download PDF

Info

Publication number
EP3910161B1
EP3910161B1 EP20174448.9A EP20174448A EP3910161B1 EP 3910161 B1 EP3910161 B1 EP 3910161B1 EP 20174448 A EP20174448 A EP 20174448A EP 3910161 B1 EP3910161 B1 EP 3910161B1
Authority
EP
European Patent Office
Prior art keywords
coupling
drill rod
locking
receptacle
actuator
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.)
Active
Application number
EP20174448.9A
Other languages
German (de)
English (en)
Other versions
EP3910161C0 (fr
EP3910161A1 (fr
Inventor
Ulli Wiedenmann
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.)
Bauer Spezialtiefbau GmbH
Original Assignee
Bauer Spezialtiefbau 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 Bauer Spezialtiefbau GmbH filed Critical Bauer Spezialtiefbau GmbH
Priority to EP20174448.9A priority Critical patent/EP3910161B1/fr
Priority to CN202180006091.8A priority patent/CN114555904B/zh
Priority to PCT/EP2021/059831 priority patent/WO2021228489A1/fr
Publication of EP3910161A1 publication Critical patent/EP3910161A1/fr
Application granted granted Critical
Publication of EP3910161B1 publication Critical patent/EP3910161B1/fr
Publication of EP3910161C0 publication Critical patent/EP3910161C0/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
    • E21B17/02—Couplings; joints
    • E21B17/03—Couplings; joints between drilling rod or pipe and drill motor or surface drive, e.g. between drilling rod and hammer
    • 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
    • E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
    • E21B17/02—Couplings; joints
    • E21B17/04—Couplings; joints between rod or the like and bit or between rod and rod or the like
    • E21B17/046—Couplings; joints between rod or the like and bit or between rod and rod or the like with ribs, pins, or jaws, and complementary grooves or the like, e.g. bayonet catches
    • 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
    • E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
    • E21B17/02—Couplings; joints
    • E21B17/04—Couplings; joints between rod or the like and bit or between rod and rod or the like
    • E21B17/046—Couplings; joints between rod or the like and bit or between rod and rod or the like with ribs, pins, or jaws, and complementary grooves or the like, e.g. bayonet catches
    • E21B17/0465—Couplings; joints between rod or the like and bit or between rod and rod or the like with ribs, pins, or jaws, and complementary grooves or the like, e.g. bayonet catches characterised by radially inserted locking elements

Definitions

  • the invention relates to a drill pipe coupling with a sleeve-shaped coupling receptacle, a pin-shaped coupling member, which can be inserted axially into the coupling receptacle to form a rotationally fixed connection, and at least one locking bolt, which is directed transversely to the axial coupling direction, and is in a locked coupling position from the coupling receptacle a locking recess extends on the coupling member, according to the preamble of claim 1.
  • Such a drill pipe coupling is, for example, from DE 3 642 387 A1 known, in which an actuating ring on the drill pipe slides down due to its weight and secures the locking bolts in their locked position.
  • all locking elements are to be held in their locked position via the single actuating ring, so that if the actuating ring is blocked, for example due to contamination or tilting, the locking is no longer secure.
  • Another drill pipe coupling is, for example, from the DE 10 2011 109 001 A1 known.
  • This drill pipe coupling is often referred to as a so-called Kelly box.
  • axial locking is effected by inserting a transversely directed locking bolt into the coupling receptacle and the coupling member, so that a positive connection is achieved.
  • the invention is based on the object of specifying a drill pipe coupling which is particularly easy to operate.
  • the drill pipe coupling according to the invention is characterized in that the locking bolt is mounted on the sleeve-shaped coupling receptacle in a radially adjustable manner between an unlocking position and a locking position by means of a gravity-dependent adjustment mechanism, that the adjustment mechanism has at least one movable actuator, which is between a lower insertion position in which the locking bolt is in the Locking position is pushed, and an upper retraction position is movable, in which the locking bolt is retracted from the locking receptacle into the unlocking position, and that the actuator is held by gravity in the lower insertion position.
  • a basic idea of the invention can be seen in providing an at least semi-automatic drill pipe coupling, in which the locking bolt on the outer coupling receptacle can be adjusted between an unlocking position and a locking position by a gravity-dependent adjustment mechanism.
  • the adjustment mechanism has at least one movable actuator, which is pulled downwards by gravity, the locking bolt being pushed into an insertion position and held therein by the adjustment mechanism.
  • At least one external actuator To unlock it is therefore only necessary for at least one external actuator to be moved against gravity into an upper retraction position, with the locking bolt being retracted from the locking position into the unlocking position by the adjustment mechanism. To lock again, all you have to do is remove the holding force that holds the at least one actuator in the upper retraction position. If this holding force is no longer present, the actuator is moved back into the lower insertion position, with the locking bolt being pushed again into the unlocking position.
  • a drill pipe with the coupling receptacle or the coupling member can be easily coupled axially with an associated coupling member or a coupling receptacle of another drill pipe element, the locking bolt with the actuator being briefly displaced against the force of gravity by the axial insertion force until the locking bolt is pushed through the Gravity-dependent adjustment mechanism is pushed back into the locking position in order to lock the two drill pipe elements.
  • the coupling member and the locking bolt can be beveled at their free end.
  • a desired actuating force on the at least one actuator is achieved in that a load weight is arranged on the at least one actuator.
  • the load weight is detachably attached to the actuator.
  • a particularly reliable connection is achieved in that several locking bolts are provided, which are arranged, preferably evenly, distributed over the circumference of the sleeve-shaped coupling receptacle.
  • two to four locking bolts can be arranged distributed around the circumference of the coupling receptacle.
  • the locking recess can be designed as a blind hole or a through hole in the coupling member.
  • the locking recess is designed as an annular groove which extends along the circumference of the pin-shaped coupling member.
  • a cross-sectional contour of the groove corresponds to part of the outer circumferential contour of the locking bolt.
  • the groove has a semicircular cross section.
  • an unlocking device is arranged on the adjustment mechanism, with which the at least one actuator can be moved into the upper retraction position.
  • the unlocking device can be energy-operated.
  • an unlocking device can be provided on a drill drive, for example, on which an energy supply is basically already provided.
  • the unlocking device can be operated electrically, hydraulically or pneumatically.
  • the unlocking device can be actuated with an actuating rod.
  • the unlocking device can be a simple hook element or another receptacle for such a mechanical actuation or a simple handle.
  • the unlocking device has a ring member to which one or more actuators are articulated.
  • the ring member can surround the coupling receptacle in a ring, so that, for example when actuated with an actuating rod, the unlocking device can be actuated from any circumferential position.
  • the coupling receptacle and the coupling member have a polygonal cross-sectional shape, in particular a square cross-section.
  • a triangular or other polygonal cross-section is also possible, which enables torque transmission between the coupling receptacle and the coupling member.
  • the corresponding plug-in areas of the coupling receptacle and coupling member are designed as a clearance fit.
  • the invention further comprises a drill pipe arrangement with the drill pipe coupling described above. It is preferred that the drill pipe coupling is arranged between two drill pipe elements.
  • the drill pipe elements can be purely cylindrical on their outside with a conveyor spiral, stirring elements or without any elements.
  • a drill pipe arrangement with such a drill pipe coupling is provided, the drill pipe coupling being provided between a drill pipe element and a drilling tool or a drilling drive is.
  • the pin-shaped coupling member is preferably arranged at the top, while the sleeve-shaped coupling receptacle is arranged at the bottom relative to the associated coupling member.
  • a drilling auger, a box drill, a displacement drill or another drilling tool that is driven in rotation can be provided as the drilling tool.
  • a further advantageous embodiment of the invention results from the fact that the coupling receptacle and/or the coupling member are detachably attached to a drill rod element, a drilling tool or a drilling drive.
  • the coupling receptacle and/or the coupling member can thus be designed as a type of adapter between the drill pipe coupling according to the invention and conventional coupling elements, such as a Kelly box or a Kelly plug member. This also enables existing elements to be easily retrofitted.
  • a drill pipe coupling 10 has a pin-shaped coupling member 20, which is attached to a drill pipe element 2, which is only partially shown.
  • the coupling member 20 can in principle be firmly welded to the drill pipe element 2 or even formed in one piece thereon.
  • a retrofitting option is shown, wherein the drill pipe element 2 has a connecting section 3.
  • the connecting section 3 can be a conventional Kelly connection with a square area.
  • the pin-shaped coupling member 20 has a cylindrical front section 22 and a sleeve-shaped rear section 26.
  • the connecting section 3 of the drill pipe element 2 can be inserted in a fitting and non-rotatable manner into the sleeve-shaped rear section 26 of the coupling member 20 and axially fixed therein by transversely directed bolts.
  • An annular groove 25 is introduced as a locking recess 24 along the outer circumference of the peg-shaped front section 22 of the coupling member 20.
  • the groove 25 has an approximately semicircular shape in cross section.
  • a tapering head 23 with a diameter that decreases downwards is formed at the free end of the front section 22.
  • the sleeve-shaped coupling receptacle 30 is attached to a drilling tool 7 in the embodiment shown.
  • the drilling tool 7 has a schematically shown base body 8, on the top of which a sleeve-shaped connection region 9 is attached centrally to a longitudinal axis.
  • the drilling tool 7 can, for example, be a drilling bucket with a corresponding removal device for removing soil material.
  • the sleeve-shaped coupling receptacle 30 can also be firmly attached to the drilling tool 7, for example by welding.
  • the coupling receptacle 30 has a peripheral sleeve 32 with a central stepped receiving hole 33, which preferably has a square cross section corresponding to an outer contour of the pin-shaped coupling member 20.
  • An underside of the circumferential sleeve 32 is closed with a plate-shaped base 34, on the underside of which a peg-shaped connecting element 36 protrudes downwards.
  • the connecting element 36 is preferably designed in the same way as the connecting section 3 on the drill pipe element 2, so that the coupling receptacle 30 can also be easily used as a retrofit part for existing Kelly connections.
  • the peg-shaped connecting element 36 which is preferably designed as a square, can be inserted axially into the sleeve-shaped connecting region 9 on the drilling tool 7. Here it can be axially fixed by appropriate transverse bolts, so that a rotationally fixed and axially secured connection is formed between the drilling tool 7 and the coupling receptacle 30.
  • An adjusting mechanism 40 is arranged on the coupling receptacle 30, which in the exemplary embodiment shown has two lever-like actuators 42, each of which is pivotally mounted via a pivot axis 43 on a passage on the peripheral sleeve 32 of the coupling receptacle 30.
  • a locking bolt 50 is formed in one piece with the lever-shaped actuator 42 at a free end which projects inwards into the receiving hole 33.
  • a load weight 44 at the outer end of each actuator 42 presses it downward into an insertion position, in which the locking bolt 50 is pressed or pushed radially inwards into the receiving hole 33 into a locking position.
  • a recess 62 of an unlocking device 60 is formed on each of the load weights 44.
  • An actuating rod can be inserted into the recess 62, with which the load weight 44 and thus the actuator 42 can be moved upwards into a retraction position.
  • the locking bolt 50 is pushed radially outwards into an unlocking position in which the locking bolt 50 no longer engages in a locking recess 24 of an axially inserted coupling member 20. In this unlocking position, a coupling member 20 can be pulled out of the coupling receptacle 30 again.
  • Fig. 2 is again shown schematically how a coupling member 20 attached to the drill pipe element 2 can be inserted axially into the sleeve-shaped coupling receptacle 30 on the drilling tool 7 in the direction of the arrow shown.
  • the two locking bolts 50 can be pushed back radially outwards into their unlocking position from the locking position shown against the gravitational effect of the adjustment mechanism 40 when a predetermined axial force is applied.
  • the locking bolts 50 can be moved back radially inwards into their locking position by the gravitational effect of the adjusting mechanism 40, the locking bolts 50 extending into the locking recess 24 on the coupling member 20.
  • the coupling member 20 is now axially secured in the sleeve-shaped coupling receptacle 30.
  • FIG. 3 An alternative embodiment of the adjustment mechanism 40 is shown schematically in Fig. 3 shown.
  • the locking bolt 50 is mounted in a radially directed manner in a suitable passage 35 in the wall of the sleeve-shaped coupling receptacle 30. In the locking position shown, the coupling bolt 50 projects inwards into the receiving hole 33.
  • the locking bolt 50 At the radially outer end of the locking bolt 50, it is connected to a connecting pin 52 with a Z-shaped, lever-like actuator 42.
  • the actuator 42 is mounted on the coupling receptacle 30 so that it can pivot about a pivot axis 43. Furthermore, the actuator 42 is provided with a slot-like elongated hole 46 into which the connecting pin 52 of the locking bolt 50 projects.
  • the actuator 42 Due to the own weight of the actuator 42, it is pushed downwards into the in Fig. 3 Position shown pressed, with the locking bolt 50 being pushed radially inwards into the receiving hole 33 via the connecting pin 52.
  • the actuator 42 By means of a handle-like unlocking device 60 at the free end of the actuator 42, the actuator 42 can be pivoted upwards about the pivot axis 43.
  • the locking bolt 50 is moved radially outwards into its unlocking position.
  • the upward force on the actuator 42 is eliminated, it can move back down again due to its own weight, with the locking bolt 50 being pushed back into the locking position.
  • the adjustment mechanism 40 can in principle be designed in any other suitable manner, with a vertical orientation of the drill pipe coupling 10 exerting a sufficient weight force, through which the locking bolt 50 is pushed radially inwards into a locking position and held there.

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)

Claims (10)

  1. Raccord de tige de forage avec
    - un logement de raccord (30) en forme de manchon,
    - un organe de raccord (20) en forme de tourillon, lequel peut être enfiché de manière axiale dans le logement de raccord (30) pour former une liaison solidaire en rotation, et
    - au moins un boulon à verrou (50), lequel est dirigé de manière transversale par rapport à la direction de raccord axiale et s'étend, dans une position de raccord verrouillée, depuis le logement de raccord (30) dans un évidement de verrouillage (24) sur l'organe de raccord (20)
    - dans lequel le boulon à verrou (50) est monté de manière ajustable radialement entre une position de déverrouillage et une position de verrouillage au moyen d'un mécanisme d'ajustement (40) dépendant de la gravité sur le logement de raccord (30) en forme de manchon,
    - dans lequel le mécanisme d'ajustement (40) présente au moins un organe de réglage (42) pouvant être déplacé, lequel peut être déplacé entre une position d'insertion par glissement inférieure, dans laquelle le boulon à verrou (50) est glissé dans la position de verrouillage, et une position de retrait supérieure, dans laquelle le boulon à verrou (50) est retiré depuis l'évidement de verrouillage (24) dans la position de déverrouillage, et
    - dans lequel l'organe de réglage (42) est maintenu par la gravité dans la position d'insertion par glissement inférieure,
    caractérisé en ce
    - qu'un poids de charge (44) est disposé de manière amovible sur l'extrémité extérieure sur chacun de l'au moins un organe de réglage (42),
    - dans lequel une force de réglage souhaitée peut être prédéfinie par une augmentation ou une réduction correspondante du poids de charge (44).
  2. Raccord de tige de forage selon la revendication 1,
    caractérisé en ce que plusieurs boulons à verrou (50) sont prévus, lesquels sont disposés selon une répartition, de préférence homogène, sur la périphérie du logement de raccord (30) en forme de manchon.
  3. Raccord de tige de forage selon l'une quelconque des revendications 1 à 2,
    caractérisé en ce que l'évidement de verrouillage (24) est réalisé en tant qu'une rainure (25) de forme annulaire, laquelle s'étend le long de la périphérie de l'organe de raccord (20) en forme de tourillon.
  4. Raccord de tige de forage selon l'une quelconque des revendications 1 à 3,
    caractérisé en ce qu'est disposé sur le mécanisme d'ajustement (40) un système de déverrouillage (60), avec lequel l'au moins un organe de réglage (42) peut être déplacé dans la position de retrait supérieure.
  5. Raccord de tige de forage selon la revendication 4,
    caractérisé en ce que le système de déverrouillage (60) peut être actionné avec une tige d'actionnement.
  6. Raccord de tige de forage selon la revendication 4 ou 5,
    caractérisé en ce que le système de déverrouillage (60) présente un organe annulaire, sur lequel un ou plusieurs organes de réglage (42) sont articulés.
  7. Raccord de tige de forage selon l'une quelconque des revendications 1 à 6,
    caractérisé en ce que le logement de raccord (30) et l'organe de raccord (20) présentent une forme de section transversale polygonale, en particulier une section transversale carrée.
  8. Ensemble de tige de forage avec un raccord de tige de forage (10) selon l'une quelconque des revendications 1 à 7,
    caractérisé en ce que le raccord de tige de couplage (10) est prévu entre deux éléments de tige de forage (2).
  9. Ensemble de tige de forage avec un raccord de tige de forage (10) selon l'une quelconque des revendications 1 à 7,
    caractérisé en ce que le raccord de tige de forage (10) est prévu entre un élément de tige de forage (2) et un outil de forage (7) ou un entraînement de forage.
  10. Ensemble de tige de forage selon la revendication 8 ou 9,
    caractérisé en ce que le logement de raccord (30) et/ou l'organe de raccord (20) sont installés de manière amovible sur un élément de tige de forage (2), un outil de forage (7) ou un entraînement de forage.
EP20174448.9A 2020-05-13 2020-05-13 Accouplement de tige de forage Active EP3910161B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP20174448.9A EP3910161B1 (fr) 2020-05-13 2020-05-13 Accouplement de tige de forage
CN202180006091.8A CN114555904B (zh) 2020-05-13 2021-04-15 钻杆接合器
PCT/EP2021/059831 WO2021228489A1 (fr) 2020-05-13 2021-04-15 Accouplement de tiges de forage

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20174448.9A EP3910161B1 (fr) 2020-05-13 2020-05-13 Accouplement de tige de forage

Publications (3)

Publication Number Publication Date
EP3910161A1 EP3910161A1 (fr) 2021-11-17
EP3910161B1 true EP3910161B1 (fr) 2023-10-04
EP3910161C0 EP3910161C0 (fr) 2023-10-04

Family

ID=70736575

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20174448.9A Active EP3910161B1 (fr) 2020-05-13 2020-05-13 Accouplement de tige de forage

Country Status (3)

Country Link
EP (1) EP3910161B1 (fr)
CN (1) CN114555904B (fr)
WO (1) WO2021228489A1 (fr)

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3642387A1 (de) * 1986-12-11 1988-06-30 Delmag Maschinenfabrik Einrichtung zum indrehungsetzen und axialen bewegen von bohrrohrstraengen
DE10129064A1 (de) * 2001-06-15 2002-12-19 Hilti Ag Gesteinsbohrwerkzeug
DE102006022613B4 (de) * 2006-05-15 2008-08-07 Klemm Bohrtechnik Zweigniederlassung Der Bauer Maschinen Gmbh Bohrantriebseinheit und Bohrgerät
US20100044113A1 (en) * 2008-08-22 2010-02-25 Coiled Tubing Rental Tools, Inc. Connection for well bore drilling tools
DE102011109001A1 (de) 2011-07-29 2013-01-31 Abf-Bohrtechnik Gmbh & Co. Kg Bohrgerät mit Kelly-Stange und äußere Werkzeugschnellbefestigung
CN102392611A (zh) * 2011-10-14 2012-03-28 武汉武船机电设备有限责任公司 无出土螺纹钻杆及同时形成螺纹和光杆的无出土打桩方法
US11131151B2 (en) * 2017-03-02 2021-09-28 Weatherford Technology Holdings, Llc Tool coupler with sliding coupling members for top drive
US10526852B2 (en) * 2017-06-19 2020-01-07 Weatherford Technology Holdings, Llc Combined multi-coupler with locking clamp connection for top drive
US10527104B2 (en) * 2017-07-21 2020-01-07 Weatherford Technology Holdings, Llc Combined multi-coupler for top drive
AU2019213357A1 (en) * 2018-10-05 2020-04-23 Downhole Products Limited Slimline Stop Collar

Also Published As

Publication number Publication date
WO2021228489A1 (fr) 2021-11-18
EP3910161C0 (fr) 2023-10-04
CN114555904A (zh) 2022-05-27
CN114555904B (zh) 2026-04-03
EP3910161A1 (fr) 2021-11-17

Similar Documents

Publication Publication Date Title
EP0434924B1 (fr) Dispositif pour forer un puits adjacent ou dévié à partir d'un puits, notamment d'un puits tubé
EP3910160B1 (fr) Accouplement de tige de forage et procédé de fonctionnement de l'accouplement de tige de forage
DE2849022C2 (de) Vorrichtung zum Ausheben von Erdlöchern
EP2770156B1 (fr) Outil de forage et procédé de forage terrestre
DE2748093A1 (de) Von hand betaetigbares werkzeug zur installation blinder ankermuttern
DE2525163C2 (de) Reibahle
DE2048245A1 (de) Kraftgetriebene Bohrrohr und Schwerstangenabfangvomchtung (Spider)
EP3195982A1 (fr) Dispositif de serrage pour une liaison vissee, procede de serrage d'une liaison vissee et ecrou filete
DE102015119571A1 (de) Nietwerkzeug
DE102006022613B4 (de) Bohrantriebseinheit und Bohrgerät
EP3910161B1 (fr) Accouplement de tige de forage
DE2903936C2 (de) Vorrichtung zur Gewinnung von Kernen
DE69621921T2 (de) Ziehvorrichtung für einen meisselhalter
EP3951128A1 (fr) Dispositif de dégagement d'un espace intermédiaire hélicoïdal d'une tarière et procédé pour créer un alésage
EP2484627B1 (fr) Moyen de réception de charge
EP4372202A1 (fr) Appareil de forage dans le trou et procédé de réalisation d'un forage dans le sol
EP4339417A1 (fr) Ensemble de tête de serrage pour tendre un élément de tige de forage
AT522832B1 (de) Schirmständer mit einem stiel zur verankerung im boden
EP3517727B1 (fr) Outil de carottage
EP1145876A1 (fr) Attelage de remorque pour véhicules automobiles
EP4073341A1 (fr) Dispositif de raccordement d'une tige de forage au mécanisme d'entraînement de forage d'une installation de forage, et ensemble de forage pour trous de forage comprenant un tel dispositif
DE20017358U1 (de) Drehbohrgestänge
EP0383225A1 (fr) Dispositif de connexion détachable entre une table rotative et un tube de forage
EP0374788B1 (fr) Tige de forage télescopique
DE1219885B (de) Klemmvorrichtung fuer Bohrgestaenge oder Rohre

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

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

Free format text: STATUS: THE APPLICATION HAS BEEN PUBLISHED

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

B565 Issuance of search results under rule 164(2) epc

Effective date: 20201102

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

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20220509

RBV Designated contracting states (corrected)

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

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

Free format text: STATUS: GRANT OF PATENT IS INTENDED

INTG Intention to grant announced

Effective date: 20230525

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

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

Free format text: STATUS: THE PATENT HAS BEEN GRANTED

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: LANGUAGE OF EP DOCUMENT: GERMAN

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 502020005479

Country of ref document: DE

U01 Request for unitary effect filed

Effective date: 20231103

U07 Unitary effect registered

Designated state(s): AT BE BG DE DK EE FI FR IT LT LU LV MT NL PT SE SI

Effective date: 20231109

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

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20240105

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

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20240204

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 FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20231004

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

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20240204

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20240105

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20231004

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

Ref country code: RS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20231004

Ref country code: PL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20231004

Ref country code: NO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20240104

Ref country code: HR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20231004

U20 Renewal fee for the european patent with unitary effect paid

Year of fee payment: 5

Effective date: 20240528

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 502020005479

Country of ref document: DE

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

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20231004

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

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20231004

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

Ref country code: SM

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20231004

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20231004

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20231004

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20231004

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

Effective date: 20240705

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

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

Ref country code: MC

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20231004

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20240513

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

Ref country code: MC

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20231004

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20240531

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

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20240513

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 NON-PAYMENT OF DUE FEES

Effective date: 20240513

U20 Renewal fee for the european patent with unitary effect paid

Year of fee payment: 6

Effective date: 20250520

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

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT; INVALID AB INITIO

Effective date: 20200513

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

Ref country code: HU

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT; INVALID AB INITIO

Effective date: 20200513