EP4083368B1 - Procédé de pose souterraine de conduites - Google Patents

Procédé de pose souterraine de conduites Download PDF

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Publication number
EP4083368B1
EP4083368B1 EP21170950.6A EP21170950A EP4083368B1 EP 4083368 B1 EP4083368 B1 EP 4083368B1 EP 21170950 A EP21170950 A EP 21170950A EP 4083368 B1 EP4083368 B1 EP 4083368B1
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EP
European Patent Office
Prior art keywords
borehole
pipe
pipeline
piping
pipe section
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.)
Active
Application number
EP21170950.6A
Other languages
German (de)
English (en)
Other versions
EP4083368C0 (fr
EP4083368A1 (fr
Inventor
Ernst Fengler
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.)
Lmr Drilling GmbH
Original Assignee
Lmr Drilling GmbH
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 Lmr Drilling GmbH filed Critical Lmr Drilling GmbH
Priority to PL21170950.6T priority Critical patent/PL4083368T3/pl
Priority to HUE21170950A priority patent/HUE065431T2/hu
Priority to ES21170950T priority patent/ES2970559T3/es
Priority to EP21170950.6A priority patent/EP4083368B1/fr
Priority to HRP20240040TT priority patent/HRP20240040T1/hr
Publication of EP4083368A1 publication Critical patent/EP4083368A1/fr
Application granted granted Critical
Publication of EP4083368B1 publication Critical patent/EP4083368B1/fr
Publication of EP4083368C0 publication Critical patent/EP4083368C0/fr
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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
    • E21B7/00—Special methods or apparatus for drilling
    • E21B7/04—Directional drilling
    • E21B7/046—Directional drilling horizontal drilling
    • 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

Definitions

  • the invention relates to a method for laying pipelines underground, in which a substantially horizontal borehole is drilled into the ground using a drilling device.
  • Pipelines can be laid underground by digging trenches, laying the pipelines in the trenches and, after the pipelines have been completed, filling the trenches back with soil. This is complex due to the earthworks and is therefore time-consuming and cost-intensive. In particular, digging trenches poses problems if, for example, pipelines are to be laid beneath obstacles such as roadways, ditches or the like.
  • Horizontal drilling methods such as the horizontal directional drilling method, are known as trenchless laying methods, with which a pipeline can be laid without having to dig a trench.
  • a borehole is first drilled into the ground at an angle using a horizontal drilling device until the desired depth is reached in order to guide the pipeline safely underneath an obstacle.
  • the drilling can continue essentially horizontally until the drilling rises again to reach the target point, i.e. the exit point.
  • drilling can also be carried out in the nearshore and offshore areas, with the entry point being on the land side and the exit point being, for example, on the seabed. In exceptional cases, the entry point can also be on the water side or sea side and the exit point can be on the land side.
  • the pipeline is connected to the drill pipe, so that when the drill pipe is returned to the starting point, the pipe is pulled into the finished borehole.
  • WO 2012/056011 A1 describes a method for inserting a pipeline underground, in which a pilot hole is first created from the home page to the target side, with a drill head being moved forward using a drill pipe.
  • a reamer designed for the final diameter of the borehole is mounted on the target side and coupled to the pipeline prepared on the target side using a coupling device.
  • the reamer and the pipeline are then moved from the target side to the home page, with the reamer enlarging the borehole to the final diameter and the pipeline coming to rest in the borehole.
  • a method for trenchless laying of pipelines is disclosed.
  • a controlled pipe advance is guided from a starting point through the ground to a target point for producing a borehole, the borehole being created in the first step with a drill head and a drill string formed from tensile jacking pipes connected to one another to the final diameter of the pipeline.
  • the soil released from the drill head during the drilling process is extracted from the borehole.
  • the drill head is decoupled from the first jacking pipe.
  • the drill string is bent in its radius in relation to the axis in the longitudinal direction of the drill string, with a pipe pre-bent with the same radius of the pre-bent drill string being connected to the drill string.
  • the pipeline is installed in the borehole by pulling the drill string out of the borehole using tensile forces and removing it, thereby pulling the pipeline into the borehole.
  • EP 2 085 567 A1 describes a method for laying pipelines without trenches, in which a controlled pipe advance is guided from a starting point under an obstacle to a target point.
  • a drill head is advanced from the starting point with support tubes towards the target point, whereby the borehole created is already expanded to the final diameter and supported by the support tubes.
  • a pipeline prepared at least in sections is coupled to the support pipe string formed from the support pipes and moved through the borehole.
  • the invention is based on the object of proposing a method for laying pipelines underground, in which the assembly effort and space requirement on the outlet side can be reduced.
  • a drill pipe is removed from the borehole after the borehole has been completed in order to release the borehole and that the pipeline to be laid after the drill pipe is completely out of the borehole was removed from the insertion side of the borehole, which is given by the start page from which the borehole was introduced into the ground, and is introduced into the free borehole in the direction of a target point.
  • a borehole is drilled into the earth using a drilling device.
  • the borehole can first be drilled into the ground at an angle and can then be guided essentially horizontally below the obstacle.
  • a drill pipe with a drill head will be provided.
  • Various drilling methods can be used to create the borehole. Bores can also be provided in which the entry point of the bore is on the land side and the exit point of the bore is, for example, below the water level, for example in the seabed. Blind holes can also be provided in which a hole is not carried out completely to the target point, but rather the hole ends in front of the target point at a defined distance from it.
  • the drill pipe of the drilling device is removed from the borehole so that the borehole is now free.
  • the pipeline to be laid is pushed into the borehole in the direction of the target point, starting from the home side, i.e. from the side from which the borehole was drilled into the ground.
  • the pipeline is advanced to the target point or, in the case of a blind hole, the pipeline ends with the end of the borehole.
  • the pipeline can be inserted into the borehole as a continuous strand or in segments.
  • the production of the borehole or the course of the borehole can be controlled, for example by designing the drill pipe to be controllable. This means that the location of the borehole is known without additional surveying procedures.
  • the inserted pipeline can be flooded and pigs can be pumped into the pipeline. Pull ropes can also be installed after the pipeline has been laid.
  • the pipeline to be laid is introduced into the borehole in segments in the form of pipe sections and the pipe sections are connected to adjacent pipe sections.
  • the pipeline to be inserted into the borehole can be introduced into the borehole that has already been produced in segments, i.e. in the form of pipe sections.
  • pipe sections can be kept ready at the start, which are then inserted into the borehole one after the other.
  • the pipe sections are connected to one another in a fluid-tight, pressure-tight, shear-tight, tensile-tight, torsion-tight manner, for example.
  • sleeve connections for example, sleeve connections, welded connections, soldered connections, threaded connections, plug-in connections or combinations of these or other connections can be used.
  • the handling of the pipeline to be inserted is simplified compared to a long, continuous pipeline.
  • the storage of the pipe sections is simplified compared to a complete pipeline. Compared to a complete pipeline that is to be inserted into the borehole, the pipe segments are subject to lower demands in terms of their flexibility.
  • a pipe section introduced into the borehole in sections is connected to a following pipe section at its end protruding from the borehole.
  • one pipe section can be inserted into each the borehole must be inserted so that its rear end protrudes from the borehole.
  • a following pipe section is connected to this rear end of the protruding pipe section.
  • the connections between the pipe sections are made outside the borehole.
  • the pipe sections can be connected in such a way that a pipe section is connected to a previous pipe section, in particular a pipe section protruding from the borehole, outside the ground.
  • the connection outside the borehole makes the connection easy to handle, since, for example, welded connections between the pipe sections can easily be carried out above the ground.
  • the connection of the pipe sections can take place at a fixed position if the pipe sections each have the same length.
  • the front pipe section to be inserted into the borehole is a pipe section with a closed front end in the insertion direction.
  • the pipe segment i.e. the pipe section that is inserted into the borehole first, i.e. the pipe section that forms the beginning of the pipeline, has a closed end.
  • the formation of a front closed end of the first pipe section makes it easier to insert the pipe into the borehole. In particular, it prevents material, For example, soil from the walls of the borehole enters the pipeline.
  • the front end can be designed, for example, hemispherical, tapered or similar. In particular, depending on the embodiment, the front pipe end can serve to guide the pipe string in the existing borehole.
  • the pipeline is inserted into the borehole using a drilling device for drilling horizontal bores.
  • a drilling device in particular the horizontal drilling system with which the borehole was created, can advantageously be used to insert the pipeline segments.
  • the drilling device can be used to insert the pipeline or the individual pipe sections into the borehole, analogous to inserting the drill pipe. This results in a reduction in the amount of work, since no device specifically intended for inserting the pipe segments has to be set up and the drilling device does not have to be dismantled.
  • the drilling device is the same drilling device with which the borehole was drilled into the ground.
  • the horizontal drilling system can be equipped or converted with an adapter for inserting the pipeline.
  • the diameter of the borehole created using the drill pipe is larger than the diameter of the pipeline to be laid, in particular the diameter of the borehole is 20% to 50% larger than the diameter of the pipeline to be laid.
  • a Borehole can be made whose diameter is larger than the diameter of the pipeline to be inserted.
  • the diameter of the borehole can be 20% to 50% larger than the diameter of the pipeline to be laid. This makes it possible to easily insert the pipeline into the prefabricated borehole.
  • the diameter of the borehole is also significantly larger than the diameter of the drill pipe used. The large diameter of the borehole can be achieved using a flush drilling process.
  • a support fluid is introduced into the borehole and the borehole is supported by the support fluid.
  • a supporting fluid can be introduced into the borehole in order to achieve stabilization of the inner wall of the borehole.
  • a supporting liquid is a bentonite-based clay powder-water suspension. If necessary, the supporting fluid can be adapted and/or expanded to the respective operating conditions using additives or alternative products. During the drilling work, the supporting fluid can be pumped through the drill string into the drill assembly and can exit there through nozzles into the borehole. Alternative drilling fluids can also be used.
  • a horizontal drilling device for laying a pipeline underground in a free borehole from an entry point towards the exit point.
  • a horizontal drilling system with which a borehole, in particular a substantially horizontally oriented borehole, was created is used to insert the pipeline into the borehole made by means of the horizontal drilling system.
  • the horizontal drilling system can be equipped with an adapter for pipe insertion.
  • the pipeline can be inserted in a strand or in segments into the prefabricated borehole starting from the inlet side in the direction of the target point.
  • the individual pipe sections can be connected to one another outside the ground when inserted in segments.
  • the use of a horizontal drilling device to create the borehole and to insert the pipeline is advantageous because no device specifically designed for this purpose has to be used to insert the pipeline.
  • Fig. 1a the introduction of a borehole 1 into the ground 2 below an obstacle 3 is shown in a schematic side sectional view.
  • the obstacle 3 is formed by a river.
  • the borehole 1 is made from an entry point 4 to an exit point 5.
  • a drilling device 6 is used. When reached At a sufficient depth, the borehole 1 is guided essentially horizontally until it is guided upwards to the exit point 5.
  • Fig. 1b is the detail section A Fig. 1a shown.
  • a drill pipe 7 with a drill head 8 is inserted into the soil 2 using a horizontal drilling device 6.
  • Fig. 1c is section B Fig. 1a presented in detail. After reaching a desired depth, the drill pipe 7 with the drill head 8 is guided essentially horizontally.
  • Fig. 1d is section C Fig. 1a presented in detail.
  • the drill pipe 7 with the drill head 8 reaches the earth's surface at the exit point 5, so that the borehole 1 is completely produced.
  • Fig. 2a the production of a borehole 1 with an offshore exit point 9 is shown in a schematic sectional side view.
  • the entry point 4 is located on the land side, so that the borehole 1 is directed to an offshore exit point 9.
  • the exit point 9 is below the water level 10 and can be located, for example, on the seabed.
  • Fig. 2b the offshore exit area 9 is shown in detail.
  • the drill pipe 7 penetrates the seabed at the exit point 9, so that the borehole 1 is completely produced.
  • Fig. 3a The production of a blind hole is shown in a schematic sectional side view. Starting from an entry point 4, the borehole 1 is introduced into the ground 2, whereby the borehole 1 is not guided to the seabed, but rather the borehole ends in a blind hole 11.
  • Fig. 3b the blind hole 11 is shown in detail.
  • the borehole 1 ends below the seabed 12 or the exit point as a blind hole 11.
  • Fig. 4a the introduction of a pipeline 13 according to the invention into a borehole 1 is shown in a schematic sectional side view.
  • the pipeline 13 is inserted into the borehole 1 by means of the horizontal drilling device 18 from the entry side 4 in the direction of the exit point 5.
  • Fig. 4b is the area A from the Fig. 4a presented in detail.
  • a first pipe section 14 is inserted into the borehole 1 in sections.
  • the pipe section 14 has a closed front end 15, which is first inserted into the borehole 1.
  • the closed end 15 can in particular be hemispherical.
  • the front pipe section 14 and the following pipe section 16 have a connection 17.
  • the connection 17 can be a socket connection, a welded connection, a screw connection or something similar.
  • Fig. 4c the insertion of the pipeline 13 with the pipe sections 14 and 16 shown is shown through the borehole 1.
  • Fig. 5 is the insertion of a pipeline 13 with an offshore exit point 9 analogous to Fig. 4 shown.

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Mechanical Engineering (AREA)
  • Earth Drilling (AREA)
  • Excavating Of Shafts Or Tunnels (AREA)

Claims (10)

  1. Procédé pour la pose souterraine de conduites (13), sachant qu'au moyen d'au moins une tige de forage (7) d'un dispositif de forage (6), un trou de forage (1) pour l'essentiel horizontal est aménagé depuis un côté de départ dans le sol (2),
    caractérisé en ce que
    la tige de forage (7) est enlevée du trou de forage (1) après la finalisation du trou de forage (1) pour libérer le trou de forage (1) et
    en ce que la conduite à poser (13), après que la tige de forage (7) a été complètement enlevée du trou de forage (1), est introduite dans le trou de forage libre (1) en direction d'un point de destination par le côté d'introduction du trou de forage (1), qui est offert par le côté de départ à partir du trou de forage (1) duquel elle a été introduite dans le sol (2) .
  2. Procédé selon la revendication 1, caractérisé en ce que la conduite à poser (13) est introduite par segment dans le trou de forage (1) sous la forme de tronçons de conduite (14) et en ce que les tronçons de conduite (14) sont reliés aux tronçons de conduite (14) respectivement voisins.
  3. Procédé selon la revendication 2, caractérisé en ce qu'un tronçon de conduite (14, 16) introduit par tronçon dans le trou de forage (1) est relié à son extrémité dépassant du trou de forage (1) au tronçon de conduite (14, 16) suivant.
  4. Procédé selon l'une quelconque des revendications 2 ou 3, caractérisé en ce que les liaisons (17) entre les sections de conduite (14, 16) sont réalisées en dehors du trou de forage (1).
  5. Procédé selon l'une quelconque des revendications 1 à 4, caractérisé en ce que concernant le tronçon de conduite (14) avant à introduire dans le trou de forage (1), il s'agit d'un tronçon de conduite (14) avec une extrémité avant fermée (15) en direction d'introduction.
  6. Procédé selon l'une quelconque des revendications 1 à 5, caractérisé en ce que le conduite (13) a été introduite au moyen d'un dispositif de forage (6) pour aménager des forages horizontaux dans le trou de forage (1).
  7. Procédé selon la revendication 6, caractérisé en ce qu'en ce qui concerne le dispositif de forage (6), il s'agit du même dispositif de forage (6) que celui avec lequel le trou de forage (1) a été aménagé dans le sol (2) .
  8. Procédé selon l'une quelconque des revendications 1 à 7, caractérisé en ce que le diamètre du trou de forage (1) réalisé au moyen de la tige de forage (7) est plus grand que le diamètre de la conduite à poser (13), en particulier en ce que le diamètre du trou de forage (1) est plus grand de 20 % - 50 % que le diamètre de la conduite à poser (13).
  9. Procédé selon l'une quelconque des revendications 1 à 8, caractérisé en ce qu'un liquide de soutien est introduit dans le trou de forage (1) et en ce que le trou de forage (1) est soutenu par le liquide de soutien.
  10. Utilisation d'un dispositif de forage horizontal (6) pour la pose souterraine d'une conduite (13) dans un trou de forage libre depuis un point d'entrée (4) en direction du point de sortie (5, 9), sachant que le point d'entrée (4) est déterminé par le côté de départ depuis lequel un trou de forage (1) a été aménagé dans le sol (2).
EP21170950.6A 2021-04-28 2021-04-28 Procédé de pose souterraine de conduites Active EP4083368B1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
PL21170950.6T PL4083368T3 (pl) 2021-04-28 2021-04-28 Sposób układania rurociągów pod ziemią
HUE21170950A HUE065431T2 (hu) 2021-04-28 2021-04-28 Eljárás csõvezetékek föld alatti lefektetésére
ES21170950T ES2970559T3 (es) 2021-04-28 2021-04-28 Método para la colocación de tuberías subterráneas
EP21170950.6A EP4083368B1 (fr) 2021-04-28 2021-04-28 Procédé de pose souterraine de conduites
HRP20240040TT HRP20240040T1 (hr) 2021-04-28 2021-04-28 Postupak za polaganje cjevovoda pod zemljom

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP21170950.6A EP4083368B1 (fr) 2021-04-28 2021-04-28 Procédé de pose souterraine de conduites

Publications (3)

Publication Number Publication Date
EP4083368A1 EP4083368A1 (fr) 2022-11-02
EP4083368B1 true EP4083368B1 (fr) 2023-11-01
EP4083368C0 EP4083368C0 (fr) 2023-11-01

Family

ID=75728715

Family Applications (1)

Application Number Title Priority Date Filing Date
EP21170950.6A Active EP4083368B1 (fr) 2021-04-28 2021-04-28 Procédé de pose souterraine de conduites

Country Status (5)

Country Link
EP (1) EP4083368B1 (fr)
ES (1) ES2970559T3 (fr)
HR (1) HRP20240040T1 (fr)
HU (1) HUE065431T2 (fr)
PL (1) PL4083368T3 (fr)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2085567A1 (fr) * 2008-01-31 2009-08-05 Hans-Jürgen John Procédé de déplacement sans tranchée de tuyaux
DE102010006824B3 (de) * 2010-02-03 2011-07-28 Herrenknecht Ag, 77963 Verfahren zur grabenlosen Verlegung von Rohrleitungen
EP2447462A1 (fr) * 2010-10-29 2012-05-02 T.I.C. Technology Innovation Consulting AG Procédé d'introduction souterraine d'une conduite

Also Published As

Publication number Publication date
HRP20240040T1 (hr) 2024-03-29
EP4083368C0 (fr) 2023-11-01
HUE065431T2 (hu) 2024-05-28
EP4083368A1 (fr) 2022-11-02
ES2970559T3 (es) 2024-05-29
PL4083368T3 (pl) 2024-03-25

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