EP0458289A1 - Connexion pour tubes de forage ou analogues - Google Patents

Connexion pour tubes de forage ou analogues Download PDF

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Publication number
EP0458289A1
EP0458289A1 EP91108223A EP91108223A EP0458289A1 EP 0458289 A1 EP0458289 A1 EP 0458289A1 EP 91108223 A EP91108223 A EP 91108223A EP 91108223 A EP91108223 A EP 91108223A EP 0458289 A1 EP0458289 A1 EP 0458289A1
Authority
EP
European Patent Office
Prior art keywords
connection
projections
sleeve part
plug
connection according
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.)
Granted
Application number
EP91108223A
Other languages
German (de)
English (en)
Other versions
EP0458289B1 (fr
Inventor
Wilhelm Schaufenberg
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.)
Mhwirth GmbH
Original Assignee
Wirth Maschinen und Bohrgeraete Fabrik 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 Wirth Maschinen und Bohrgeraete Fabrik GmbH filed Critical Wirth Maschinen und Bohrgeraete Fabrik GmbH
Publication of EP0458289A1 publication Critical patent/EP0458289A1/fr
Application granted granted Critical
Publication of EP0458289B1 publication Critical patent/EP0458289B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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 relates to a releasable connection with a socket part and a plug-in part for drill pipes or other objects that can be used when drilling holes, in which an axial force and torque transmission is provided by means of shaped elements that are in engagement in the operating state of the connection.
  • the sleeve part has a blind hole with a smooth wall into which a cylindrical pin protruding from the plug-in part can be inserted.
  • the pin of the male part has an annular groove near its end, in which hemispherical approaches of screws can engage after the parts have been joined, which are screwed into radial bores of the socket part. The screws can only absorb tensile forces, if at all, to an extremely small extent.
  • the male part and the female part both have a closed cross section. An internal axial passage is not available with such a coupling.
  • the sleeve part is formed on the inside as a hexagon.
  • the plug-in part has a pin with a corresponding external hexagon, which should fit into the socket part with tight play.
  • the pin has an annular groove between its ends.
  • In the socket part there are two parallel bores into which a U-shaped bracket can be inserted, the legs of which engage at opposite points in the annular groove of the pin when the insert part is inserted into the socket part up to a stop. This is simply a matter of securing the parts against axial relative movement and preventing them from separating.
  • the object of the invention is to provide a threadless, releasable connection of the type specified, which not only allows torque transmission in both directions, but also allows a full transmission of axial pressure and tensile forces, and which also to be connected to each other Share a large inner passage.
  • the invention also aims for advantageous designs of the connection or its parts in detail. Further problems connected with all of this, with which the invention is concerned, result from the respective explanation of the indicated solution.
  • the invention is characterized by the features specified in claim 1.
  • connection for drill pipes or other parts that can be used when drilling holes, in particular so-called displacement screws and similar tools, which is characterized by a number of essential advantages.
  • the connection is through simple relative movements both parts easily and quickly manufactured. It allows the transmission of axial compressive and tensile forces as well as the transmission of torques in both directions.
  • the connection is such that it can be designed without difficulty for the absorption of high loads. All of this is accomplished without blocking the inside of the parts. Rather, there is a free inner passage, so that the connection is particularly suitable and advantageous for those cases in which a drill string, a tool or an assembly used in the drilling work is to be flowed through by a medium.
  • This can be, for example, a drilling fluid or concrete that is to be routed to the bottom of a hole, such as in the case of pile foundations.
  • the design can be made so that there are radially protruding projections with torque transmission surfaces on the plug-in part, distributed over its outer circumference, to which counter-surfaces are assigned inside the socket part.
  • the projections located inside the sleeve part can be designed in the manner of strips and form the counter surfaces with their sides.
  • radially protruding parts are arranged in the interior of the sleeve part, apart from the projections, distributed over the inner circumference, the sides of which form the counter surfaces for the torque transmission surfaces of the plug-in part.
  • the slide-in parts can have the form of longitudinal bolts which can be inserted into recesses on the outer circumference of the insert part and in passages in the socket part.
  • the number of these longitudinal bolts can depend on the requirements, in particular on the size of the torque that is transmitted by them should be chosen. If there are applications in which essentially only a not very large torque is to be transmitted in one direction, an arrangement of two longitudinal bolts can be sufficient and expedient, in particular at diametrically opposite points.
  • the longitudinal bolts are advantageously releasably attachable to the insert, for example by means of clamping pins or the like.
  • pins are provided as insertion parts on the outer circumference of the plug-in part, which can be inserted into recesses on the outer circumference of the socket part.
  • the training can in particular be such that the pins are slidably guided with limited travel and are under the force of compression springs.
  • connection is also particularly suitable for double-walled parts in which, in addition to a central cavity, there is an annular cavity which is sealed off from this.
  • An inner tube then extends into the socket part and into the insert part.
  • both parts each have a free axial passage D of relatively large diameter, which is in the subsequent part, e.g. Drill pipe, tool or the like. Can continue.
  • the sleeve part 21 is provided on the inside of its wall with projections 22 which are regularly distributed over the circumference and extend in the direction of surface lines, between which corresponding passages 23 remain.
  • the undersides of the projections 22 form flat engagement surfaces 24 for contact surfaces 14 provided on the plug-in part 11.
  • These contact surfaces 14 are formed by the front sides of locking pieces 13, which are regularly distributed over the outer circumference on the insertion part 11 and are directed radially.
  • the extent a of the locking pieces 13 in the circumferential direction is somewhat less than the circumferential dimension b of the passages 23 in the sleeve part 21.
  • the socket part 21 has a support surface 25 on the end face, against which a support 15 on the insert part 11 can come to rest when the connection is made.
  • radially projecting lugs 12 are provided in addition to the locking pieces 13, which are expediently distributed in a regular arrangement over the outer circumference of the plug-in part 11, advantageously such that their number is equal to the number of locking pieces 13. As such, the lugs 12 can pass directly into the locking pieces 13. However, it is advantageous to leave a distance between the two, as can be seen from FIG. 1.
  • a side surface 17 of the lugs 12 is aligned with a side surface 18 of the locking pieces 13.
  • the other side surfaces 16 of the lugs 12 serve as torque transmission surfaces when the connection is joined. They then come to rest against counter surfaces 26 in the interior of the sleeve part 21, which in the embodiment shown are formed from side surfaces of the projections 22.
  • connection also includes elements which are referred to as insertion parts and which, after the sleeve part 21 and the plug-in part 11 have been joined together, are in positive engagement with them and run parallel to the longitudinal central axis of the connection.
  • the arrangement and design is such that a torque can be transmitted via the insert parts.
  • insert parts are used longitudinal bars 31 are advantageously considered, which can be inserted into recesses 19 on the outer circumference of the plug-in part 11 and into free passages 23 at the relevant points of the socket part 21.
  • the insertion part 11 is designed so that the longitudinal bolts 31 can be inserted in the direction of surface lines into the recesses 19 and the passages 23 aligned therewith.
  • FIG. 5 shows a drill pipe 1 which is designed as a socket part 21 at one end and as a plug-in part 11 at the other end. Any number of such drill pipes can then be assembled into a strand by means of the connection parts explained.
  • a drill string part 2 is connected to a displacement screw 3 by means of the connection, which is shown in the assembled state, on one side in view, on the other side in section.
  • the connection is made in the illustrated embodiment as follows.
  • the insertion part 11 is inserted axially into the sleeve part 21 in such a way that the locking pieces 13 and also the lugs 12 can be pushed through the passages 23.
  • the length of the passages 23 and the locations at which the locking pieces 13 are coordinated so that the locking pieces 13 at the inner end of the passages 23 can emerge from them before the support 15 on the plug-in part 11 is fully in contact with the support surface 25 of the sleeve part 21 comes.
  • the insertion part 11 is then rotated relative to the sleeve part 21 about its axis so that the contact surfaces 14 on the locking pieces 13 slide under the ends of the projections 22 and thus bear against the engagement surfaces 14.
  • the torque transmission surfaces 16 also come at the lugs 12 of the Push-in part 11 for contacting the counter surfaces 26 of the projections 23 of the socket part 21.
  • the surfaces 14 and 24 can transmit an axial tensile force and the surfaces 15 and 25 can transmit an axial pressure force between the parts connected to one another.
  • the transmission of a torque in one direction of rotation is possible via surfaces 16 and 26.
  • a torque transmission in the other direction of rotation is ensured by the longitudinal bolts 30 (FIG. 6), which are inserted into the recesses 19 and passages 23 aligned therewith.
  • the longitudinal bolts 30 or the like by a split pin or the like. be fixed on the plug-in part, as indicated at point 32.
  • FIGS. 7 to 9 Another embodiment of the connection is shown in FIGS. 7 to 9, which differs in some details from that according to FIGS. 1 to 4, but to which the statements made there also apply in principle.
  • a drill pipe or similar rod part with a single passage D is shown in FIGS. 1 to 6.
  • the connection in a so-called double wall linkage is shown.
  • annular passage D2 surrounding the latter, which is achieved in that an inner tube 7 and 8 is inserted into an outer tube 5 and 6, respectively.
  • a bell-shaped end 7a of the inner tube 7 engages over the end of the inner tube 8, a seal 9 additionally ensuring that the two spaces D1 and D2 remain separate from one another.
  • the insertion part 41 has radially projecting projections 42 and locking pieces 43, the extent of which in the circumferential direction is the same here Size.
  • a side surface 47 of the lugs 42 is aligned with a side surface 48 of the locking pieces 43.
  • the other side surfaces 46 of the lugs 42 serve as torque transmission surfaces.
  • the plug-in part 41 rests with a shoulder-like support 45 on a support surface 55 of the socket part 51, so that the transmission of compressive forces is also ensured.
  • longitudinal bars 31 are also present as further torque-transmitting elements, which can be inserted into recesses 49 on the outer circumference of the insert part 41 and into free areas of the passages 53 in the socket part 51 that are aligned with the recesses.
  • Such a longitudinal bar 31 is only shown in FIG. 7. At least two longitudinal bars are advantageously provided at opposite points. Their number can also be larger depending on the requirements.
  • the sleeve part 71 again has inner projections 72 distributed over the circumference with passages 73 in between.
  • the contact surfaces 64 come into contact with the rear engagement surfaces 74 of the projections 72. This ensures that the tensile force is transmitted correctly.
  • Pressure forces are transmitted from the support 65 of the insert 61 to the support surface 75 of the sleeve part 71.
  • a shoulder 66 can also rest on the insertion part 61 on the front sides 76 of the projections 72.
  • insert parts in the form of pins 67 on the insert part 61 which can engage in through bores 77 on the socket part 71, serve to transmit torques in both directions, as can be seen in FIG. 13.
  • the number of pins can be selected depending on the loads to be absorbed.
  • the pins 67 are displaceable in guide bores and are under the force of compression springs 68.
  • the extension path is in each case limited by a collar 69 on the pin 67.
  • a counter-holder 78 with lugs 79 fitting into the bores 77 can serve to push back the pins 67.
  • the counter holder is in particular ring-shaped, as shown in FIG. 14, so that it can be displaced on the cylindrical outside of the sleeve part 71. It can be divided so that it can be placed around the sleeve part for use.
  • the insertion part 61 has an inner tube 7 and the socket part 71 has an inner tube 8, so that two passages D1 and D2 are present, as can be the case with a double rod.

Landscapes

  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Earth Drilling (AREA)
  • Mutual Connection Of Rods And Tubes (AREA)
  • Drilling Tools (AREA)
EP91108223A 1990-05-25 1991-05-22 Connexion pour tubes de forage ou analogues Expired - Lifetime EP0458289B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE9005954U 1990-05-25
DE9005954U DE9005954U1 (fr) 1990-05-25 1990-05-25

Publications (2)

Publication Number Publication Date
EP0458289A1 true EP0458289A1 (fr) 1991-11-27
EP0458289B1 EP0458289B1 (fr) 1994-10-19

Family

ID=6854128

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91108223A Expired - Lifetime EP0458289B1 (fr) 1990-05-25 1991-05-22 Connexion pour tubes de forage ou analogues

Country Status (3)

Country Link
EP (1) EP0458289B1 (fr)
AT (1) ATE113115T1 (fr)
DE (2) DE9005954U1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0624693A2 (fr) * 1993-05-12 1994-11-17 MFS MASCHINENFABRIK GmbH & Co. KG Procédé et dispositif de réalisation des ouvrages d'étanchéité en segment, dans la construction civile
WO2001023674A1 (fr) * 1999-09-28 2001-04-05 Steel Foundations Technology Pty Ltd Pieux d'ancrage vissants
WO2003012245A1 (fr) * 2001-07-30 2003-02-13 Smith International, Inc. Joint de decharge de fond
WO2005071213A1 (fr) * 2004-01-26 2005-08-04 Cementation Foundations Skanska Limited Tubage permettant de soutenir la paroi d'un puits forme dans le sol avec des sections jointes etanches et procede de fabrication d'une paroi de palplanche secante au moyen du tubage de recouvrement

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITTV20120182A1 (it) * 2012-09-26 2014-03-27 Renzo Porcellato Giunto per aste o eliche di perforazione
DE102014018102A1 (de) * 2014-12-05 2016-06-09 Tracto-Technik Gmbh & Co. Kg "Bohrgestänge, Verbindungssystem, Erdbohrvorrichtung und Verfahren zum Verbinden eines Bohrgestängeschusses"

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE472936C (de) * 1926-10-27 1929-03-07 Gebhard Lingg Rohrkupplung
US1857420A (en) * 1930-09-09 1932-05-10 Wolford Edgar Warren Coupling device
FR877329A (fr) * 1941-11-28 1942-12-03 Dispositif d'assemblage rapide à verrou de sécurité pour tubes de sondage
FR961165A (fr) * 1950-05-06
DE3239342A1 (de) * 1982-10-23 1984-04-26 Schmidt, Kranz & Co GmbH Zweigniederlassung Zorge, 3421 Zorge Bohrgestaenge
DE3810540A1 (de) * 1988-03-28 1989-10-19 Hilti Ag Bohrwerkzeug

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR961165A (fr) * 1950-05-06
DE472936C (de) * 1926-10-27 1929-03-07 Gebhard Lingg Rohrkupplung
US1857420A (en) * 1930-09-09 1932-05-10 Wolford Edgar Warren Coupling device
FR877329A (fr) * 1941-11-28 1942-12-03 Dispositif d'assemblage rapide à verrou de sécurité pour tubes de sondage
DE3239342A1 (de) * 1982-10-23 1984-04-26 Schmidt, Kranz & Co GmbH Zweigniederlassung Zorge, 3421 Zorge Bohrgestaenge
DE3810540A1 (de) * 1988-03-28 1989-10-19 Hilti Ag Bohrwerkzeug

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0624693A2 (fr) * 1993-05-12 1994-11-17 MFS MASCHINENFABRIK GmbH & Co. KG Procédé et dispositif de réalisation des ouvrages d'étanchéité en segment, dans la construction civile
DE4315837A1 (de) * 1993-05-12 1994-11-17 Mfs Maschinenfabrik Gmbh & Co Verfahren und Vorrichtung zur segmentweisen Herstellung von Schlitzwänden im Tiefbau
EP0624693A3 (fr) * 1993-05-12 1995-05-10 Mfs Maschinenfabrik Gmbh & Co Procédé et dispositif de réalisation des ouvrages d'étanchéité en segment, dans la construction civile.
DE4315837C2 (de) * 1993-05-12 2000-01-13 Mfs Maschinenfabrik Gmbh & Co Verfahren und Vorrichtung zur segmentweisen Herstellung von Schlitzwänden im Tiefbau
WO2001023674A1 (fr) * 1999-09-28 2001-04-05 Steel Foundations Technology Pty Ltd Pieux d'ancrage vissants
WO2003012245A1 (fr) * 2001-07-30 2003-02-13 Smith International, Inc. Joint de decharge de fond
US7198101B2 (en) 2001-07-30 2007-04-03 Smith International, Inc. Downhole release joint
WO2005071213A1 (fr) * 2004-01-26 2005-08-04 Cementation Foundations Skanska Limited Tubage permettant de soutenir la paroi d'un puits forme dans le sol avec des sections jointes etanches et procede de fabrication d'une paroi de palplanche secante au moyen du tubage de recouvrement

Also Published As

Publication number Publication date
ATE113115T1 (de) 1994-11-15
EP0458289B1 (fr) 1994-10-19
DE9005954U1 (fr) 1990-08-02
DE59103261D1 (de) 1994-11-24

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