EP3868998B1 - Raccordement de deux membres de tige de forage d'une tige de forage destiné au forage du sol - Google Patents

Raccordement de deux membres de tige de forage d'une tige de forage destiné au forage du sol Download PDF

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Publication number
EP3868998B1
EP3868998B1 EP21167590.5A EP21167590A EP3868998B1 EP 3868998 B1 EP3868998 B1 EP 3868998B1 EP 21167590 A EP21167590 A EP 21167590A EP 3868998 B1 EP3868998 B1 EP 3868998B1
Authority
EP
European Patent Office
Prior art keywords
drill string
plug
pull
head
socket
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
EP21167590.5A
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German (de)
English (en)
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EP3868998A1 (fr
Inventor
Volker Boike
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.)
Tracto Technik GmbH and Co KG
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Tracto Technik GmbH and Co KG
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Application filed by Tracto Technik GmbH and Co KG filed Critical Tracto Technik GmbH and Co KG
Publication of EP3868998A1 publication Critical patent/EP3868998A1/fr
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Publication of EP3868998B1 publication Critical patent/EP3868998B1/fr
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Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • 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 was based on the object of providing an improved possibility for connecting two drill string members of a drill string for earth drilling, which in particular enables a simpler design and/or a safe and/or simple connection.
  • linkage includes not only exclusively rigid rods having individual rod sections that are directly or indirectly connected to one another, but in particular all power transmission elements that can be used in an earth drilling device.
  • earth drilling device includes any device which, in particular, can move a drill string with rod sections in an existing or to-be-created channel in the ground in order to create or expand a bore, in particular a horizontal bore, or around lines or other long ones to pull bodies into the ground.
  • An earth drilling device can include a drive device that pulls and/or pushes a drill string. It can additionally or alternatively be provided that the drive device drives the drill string in rotation.
  • horizontal drilling in the sense of the description includes in particular any type of existing or to be created, preferably horizontal, channels in a body, in particular earth canals including earth bores, rock bores or earth lines as well as underground or above-ground pipelines and water channels that are through Use an appropriate earth drilling device or have it installed.
  • drillstring member means a section of the drillstring that can be releasably connected to other sections of the drillstring.
  • a drill string member can be a pipe section. It is also possible for a drill string member to be a connecting element for two pipe sections that are indirectly connected to one another via the connecting element.
  • the terms “plug” and “socket” include an embodiment as one element of a pair of mechanical coupling elements, one of which (“plug”) can be at least partially inserted into the other (“socket”) in order to to form a connection.
  • the plug and/or socket can have stop or contact surfaces on the circumference, which are in contact with stop or contact surfaces on the other element and can act on them alternately in the event of thrust or pressure.
  • a drill string member advantageously has a plug-in element in the form of a plug at one end and a plug-in element in the form of a socket at the other end.
  • the drill string member has plug-in elements of the same shape at the end, so that the drill string member has a plug-in element in the form of a plug at both ends or a plug-in element in the form of a socket at both ends.
  • the through holes or the through hole in the socket makes sense for the through holes or the through hole in the socket to have a larger cross-sectional area based on the longitudinal axis of the through hole than the cross-sectional area at least in a section of the through hole in the plug.
  • an edge region of the head of the pull-off guard can rest on an edge in the through hole, in particular in the section of the plug, when the pull-off guard is inserted through the aligned through holes.
  • the through hole in the socket and the plug is preferably oriented substantially transversely to the longitudinal axis of the drill string member, with an angle in the angular range between 70° and 110° being preferred, Particularly preferred is an angle close to 90°, very particularly preferred is the angle 90°.
  • the plug can form a support for the head of the pull-off guard with an edge region when the pull-off guard is plugged in.
  • the plug can have a receptacle for the head, so that the head of the pull-off protection can be at least partially sunk into the plug.
  • An improved transmission of forces via the drill string members of the system is made possible, with compressive forces being able to be transmitted via a stop on the plug connection between plug and socket. Rotational forces can be transmitted via a profile formed within the plug connection between the plug and socket. Tensile forces are transmitted via the pull-off protection.
  • the stop for transmitting the compressive forces can be formed by means of an edge of the socket and/or the plug, which are at least partially in contact with one another when plugged together.
  • the thread used to secure the pull-off protection does not have to come into engagement with the drill string member itself, but rather an externally accessible additional element can be used, which can be renewed independently of the drill string members. If the thread or the pull-off protection itself needs to be replaced, it is not necessary to revise or maintain the drill string link itself.
  • a thread is provided at the end of the through hole in the plug-in element in the form of a plug, which thread is designed to cooperate with a thread of the pull-off protection.
  • the term “interaction” includes such a configuration that the pull-off protection has, at least in sections, an external thread that can cooperate with the internal thread formed at the end of the through hole of the plug.
  • a screw connection can be formed via a screw connection between the removal protection and the thread present at the end in the through hole of the plug, which is arranged in particular at the rear end of the through hole of the plug in the plugging direction, which provides a, in particular first, security against unintentional loosening of the removal protection can form.
  • this security can include an additional security element, which can be designed in the form of a (wedge) locking washer, a spring ring, a serrated lock washer or similar.
  • the securing element can rest on the head of the pull-off safety device.
  • a securing element can first be pushed onto the pull-off protection. Then the removal protection can be inserted into the aligned through holes of the socket and plug and screwed in and in particular tightened with the thread formed at least on the end of the through hole of the plug.
  • the safety element on the head of the pull-off guard can largely prevent the pull-off guard from coming loose.
  • the securing element is designed as a wedge locking washer, a securing effect can be achieved by having different angles (relationships) between the wedge locking washer and the thread pitch. In particular, there can be an angle ⁇ on the wedge locking washer that is greater than the thread pitch ⁇ of the thread. If it is described in the description that a thread is provided "at the end" of the through hole of the plug, this does not rule out that the thread extends through the entire through hole of the plug. However, arranging or forming a thread on the through hole at the end only, while the through hole of the plug is otherwise thread-free, offers the advantage that the thread in the form of an internal thread on the through hole only extends over a short area, which simplifies production.
  • the exposed thread can interact with an internal thread of a counterpart, in particular to provide a first (plug does not have an internal thread that interacts with the pull-off protection) or a second safety (plug has an internal thread that interacts with the pull-off protection) against losing the To form a pull-off protection.
  • the head of the pull-off guard is designed to interact with a tool, in particular a tool that acts "from above" on the pull-off guard.
  • a tool in particular a tool that acts "from above" on the pull-off guard.
  • this makes it possible to act on the pull-off protection using a device in order to improve handling and/or avoid direct contact with the hands of a user.
  • tools may be particularly preferred which act on the side of the pull-off guard that is spaced apart from the end of the pull-off guard in a direction that essentially corresponds to the longitudinal direction of the pull-off guard.
  • tools are preferred that act on an end face of the head that is exposed essentially in the longitudinal direction of the pull-off guard.
  • the inner contour of the receptacle on the socket can at least partially correspond to the outer contour of the head of the pull-off protection or be adapted to this.
  • a form fit is possible.
  • the cross section of the head of the Pull-off protection and the cross section of the receptacle can be round, in particular in the shape of a circle. Other shapes are possible, for example the head and/or receptacle can be elliptical, polygonal, rectangular, square or polygonal or have mixed forms thereof.
  • the plug can also have a receptacle for the head of the pull-off guard, so that the head of the pull-off guard can be at least partially retracted in the direction of the extension of the through hole in the plug.
  • the counterpart is designed to interact with a tool.
  • the tool can attack the counterpart "from above” - just like the head of the puller safety device.
  • the tool does not attack the side of the counterpart.
  • an upwardly oriented recess (essentially oriented in the longitudinal direction and spaced from the end) is provided, into which the tool can engage. This makes it possible for the counterpart to rest at least partially on the circumference of one or both of the drill pipe members. In particular, the counterpart can rest at least partially on the circumference of the socket.
  • the counterpart can be at least partially retracted in a receptacle on the socket. This can ensure that no significant increase in the cross-sectional area of the drill string member is achieved, or that there is no increase in the cross-sectional area of the drill string member. It is also possible to partially sink the counterpart into a receptacle formed in the plug.
  • the through holes of the socket and/or the plug are designed to be threadless. This makes a particularly simple design of the drill string members possible. In particular, there is no need to form a thread in the through hole with which the pull-off protection can interact. The step of creating or forming a thread on the drill string link is eliminated. Due to the threadless design of the through holes, the maintenance of the drill string members is unaffected.
  • a thread is formed at the end of the through hole of the plug, which is in particular an internal thread and which is designed to cooperate with a thread of the pull-off protection. This makes it possible to protect against losing the pull-off protection, which is effective.
  • the through holes are formed essentially transversely to the longitudinal axis of the drill string and/or formed centrally in the cross section. This enables stability of the engagement and the connection under tensile loads.
  • the loading of the through holes, especially for the connector, occurs in the area where the most material is present. Furthermore, a tensile load can be transmitted across the entire width and angling is almost impossible.
  • a plurality of through holes are formed in at least one of the plug-in elements, spaced apart in the longitudinal direction of the drill string members. This allows several pull-off devices to be introduced and used when connecting the drill string members, which can transmit a tensile force.
  • the plug and socket each have a profile on the circumference, which can interact when forming the plug connection to transmit rotational forces in a clockwise and/or counterclockwise direction around the longitudinal axis.
  • the profile allows the transmission of rotational forces between the drill string members when a plug-in connection is formed.
  • the plug has contact surfaces on the outer circumference, which can be brought into engagement with contact surfaces in the socket, the contact surfaces being able to extend at least partially in the radial direction in order to be able to transmit the rotational forces.
  • the radial direction includes contact surfaces that can have an angle of 0° to 45° to the radial direction.
  • the profile can be at least partially unchanged in the insertion direction. The profile makes it possible to transfer rotational forces from one drill string member to the other drill string member.
  • a profile can be provided that is at least partially unchanged in the longitudinal direction.
  • the invention also provides a method for connecting two drill string members of a drill string for earth drilling.
  • the two drill string members are inserted into one another at the ends and aligned so that through holes arranged in the drill string members are aligned, with a pull-off lock being inserted through the through holes, the exposed end of which can be screwed to a counterpart.
  • a method is created with which, in particular, the risk of injury for the user who connects the drill string members to one another is reduced, and yet a secure and resilient connection that can be made easily and/or is simply constructed is still possible.
  • the invention also provides a use of a pull-off device when connecting two drill string members of a drill string for earth drilling.
  • the two drill string members are inserted into one another at the ends and aligned so that through holes arranged in the drill string members are aligned.
  • the pull-off guard is inserted through the through holes, using a pull-off guard whose exposed end can be screwed to a counterpart.
  • Fig. 1 shows an isometric view of two drill string members 1, 2 of a drill string for earth drilling.
  • the two drill string members 1, 2 are shown in a position in which they can be connected to one another.
  • the drill string member 1 has a plug element 3 arranged at the end in the form of a plug 4.
  • the drill string member 2 has a plug element 5 arranged at the end in the form of a socket 6.
  • a profile is formed on the plug 4 in the circumferential direction, which has contact surfaces which have a maximum deviation of 45 ° compared to a radial direction.
  • the socket 6 has a profile 8 in the circumferential direction which interacts with the profile 7 of the plug 4 and which also has contact surfaces which have a maximum deviation of 45° compared to a radial direction.
  • the profiles 7, 8 are designed as toothed shaft profiles, which are at least partially unchanged in the longitudinal direction of the drill string members.
  • a stop 9 which is shown closed in the exemplary embodiment but can also be interrupted, is formed on the drill string member 1 for the drill string member 2.
  • the drill string member 2 can be connected to the circumferential edge with its bushing 6 Edge 10, which can also be interrupted, rests on the stop 9 in order to transmit compressive forces in the longitudinal direction of the drill string members 1, 2.
  • Two through holes 11 are formed on the plug 4 and are at a defined distance from the stop 9.
  • Two through holes 12 are formed on the bushing 6 of the drill string member 2, each of which has a defined distance from the edge 10.
  • the through holes 11, 12 are each arranged parallel to one another in the middle.
  • the through holes 11 on the plug 4 are aligned with the through holes 12 on the socket 6, since the distance from the stop 9 or the edge 10 is selected accordingly.
  • the through holes 11, 12 form a through hole through the plug 4 and socket 6, which has a different cross section over its extent.
  • a pull-off safety device 13 can be inserted through the aligned through holes 11, 12, which prevents the plug 4 from being pulled off from the socket 6 or the socket 6 from the plug 4.
  • the pull-off protection 13 allows tensile forces to be transmitted between the two drill string members 1, 2.
  • the pull-off safety device 13 has a head 14 and an end 15 spaced apart from the head. A thread is formed at the end 15 of the pull-off lock 13.
  • the length of the pull-off guard 13 with the head 14 and the end 15 is chosen such that the end 15 is exposed at the end when the pull-off guard 13 is inserted and protrudes from the plug 4.
  • the end 15 of the pull-off lock 13 can be screwed into the inserted position.
  • a counterpart 16 is provided that has an internal thread adapted to the external thread of the end 15 of the pull-off lock 13.
  • the head 14 of the pull-off protection 13 can be arranged in a receptacle of the socket 6 in such a way that the head 14 of the pull-off protection 13 rests at least partially on the circumference on a contour arranged in the socket 6.
  • the head 14 of the pull-off safety device 13 is sunk into the receptacle in the socket 6.
  • the counterpart 16 is sunk into a receptacle arranged in the socket 6.
  • On the circumference, the counterpart 16 rests against the outer contour of the receptacle in the socket 6.
  • a securing element 17 in the form of a wedge locking washer is arranged between the head 14 and the receptacle in the socket 6, which surrounds a shaft 18 of the pull-off safety device 13 and rests on the head 14.
  • the securing element 17 can loosen the screw connection between the pull-off lock 13 and the counterpart 16 and/or the pull-off lock 13 and the Prevent plugs.
  • a further securing element 19 is arranged, which surrounds the shaft 18 in the area of the end 15.
  • the pull-off lock 13 can be inserted through the aligned through holes 12 and 11 with the securing element 17 pushed on and first screwed onto a thread 20 of the plug 4. The end 15 of the pull-off device 13 is then exposed and protrudes from the plug 4. The securing element 19 can be pushed on and the counterpart 16 can be screwed onto the end 15 of the pull-off protection 13.

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  • 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 (13)

  1. Système de raccordement de deux membres de tige de forage (1, 2) d'une tige de forage destiné au forage du sol, un membre de tige de forage (1) présentant un élément enfichable (3) disposé à une extrémité sous la forme d'une fiche (4) et l'autre membre de tige de forage (2) présentant un élément enfichable (5) disposé à une extrémité sous la forme d'une douille (6) et un dispositif de sécurité anti-arrachage (13) étant présent, lequel présente une tête (14) et une extrémité (15) espacée de la tête, caractérisé en ce qu'un filetage est réalisé à l'extrémité (15) de la sécurité anti-arrachage (13), la fiche (4) et la douille (6) étant conçues pour former un raccord rapide de telle sorte que les deux membres de tige de forage (1, 2) présentent des trous de passage (11) alignés entre eux, à travers lesquels la sécurité anti-arrachage (13) peut être introduite, et la tête (14) et l'extrémité (15) sont espacées l'une de l'autre de telle sorte que l'extrémité (15) est exposée côté extrémité lorsque la sécurité anti-arrachage (13) est introduite.
  2. Système selon la revendication 1, dans lequel la tête (14) du dispositif anti-arrachage (13) est configurée pour interagir avec un outil, en particulier une clé Allen.
  3. Système selon la revendication 1, dans lequel la tête (14) de la sécurité anti-arrachage (13) est au moins partiellement escamotable dans un logement sur la douille (5).
  4. Système selon l'une quelconque des revendications 1 à 3, dans lequel il existe une contre-pièce (16) interagissant avec le filetage du dispositif anti-arrachage (13).
  5. Système selon la revendication 4, dans lequel la contre-pièce (16) est configurée pour interagir avec un outil.
  6. Système selon la revendication 4 ou 5, dans lequel la contre-pièce (16) est au moins partiellement escamotable dans un logement sur la douille (6).
  7. Système selon l'une quelconque des revendications 1 à 6, dans lequel il est prévu sur la sécurité anti-arrachage (13), entre la tête (14) et l'extrémité (15), un tronçon de tige qui est réalisé en particulier sans filetage et/ou dont la circonférence est supérieure à la circonférence de l'extrémité.
  8. Système selon l'une quelconque des revendications 1 à 7, dans lequel les trous de passage (11, 12) sont réalisés sans filetage.
  9. Système selon l'une quelconque des revendications 1 à 7, dans lequel un filetage est prévu à l'extrémité du trou de passage (11) de la fiche (4), laquelle est configurée pour interagir avec un filetage de la sécurité anti-arrachage (13).
  10. Système selon l'une quelconque des revendications 1 à 9, dans lequel les trous de passage (11, 12) s'étendent essentiellement transversalement à l'axe longitudinal du membre de tige de forage (1, 2) et/ou sont formés au centre de la section transversale.
  11. Système selon l'une quelconque des revendications 1 à 10, dans lequel la fiche (4) et la douille (6) présentent chacune un profil (7) qui interagissent lors de l'enfichage.
  12. Procédé pour relier deux membres de tige de forage (1, 2) d'une tige de forage destiné au forage du sol, les deux membres de tige de forage (1, 2) étant emboîtés l'un dans l'autre à leurs extrémités et étant alors orientés de telle sorte que des trous de passage (11) disposés dans les membres de tige de forage (1, 2) soient alignés, une sécurité anti-arrachage (13) étant emboîtée à travers les trous de passage (11), dont l'extrémité exposée peut être vissée avec une contre-pièce (16).
  13. Utilisation d'une sécurité anti-arrachage (13) lors du raccord de deux membres de tige de forage (1, 2) d'une tige de forage destiné au forage du sol, les deux membres de tige de forage (1, 2) étant emboîtés l'un dans l'autre à leurs extrémités et étant orientés de telle sorte que des trous de passage (11, 12) disposés dans les membres de tige de forage (1, 2) sont alignés, la sécurité anti-arrachage (13) étant enfichée à travers les trous de passage, une sécurité anti-arrachage (13) étant utilisée, dont l'extrémité exposée (15) peut être vissée avec une contre-pièce (16).
EP21167590.5A 2018-06-22 2019-06-19 Raccordement de deux membres de tige de forage d'une tige de forage destiné au forage du sol Active EP3868998B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102018004951.6A DE102018004951A1 (de) 2018-06-22 2018-06-22 Verbindung zweier Bohrstrangglieder eines Bohrstrangs zum Erdbohren
EP19181205.6A EP3587729B1 (fr) 2018-06-22 2019-06-19 Raccordement de deux membres de tige de forage d'une tige de forage destiné au forage du sol

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
EP19181205.6A Division EP3587729B1 (fr) 2018-06-22 2019-06-19 Raccordement de deux membres de tige de forage d'une tige de forage destiné au forage du sol

Publications (2)

Publication Number Publication Date
EP3868998A1 EP3868998A1 (fr) 2021-08-25
EP3868998B1 true EP3868998B1 (fr) 2023-09-27

Family

ID=66998327

Family Applications (2)

Application Number Title Priority Date Filing Date
EP19181205.6A Active EP3587729B1 (fr) 2018-06-22 2019-06-19 Raccordement de deux membres de tige de forage d'une tige de forage destiné au forage du sol
EP21167590.5A Active EP3868998B1 (fr) 2018-06-22 2019-06-19 Raccordement de deux membres de tige de forage d'une tige de forage destiné au forage du sol

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP19181205.6A Active EP3587729B1 (fr) 2018-06-22 2019-06-19 Raccordement de deux membres de tige de forage d'une tige de forage destiné au forage du sol

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Country Link
EP (2) EP3587729B1 (fr)
DE (1) DE102018004951A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116157583A (zh) 2020-07-28 2023-05-23 维米尔制造公司 用于水平定向钻井系统的钻柱接头
DE102020005982A1 (de) * 2020-09-30 2022-03-31 Tracto-Technik Gmbh & Co. Kg Gestängeschuss eines Erdbohrgestänges, Antriebselement, Gestängeschusssystem und Erdbohrvorrichtung

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB576547A (en) * 1944-09-12 1946-04-09 Walter Raylor Improvements in pipe or tube couplings
US3301581A (en) * 1965-09-30 1967-01-31 Robbins & Assoc James S Drilling shafts
DE9319852U1 (de) * 1993-12-23 1995-01-26 Begemann Juergen Steckkupplungen zum Zusammenfügen von Bohrstangen zu einem Bohrgestänge
DE10327732B4 (de) * 2003-06-18 2010-11-04 Klemm Bohrtechnik Zweigniederlassung Der Bauer Maschinen Gmbh Bohrgestänge mit Positionsstift
US20050196231A1 (en) * 2004-03-03 2005-09-08 Mckay Frederick D. Quick-locking connector
DE102011010958A1 (de) 2011-02-10 2012-08-16 Tracto-Technik Gmbh & Co. Kg Steckverbindung und Gestängeschuss für Bohrgestänge
WO2013037058A1 (fr) * 2011-09-13 2013-03-21 Atlas Copco Canada Inc. Tige de forage et joints de tige remplaçables
US9605493B2 (en) * 2014-06-23 2017-03-28 Arthur W. Lauder Downhole coupling

Also Published As

Publication number Publication date
EP3587729A1 (fr) 2020-01-01
EP3868998A1 (fr) 2021-08-25
EP3587729B1 (fr) 2021-04-14
DE102018004951A1 (de) 2019-12-24

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DE102010055808A1 (de) Befestigungsvorrichtung

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