EP1144797B1 - Verfahren zum anbringen eines futterrohrschuhs an einer bohrvorrichtung - Google Patents

Verfahren zum anbringen eines futterrohrschuhs an einer bohrvorrichtung Download PDF

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Publication number
EP1144797B1
EP1144797B1 EP98955619A EP98955619A EP1144797B1 EP 1144797 B1 EP1144797 B1 EP 1144797B1 EP 98955619 A EP98955619 A EP 98955619A EP 98955619 A EP98955619 A EP 98955619A EP 1144797 B1 EP1144797 B1 EP 1144797B1
Authority
EP
European Patent Office
Prior art keywords
shoe
drilling apparatus
groove
shrunk
shoulder
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
EP98955619A
Other languages
English (en)
French (fr)
Other versions
EP1144797A1 (de
Inventor
Valto ILOMÄKI
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.)
Tercope Finland Oy
Original Assignee
Atlas Copco Rotex Oy AB
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
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Application filed by Atlas Copco Rotex Oy AB filed Critical Atlas Copco Rotex Oy AB
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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
    • E21B17/14—Casing shoes for the protection of the bottom of the casing
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49826—Assembling or joining
    • Y10T29/49908—Joining by deforming

Definitions

  • the invention relates to the mounting of a casing shoe around a cylindrical drilling apparatus.
  • the drill can rotate with respect to the ring and also move axially determined by the groove.
  • the ring is formed of two halves by welding in the groove as a complete ring, further the ring is welded on the casing or the shoe.
  • the ring to be fitted in the groove must be of made two halves so that it can be installed in the groove, or the whole shoe must be cleaved longitudinally as equal halves and welded together around the drilling apparatus in order to produce a shoulder to restrict axial motions.
  • a revolving-nut tubular connector which is particularly meant for coupling of flexible hoses and the like.
  • This connector is formed of a nipple fitting with a shoulder for the abutment of the ring for locking the flexible hose on said nipple.
  • the connector has a conventional revolving nut for locking the sealing head of the nipple body on the end of the tube or nozzle of a user device.
  • Said nut has, in a rearward position, on annular rim or lip that protrudes coaxially from the threaded cavity and has such dimensions as to allow its insertion on the nipple and its subsequent partial deformation by pressing, after fitting on the tubular nipple body, so as to reduce its diameter and thus create a mechanical retention element that acts as a spacer between the nut and said shoulder of the nipple.
  • the above connector is thus meant for coupling of flexible hoses, and so, making axially locked couplings by this kind of connectors does not give any advice in practice for the kind of mounting methods needed for coupling of drilling parts of a drilling head with each other.
  • the shoe has no welds, since the shoulder in the shoe, is produced by turning or shaping.
  • the method solves all problems and the method is characterized in what is presented in the patent claims.
  • the advantage of the invention is a fast and dependable assembly resulting in a circular shoe. Deformations due to welding are avoided and since the shoulder is produced by turning, it can be made to match exactly the counterface in the groove in the drilling apparatus.
  • Figure 1 is a drilling apparatus furnished with a transverse groove 9, into which the shoulder 8 of the shoe 4 is to be fitted. Further, the whole shoe 4 should be shrunk to a diameter size distinctively smaller than the outer diameter size Du of the drilling apparatus 2, so that the shoe could advance in the drilled bore-hole.
  • the casing to be pulled into the borehole is welded as a butted joint or a lap joint in the rear edge of the shoe.
  • the shoe is turned to such a diameter that it can be slid into a position around the drilling apparatus as shown in figure 1.
  • a two-piece ring as per figure 3 is placed, which by means of a joint 7 can be both fitted in and taken off the groove 9.
  • a Tool 5 is a shrinking tool comprised of a conical portion 6 that causes the shrinking of the shoe.
  • a rammer 1 By means of a rammer 1, the drilling apparatus and the shoe are pressed, as shown in Figure 1; into the tool 5 till shoe 4 is essentially in the cylindrical portion Ds of the tool.
  • the the shoe is shrunk to a diameter of size Ds, fitted to be distinctively smaller than a diameter Du, which is the diameter of the drilling apparatus and also the borehole diameter.
  • shrinking can be carried out by pushing the drilling apparatus 2 downwards, whereby, in spite of its bigger diameter, the drilling apparatus does not yet reach the conical surface 6 of the tool 5, even though the shoe 4 has not fully passed the conical surface. Pushing can be stopped at this point and the shoe and the drilling apparatus can be pushed back from the tool. Shoe 4 has thus become formed through shrinking to its diameter size Ds and axially locked by means of the shoulder 8 into the groove 9, and so the joint is ready.
  • the shoe shrinkage is produced by a tool that is dimensioned so that after shrinking there will remain a clear sliding fit between the shoe an the drilling apparatus.
  • the sliding fit allows mutual rotation and axial motion between the shoe and the drilling apparatus.
  • the shoulder 8 is locked axially in the groove 9 to endure loads caused by pulling the casing.
  • Figure 4 shows the shrinking of the shoe 4 by multi-jaw squeezing with the shoe in proper position around the drilling apparatus.
  • the Shoulder 8 takes thus its place in the groove 9.
  • the shoe is shrunk approx. 2 to 8 % of the diameter in the embodiment, where the shoe retains it form during shrinking. Usually, the shoe is then shrunk all over. If the shoe is formed beforehand to a smaller diameter as to its rear edge, the shoe is shrunk at least on the portion, where the shoulder is formed. Shrinking of the shoe elsewhere is then not necessary.

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)

Claims (6)

  1. Verfahren zum Anbringen eines Futterrohrschuhs (4) um eine zylindrische Bohrvorrichtung (2) herum, wobei der Schuh (4) und die Bohrvorrichtung (2) in montierter Position in der Lage sind, im Verhõltnis zueinander zu rotieren und sich axial im Verhõltnis zueinander eine bestimmte Strecke zu bewegen, wenn sich ein Absatz (8) im Schuh in einer Quernut (9) auf der Peripherie der Bohrvorrichtung befindet, wobei die Nut die Lõnge der freien gemeinsamen axialen Bewegung der gekoppelten Teile (2, 4) bestimmt, dadurch gekennzeichnet, dass der zylindrische Schuh (4) um die Bohrvorrichtung (2) herum geschrumpft wird, bis der Aussendurchmesser des Schuhs (4) kleiner wird als der Aussendurchmesser (Du) der Bohrvorrichtung (2) und der Absatz (8) im Schuh (4) axial in der Nut (9) blockiert.
  2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass der Schuh (4) sowie der in ihm befindliche Absatz (8) wõhrend des Schrumpfens ihre Form beibehalten.
  3. Verfahren nach Anspruch 1 und 2, dadurch gekennzeichnet, dass der Schuh (4) mittels mehrerer Spannschrauben (10), die entsprechend der Aussenflöche des Schuhs (4) geformt sind, geschrumpft wird.
  4. Verfahren nach Anspruch 1 und 2, dadurch gekennzeichnet, dass der Schuh (4) dadurch geschrumpft wird, dass er in ein Werkzeug (5) mit einem verkleinernden konischen Teil (6) gezwungen wird.
  5. Verfahren nach einem der vorstehenden Ansprüche 1 bis 4, dadurch gekennzeichnet, dass, um die Schrumpfphase auszuführen, ein abnehmbarer Ringaufbau (3) in der Nut (9) platziert wird und der besagte Aufbau den Schuhabsatz (8) steuert, so dass dieser am hintersten Rand der Nut (9) in Bezug auf die Bohrrichtung geschrumpft wird.
  6. Verfahren nach Anspruch 4 und 5, dadurch gekennzeichnet, dass wöhrend der Nutzung des Ringaufbaus (3) die Bohrvorrichtung (2) mit dem Schuh (4) in das konische Werkzeug (5) geschoben wird, bis die Grösse des Schuhs auf den gewünschten Durchmesser geschrumpft ist.
EP98955619A 1998-11-23 1998-11-23 Verfahren zum anbringen eines futterrohrschuhs an einer bohrvorrichtung Expired - Lifetime EP1144797B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/FI1998/000913 WO2000031373A1 (en) 1998-11-23 1998-11-23 A method for mounting a casing shoe on a drilling apparatus

Publications (2)

Publication Number Publication Date
EP1144797A1 EP1144797A1 (de) 2001-10-17
EP1144797B1 true EP1144797B1 (de) 2005-07-27

Family

ID=8556733

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98955619A Expired - Lifetime EP1144797B1 (de) 1998-11-23 1998-11-23 Verfahren zum anbringen eines futterrohrschuhs an einer bohrvorrichtung

Country Status (4)

Country Link
US (1) US20020033078A1 (de)
EP (1) EP1144797B1 (de)
DE (1) DE69831021T2 (de)
WO (1) WO2000031373A1 (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI20070540A0 (fi) * 2007-07-10 2007-07-10 Robit Rocktools Ltd Teräsovitelma
FI10639U1 (fi) * 2013-07-26 2014-10-09 Atlas Copco Rotex Ab Oy Uppoporauslaitteisto

Family Cites Families (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB813301A (en) 1956-06-29 1959-05-13 Schoeller Bleckmann Stahlwerke A drill pipe joint, particularly between drill stems
GB857630A (en) 1958-02-26 1961-01-04 American Iron & Machine Works Pipe connection
GB860768A (en) 1958-04-04 1961-02-08 Electrochimie Electrometallurg Improvements in or relating to a method of manufacturing rock and like drills and tosuch drills
GB1111593A (en) 1964-09-25 1968-05-01 Nat Res Dev Improvements in or relating to the securing of sleeves in cylinder bores
AT282258B (de) 1968-02-08 1970-06-25 Wizemann & Co J Stößelstange
DE2133525A1 (de) 1971-07-06 1973-01-25 Kloeckner Humboldt Deutz Ag Verfahren zur herstellung eines anschlussgewindes an rohrenden
US3792603A (en) 1972-07-26 1974-02-19 Glaenzer Spicer Sa Apparatus for assembling two parts into interlocked and interfitting relationship
NL175040C (nl) 1974-08-19 1984-09-17 Durofac Kartro As Booropneeminrichting voor een klopboormachine.
US4157122A (en) 1977-06-22 1979-06-05 Morris William A Rotary earth boring drill and method of assembly thereof
ZA8400569B (en) 1981-08-24 Stratoflex, Inc. Hose fitting and method of assembly
US4453854A (en) 1983-02-22 1984-06-12 Fansteel Inc. Unitized drill steel and method of manufacturing
FR2544645B1 (fr) 1983-04-20 1986-05-30 Cegedur Methode d'assemblage d'un element annulaire sur un tube metallique en aluminium ou un de ses alliages
FR2553690B1 (fr) 1983-10-21 1986-09-12 Cegedur Methode d'assemblage d'un tube mince dans une plaque ou un manchon
SE501988C2 (sv) * 1989-04-05 1995-07-10 Uniroc Ab Borrverktyg för borrning i jord och övertäckt berg
WO1990012237A1 (en) 1989-04-10 1990-10-18 Raychem Corporation Method of applying axial force between two objects
US5150636A (en) 1991-06-28 1992-09-29 Loudon Enterprises, Inc. Rock drill bit and method of making same
FR2687594B1 (fr) 1992-02-25 1994-04-08 Gec Alsthom Sa Procede de fixation d'une butee sur un tube et tube muni d'une butee realisee selon le procede.
SE9200563L (sv) 1992-02-25 1993-07-26 Oesten Edman Saett att utfoera borrning i jordlager samt slagsko foer saettet
FR2708055B1 (fr) 1993-07-19 1995-08-25 Inst Francais Du Petrole Dispositif de liaison pour tige composite.
US5441121A (en) 1993-12-22 1995-08-15 Baker Hughes, Inc. Earth boring drill bit with shell supporting an external drilling surface
SE9401349D0 (sv) 1994-04-21 1994-04-21 Atlas Copco Rocktech Ab Foderrör med slagsko
IT233462Y1 (it) 1994-06-02 2000-01-28 Hydrofit Spa Raccordo tubolare a dado girevole perfezionato, particolarmente per tubi flessibili oleodinamici e simili
WO1995034740A1 (en) * 1994-06-10 1995-12-21 Ilomaeki Valto Drilling apparatus
FI98400C (fi) * 1994-08-03 1997-06-10 Valto Ilomaeki Poralaite
FI945367A (fi) * 1994-11-14 1996-05-15 Valto Ilomaeki Porauslaitteen teräasetelma ja menetelmä porausjätteen poiskuljettamiseksi
FI96356C (fi) * 1994-12-13 1999-12-18 Valto Ilomaeki Porausmenetelmä ja teräasetelma menetelmän toteuttamiseksi
GB9504968D0 (en) 1995-03-11 1995-04-26 Brit Bit Limited Improved casing shoe
US5685057A (en) 1995-05-01 1997-11-11 Cbc Industries, Inc. Drill bushing assembly and method

Also Published As

Publication number Publication date
DE69831021T2 (de) 2006-04-20
DE69831021D1 (de) 2005-09-01
WO2000031373A1 (en) 2000-06-02
US20020033078A1 (en) 2002-03-21
EP1144797A1 (de) 2001-10-17

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