EP1117897B1 - Train de sonde pour realiser un forage par rotation-percussion, notamment pour forage a tubage de sonde simultane - Google Patents

Train de sonde pour realiser un forage par rotation-percussion, notamment pour forage a tubage de sonde simultane Download PDF

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Publication number
EP1117897B1
EP1117897B1 EP98954318A EP98954318A EP1117897B1 EP 1117897 B1 EP1117897 B1 EP 1117897B1 EP 98954318 A EP98954318 A EP 98954318A EP 98954318 A EP98954318 A EP 98954318A EP 1117897 B1 EP1117897 B1 EP 1117897B1
Authority
EP
European Patent Office
Prior art keywords
thread
connection system
external
drill pipes
threads
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.)
Expired - Lifetime
Application number
EP98954318A
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German (de)
English (en)
Other versions
EP1117897A1 (fr
Inventor
Friedrich Flemming
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.)
Boart Longyear GmbH and Co KG
Original Assignee
Boart Longyear GmbH and Co KG Hartmetallwerkzeugfabrik
Boart Longyear 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.)
Filing date
Publication date
Application filed by Boart Longyear GmbH and Co KG Hartmetallwerkzeugfabrik, Boart Longyear GmbH and Co KG filed Critical Boart Longyear GmbH and Co KG Hartmetallwerkzeugfabrik
Publication of EP1117897A1 publication Critical patent/EP1117897A1/fr
Application granted granted Critical
Publication of EP1117897B1 publication Critical patent/EP1117897B1/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
    • E21B17/042—Threaded
    • E21B17/0426—Threaded with a threaded cylindrical portion, e.g. for percussion rods

Definitions

  • the present invention relates to a connection system for drill rods for rotary impact drilling, especially for Overlay drilling, with an external thread and a Internal thread, the profile of the external thread a flattened thread tip and a circular arc Has thread root, while the profile of the internal thread has an arcuate thread tip, and the external thread and the internal thread, respectively an unthreaded insertion section is in front of which the external or internal thread connects, and wherein a circumferential shoulder in the area of the external thread is trained.
  • connection system is from the utility model DE 297 21 748 U1 known.
  • the present invention is based on the object a connection system for drill pipe of the beginning to improve the type mentioned so that the aforementioned Disadvantages are largely eliminated.
  • the invention Connection system is characterized in that the external thread and the internal thread one each larger load-bearing flank and a smaller non-load-bearing flank Have flank, the profile of the Internal thread has a flat thread root, and where the non-load-bearing flank is each arc-shaped is formed and the same radius as the circular arc-shaped thread tip of the internal thread or like the arcuate thread base of the Has external thread.
  • connection system stands out due to a long service life, especially a minimal one Thread wear when connecting the provided Boring bars.
  • the design of its thread represents sure that self-locking even with larger ones Thread diameters is prevented.
  • the length is of the insertion section upstream of the external thread at least 0.3 to 0.35 times the outer diameter of the respective boring bar, the one of the external thread upstream insertion section preferably at least twice as long as the one upstream of the thread Introductory section is.
  • the circumferential shoulder is on a conical rod end with an external thread is undercut in the direction of the other rod end and the other rod end a complementary one Has end face.
  • the angle of inclination of the shoulder is preferably between 10 ° and 20 ° related to the radial plane there the respective boring bar.
  • Boring bars having the connection system according to the invention can be quickly and easily without self-locking connect and disconnect if the pitch angle of the External or internal thread over the entire size range the rods between 12 ° and 16 °, preferably between 12.3 ° and 15.8 °.
  • a further advantageous embodiment provides that the load-bearing flank of the thread by 25 ° to 35 ° is inclined relative to the central axis of the boring bar. This not only creates a relatively large touch area for the load-bearing flank, but also supports the Alignment of the threads when inserting the Threaded boring bar end in that corresponding end with an internal thread subsequent boring bar. In this way the Wear further minimized.
  • all Boring bars on the same thread depth that between 1.5 mm and 2.5 mm, preferably about 2 mm. This minimizes tool costs.
  • boring bars with respect to their outer and Inner diameter are graded so that a Boring bar of specified size inside one by two Larger boring bar is insertable.
  • a Boring bar of specified size inside one by two Larger boring bar is insertable.
  • To this Way can with the drill string according to the invention two or three telescopically arranged one inside the other Boring bars are drilled.
  • the maximum Outside diameter 1.15 to 1.55 times, preferably 1.25 to 1.45 times the minimum inside diameter.
  • the flank diameter of the external or internal thread has preferably a value in the range between 1 / 1.25 x AD and 1 / 1.05 x AD, where AD is for the outside diameter the boring bar is standing. This ensures that Boring bars in next largest size boring bars can be introduced and yet sufficient Have strength because the cross-sectional area of the Boring bars are at the inner end of the internal thread larger with increasing outside diameter of the boring bars.
  • the cross-sectional area on inner end of the internal thread is larger than that Cross-sectional area at the inner end of the External thread, as for boring bars in which the Impact effect is transmitted via the outer shoulder, the the internally threaded end of a higher one Bending stress is subject to that than the external thread having end.
  • the radius of the circular arc of the non-load-bearing flank one Value in the range between 3.2 mm and 4.5 mm, preferably about 3.8 mm.
  • the radius of the circular arc is for the entire size range of the boring bars maintained. This configuration, together with the unchangeable flank angle and the unchangeable Thread depth ensures that the same Tapping tool for the entire size range of Boring bars can be used.
  • Another preferred embodiment is thereby characterized in that the number of threads with increases the outside diameter of the boring bar.
  • boring bars with an outer diameter less than 75 mm a thread, boring bars with an outer diameter between 75 mm and 105 mm two Threads, boring bars with an outer diameter between 105 mm and 140 mm three threads and Boring bars with an outer diameter larger than 140 mm have four threads. This also helps increasing outside diameter of the boring bars Enlargement of the load-bearing area of the Thread flanks achieved. This ensures that when using the same thread profile for the the entire size range of the boring bars Pitch angle not excessive with increasing Outside diameter (AD) changes.
  • AD Outside diameter
  • FIG. 1a and 1b show the ends of a boring bar with a cylindrical external thread 1 and a corresponding internal thread 2 in longitudinal section.
  • the Boring bar ends each have a threadless Insertion section 3 or 4, to which the respective Thread connects.
  • the length of the external thread 1 upstream insertion section 3 is approximately 0.3 up to 0.35 times the outside diameter AD of the boring bar and is about twice as long as that of the internal thread 2 upstream insertion section 4.
  • a circumferential outer shoulder 5 is that of transferring the impact to a subsequent boring bar or the drill bit is used.
  • the Shoulder 5 is conical, with one Angle of inclination of about 15 ° to the radial plane, the other boring bar end being a complementary one has bevelled end face 6.
  • To be telescopically arranged with two or more To be able to drill boring bars are the boring bars in terms of their outer and inner diameters graded so that a boring bar of a given size inside a boring bar two sizes bigger can be introduced.
  • For boring bars with one Outside diameter AD is between 75 and 180 mm maximum outer diameter AD of a boring bar about 1.15 to 1.55 times their minimum ID ID.
  • the flank diameter FD of the External or internal thread is between 1 / 1.25 x AD and 1 / 1.05 x AD.
  • the cross-sectional area thus increases inner end of the internal thread 2 with increasing Boring bar outside diameter AD too. It can also be seen that the cross-sectional area at the inner end of the Internal thread 2 is larger than the cross-sectional area on inner end of the external thread 1.
  • the most inner end of the internal thread 2 adjacent Section 8 and the corresponding Section 7 of the External thread 1 have essentially the same Wall thickness WA or WI, the inside diameter ID the conical boring bar in the direction of the internal thread 2 expands.
  • Figures 2a and 2b show an enlarged view the thread profile of the drill pipe according to the invention.
  • the external thread 1 and the internal thread 2 each have a load-bearing outer flank 9 and a non-load-bearing one Inner flank 10 on.
  • the external thread 1 pin thread
  • the internal thread 2 Socket thread
  • the load-bearing outer flank 9 is in each case one Angle ( ⁇ F of about 30 ° to the Boring bar center axis M inclined.
  • the non-load bearing Inner flank 10 is circular arc shaped and has the same radius R as the circular arc-shaped thread tip 13 of the Internal thread 2 or like the circular arc Thread root 12 of the external thread 1.
  • the radius R of the Circular arc is between 3.2 mm and 4.5 mm, preferably about 3.8 mm.
  • the transitions are from flat Thread base 14 to the thread flanks 9, 10 as Fillet fillets 15 formed.
  • the radius of this Fillet fillet 15 is approximately 1 mm.
  • the transitions 16 from the external thread 1 flattened thread tip 11 to the thread flanks 9, 10 circular arc-shaped rounded, the Radius of the circular arc corresponds to that of the fillet curves.
  • the thread depth of one Thread pitch is between 8.5 mm and 10.5 mm, preferably about 9.5 mm.
  • Fig. 3a is a side view schematically External thread shown, the pitch angle ( ⁇ 1 for a catchy thread is applied.
  • Fig. 3b is in Side view schematically shown an external thread, wherein the pitch angle ( ⁇ 2 for a two-start thread is registered.
  • the number of threads depends on the outside diameter the boring bar. Boring bars with an outer diameter For example, OD ⁇ 75 mm have a thread, during boring bars with an outer diameter AD ⁇ 75 mm and OD ⁇ 105 mm two threads, boring bars with one Outside diameter AD ⁇ 105 and AD ⁇ 140 mm three Threads and boring bars with an outer diameter AD> 140 mm have four threads.
  • the thread profile the boring bars not only cylindrical but also be conical.

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)

Claims (22)

  1. Système de liaison pour tiges de sondages utilisé pour le forage roto-percutant, notamment pour le sondage superposé, avec un filet extérieur (1) et un filet intérieur (2), le profil du filet extérieur (1) comportant un sommet du filet (11) aplati et un fond du filet (12) en forme d'arc circulaire tandis que le profil du filet intérieur (2) comporte un sommet du filet (13) en forme d'arc circulaire, un secteur d'introduction (3, 4) sans filetage étant respectivement disposé en amont du filet extérieur (1) et du filet intérieur (2) contigus à celui-ci, un épaulement (5) périphérique étant formé à la zone du filet extérieur (1),
    caractérisé en ce que
    les deux filets (1, 2) comportent chacun un flanc portant la charge (9) et un flanc (10), plus petit, ne portant pas de charge, le profil du filet intérieur (2) comportant un fond du filet (14) plat et le flanc ne portant pas de charge (10) étant conformé en forme d'arc circulaire de même rayon (R) que le sommet du filet (13) en forme d'arc circulaire du filet intérieur (2) ou que le fond du filet (12) en forme d'arc circulaire du filet extérieur (1).
  2. Système de liaison selon la revendication 1,
    caractérisé en ce que
    la longueur du secteur d'introduction (3) placé en amont du filet extérieur (1) est au moins 0,3 à 0,35 fois supérieure au diamètre extérieur (AD) de la tige de sondage respective.
  3. Système de liaison selon la revendication 1 ou 2,
    caractérisé en ce que
    la longueur du secteur d'introduction (3) placé en amont du filet extérieur (1) est au moins le double de celle du secteur d'introduction placé en amont du filet intérieur (2).
  4. Système de liaison selon l'une quelconque des revendications 1 à 3,
    caractérisé en ce qu'
    à une extrémité de la tige comportant le filet extérieur (1), l'épaulement périphérique (5) est en contre-dépouille conique.
  5. Système de liaison selon l'une quelconque des revendications 1 à 4,
    caractérisé en ce qu'
    à une extrémité de la tige comportant le filet extérieur (1), l'épaulement périphérique (5) est en contre-dépouille conique en direction de l'autre extrémité de tige, l'angle d'inclinaison étant compris entre 10° et 20° par rapport à un plan radial.
  6. Système de liaison selon l'une quelconque des revendications 1 à 5,
    caractérisé en ce que
    l'angle d'hélice des filets extérieur et intérieur (1, 2) est compris entre 12° et 16°.
  7. Système de liaison selon la revendication 6,
    caractérisé en ce que
    l'angle d'hélice des filets extérieur et intérieur (1, 2) est compris entre 12,3° et 15,8°.
  8. Système de liaison selon l'une quelconque des revendications 1 à 7,
    caractérisé en ce que
    les flancs (9) portant la charge sont, respectivement, les flancs extérieurs des filets (1, 2) dirigés vers l'extrémité la plus proche de la tige de sondage.
  9. Système de liaison selon l'une quelconque des revendications 1 à 8,
    caractérisé en ce que
    chaque flanc (9) portant la charge des filets (1, 2) est incliné de 25° à 35° par rapport à l'axe médian (M) de la tige de sondage.
  10. Système de liaison selon l'une quelconque des revendications 1 à 9,
    caractérisé en ce que
    la profondeur (GT) du filet des tiges de sondage est comprise entre 1,5 mm et 2,5 mm, et qu'elle est de préférence d'environ 2 mm.
  11. Système de liaison selon l'une quelconque des revendications 1 à 10,
    caractérisé en ce que
    les tiges de sondage ont des diamètres extérieurs et intérieurs graduants de telle sorte qu'une tige de sondage de taille donnée est apte à s'emboíter dans une tige de sondage de deux tailles plus grande.
  12. Système de liaison selon l'une quelconque des revendications 1 à 11,
    caractérisé en ce que,
    dans le cas de tiges de sondage d'un diamètre extérieur (AD) compris entre 75 mm et 180 mm, le diamètre extérieur est de 1,15 à 1,55 fois, de préférence de 1,25 à 1,45 fois plus grand que son plus petit diamètre intérieur.
  13. Système de liaison selon l'une quelconque des revendications 1 à 12,
    caractérisé en ce que
    le diamètre des flancs (FD) des filets extérieur et intérieur est compris entre 1/1,25 x AD et 1/1,05 x AD, AD étant mis pour le diamètre extérieur de la tige de sondage.
  14. Système de liaison selon l'une quelconque des revendications 1 à 13,
    caractérisé en ce que
    l'aire de la section transversale à l'extrémité intérieure du filet intérieur (2) est supérieure à l'aire de la section transversale à l'extrémité intérieure du filet extérieur (1).
  15. Système de liaison selon l'une quelconque des revendications 1 à 14,
    caractérisé en ce que
    le rayon (R1) de l'arc circulaire du flanc (10) ne portant pas de charge est compris entre 3,2 mm et 4,5 mm, et qu'il est de préférence d'environ 3,8 mm.
  16. Système de liaison selon l'une quelconque des revendications 1 à 15,
    caractérisé en ce que
    le filet extérieur (1) et le filet intérieur (2) sont conformés en forme de filetage à plusieurs filets.
  17. Système de liaison pour train de tiges selon la revendication 16,
    caractérisé en ce que
    le nombre de filets augmente avec le diamètre extérieur de la tige de sondage.
  18. Système de liaison selon la revendication 17,
    caractérisé en ce que
    les tiges de sondage d'un diamètre inférieur à 75 mm présentent un filet, les tiges de sondage d'un diamètre extérieur supérieur ou égal à 75 mm et inférieur à 105 mm en présentent deux, les tiges de sondage d'un diamètre extérieur supérieur ou égal à 105 mm et inférieur à 140 mm , trois et les tiges de sondage d'un diamètre extérieur supérieur à 140 mm, quatre.
  19. Système de liaison selon l'une quelconque des revendications 1 à 18,
    caractérisé en ce que
    la transition du fond du filet (14) du filet intérieur (2) par rapport aux flancs (9, 10) est conformée en forme de gorge arrondie (15) d'un rayon d'environ 1 mm.
  20. Système de liaison selon l'une quelconque des revendications 1 à 19,
    caractérisé en ce que
    la transition du sommet du filet aplati (11) du filet extérieur (1) par rapport aux flancs (9, 10) est arrondie en forme d'arc circulaire d'un rayon d'environ 1 mm.
  21. Système de liaison selon l'une quelconque des revendications 1 à 20,
    caractérisé en ce que
    les filets (1, 2) sont conformés en forme cylindrique.
  22. Système de liaison selon l'une quelconque des revendications 1 à 20,
    caractérisé en ce que
    les filets (1, 2) sont conformés en forme conique.
EP98954318A 1998-10-01 1998-10-01 Train de sonde pour realiser un forage par rotation-percussion, notamment pour forage a tubage de sonde simultane Expired - Lifetime EP1117897B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP1998/006264 WO2000020720A1 (fr) 1998-10-01 1998-10-01 Train de sonde pour realiser un forage par rotation-percussion, notamment pour forage a tubage de sonde simultane

Publications (2)

Publication Number Publication Date
EP1117897A1 EP1117897A1 (fr) 2001-07-25
EP1117897B1 true EP1117897B1 (fr) 2004-05-12

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP98954318A Expired - Lifetime EP1117897B1 (fr) 1998-10-01 1998-10-01 Train de sonde pour realiser un forage par rotation-percussion, notamment pour forage a tubage de sonde simultane

Country Status (6)

Country Link
EP (1) EP1117897B1 (fr)
JP (1) JP3961769B2 (fr)
KR (1) KR100556271B1 (fr)
AT (1) ATE266796T1 (fr)
DE (1) DE59811400D1 (fr)
WO (1) WO2000020720A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016018997A1 (fr) * 2014-07-31 2016-02-04 Baker Hughes Incorporated Profil de filet résistant à la fatigue ayant une combinaison d'arrondi et de courbe
US11230891B2 (en) 2015-08-27 2022-01-25 Diversity Technologies Corporation Threaded joint

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006019396B4 (de) * 2006-04-24 2014-10-16 Tracto-Technik Gmbh Bohrgestänge
DE102006062882B4 (de) * 2006-04-24 2013-03-28 Tracto-Technik Gmbh Bohrgestänge
FR2969738B1 (fr) 2010-12-28 2016-03-25 Vallourec Mannesmann Oil & Gas Joint filete pour le forage et l'exploitation des puits d'hydrocarbures
US9850723B2 (en) 2011-01-26 2017-12-26 Bly Ip Inc. Drill string components having multiple-thread joints
US10557316B2 (en) 2011-01-26 2020-02-11 Bly Ip Inc. Drill string components having multiple-thread joints
US9810029B2 (en) 2011-01-26 2017-11-07 Bly Ip Inc. Drill string components resistant to jamming
EP2653706A1 (fr) 2012-04-20 2013-10-23 Caterpillar Motoren GmbH & Co. KG Surveillance du système d'injection de carburant de moteurs bicarburants
JP6137115B2 (ja) * 2014-10-27 2017-05-31 Ｊｆｅスチール株式会社 鋼管の接合継手
US10041307B2 (en) 2015-01-22 2018-08-07 National Oilwell Varco, L.P. Balanced thread form, tubulars employing the same, and methods relating thereto
DE202015104842U1 (de) 2015-09-11 2015-09-18 Sysbohr Gmbh - Bohrtechnik Für Den Spezialtiefbau Gewindeverbindung und Bohrgestänge mit Gewindeverbindung
PL3712374T3 (pl) 2019-03-18 2023-01-16 Sandvik Mining And Construction Tools Ab Żerdź przewodu wiertniczego

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1173046B (de) * 1958-12-30 1964-07-02 Boehler & Co Ag Geb Verbindung der Bohrstangen von Schlagbohrgeraeten
US4799844A (en) * 1988-01-11 1989-01-24 Trw Inc Elliptical thread design
DE19803304C5 (de) * 1997-05-29 2010-09-30 Boart Longyear Gmbh & Co. Kg Hartmetallwerkzeugfabrik Bohrgestänge zum Drehschlagbohren, insbesondere zum Überlagerungsbohren
DE29721748U1 (de) * 1997-12-09 1998-01-29 Bauer Spezialtiefbau Bodenbearbeitungswerkzeug

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016018997A1 (fr) * 2014-07-31 2016-02-04 Baker Hughes Incorporated Profil de filet résistant à la fatigue ayant une combinaison d'arrondi et de courbe
US11230891B2 (en) 2015-08-27 2022-01-25 Diversity Technologies Corporation Threaded joint

Also Published As

Publication number Publication date
ATE266796T1 (de) 2004-05-15
EP1117897A1 (fr) 2001-07-25
JP3961769B2 (ja) 2007-08-22
KR20010106500A (ko) 2001-11-29
WO2000020720A1 (fr) 2000-04-13
DE59811400D1 (de) 2004-06-17
JP2002526701A (ja) 2002-08-20
KR100556271B1 (ko) 2006-03-03

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