EP0900913A1 - Bohrgestänge - Google Patents

Bohrgestänge Download PDF

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Publication number
EP0900913A1
EP0900913A1 EP98401970A EP98401970A EP0900913A1 EP 0900913 A1 EP0900913 A1 EP 0900913A1 EP 98401970 A EP98401970 A EP 98401970A EP 98401970 A EP98401970 A EP 98401970A EP 0900913 A1 EP0900913 A1 EP 0900913A1
Authority
EP
European Patent Office
Prior art keywords
rod
rods
male
notches
end piece
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.)
Withdrawn
Application number
EP98401970A
Other languages
English (en)
French (fr)
Inventor
Régis Bernasinski
Zbigniew Kapusta
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.)
Compagnie du Sol SARL
Original Assignee
Compagnie du Sol SARL
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 Compagnie du Sol SARL filed Critical Compagnie du Sol SARL
Publication of EP0900913A1 publication Critical patent/EP0900913A1/de
Withdrawn legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
    • E02D3/12—Consolidating by placing solidifying or pore-filling substances in the soil
    • 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
    • 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
    • E02D5/18—Bulkheads or similar walls made solely of concrete in situ
    • 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

Definitions

  • the present invention relates to a drill string.
  • the drill string consists of rods having the form of unitary tubular sections connected to each other and provided with appropriate seals, each section can be formed of a single tube in the case of a single jet or multiple coaxial tubes in the case with a double or triple jet.
  • the drill string fulfills the double function of allowing movement in drilling of the rotary jets and to transmit fluids from the production station to ejection nozzles, these fluids can be a grout, air or water.
  • a drilling tool can be provided below the nozzles. used to make the jets at the lower end of the drill string for carry out the drilling in which the treatment will be carried out.
  • the jet treatment is started by placing the device jet at the bottom of the borehole and driving the drill string in a movement of rotation and translation towards the borehole head until a column of land treated at the desired height.
  • the drill string during its ascent protrudes from a height more and more larger above the surface of the soil in which the treatment is applied. This is not a disadvantage when the work is carried out in normal site conditions, i.e. under conditions where the height above the ground is not limited or at least allows the complete ascent of the drill string.
  • An object of the present invention is to provide a drill string for drilling which, in particular in the case of the implementation of a process for injecting grout, allows easy disassembly of the drill string without interrupting the supply in grout of the ejection nozzles, while avoiding the drawbacks mentioned above.
  • the drill string comprising a plurality of rods all having the same axial recess, each rod comprising at a first end a male end and at a second end a female end, the male end of a first rod being able to cooperate with the female end of an adjacent rod, is characterized in that each rod has in its wall surrounding said axial recess a slot extending over its entire length, the male and female end pieces being arranged in such a way so that when several rods are assembled, the slit of a rod, relative to the common axis of the rods, or disposed substantially at 180 ° relative to the slots of the two adjacent rods, said train further comprising at least one pipe disposed in the axial recesses of said rods, the width of the slot of each rod being at least equal to the diameter of said pipe.
  • each rod of the drill string the lines for the various liquids which must be ejected the base of the drill string circulates in hoses arranged inside the rods thus ensuring the protection of these hoses.
  • each rod has a slot over its entire length, it is possible to proceed to the removal and disassembly successively of each rod without this disrupts the flow of grout in the hoses.
  • the alternation of the rods having slots arranged at 180 ° ensures a very good guiding the hoses inside the axial recess defined by the succession of rods and the mechanical protection of these hoses.
  • disassembly successive rods is easy since the hoses can pass through the slot provided in each rod.
  • each male or female end piece has an axial recess extending that of the rod and a surrounding wall said recess, said wall having notches extending parallel to the axial direction of the rod, one of said notches extending the slot of the rod, said notches being separated by protruding portions of the wall, the notches of a male or female end of a rod corresponding to the portions in projection of a female or male end of an adjacent rod, whereby the faces lateral notches parallel to the axial direction of a male end and a female tip cooperate with each other when a rotational movement is applied to the drill string, and the faces of the protruding portions and the notches of a nozzle male and female tip cooperate with each other under the effect of a push downward vertical applied to the drill string.
  • FIG. 1 there is shown in vertical section, in a simplified manner, an installation for the implementation of the soil treatment process by jet of grout.
  • a tubular rod train 14 constituted by the rods 16a, etc., 16n.
  • the lower rod 16n has its lower end secured to a grout ejection head 18, this ejection head possibly also possibly be equipped with a drilling head used to carry out drilling 10.
  • conduits flexible such as 20 and 22 for supplying the ejection nozzles especially in grout in water or air.
  • the ends of these flexible tubes 20 and 22 can be wound on storage drums such than 24 arranged on the ground surface.
  • the installation also includes a head 26 for rotating the rod train and a slide 28 for guiding the rods in their part projecting out of the borehole 10.
  • FIG 2 there is shown schematically drill rods 16 assembled together. These tubular rods comprise an upper male end piece 30 and a female lower end piece 32. It is thus possible to make the mechanical connection between two consecutive rods 16 and thus constitute the entire set of rods.
  • the rods of course comprise an axial recess 34 which communicates with the outside by a slot 36 whose width e is substantially equal to the dimension e 'of the recess 34.
  • the male 30 and female 32 ends are produced in such a way that, after assembly, the slots 36 of the rods are arranged alternately at an angle of 180 ° by relative to the common axis XX 'of the drill string.
  • the slot is directed towards the front of the figure, while for the rod 16a, the slot is directed towards the rear of the figure.
  • each rod is intended to receive the pipes 20 and 22.
  • each rod 16 is constituted by a folded sheet 38 which defines the axial housing 34 as well as the slot 36.
  • end caps respectively male 30 and female 32 are solid parts welded to ends of the current part of the rod 16.
  • connection part 44 comprises, like the shows better in Figure 6 two recesses 46 and 48. If we consider the different areas of the connection part 44 with respect to the axis XX 'of the train rods, there is a first projecting area 50 opposite to an area forming a slot 52 which extends the slot 42. The remaining parts constitute the notches 46 and 48 which are diametrically opposite as well as two projecting portions, the portion 54 being connected to portion 50 and portion 56 being isolated.
  • Figure 5 shows the female end piece which has exactly the same shape as the male end piece. The only difference is that the projecting parts of the male end are provided at their upper end with chamfers such as 60 to facilitate assembly of rods.
  • the female end piece 32 therefore has exactly the same system notch and projecting parts. If we consider the male and female tips rods intended to be associated with a given rod and whose orientation of the slot is arranged at 180 °, we find the arrangement shown in Figure 6.
  • the vertical side faces 62 1 and 62 2 of the notches 46 and 48 are arranged in the same plane containing the axis XX 'of the rod.
  • This arrangement of course promotes the transmission of torque between the rods. Due to the presence of the slots in the rods, the other vertical lateral faces 62 3 and 62 4 of the notches cannot comply exactly with this provision. They approach it.
  • the faces 62 3 and 62 4 are arranged substantially in the same plane, but this plane is slightly offset with respect to the axis XX '.
  • each female endpiece a movable axis 70 and 72 which can be engaged in corresponding bores 74 and 76 for the female end piece and 78 and 80 for the male end.
  • axes 70 and 72 are engaged and locked in the different "horizontal" bores, securing the rods is ensured in the direction of lifting said rods.
  • Figure 8 shows the assembly of the male end of a rod and the female end of the adjacent rod. We see that at this level the axial recess is fully surrounded by the combination of male and female tips, which ensures maintaining the hoses 90 and 92 in the rods. However, as soon as the stems are uncoupled, the slot allowing the extraction of the hoses is recreated.

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Geology (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Structural Engineering (AREA)
  • Fluid Mechanics (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Agronomy & Crop Science (AREA)
  • Soil Sciences (AREA)
  • Earth Drilling (AREA)
EP98401970A 1997-09-05 1998-08-03 Bohrgestänge Withdrawn EP0900913A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9711086A FR2768174B1 (fr) 1997-09-05 1997-09-05 Train de tiges de forage
FR9711086 1997-09-05

Publications (1)

Publication Number Publication Date
EP0900913A1 true EP0900913A1 (de) 1999-03-10

Family

ID=9510816

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98401970A Withdrawn EP0900913A1 (de) 1997-09-05 1998-08-03 Bohrgestänge

Country Status (2)

Country Link
EP (1) EP0900913A1 (de)
FR (1) FR2768174B1 (de)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2697551A1 (fr) 1992-11-03 1994-05-06 Sif Entreprise Bachy Dispositif perfectionné pour le traitement des sols par jet(s) rotatif(s).

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2697551A1 (fr) 1992-11-03 1994-05-06 Sif Entreprise Bachy Dispositif perfectionné pour le traitement des sols par jet(s) rotatif(s).

Also Published As

Publication number Publication date
FR2768174B1 (fr) 1999-12-10
FR2768174A1 (fr) 1999-03-12

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