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WO2019073123A1 - Agencement et procédé d'installation de tubage - Google Patents

Agencement et procédé d'installation de tubage Download PDF

Info

Publication number
WO2019073123A1
WO2019073123A1 PCT/FI2018/050737 FI2018050737W WO2019073123A1 WO 2019073123 A1 WO2019073123 A1 WO 2019073123A1 FI 2018050737 W FI2018050737 W FI 2018050737W WO 2019073123 A1 WO2019073123 A1 WO 2019073123A1
Authority
WO
WIPO (PCT)
Prior art keywords
arrangement
borer
fastening means
casing
bar part
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.)
Ceased
Application number
PCT/FI2018/050737
Other languages
English (en)
Inventor
Jukka Ahonen
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.)
Mincon Nordic Oy
Original Assignee
Mincon Nordic Oy
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 Mincon Nordic Oy filed Critical Mincon Nordic Oy
Publication of WO2019073123A1 publication Critical patent/WO2019073123A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

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
    • E21B6/00—Drives for drilling with combined rotary and percussive action
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D7/00—Methods or apparatus for placing sheet pile bulkheads, piles, mouldpipes, or other moulds
    • E02D7/28—Placing of hollow pipes or mould pipes by means arranged inside the piles or pipes
    • E02D7/30—Placing of hollow pipes or mould pipes by means arranged inside the piles or pipes by driving cores
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D7/00—Methods or apparatus for placing sheet pile bulkheads, piles, mouldpipes, or other moulds
    • E02D7/26—Placing by using several means simultaneously
    • 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
    • E21B10/00—Drill bits
    • E21B10/26—Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers
    • 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
    • E21B10/00—Drill bits
    • E21B10/36—Percussion drill bits
    • 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
    • E21B10/00—Drill bits
    • E21B10/44—Bits with helical conveying portion, e.g. screw type bits; Augers with leading portion or with detachable parts
    • 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
    • E21B10/00—Drill bits
    • E21B10/44—Bits with helical conveying portion, e.g. screw type bits; Augers with leading portion or with detachable parts
    • E21B10/445—Bits with helical conveying portion, e.g. screw type bits; Augers with leading portion or with detachable parts percussion type, e.g. for masonry
    • 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
    • E21B7/00—Special methods or apparatus for drilling
    • E21B7/20—Driving or forcing casings or pipes into boreholes, e.g. sinking; Simultaneously drilling and casing boreholes
    • E21B7/201—Driving or forcing casings or pipes into boreholes, e.g. sinking; Simultaneously drilling and casing boreholes with helical conveying means
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
    • E02D5/72—Pile shoes
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D7/00—Methods or apparatus for placing sheet pile bulkheads, piles, mouldpipes, or other moulds
    • E02D7/22—Placing by screwing down

Definitions

  • the invention relates to an arrangement for installing a casing.
  • the invention further relates to a method for installing a casing.
  • a casing has inside it boring pipes, and at an end of the boring pipe, a percussion hammer, such as a down-the-hole-hammer, or DTH hammer.
  • a boring pipe has a centre opening through which compressed air required by the DTH hammer is fed to it.
  • a pipe drive crown, pilot crown, and a reamer is connected to the pilot crown by, for example, bayonet locking.
  • the boring pipe, DTH hammer, pilot crown and reamer connected to the latter are simultaneously rotated by a rotation mechanism at the top end of the boring pipe.
  • the boring of the hole takes place by means of the percussion function generated by the hammer, and the rotation of the boring pipe.
  • the purpose of the reamer is to broaden the hole made by the pilot crown so big that the casing fits into the drilled hole.
  • the casing may additionally have a so-called drill shoe by means of which the pilot crown pulls the casing with it into the drilled hole.
  • the removal of released material takes place by means of discharge air of the DTH hammer.
  • the casing may be installed in the ground by other methods, such as by pushing it in by its top end.
  • a vibrator is typically installed, producing vibration that enhances the insertion of the cas- ing.
  • the material that has pushed itself inside the casing is later removed by a scoop or borer designed for this.
  • the method has the following drawbacks.
  • Percussive drilling is a most efficient way to break hard material, but is not the best option for the removal of soft material, such as clay or silt.
  • Pushing or vibrating a casing into the ground is efficient in soft ground, but boulders or rock in the ground may stop the advance of the casing.
  • the material left inside the pipe has to be removed by a separate work phase.
  • inventive embodiments are also disclosed in the specification and drawings of this application.
  • inventive content of the application may also be defined differently than in the claims presented below.
  • inventive content may also consist of several separate inventions, particularly if the invention is examined in the light of disclosed or implicit subtasks or from the point of view of gained advantages or groups of advantages. In such a case, some of the definitions in the claims below may be irrelevant to the separate inventive ideas.
  • the features of the different embodiments of the invention may be applied to other embodiments within the scope of the basic inventive idea.
  • the advantage of the invention is that varied ground may be bored in an efficient way.
  • Figure 1 is a schematic view obliquely from above of a detail of an arrangement for installing a casing and having a bore
  • Figure 1 b is a schematic view of a detail of the arrangement in Figure 1 a in cross section
  • Figure 1 c is a schematic side view of the cross section of the arrangement in Figure 1 a
  • Figure 2a shows the arrangement of Figure 1 a provided with a percussion hammer in cross section from a side
  • Figure 2b is a schematic view of a detail of the arrangement in Figure 2a in cross section.
  • Figure 1 a is a schematic view obliquely from above, Figure 1 b in cross section, and Figure 1 c in cross section and from a side of a detail of an arrangement for installing a casing and having a bore.
  • the arrangement 100 comprises a casing 1 , which is a tubular piece installed in the ground, typically permanently.
  • a bar part 2 has been adapted inside it to be rotated inside the casing.
  • the bar part 2 comprise a screw-like wing 3 on its outer perim- eter, and third fastening means 10 arranged on the distal end 5 of the bar part, so the bottom end of the bar part.
  • the screw-like wings 3 lift the released material out of the casing 1 .
  • the removal of material may be enhanced by blowing air through an inner opening adapted in the bar part, to the bottom of the opening.
  • the bar part 2 excludes the wings. In a third embodiment, the bar part 2 comprises wings on a portion of its length.
  • the arrangement 100 further comprises a borer 6, which comprises fourth fastening means 1 1 .
  • the borer 6 may be fastened detachably by the fourth fastening means 1 1 to said third fastening means 10.
  • the third and fourth fastening means 10, 1 1 establish a HEX joint, but it is obvious that the joint may be another joint.
  • the purpose of the borer 6 and, in particular, a blade part 15 adapted to it, is to release material by cutting.
  • the arrangement 100 further comprises a reamer 8, adapted mova- ble to a distal end 9 of the casing so that the reamer 8 has a free travel F in the direction of the longitudinal axis X of the casing.
  • the free travel is at least 1 mm, advantageously 3 to 10 mm.
  • the advantage of the free travel is that the reamer 8 and casing 1 may be used not only with the borer 6 but also with a percussion hammer, as will be explained below.
  • the reamer 8 removes material from the outer perimeter of the hole so that the hole being bored is adequately large for the casing 1 .
  • the reamer 8 is adapted to rotate around the longitudinal axis X of the casing, in other words it is able to rotate in the direction of the perimeter of the casing 1 .
  • the reamer 8 is adapted to rotate around the longitudinal axis X of the casing by an unlimited rotating angle, that is, rotation after rotation.
  • the borer 6 comprises first fastening means 4, and the reamer 8 second fastening means 7. These may be detachable coupled to each other so that the reamer 8 may be fed against the ground with a feeding force conveyed to the borer 6 from the bar part 2 and rotated with a rotating movement conveyed to the borer 6 from the bar part 2.
  • the first and second fastening means 4, 7 are typically of the bayonet type. Such fastening means may be released from each other by an opposite rotating movement.
  • the arrangement 100 comprises a drill shoe 12 fastened to the casing 1 by welding, for example, and arranged to couple to the borer 6 - and percussion hammer as will be described below.
  • the drill shoe 12 conveys the axial, ground-penetrating motion of the borer 6 (or percussion ham- mer) as a movement taking the casing 1 further in the direction of its longitudinal axis X.
  • Figure 2a shows the arrangement of Figure 1 a provided with a percussion hammer in cross section from a side, and Figure 2b a cross section of a detail of the arrangement shown in Figure 2a.
  • a percussion hammer 13 is connected at the distal end 5 of the bar part, and inside the casing 1 .
  • the percussion hammer comprises a pilot crown 14 and fourth fastening means 1 1 as does the borer 6.
  • the percussion hammer 13 may be fastened in place of the borer 6 to the third fastening means 10 of the bar part.
  • the percussion hammer 13 further comprises first fastening means 4, just like the reamer 6 does, by means of which the percussion hammer 13 may be detachable fixed to the second fastening means 7 on the reamer.
  • the reamer 8 is adapted to be rotated by means of the rotating movement of the bar part 2, conveyed by the percussion hammer 13. With the very same fastening means 4, 7, a longitudinal percussive load is conveyed to the reamer 8 from a pilot crown 14, allowing the boring function of the reamer 8.
  • the percussive movement of the percussion hammer 13 is only directed on the casing in case the casing 1 leaves behind of the reamer 8. In this case, the percussive movement pulls the casing 1 forward, and the reamer 8 may yet again move freely forward.
  • the drill shoe 12 is arranged to couple to the percussion hammer 13 and adapted to convey the axial movement of the percussion hammer 13 as a movement taking the casing 1 forward in the direction of its longitudinal axis X.
  • the arrangement 100 described in the above may be used according to, for example, the following method.
  • the casing 1 is taken into the ground in its soft portion by boring, with the use of the borer 6 and reamer 8.
  • the portion of hard ground and/or rock is bored with percussive boring with the percussion hammer 13 by the use of the pilot crown 14 and the reamer 8 referred to in the above.
  • the borer 6 or percussion ham- mer 13 is installed in the third fastening means 10 of the bar part 2, and if there is a substantial change in the ground, the borer 6 is replaced with the percussion hammer 13, or the percussion hammer 13 with the borer 6.
  • this is performed so that the possible locking between the first and second fastening means 4, 7 is opened, and the bar part 2 is pulled out of the casing 1 .
  • the locking between the third and fourth locking means 10, 1 1 is opened, and the reamer 6 or percussion hammer 13 is detached.
  • the possible locking between the first and second fastening means 4, 7 is locked, and the drilling of the hole is continued for as long as the casing 1 is at the desired depth, or until the ground again changes to the extent that it is advantageous to replace the tool.
  • One and the same reamer 8 takes part in installing the casing regardless of whether the borer 6 or percussion hammer 13 is being used.
  • the borer 6 and percussion 13 have their own bar parts 2.
  • the borer 6 or percussion hammer 13 may detachably or fixedly fastened to its bar part.
  • the borer 6 and the bar part 2 that rotated it are lifted out of the casing 1 , and a bar part 2 that has a percussion hammer 13 at its end is adapted in its place.
  • the procedure is naturally the opposite if the ground changes from hard to soft.
  • one and the same reamer 8 takes part in installing the casing regardless of whether the borer 6 or percussion hammer 13 is being used. If the arrangement 100 has the first fastening means 4 on the borer 6 and/or percussion hammer 13, and second fastening means 7 on the reamer 8, the process is as described previously in this description.
  • features disclosed in this application may be used as such, regardless of other features.
  • features disclosed in this application can be combined, if necessary, to form various combinations.
  • the arrangement according to the invention is characterised in that it comprises a casing, a bar part adapted to be rotatable inside the casing, and furthermore a borer which comprises a blade part to release material, the borer being adapted at a distal end of the bar part and to be rotated with the bar part, as well as a reamer adapted movably to the distal end of the casing so that the reamer has a free travel in the direction of the longitudinal axis of the casing.
  • the method of the invention is character- ised by the method using the arrangement described in this description, and: drilling a soft portion of the ground by boring with the use of the borer, blade part, and reamer, and a portion of hard ground and/or rock is bored with percussive boring with a percussion hammer and by the use of a pilot crown and the aforementioned reamer.

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Geology (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Civil Engineering (AREA)
  • Paleontology (AREA)
  • Earth Drilling (AREA)

Abstract

L'invention concerne un agencement et un procédé d'installation de tubage. L'agencement (100) comprend un tubage (1), une partie barre (2) conçue rotative à l'intérieur du tubage, l'agencement comprenant en outre une mèche (6) qui comprend une partie lame (15) destinée à libérer du matériau, la mèche (6) étant disposée à une extrémité distale (5) de la partie barre et destinée à tourner avec la partie barre (2), ainsi qu'un alésoir (8) disposé mobile à l'extrémité distale du tubage (1) de telle sorte que l'alésoir (8) a une course libre (F) dans la direction de l'axe longitudinal (X) du tubage.
PCT/FI2018/050737 2017-10-13 2018-10-12 Agencement et procédé d'installation de tubage Ceased WO2019073123A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI20175902 2017-10-13
FI20175902A FI20175902A1 (fi) 2017-10-13 2017-10-13 Järjestely ja menetelmä maaputken asentamiseksi

Publications (1)

Publication Number Publication Date
WO2019073123A1 true WO2019073123A1 (fr) 2019-04-18

Family

ID=66101297

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/FI2018/050737 Ceased WO2019073123A1 (fr) 2017-10-13 2018-10-12 Agencement et procédé d'installation de tubage

Country Status (2)

Country Link
FI (1) FI20175902A1 (fr)
WO (1) WO2019073123A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995034740A1 (fr) * 1994-06-10 1995-12-21 Ilomaeki Valto Appareil de forage
JP2011021411A (ja) * 2009-07-17 2011-02-03 Toyomitsu Kogyo Kk 二重管削孔工具
JP2014163113A (ja) * 2013-02-25 2014-09-08 Kouchi Marutaka:Kk 掘削装置

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995034740A1 (fr) * 1994-06-10 1995-12-21 Ilomaeki Valto Appareil de forage
JP2011021411A (ja) * 2009-07-17 2011-02-03 Toyomitsu Kogyo Kk 二重管削孔工具
JP2014163113A (ja) * 2013-02-25 2014-09-08 Kouchi Marutaka:Kk 掘削装置

Also Published As

Publication number Publication date
FI20175902A1 (fi) 2019-04-14

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