EP1305497A1 - Rod linkage - Google Patents
Rod linkageInfo
- Publication number
- EP1305497A1 EP1305497A1 EP01945316A EP01945316A EP1305497A1 EP 1305497 A1 EP1305497 A1 EP 1305497A1 EP 01945316 A EP01945316 A EP 01945316A EP 01945316 A EP01945316 A EP 01945316A EP 1305497 A1 EP1305497 A1 EP 1305497A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- drill pipe
- pipe coupling
- connection
- coupling according
- nipple
- 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
Links
- 230000008878 coupling Effects 0.000 claims description 28
- 238000010168 coupling process Methods 0.000 claims description 28
- 238000005859 coupling reaction Methods 0.000 claims description 28
- 210000002445 nipple Anatomy 0.000 claims description 17
- 230000005540 biological transmission Effects 0.000 description 6
- 238000005553 drilling Methods 0.000 description 5
- 238000005452 bending Methods 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
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 rod coupling, as is known for connecting the rod sections of devices for trenchless laying or replacement of pipelines, and claims the priority of the German utility model 200 12 524.9, to which reference is made in terms of content.
- boom sections are lined up, connected to each other and moved with the help of a feed device with a jacking head through the soil.
- the boom sections can only have a small overall length, so that the drilling operation, for example for creating a pilot hole, is characterized by a constant connection of the boom sections to form an overall boom.
- a torque transmission via the rod during drilling affects the tightening angle and the tightening torque of the threaded connection in such a way that the connection is tightened more firmly and thus considerable problems occur when loosening the rod sections. Due to the high forces to be applied when loosening, accidents and injuries to the personnel sometimes occur when operating the various known loosening devices. Depending on the boom size, the connection can then only be released mechanically.
- the invention has for its object to provide a linkage that allows good impact and torque transmission, avoids axial play and is still easy to connect and solve.
- the invention is based on the idea of combining the advantages of the backlash free play of the threaded connection and the advantageous torque transmission of a positive connection in a single coupling by fixing a positive connection via an additional threaded connection.
- Such a connection ensures a simple coupling of the rod sections, for example by inserting a pin into a blind hole and a simple fixing of the connection, for example by tightening a union nut connecting the two rod sections.
- the result is a defined and reliable torque transmission through the positive locking of the pin or nipple and blind hole, a reliable essentially play-free fixing of the pin in the blind hole by the union nut and thus a loss-free impact transmission via the end face of the pin is guaranteed.
- the tensile forces which are usually considerably lower than the impact forces, such as occur when the boom is pulled back, are Mother reliably recorded and forwarded without changing the tightening torque, since the rotation is transmitted via the pin connection.
- the union nut can have different dimensions. In any case, it does not have to absorb impact energy or torque.
- connection not only results in an improved breaking strength of the connection, but also a defined and not excessively large tightening torque of the threaded portion of the connection, which can remain low due to the lower acting forces and thus leads to an easier releasability of the connection.
- the connection is preferably designed as a plug connection of a nipple arranged at one end of the rod with a corresponding sleeve at the other end of the rod.
- the nipple deviates from a circular cross section and is particularly preferably designed as a rounded polygon nipple with different radii.
- the corresponding polygon socket corresponds to this. The interaction between the nipple and the socket transmits the torque via the curved side wall surfaces, while the impact energy flows into the connected rod via the end surface of the nipple on the socket side.
- Fig. 2 is a view of the coupling nipple
- FIG. 3 shows a section along the line III-III of FIG. 2;
- Fig. 4 is a view of the sleeve according to the invention.
- a rod section 1 with a through hole 14 for the transport of a drilling fluid has coupling means 10, 15 at its ends.
- the coupling means 10, 15 consist of a coupling nipple 10 arranged at the end and an opposite coupling sleeve 15 in the form of a blind hole.
- the cross section of the coupling nipple 10, like the coupling sleeve 15, is polygonal.
- the polygon is designed as a combination of a total of eight circular arc segments 21, 22 with a total of two alternately arranged radii.
- the side surface of the polygon is formed by the four circular arc segments of the larger radius and the original edges of the polygon as an arc segment of the smaller radii. This allows an improved flow of force compared to a conventional surface / edge polygon without foregoing a positive connection.
- the nipple 10 is pushed into the socket-like sleeve 15 until the end face 16 of the nipple concentrically comes to rest against the bottom surface 17 of the socket-like polygon socket 15 with the aid of a nipple centering 11 and a collar centering 8.
- the rod section has in the area of the coupling nipple a union nut 4 with an internal thread which corresponds to an external thread on the outer surface of the connecting sleeve or the socket-side end of the rod section.
- the union nut 4 is pushed axially onto the pocket-like coupling sleeve 15 and screwed to its thread. This creates a backlash-free connection without use of tool over a shoulder 20 in the area of the nipple 10 of the rod section 1.
- the coupling is secured by a seal 3 against the escape of drilling fluid flowing in the central bore 14.
- the end face 16 rests on the bottom 17 of the blind hole-like sleeve 15 in such a way that a thrust and, in particular, an impact force is transmitted through these surfaces between the rod sections.
- a torque acting on the linkage is conducted via the polygonal contact surface between the blind hole-like connecting sleeve 15 and the connecting nipple 10, while the union nut 4 merely acts as a fixation to ensure an axial play-free connection and to transmit tensile forces.
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)
- Drilling Tools (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE20012524U | 2000-07-20 | ||
| DE20012524U DE20012524U1 (en) | 2000-07-20 | 2000-07-20 | Linkage coupling |
| PCT/EP2001/007321 WO2002008565A1 (en) | 2000-07-20 | 2001-06-27 | Rod linkage |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1305497A1 true EP1305497A1 (en) | 2003-05-02 |
| EP1305497B1 EP1305497B1 (en) | 2006-01-11 |
Family
ID=7944151
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP01945316A Expired - Lifetime EP1305497B1 (en) | 2000-07-20 | 2001-06-27 | Rod linkage |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP1305497B1 (en) |
| AU (1) | AU2001267569A1 (en) |
| DE (2) | DE20012524U1 (en) |
| WO (1) | WO2002008565A1 (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE20012524U1 (en) | 2000-07-20 | 2000-09-21 | Tracto-Technik GmbH Spezialmaschinen, 57368 Lennestadt | Linkage coupling |
| EP1947375A1 (en) * | 2007-01-16 | 2008-07-23 | Siemens Aktiengesellschaft | Pipe connection |
| US20100044113A1 (en) * | 2008-08-22 | 2010-02-25 | Coiled Tubing Rental Tools, Inc. | Connection for well bore drilling tools |
| US8869917B2 (en) | 2011-06-22 | 2014-10-28 | Coiled Tubing Rental Tools, Inc. | Housing, mandrel and bearing assembly for downhole drilling motor |
| DE102018107507A1 (en) * | 2018-03-28 | 2019-10-02 | Voss Automotive Gmbh | "Connecting device for media lines" |
| EP3608572B1 (en) * | 2018-08-10 | 2023-05-17 | R. Nussbaum AG | Pipe connection |
| DE102018008533A1 (en) * | 2018-10-31 | 2020-04-30 | Tracto-Technik Gmbh & Co. Kg | Boom shot of an earth drill pipe |
| CN111794695B (en) * | 2020-08-26 | 2022-03-29 | 辽宁工程技术大学 | Seismic exploration equipment capable of being in butt joint with drilling rod quick-connection structure for seismic exploration |
| EP4086426A1 (en) | 2021-05-03 | 2022-11-09 | TRACTO-TECHNIK GmbH & Co. KG | Rod lacing of a borehole rod |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2294004A (en) * | 1940-09-25 | 1942-08-25 | Serafino Louis | Demountable drill bit |
| US4206821A (en) * | 1978-09-08 | 1980-06-10 | Fansteel Inc. | Roof drill and drill rod system |
| DE3812211A1 (en) * | 1988-04-13 | 1989-11-02 | Preussag Ag Bauwesen | Screw-connections for riser pipes for pumps in wells |
| DE29900952U1 (en) * | 1998-02-12 | 1999-04-15 | Weinhold, Karl, Dipl.-Ing., 41464 Neuss | Coupling for pipes or hoses |
| DE19846373B4 (en) | 1998-10-08 | 2004-03-04 | Suspa Compart Ag | damper |
| WO2000066929A1 (en) * | 1999-04-29 | 2000-11-09 | Grant Prideco, Inc. | Rotationally locked tool joint for connecting drill pipe sections together |
| NO310372B1 (en) * | 1999-08-02 | 2001-06-25 | Bakke Technology As | Shared coupling device with through bore |
| DE20012524U1 (en) | 2000-07-20 | 2000-09-21 | Tracto-Technik GmbH Spezialmaschinen, 57368 Lennestadt | Linkage coupling |
-
2000
- 2000-07-20 DE DE20012524U patent/DE20012524U1/en not_active Expired - Lifetime
-
2001
- 2001-06-27 EP EP01945316A patent/EP1305497B1/en not_active Expired - Lifetime
- 2001-06-27 AU AU2001267569A patent/AU2001267569A1/en not_active Abandoned
- 2001-06-27 DE DE50108677T patent/DE50108677D1/en not_active Expired - Lifetime
- 2001-06-27 WO PCT/EP2001/007321 patent/WO2002008565A1/en not_active Ceased
Non-Patent Citations (1)
| Title |
|---|
| See references of WO0208565A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| DE50108677D1 (en) | 2006-04-06 |
| WO2002008565A1 (en) | 2002-01-31 |
| EP1305497B1 (en) | 2006-01-11 |
| AU2001267569A1 (en) | 2002-02-05 |
| DE20012524U1 (en) | 2000-09-21 |
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| RBV | Designated contracting states (corrected) |
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