EP2299049B1 - Raccord enfichable pour tiges de sondage - Google Patents

Raccord enfichable pour tiges de sondage Download PDF

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Publication number
EP2299049B1
EP2299049B1 EP10008881.4A EP10008881A EP2299049B1 EP 2299049 B1 EP2299049 B1 EP 2299049B1 EP 10008881 A EP10008881 A EP 10008881A EP 2299049 B1 EP2299049 B1 EP 2299049B1
Authority
EP
European Patent Office
Prior art keywords
connection
plug
coupling
drill pipe
elements
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
EP10008881.4A
Other languages
German (de)
English (en)
Other versions
EP2299049A2 (fr
EP2299049A3 (fr
Inventor
Josef Püttmann
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
Original Assignee
Tracto Technik GmbH and Co KG
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.)
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Publication date
Application filed by Tracto Technik GmbH and Co KG filed Critical Tracto Technik GmbH and Co KG
Publication of EP2299049A2 publication Critical patent/EP2299049A2/fr
Publication of EP2299049A3 publication Critical patent/EP2299049A3/fr
Application granted granted Critical
Publication of EP2299049B1 publication Critical patent/EP2299049B1/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

Definitions

  • the invention relates to a plug-in coupling for a drill pipe, as well as a one or more such plug-in couplings exhibiting drill pipe.
  • Horizontal drilling devices are known from the prior art in which a drill pipe with a drilling head fastened to its front end is introduced into the soil via a drive device arranged in a starting excavation pit or on the earth's surface.
  • a thrust and torque are transmitted to the drill head in order to drive this within the soil.
  • this drive device additionally with a percussion drive, which can be activated if necessary, when the drill head in the ground encounters an obstacle, such as a boulder.
  • the generation of impact pulses and their transmission via the drill pipe to the drill head, the obstacle should be destroyed, so that subsequently can be used again in the normal, ie pushing and rotating drilling operation.
  • CH 223 733 A discloses a rock drill with replaceable rock drill head.
  • the rock drill head is provided with a conical approach.
  • an extension drill pipe is described, which is open on both sides and whose bore merges at the ends in conical extensions, which serve for receiving detachable associated components, in particular for inserting the conical approach of the rock drill head.
  • the rock drill thus has a plug-in coupling with at least two coupling elements, wherein the coupling elements have a first corresponding coupling surface pair, namely the conical projection and the conical expansion, wherein the coupling surface pair is designed to be tapered, ie conical here.
  • the present invention seeks to provide an existing of a variety of rod sections drill pipe in which the rod sections can be easily connected to each other and ensures a secure transmission of torque and high pressure forces.
  • An inventive drill string consists of a plurality of rod sections, wherein the individual rod sections are at least partially connected to each other via a plug-in coupling designed according to the invention.
  • An inventive plug-in coupling for such a drill string has at least two coupling elements, wherein the coupling elements form at least a first corresponding pair of coupling surfaces, which is tapered, so that when a loading of the plug-in coupling with pressure forces a (possible) clearance-free clamping is generated.
  • the clamp generated according to the invention between the two coupling elements of the plug-in coupling ensures a direct and loss-free as possible transmission of compressive forces and impact pulses over the existing drill string consisting of several rod sections.
  • the plug-in coupling of the invention has a relatively small taper angle (i.e., the angle that the tapered surface makes with the longitudinal axis of the respective coupling element). This is preferably not more than 10 ° and more preferably not more than 5 ° (based on the longitudinal axes of the coupling elements).
  • the two coupling elements of the plug-in coupling can be provided with corresponding conical sections.
  • the coupling elements have at least a second corresponding pair of coupling surfaces via which a torque can be transmitted in the engaged state of the plug-in coupling.
  • the drill pipe can be provided at its front end with an oblique control surface are generated by the transverse (to the longitudinal axis of the drill string) directed forces that lead to a lateral deflection of the front end of the drill string.
  • a reversal can be achieved by rotating the drill string manually or by means of a corresponding (rotary) drive by a defined angle about its longitudinal axis, so that the oblique control surface is realigned.
  • a quasi-straight bore course can in principle be achieved by continuously rotating the drill string so that the transversely directed (deflection) forces are compensated in the course of one revolution of the front end of the drill string.
  • a drilling device e.g. can be controlled by an inclined control surface at the front end of the drill string
  • To transmit a torque or to form the second corresponding coupling surface pair is provided to provide one of the coupling elements with a mandrel which is flattened at least on one side to form a coupling surface and in the engaged state of the plug-in coupling in a recess of second coupling element in which in turn a corresponding coupling surface is formed, engages.
  • the coupling elements have at least a third corresponding pair of coupling surfaces via which tensile forces can be transmitted in the engaged state of the plug-in coupling.
  • Tensile forces can be exerted on the drill pipe, for example, to retract it after the creation of a hole. If the tensile forces are so great that thereby the frictional connection of the first corresponding pair of coupling surfaces of the or the plug-in couplings is released, a complete release of the individual plug-in coupling (s) is prevented by the third coupling surface pair. A complete release of one of the plug-in couplings of the drill string could cause the separated part of the drill pipe would have to be recovered by excavation.
  • plug-in coupling according to the invention can be provided that between two relative positions of the coupling elements, in which either the first coupling surface pair or the third pair of coupling surfaces abutting each other, a displacement is provided. This displacement can be provided to make the plug-in detachable.
  • the plug-in coupling according to the invention can also be provided that in the two relative positions of the two coupling elements to each other, the second pair of coupling surfaces abutting each other, so that both during the propulsion and during the retraction of the drill string (ie, if tensile forces are applied thereto) a transmission a torque on the plug-in coupling is possible.
  • the plug-in coupling can be designed so that it is detachable by the two coupling elements are first pivoted to each other and then one of the coupling elements is rotated by a defined angle about its own longitudinal axis.
  • a transverse opening can be provided in one of the coupling elements, into which e.g. a wedge can be driven, by which a force for releasing the clamping is exerted on the corresponding other coupling element.
  • a further preferred embodiment of the drill pipe according to the invention provides that the rod sections are at least partially tubular.
  • the weight of the individual rod sections of the drill string can be reduced.
  • a drill pipe to be generated which can transmit high impact pulses, tensile forces and torques, but at the same time is so flexible that reaches a good steerability in the ground can be.
  • the rod sections of the drill string may further include a marker, e.g. a one-sided flattening in a drill pipe with round cross-section, have, by means of which the roll angle can be determined visually or automatically within the soil.
  • a marker e.g. a one-sided flattening in a drill pipe with round cross-section
  • the Fig. 1 shows two rod sections 1 of a drill string according to the invention, which are tubular with a circular cross-section.
  • the rod sections 1 each have two coupling elements on the end, which form a plug-in coupling according to the invention.
  • the two rod sections 1 can be connected to each other, the transmission of tensile and compressive forces and a torque in both directions is possible.
  • One of the coupling elements on each rod section 1 is formed as a plug-in part 2, which is inserted into the other coupling element of the adjacent rod section 1 formed as a receiving part 3.
  • the coupling element designed as a plug-in part 2 has a shaft 4 which has a circular cross-section.
  • This shaft 4 merges into a locking shoulder 5, which is likewise produced starting from a circular cross-section, which projects beyond the diameter of the shaft 4, but which has been flattened on two opposite sides by the milling of plane surfaces 6.
  • the locking shoulder 5 is tapered in conical shape with a small taper angle of about 5 ° (see. Fig. 2 ).
  • the male part merges into a mandrel 7 which, like the locking shoulder 5, has been produced starting from a circular cross-section with a diameter smaller than that of the shaft 4 by milling plane surfaces 8 on two opposite sides ,
  • the plane surfaces 6 of the locking portion 5 are rotated by 90 ° (with respect to the longitudinal axis of the respective rod assembly) to the flat surfaces 8 of the mandrel 7.
  • the central bore 9 merges on the front side into a mandrel opening 10 whose width is slightly greater than the distance between the two plane surfaces 8 of the mandrel 7;
  • the mandrel 7 extends in the engaged state of the plug-in coupling with its front portion in this mandrel opening 10 (see. Fig. 2 ).
  • the mandrel opening 10 runs on one side (in the Fig. 2 down), so that a corresponding opening is formed in the surface of the rod section (first side opening 11).
  • the flat surfaces 8 of the mandrel 7 and the large side surfaces of the mandrel opening 10 thereby form a (second) Coupling surface pair out, which allows the transmission of torque in both directions.
  • the mandrel opening 10 merges into a section of a transverse bore 12.
  • a further, short (extending in the longitudinal direction of the rod assembly) bore 14 is introduced, whose diameter is smaller than that of the central bore 9 and also to one side (in the Fig. 1 to the top) runs out; There she goes into a (second) side opening 15, which extends into the conical section of the central bore.
  • the laterally extending rear bore 14 and the (second) side opening 15 together form an L-shaped opening.
  • the width of the L-shaped opening is only slightly above the distance between the two planar surfaces 6 of the locking shoulder 5 and is smaller than the (larger) diameter of the conical locking paragraph fifth
  • the (second) side opening 15 opposite a (third) side opening 16 is provided, which has a circular cross-section.
  • the third side opening 16 merges into the (second) side opening 11 formed by the mandrel opening 10.
  • the two rod sections 1 are then pivoted by about 90 ° into the coaxial position, as in the Fig. 2 is shown.
  • the rear locking surface 17 of the locking shoulder 5 is located at the by the diameter jump formed between the rear bore 14 and the central bore 9 paragraph.
  • the paragraph trained shoulder surface 18 and the rear locking surface 17 form a (third) coupling surface pair, can be transmitted via the tensile forces between the rod sections 1 (train position of the plug-in coupling).
  • the plug-in coupling of the mandrel 7 already protrudes with its front portion already in the mandrel opening 10. This ensures that even in the train position of the plug-in torque in both directions can be transmitted.
  • a pivoting of the mandrel 7 from the third side opening 16 into the mandrel opening 10 is made possible by the second side opening 11.
  • the two coupling elements When exerting compressive forces, the two coupling elements are displaced relative to each other until it comes to the clamping of the first coupling surface pair (pressure position of the plug-in coupling - see. Fig. 2 ). In this position, the mandrel 7 projects a little way into the transverse opening 12; At the same time, it projects beyond a shoulder 19 formed between the transverse opening 12 and the second side opening 11. This prevents unintentional pivoting of the two rod sections 1 in the pressure position of the plug-in coupling. It is thus possible to transmit compressive forces without it being possible for an unintentional angling of the rod sections to one another and a consequent unwanted loosening of the plug-in coupling. A pivoting of the rod sections 1 is therefore possible only starting from the train position.

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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 (12)

  1. Coupleur rapide destiné à une tige de forage avec au moins deux accouplements, lesdits accouplements présentant au moins une première paire de surfaces d'accouplement correspondante qui se rétrécit de telle sorte qu'un serrage sans jeu est assuré avec des forces de pression sous l'effet du coupleur rapide, caractérisé en ce que les accouplements présentent au moins une deuxième paire de surfaces d'accouplement correspondante par laquelle un couple de serrage peut être transmis à l'état accouplé et le premier accouplement présente un mandrin (7), qui est formé au moins aplati monocâble pour la formation d'une surface d'accouplement et qui s'engage à l'état accouplé dans un évidement du deuxième accouplement dans lequel est formée une surface d'accouplement correspondante.
  2. Coupleur rapide selon la revendication 1, caractérisé en ce que l'angle de conicité est ≤ 10° et de préférence ≤ 5° selon les axes longitudinaux des accouplements.
  3. Coupleur rapide selon la revendication 1 ou 2, caractérisé en ce que les accouplements présentent au moins une troisième paire de surfaces d'accouplement correspondante par laquelle des forces de traction peuvent être transmises à l'état accouplé.
  4. Coupleur rapide selon la revendication 3, caractérisé en ce que la première paire de surfaces est disposée avec des surfaces dans une première position relative des accouplements entre eux et la troisième paire de surfaces d'accouplement est disposée adjacente dans une deuxième position relative.
  5. Coupleur rapide selon la revendication 4, caractérisé en ce que la deuxième paire de surfaces d'accouplement est disposée adjacente dans les deux positions relatives.
  6. Coupleur rapide selon l'une des revendications précédentes, caractérisé en ce qu'il soit amovible en pivotant tout d'abord les accouplements l'un par rapport à l'autre puis en tournant au moins un des accouplements autour de son axe longitudinal.
  7. Coupleur rapide selon l'une des revendications précédentes, caractérisé en ce qu'une ouverture transversale réceptionne une clavette dans un des accouplements, une force étant exercée sur l'autre accouplement en enfonçant la clavette pour relâcher le serrage.
  8. Tige de forage avec plusieurs tronçons de tige (1), qui sont raccordées en partie au moins par un coupleur rapide selon l'une des revendications précédentes,
  9. Tige de forage selon la revendication 8, caractérisée en ce que son extrémité avant est prévue avec une surface de commande en biais.
  10. Tige de forage selon la revendication 8 ou 9, caractérisée en ce que le tronçon de tige le plus en avant (1) est prévu avec un capteur de localisation.
  11. Tige de forage selon l'une des revendications 8 à 10, caractérisée en ce que les tronçons de tige (1) sont en forme tubulaire au moins par tronçon.
  12. Tige de forage selon l'une des revendications 8 à 11, caractérisée en ce que les tronçons de tige (1) présentent une marque pour déterminer le roulage.
EP10008881.4A 2009-08-28 2010-08-26 Raccord enfichable pour tiges de sondage Active EP2299049B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102009039020 2009-08-28
DE102009052335A DE102009052335A1 (de) 2009-08-28 2009-11-07 Steckkupplung für ein Bohrgestänge und Bohrgestänge

Publications (3)

Publication Number Publication Date
EP2299049A2 EP2299049A2 (fr) 2011-03-23
EP2299049A3 EP2299049A3 (fr) 2016-07-27
EP2299049B1 true EP2299049B1 (fr) 2017-12-20

Family

ID=43525287

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10008881.4A Active EP2299049B1 (fr) 2009-08-28 2010-08-26 Raccord enfichable pour tiges de sondage

Country Status (3)

Country Link
US (1) US8443917B2 (fr)
EP (1) EP2299049B1 (fr)
DE (1) DE102009052335A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009038383B4 (de) 2009-08-24 2014-10-16 Tracto-Technik Gmbh & Co. Kg Rammbohrvorrichtung
DE102011100186A1 (de) * 2011-05-02 2012-11-08 Tracto-Technik Gmbh & Co. Kg "Gestänge und Vorrichtung zum grabenlosen Sanieren von Rohrleitungen"
EP3397831A2 (fr) * 2016-03-29 2018-11-07 Herrenknecht AG Tube de forage ainsi que système et procédé de pose d'une canalisation

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US1658264A (en) * 1926-03-16 1928-02-07 Walter A Sutton Sucker-rod coupling
CH223733A (de) * 1940-03-13 1942-10-15 Meutsch Voigtlaender & Co Vorm Gesteinsschlagbohrer mit auswechselbarem Bohrkopf.
US2267904A (en) * 1940-11-29 1941-12-30 Torrington Mfg Co Shaft coupling
US2396747A (en) * 1944-06-21 1946-03-19 Parrott Fleming Rock drill
US3585803A (en) * 1968-11-15 1971-06-22 Exxon Production Research Co Pile splice
CH603990A5 (en) * 1976-04-07 1978-08-31 Sandvik Ab Percussion drill bit with one or more cutting edges
DE3533929A1 (de) * 1985-05-07 1986-11-13 Geißler & Kuper GmbH Diamantwerkzeug - Wiederaufbereitung, 3100 Celle Diamantbohrkrone mit schaftrohr und rohrgewindeanschluss
CN2075693U (zh) * 1990-09-28 1991-04-24 冯建国 地质岩心钻探安全接手
DE19725628C1 (de) * 1997-06-17 1999-03-04 Tracto Technik Bohrvorrichtung
US7147065B2 (en) * 2003-01-14 2006-12-12 Tt Technologies, Inc. Connection design and sonde housing assembly for a directional drill
DE20303596U1 (de) 2003-03-05 2003-07-10 Tracto Technik Rohrführungsadapter
EP1769131B1 (fr) 2004-07-06 2011-11-16 Tracto-Technik GmbH Tete de forage d'un engin a forer le sol
US7942218B2 (en) * 2005-06-09 2011-05-17 Us Synthetic Corporation Cutting element apparatuses and drill bits so equipped
PL1948900T3 (pl) 2005-11-11 2013-03-29 Tracto Technik Urządzenie wiertnicze do gruntu
AU2006314836B2 (en) 2005-11-16 2010-09-30 Tracto-Technik Gmbh Hammer drilling device with a pneumatic reversing gear
DE102006033753B4 (de) 2005-11-21 2015-03-12 Tracto-Technik Gmbh System und Verfahren zum Spannen von Strangabschnitten zu einem Strang
FR2894279B1 (fr) * 2005-12-06 2010-08-27 Francois Kessler Ensemble a raccord pour masse-tiges ou tiges lourdes de forage
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DE102006045557B4 (de) 2006-09-25 2009-06-18 Tracto-Technik Gmbh Gestängemitnehmer
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DE102007016823A1 (de) 2007-04-05 2008-11-06 Tracto-Technik Gmbh & Co. Kg Bohrsystem
DE102007016822B4 (de) 2007-04-05 2009-01-15 Tracto-Technik Gmbh & Co. Kg Gestängekupplung mit Zapfen
EP2145075A2 (fr) 2007-04-05 2010-01-20 Tracto-Technik GmbH & Co.KG Accouplement de train de tiges à élément sacrificiel
DE102007054472B4 (de) 2007-11-13 2010-04-15 Tracto-Technik Gmbh & Co. Kg Geothermiesystem

Non-Patent Citations (1)

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Title
None *

Also Published As

Publication number Publication date
US20110209920A1 (en) 2011-09-01
US8443917B2 (en) 2013-05-21
EP2299049A2 (fr) 2011-03-23
DE102009052335A1 (de) 2011-03-03
EP2299049A3 (fr) 2016-07-27
DE102009052335A8 (de) 2011-06-01

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