EP3877624B1 - Dispositif de tige d'entraînement pour un appareil de forage et procédé de traitement du sol - Google Patents

Dispositif de tige d'entraînement pour un appareil de forage et procédé de traitement du sol Download PDF

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Publication number
EP3877624B1
EP3877624B1 EP20750664.3A EP20750664A EP3877624B1 EP 3877624 B1 EP3877624 B1 EP 3877624B1 EP 20750664 A EP20750664 A EP 20750664A EP 3877624 B1 EP3877624 B1 EP 3877624B1
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EP
European Patent Office
Prior art keywords
kelly bar
attachment section
rotary
inner kelly
bar arrangement
Prior art date
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Active
Application number
EP20750664.3A
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German (de)
English (en)
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EP3877624A1 (fr
Inventor
Sebastian Bauer
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.)
Bauer Maschinen GmbH
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Bauer Maschinen GmbH
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Publication date
Application filed by Bauer Maschinen GmbH filed Critical Bauer Maschinen GmbH
Publication of EP3877624A1 publication Critical patent/EP3877624A1/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
    • 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
    • E21B17/07—Telescoping joints for varying drill string lengths; Shock absorbers
    • 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
    • E21B17/07—Telescoping joints for varying drill string lengths; Shock absorbers
    • E21B17/073—Telescoping joints for varying drill string lengths; Shock absorbers with axial rotation
    • 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
    • E21B7/02—Drilling rigs characterised by means for land transport with their own drive, e.g. skid mounting or wheel mounting

Definitions

  • the invention relates to a Kelly rod arrangement for a drilling device, in particular an earth drilling device, with a tubular outer Kelly rod, which is designed to rest on a drilling drive and to absorb a drilling torque of the drilling drive, and with an inner Kelly rod, which is movably mounted inside the outer Kelly rod and has a cable suspension , wherein the drilling torque can be transmitted between the outer kelly rod and the inner kelly rod, according to the preamble of claim 1.
  • a generic Kelly bar arrangement according to the preamble is from DE 43 33 114 C1 famous.
  • the rotor of the rotary feedthrough for the pressure fluid is passively driven in a known manner. This passive entrainment is prone to failure in the harsh environmental conditions that usually prevail on construction sites.
  • the EP 2 821 585 A1 discloses a drill rod assembly that also includes a rotary union for pressurized fluid.
  • the rotor rotates passively, which is carried along in relation to the stator sleeve.
  • the EP 3 228 756 A1 discloses a construction machine with a drill rod. This disclosure does not show any details of a possible pressurized fluid rotary union and thus only represents a possible use for drill strings.
  • the invention relates to a method for tilling the soil, in which a Kelly bar arrangement is set in rotary motion by means of a drill drive, with a soil tillage tool being attached to an inner Kelly bar of the Kelly bar arrangement, which tills a soil, according to the preamble of claim 12.
  • Kelly bar arrangements for a drill have long been known in foundation engineering.
  • Such kelly rod arrangements are telescopic and have an outer outer kelly rod which is connected to a drilling drive of the drilling device in a rotating connection.
  • An inner kelly rod and optionally further intermediate kelly rods are arranged inside the outer kelly rod, which are mounted in the outer kelly rod and in relation to one another in an axially displaceable manner.
  • the inner kelly bar has a cable suspension so that the inner kelly bar and also the entire kelly bar arrangement can be held on the cable and moved vertically.
  • axially running stop strips are provided on the outer and inner sides of the individual Kelly bar elements, which allow both axial displacement and torque transmission in the circumferential direction.
  • Such a Kelly bar arrangement enables efficient cable suspension of a soil cultivation tool with the simultaneous possibility of torque transmission.
  • the telescoping capability of the individual Kelly bar elements relative to one another makes it possible to reach working depths that are greater than the height of the mast of a drilling rig.
  • Kelly bar assemblies of this type are used for working with simple mechanical tillage tools, such as a drill bucket or an auger.
  • simple mechanical tillage tools such as a drill bucket or an auger.
  • the use of a Kelly bar arrangement becomes problematic when a medium, such as a flushing liquid or a pressurized fluid, is to be supplied from the outside.
  • the invention is based on the object of specifying a Kelly bar arrangement and a method for tilling the soil with a Kelly bar arrangement, which can be used in a particularly diverse manner.
  • the Kelly bar arrangement according to the invention is characterized in that at least one line is arranged on the inner Kelly bar, that a rotary feedthrough with a first end section and a second end section is arranged at a lower or upper end region of the inner Kelly bar, the first connection section being non-rotatably connected to the Kelly bar that can be driven in rotation and forms a line connection to the at least one line of the inner kelly rod and the second connection section is connected to a supply line, which is stationary relative to the inner kelly rod that can be driven in rotation, and that a rotary device for actively rotating the two connection sections relative to one another is arranged on the rotary feedthrough.
  • a first aspect of the invention is to provide a rotary union on the inner kelly rod.
  • a swivel is an element that enables a line connection between a rotating part and a part that is stationary relative to it.
  • This rotary bushing can be arranged on a lower or upper end area of the inner Kelly rod.
  • At least one line is preferably provided along the inner Kelly bar, which leads from the upper end area to a lower area of the Kelly bar.
  • the rotary leadthrough is arranged on a lower end area of the inner kelly rod, in which case the line rotating with the inner kelly rod can be correspondingly shorter.
  • the relatively fixed feed line can be routed within the inner cavity of the inner kelly rod from above to the second connection section of the rotary feedthrough at the lower end area.
  • a rotary device for actively rotating the two connection sections relative to one another is arranged on the rotary feedthrough.
  • the invention is based on the finding that the upper end of the inner kelly rod can be moved to a lower end region of the outer kelly rod, for example when the kelly rod arrangement is telescoped out.
  • a necessary reliable mechanical support of the rotary feedthrough against a part that is stationary relative to the rotating Kelly bar arrangement becomes practically impossible.
  • a rotary device is provided for actively twisting the two connection sections relative to one another. In this way, an undesired wrapping of the supply line around the cable can be counteracted in a targeted manner.
  • a Kelly bar arrangement with the advantageous cable suspension and the telescoping capability with simultaneous torque transmission can also be used for tillage tools in which the supply of a fluid, energy or data via a supply line from the outside is necessary or desired.
  • the rotary feedthrough can be arranged at any point on the upper end area of the inner kelly rod.
  • it is particularly advantageous that the rotary leadthrough is arranged on the inner kelly rod below the cable suspension.
  • the rotary feedthrough can be ring-shaped, with the cable suspension being able to be arranged in a central area of the rotary feedthrough.
  • a further preferred embodiment of the invention is that the rotating device has at least one drive motor for actively rotating the second connection section relative to the first connection section.
  • further drive motors can also be provided.
  • the drive motor is arranged on the second connection section, which lies above the first connection section. There is good accessibility to the drive motor. In addition, energy can be supplied to the drive motor in parallel or with the supply line.
  • the drive motor is an electric motor or a hydraulic motor.
  • the drive motor can be designed to be very compact overall, since only relatively low torques have to be applied for the necessary compensation for the rotational movement between the two connection sections.
  • a compressed air motor can also be provided.
  • a further advantageous embodiment of the invention is that the cable suspension has a cable swivel.
  • a swivel within the meaning of the invention is a swivel joint which enables a lower linkage of the swivel to the inner kelly rod to be twisted in relation to an upper linkage of the swivel to the suspension rope.
  • a rope swivel can be used to ensure that a rotary movement of the inner kelly rod, which is attached to the lower linkage of the rope swivel, cannot be transferred to the upper part of the rope swivel and thus to the rest of the rope. In this way, twisting of the suspension cable can be reliably avoided.
  • the line of the inner Kelly rod can be designed as a hollow line, for example a hose or a tube or as a cable for conducting electrical current or data.
  • an axial cavity of the inner Kelly rod is provided as a line, which cavity is designed for the passage of a fluid.
  • the fluid can in particular be a flushing liquid or a concrete suspension.
  • a connection area can be provided at the lower end of the inner kelly rod, with which a line connection to a soil cultivation tool, in particular a drilling tool, attached to the lower end of the inner kelly rod is made possible.
  • a cable is provided as a line on the inner kelly rod, which cable is designed to conduct electricity and/or data.
  • the cable can be routed as an additional line along the axial cavity of the inner Kelly rod.
  • the rotary feedthrough is designed alone or additionally with corresponding contact rings on the two connection sections, which ensure frictional contact for power or data transmission during a rotary movement.
  • the invention also includes a drilling device, in particular an earth drilling device, with a drilling drive, the Kelly bar arrangement according to the invention described above being provided.
  • the drill drive is preferably designed in the form of a ring with a passage through which the outer Kelly bar of the Kelly bar arrangement is guided.
  • the ring-shaped rotary drive has a ring-shaped drive wheel, which is provided with drive projections on its inside. For torque transmission, these interact in a known manner with axial drive rails on the outside of the outer kelly rod.
  • a controller is provided for the rotary device and that a rotary sensor is provided for determining a speed and/or a direction of rotation of at least the inner Kelly rod, which is in signal communication with the controller.
  • the rotary device and thus the drive motor can always be controlled by the controller in such a way that the upper second connection section of the rotary feedthrough is as fixed as possible relative to the rotating inner Kelly rod.
  • the rotary device is driven in a controlled manner by the control device, so that the second connection section of the rotary feedthrough is driven and synchronized in the opposite direction to a rotary movement of the inner Kelly rod.
  • Exact compensation of the rotary movement of the inner kelly rod takes place, so that the opposite rotary movement by the rotary device achieves a desired standstill of the second connection section with the feed line, which in principle can also be a fluid line and/or a cable.
  • the method for soil cultivation according to the invention which can be carried out in particular with the drilling device described above, is characterized in that a rotary device is provided for actively rotating the second connection section relative to the first connection section, with the second connection section being operated in the opposite direction to a rotary movement of the inner kelly rod.
  • a particularly precise coordination of the rotary movement can be achieved according to a further development of the invention in that the rotary device depends on the speed of the inner Kelly rod or the drill drive is operated.
  • a speed setting of the drill drive can be used directly as a specification for the rotating device.
  • the speed of the inner Kelly rod or the drill drive can be detected by a rotary pick-up and used to control the rotary device.
  • a drill 10 according to FIG 1 includes a crawler chassis as an undercarriage 12, on which a superstructure 14 is rotatably mounted.
  • a substantially vertical mast 20 is pivoted on the superstructure 14 and can be adjusted with regard to a mast inclination by means of an adjusting arrangement 18 with hydraulic cylinders. Attached to an upper end of the mast 20 is a mast head 22 over which a carrying cable 30 is guided to a winch 16 on the superstructure 14 .
  • a Kelly bar arrangement 40 according to the invention is suspended from the supporting cable 30 by means of a cable suspension 60 .
  • the Kelly bar arrangement 40 is guided in a basically known manner through an annular drill drive 24 , which is also referred to as a top drive and is mounted on a carriage 25 so that it can be moved vertically along a guide on a front side of the mast 20 .
  • Attached to a lower end of the Kelly bar arrangement 40 is a tillage tool 26 which, in the exemplary embodiment shown, is designed as a drilling bucket with lower removal teeth.
  • the Kelly bar arrangement 40 can be moved in the vertical direction relative to the drill drive 24 .
  • the Kelly bar arrangement 40 enables a soil cultivation tool 26 to be suspended from a cable while at the same time enabling torque to be transmitted from the drill drive 24 to the soil cultivation tool 26.
  • the kelly bar assembly 40 includes an outer kelly bar 42 with outer drive bars 46, an inner kelly bar 50 with outer drive bars 53, and an intermediate kelly bar 48 with outer drive bars 49 therebetween.
  • the outer kelly rod 42, the intermediate kelly rod 48 and the inner kelly rod 50 are each axially displaceable with respect to one another, with the torque being transferred in a basically known manner from the outer kelly rod 42 to the intermediate kelly rod 48 and from this to the inner kelly rod 50 independently of the respective axial adjustment position can be transmitted.
  • locking pockets can be provided on the individual rod elements, so that axial forces can also be transmitted to a certain extent via the Kelly rod arrangement 40 in a locked state.
  • a sleeve-shaped support section 44 with a radial support surface is provided in an upper region of the outer Kelly bar 42 , with which the outer Kelly bar 42 and thus the Kelly bar arrangement 40 as a whole can be placed on the drill drive 24 .
  • the Kelly bar arrangement 40 as a whole is suspended from the supporting cable 30 via the inner Kelly bar 50 via a cable suspension 60 .
  • An annular support plate 57 is arranged on its lower end area 54, on which the outer kelly rod 42 and the intermediate kelly rod 48 in the retracted state according to 3 are put on. Furthermore, at the lower end area is 54 the inner Kelly rod 50 is provided with a connecting device 58 for the detachable attachment of the tillage tool 26 . In the illustrated embodiment, this is a square section with a transverse bore for receiving a locking bolt. Furthermore, a damping device 56 can be provided at the lower end region 54 of the inner kelly rod 50, as is shown in FIGS figures 2 and 3 is shown. The damping device 56 can serve to dampen axial impacts when telescoping the Kelly bar arrangement 40 in and out or when placing the tillage tool 26 on the ground.
  • the inner kelly bar 50 and thus the kelly bar arrangement 40 as a whole is suspended from the carrying cable 30 by means of the cable suspension 60 .
  • the carrying cable 30 is provided with a cable eye 63 which is connected to an upper articulation area 62 of the cable suspension 60 via a transverse retaining bolt 61 .
  • a lower articulation area 64 of the cable suspension 60 is connected to the inner kelly rod 50 via a connecting bolt 67 and a connecting piece 65 .
  • a rotary joint for forming a cable swivel 66 is arranged between the upper articulation area 62 and the lower articulation area 64 of the cable suspension 60 . The rotary joint permits rotation about the cable longitudinal axis between the upper articulation area 62 and the lower articulation area 64 in order to prevent twisting of the carrying cable 30 when the drill rod arrangement 40 is driven in rotation.
  • a rotary feedthrough 70 with a lower first connection section 72 and an upper second connection section 74 is arranged in a highly schematic manner on the upper end region 54 of the inner Kelly rod 50 .
  • the inner Kelly bar 50 is non-rotatably connected to the lower first connection section 72, while the upper second connection section 74 is fixedly connected to the connecting piece 65 and the cable suspension 60.
  • the first connection section 72 and the second connection section 74 of the rotary feedthrough 70 are rotatably mounted relative to one another and form a line connection.
  • an upper feed line 36 is provided in a highly schematic manner, which is fed in particular from the drilling device 10 and in particular the superstructure 14 from above the Kelly bar arrangement 40 .
  • the rotary union 70 forms a line connection to a line 55 on the inner kelly rod 50.
  • the line 55 is designed as a fluid line in the cavity 51 of the tubular inner kelly rod 50 in the illustrated embodiment.
  • the supply line 36 can also supply a fluid and, as indicated in the exemplary embodiment shown, can also form a power supply for a rotary device 80 according to the invention with a drive motor 82 .
  • the drive motor 82 is arranged on the upper second connection section 74 of the rotary feedthrough 70 and can rotate this relative to the lower first connection section 72 .
  • a gear arrangement can be provided for this purpose.
  • the rotary feedthrough 70 according to the invention with rotary device 80 makes it possible to ensure that the upper second connecting section 74 with the feed line 36 is stationary even without a fixed support for the upper second connecting section 74, in particular by driving the drive motor 82 in the opposite direction, even if the inner kelly rod 50 is connected to the lower first connection section 72 of the rotary feedthrough 70 is driven in rotation.
  • the Kelly bar arrangement 40 according to the invention with the rotary device 80 thus ensures reliable functioning of the rotary feedthrough 70, even when the Kelly rod arrangement 40 is fully extended and the cable suspension 60 with the rotary feedthrough 70 and the rotary device 80 is located at a lower region of the intermediate Kelly rod 48.

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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)

Claims (13)

  1. Ensemble de tiges d'entraînement (tiges Kelly) pour un appareil de forage (10), en particulier un appareil de forage du sol, avec une tige d'entraînement externe (42) tubulaire, laquelle est réalisée pour reposer sur un mécanisme d'entraînement de forage (24) et pour recevoir un couple de forage du mécanisme d'entraînement de forage (24), et
    avec une tige d'entraînement interne (50), laquelle est montée de manière à pouvoir coulisser à l'intérieur de la tige d'entraînement externe (42) et présente une suspension de câble (60), le couple de forage pouvant être transmis entre la tige d'entraînement externe (42) et la tige d'entraînement interne (50),
    caractérisé en ce que
    au moins une conduite (55) est disposée sur le tube d'entraînement interne (50),
    en ce qu'un passage tournant (70) avec une première section de raccordement (72) et une deuxième section de raccordement (74) est disposé sur une zone d'extrémité (52) inférieure ou supérieure de la tige d'entraînement interne (50), la première section de raccordement (72) étant reliée de manière solidaire en rotation à la tige d'entraînement interne (50) pouvant être entraînée en rotation et formant également une liaison de conduite avec l'au moins une conduite (55) de la tige d'entraînement interne (50) et la deuxième section de raccordement (74) étant reliée à une conduite d'amenée (36), laquelle est immobile par rapport à la tige d'entraînement interne (50) pouvant être entraînée en rotation, et
    en ce qu'un dispositif de rotation (80) destiné à faire tourner activement les deux sections de raccordement (72, 74) l'une par rapport à l'autre est disposé sur le passage tournant (70).
  2. Ensemble de tiges d'entraînement selon la revendication 1,
    caractérisé en ce que
    le passage tournant (80) est disposé sur la tige d'entraînement interne (50) en-dessous de la suspension de câble (60).
  3. Ensemble de tiges d'entraînement selon l'une des revendications 1 ou 2,
    caractérisé en ce que
    le dispositif de rotation (80) présente au moins un moteur d'entraînement (82) destiné à faire tourner activement la deuxième section de raccordement (74) par rapport à la première section de raccordement (72).
  4. Ensemble de tiges d'entraînement selon la revendication 3,
    caractérisé en ce que
    le moteur d'entraînement (82) est disposé sur la deuxième section de raccordement (74), laquelle se situe au-dessus de la première section de raccordement (72).
  5. Ensemble de tiges d'entraînement selon la revendication 3 ou 4,
    caractérisé en ce que
    le moteur d'entraînement (82) est un moteur électrique ou un moteur hydraulique.
  6. Ensemble de tiges d'entraînement selon l'une des revendications 1 à 5,
    caractérisé en ce que
    la suspension de câble (60) présente un émerillon (66).
  7. Ensemble de tiges d'entraînement selon l'une des revendications 1 à 6,
    caractérisé en ce que
    il est prévu en tant qu'une conduite (55) un espace creux axial (51) de la tige d'entraînement interne (50), lequel est réalisé pour guider un fluide.
  8. Ensemble de tiges d'entraînement selon l'une des revendications 1 à 7,
    caractérisé en ce que
    il est prévu en tant qu'une conduite (55) sur la tige d'entraînement interne (50) un câble, lequel est réalisé pour acheminer du courant et/ou des données.
  9. Appareil de forage, en particulier appareil de forage du sol, avec un mécanisme d'entraînement de forage (24),
    caractérisé en ce que
    un ensemble de tiges d'entraînement (40) selon l'une des revendications 1 à 8 est disposé.
  10. Appareil de forage selon la revendication 9,
    caractérisé en ce que
    une commande pour le dispositif de rotation (80) est prévue, et
    en ce qu'un capteur de rotation est prévu pour déterminer une vitesse de rotation et/ou un sens de rotation au moins de la tige d'entraînement interne (50), lequel est en communication de signaux avec la commande.
  11. Appareil de forage selon la revendication 9 ou 10,
    caractérisé en ce que
    le dispositif de rotation (80) est entraîné de manière commandée par le dispositif de commande de sorte que la deuxième section de raccordement (74) du passage tournant (70) est entraînée et synchronisée à l'opposé d'un mouvement de rotation de la tige d'entraînement interne (50).
  12. Procédé de travail du sol, avec un appareil de forage (10) selon l'une des revendications 9 à 11, où un ensemble de tiges d'entraînement (40) est mis en rotation au moyen du mécanisme d'entraînement de forage (24), dans lequel un outil de travail du sol (26) est installé sur une tige d'entraînement interne (50) de l'ensemble de tiges d'entraînement (40), lequel travaille un sol,
    caractérisé en ce que
    un dispositif de rotation (80) est prévu pour faire tourner activement la deuxième section de raccordement (74) par rapport à la première section de raccordement (72), dans lequel la deuxième section de raccordement (74) fonctionne à l'opposé d'un mouvement de rotation de la tige d'entraînement interne (50).
  13. Procédé selon la revendication 12,
    caractérisé en ce que
    le dispositif de rotation (80) fonctionne en fonction d'une vitesse de rotation de la tige d'entraînement interne (50) ou du mécanisme d'entraînement de forage (24).
EP20750664.3A 2019-08-16 2020-08-04 Dispositif de tige d'entraînement pour un appareil de forage et procédé de traitement du sol Active EP3877624B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP19192058.6A EP3779117A1 (fr) 2019-08-16 2019-08-16 Dispositif de tige d'entraînement pour un appareil de forage et procédé de traitement du sol
PCT/EP2020/071850 WO2021032461A1 (fr) 2019-08-16 2020-08-04 Arrangement de tiges d'entraînement pour un dispositif de forage et procédé de travail du sol

Publications (2)

Publication Number Publication Date
EP3877624A1 EP3877624A1 (fr) 2021-09-15
EP3877624B1 true EP3877624B1 (fr) 2022-04-20

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Family Applications (2)

Application Number Title Priority Date Filing Date
EP19192058.6A Withdrawn EP3779117A1 (fr) 2019-08-16 2019-08-16 Dispositif de tige d'entraînement pour un appareil de forage et procédé de traitement du sol
EP20750664.3A Active EP3877624B1 (fr) 2019-08-16 2020-08-04 Dispositif de tige d'entraînement pour un appareil de forage et procédé de traitement du sol

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EP19192058.6A Withdrawn EP3779117A1 (fr) 2019-08-16 2019-08-16 Dispositif de tige d'entraînement pour un appareil de forage et procédé de traitement du sol

Country Status (7)

Country Link
US (1) US11939821B2 (fr)
EP (2) EP3779117A1 (fr)
CN (1) CN114127382B (fr)
AU (1) AU2020333796B2 (fr)
CA (1) CA3138200C (fr)
SG (1) SG11202111447YA (fr)
WO (1) WO2021032461A1 (fr)

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EP3882398B1 (fr) * 2020-03-17 2023-08-23 BAUER Maschinen GmbH Tige de forage et procédé pour mise à niveau d'un agencement de tige carrée
EP4060161B1 (fr) * 2021-03-18 2023-06-28 BAUER Maschinen GmbH Douille de câble
EP4245923B1 (fr) * 2022-03-18 2024-05-15 BAUER Maschinen GmbH Engin électrique de génie civil et procédé associé de son utilisation

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DE102012019850A1 (de) * 2012-10-10 2014-04-10 Liebherr-Werk Nenzing Gmbh Verfahren und Vorrichtung zur Überwachung eines Bohrgestänges
EP2821585B1 (fr) 2013-07-03 2016-01-20 Bauer Spezialtiefbau GmbH Dispositif de forage et procédé de forage
CN203499709U (zh) * 2013-09-27 2014-03-26 河北煜丰矿山机械制造有限公司 一种锚杆机扭矩传递装置
CN104763328B (zh) * 2015-04-02 2017-03-08 宁波易和桩基工程技术开发有限公司 一种液压扩孔循环钻机及其扩孔桩施工工艺
EP3124740B1 (fr) * 2015-07-27 2019-04-03 BAUER Spezialtiefbau GmbH Dispositif de forage et procédé d'établissement d'un forage depuis une plateforme flottante
ITUB20159641A1 (it) * 2015-12-18 2017-06-18 Soilmec Spa Dispositivo e metodo per la movimentazione e l?assemblaggio reciproco di segmenti di una batteria di scavo, per esempio segmenti di elica o di asta.
PL3228756T5 (pl) * 2016-04-04 2023-07-03 Bauer Maschinen Gmbh Maszyna robocza i sposób obrabiania gruntu
EP3287588B1 (fr) * 2016-08-24 2019-05-22 BAUER Maschinen GmbH Machine de travail et procédé destiné au travail d'un sol
IT201600090502A1 (it) * 2016-09-07 2018-03-07 Soilmec Spa Macchina da perforazione.
CN106437513B (zh) * 2016-09-26 2018-07-27 中国石油大学(华东) 一种复杂结构井减摩阻及动力钻具工具面调整方法
EP3456914B1 (fr) * 2017-09-19 2023-06-21 Eurodrill GmbH Dispositif de forage double tête et procédé de réalisation d'un forage

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SG11202111447YA (en) 2021-11-29
CN114127382B (zh) 2024-05-07
EP3877624A1 (fr) 2021-09-15
US11939821B2 (en) 2024-03-26
EP3779117A1 (fr) 2021-02-17
AU2020333796A1 (en) 2021-11-18
WO2021032461A1 (fr) 2021-02-25
AU2020333796A9 (en) 2022-02-17
US20220220814A1 (en) 2022-07-14
CA3138200C (fr) 2023-09-19
WO2021032461A8 (fr) 2022-01-20
AU2020333796B2 (en) 2022-09-15
CA3138200A1 (fr) 2021-02-25
CN114127382A (zh) 2022-03-01

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