EP4372202A1 - Appareil de forage dans le trou et procédé de réalisation d'un forage dans le sol - Google Patents

Appareil de forage dans le trou et procédé de réalisation d'un forage dans le sol Download PDF

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Publication number
EP4372202A1
EP4372202A1 EP22207610.1A EP22207610A EP4372202A1 EP 4372202 A1 EP4372202 A1 EP 4372202A1 EP 22207610 A EP22207610 A EP 22207610A EP 4372202 A1 EP4372202 A1 EP 4372202A1
Authority
EP
European Patent Office
Prior art keywords
hole drilling
drill head
drilling device
extension
base frame
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.)
Granted
Application number
EP22207610.1A
Other languages
German (de)
English (en)
Other versions
EP4372202B1 (fr
Inventor
Roland Braun
Kai GREVING
David Reil
Andreas SCHUELL
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
Original Assignee
Bauer Maschinen 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 Bauer Maschinen GmbH filed Critical Bauer Maschinen GmbH
Priority to EP22207610.1A priority Critical patent/EP4372202B1/fr
Publication of EP4372202A1 publication Critical patent/EP4372202A1/fr
Application granted granted Critical
Publication of EP4372202B1 publication Critical patent/EP4372202B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • 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
    • E21B10/32—Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers with expansible cutting tools
    • 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
    • E21B7/208—Driving or forcing casings or pipes into boreholes, e.g. sinking; Simultaneously drilling and casing boreholes using down-hole drives
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D1/00—Sinking shafts
    • E21D1/03—Sinking shafts mechanically, e.g. by loading shovels or loading buckets, scraping devices, conveying screws
    • E21D1/06—Sinking shafts mechanically, e.g. by loading shovels or loading buckets, scraping devices, conveying screws with shaft-boring cutters
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D1/00—Sinking shafts
    • E21D1/08—Sinking shafts while moving the lining downwards

Definitions

  • the invention relates to a down-the-hole drilling device for creating a bore in the ground, with a base frame, a drill head which is arranged on an underside of the base frame and is rotatably mounted, a drill drive for rotatingly driving the drill head, removal elements arranged on the drill head for removing soil material and at least one extension element with removal element which is adjustable from a radially retracted retraction position on the drill head to an extension position projecting radially relative to the drill head and is designed to remove soil material in order to produce a diameter extension, according to the preamble of claim 1.
  • the invention further relates to a method for creating a borehole in the ground, according to the preamble of claim 14.
  • a drilling head is used to create bores for offshore anchoring.
  • the drilling head has radially pivoting extension elements, which can be pivoted out and in radially by hydraulic cylinders.
  • the hydraulic cylinders are connected to the drilling head and the removal elements in a rotationally fixed manner. This arrangement therefore requires the transfer of hydraulic fluid from a base frame to the rotating drilling head.
  • the document CN 203188913 U discloses a drill head with axially directed actuating cylinders arranged thereon.
  • Hydraulic cylinders on the drill head are extended axially, whereby a sliding sleeve on the drill head is pushed axially upwards.
  • the sliding sleeve is coupled to a lever mechanism, by means of which the extension elements are pivoted radially outwards.
  • a drill head with an underreamer arrangement is produced, which has swiveling arms with removal elements.
  • a cam-like adjusting element is arranged in the middle, which can be adjusted between two axial positions. This adjusting element is operated hydraulically.
  • the drill head is intended for oil or gas drilling on a drill string, so that even with this arrangement, hydraulic energy must be transferred to the rotating drill head.
  • the document CN107060645A teaches a down-the-hole drilling rig with a fixed part that can be secured against a borehole wall or a surrounding support pipe by means of radial actuating cylinders.
  • An axial feed force can be transmitted to the drill head underneath by means of axially directed actuating cylinders, with the lower ends of the pistons of the actuating cylinders being supported on an axial bearing.
  • Radially extendable removal elements are provided on the drill head, which can be extended via hydraulic cylinders on the drill head.
  • the document WO 2021/013838 relates to a drilling head with a special design of the suction box. Radially extendable and retractable edge cutting tools are also disclosed. These are swiveled in and out using hydraulic cylinders. The hydraulic cylinders are arranged on the rotating drill head, so that a transfer of hydraulic fluid to the rotating drill head is also necessary here.
  • the invention is based on the object of specifying a down-the-hole drilling device and method for creating a borehole in the ground, with which a diameter expansion can be produced in a particularly efficient manner by means of radially extendable expansion elements.
  • the in-hole drilling device is characterized in that an adjustment arrangement is provided for radial adjustment, which has at least one actuator attached to the frame, by means of which at least one actuating member mounted on the base frame can be adjusted between a first position and a second position, and that an adjustment mechanism is arranged on the drill head, which rotates with the drill head and is operatively connected to the actuating member, which does not rotate with the drill head, so that when the actuating member is adjusted from the first position to the second position, the at least one extension element can be radially adjusted from the retracted position to the extended position.
  • a basic idea of the invention is not to arrange the energy-operated actuator for adjusting the at least one extension element on the rotating drill head itself.
  • the actuator is attached to the base frame so that the actuator does not rotate with the drill head. This enables the actuator to be easily supplied with energy, in particular with electrical current or in particular hydraulic fluid. Compared to the prior art, the arrangement according to the invention can therefore dispense with a maintenance-intensive and fault-prone rotary feedthrough for transferring hydraulic fluid to a rotating drill head.
  • the actuator on the base frame operates and adjusts an actuating member, which is also mounted directly on the base frame and does not rotate with the drill head.
  • An adjustment mechanism on the drill head can be operated by the adjustment movement of the at least one actuating member.
  • the adjustment mechanism on the drill head is designed to be non-rotatable on it, so that the adjustment mechanism rotates with the drill head.
  • the adjustment mechanism can convert an adjustment movement of the actuating member into a desired radial adjustment movement of the extension element. A loose contact or a Rotating coupling is sufficient, although a certain amount of friction may occur with the rotating adjustment mechanism.
  • the actuator and the actuating element should preferably no longer be in direct contact so that no more friction occurs.
  • the axial bearing can have play so that there is no friction in the end positions.
  • the adjustment movement must be greater by the amount of play in order to move the extension elements into the appropriate positions.
  • the power transmission for drilling takes place via the drill string, not via the adjustment mechanism. When drilling, the distance between the base frame and the drill always remains the same.
  • the actuating member comprises at least one shaft which is mounted on the base frame so as to be axially displaceable between the first position and the second position.
  • several shafts can also be provided, which are then preferably arranged parallel to one another, preferably around the drilling axis.
  • the actuating member can preferably carry out an adjustment movement in the axial direction, which is then converted into a radial movement of the extension element by the adjustment mechanism.
  • the actuating member it is particularly expedient for the actuating member to have a sleeve-shaped shaft or a ring which is arranged coaxially to the drilling axis.
  • a uniform adjusting force can thus be exerted on the adjusting mechanism via a sleeve-shaped or ring-shaped element.
  • the actuator can in principle be designed in any suitable manner. According to one embodiment of the invention, it is particularly preferred that the actuator has at least one actuating cylinder, in particular a hydraulic cylinder.
  • the actuator is powered by energy, whereby the arrangement of the actuator on the non-rotating base frame enables a simple energy supply.
  • the actuator generates a mechanical adjustment movement, which can then be transferred from the non-rotating base frame to the adjustment mechanism on the rotating drill head.
  • the adjustment mechanism on the drill head can be designed in any way, provided that a radial adjustment movement of the extension element is achieved as a result of the actuation of the actuating member.
  • the adjustment mechanism has at least one lever arrangement by means of which an axial adjustment movement of the actuating member can be converted into a radial adjustment movement of the extension element.
  • the lever arrangement can have one or more articulated and/or rotatably mounted levers which absorb an axial actuating movement of the actuating member and transfer this into a desired radial adjustment movement of the extension element.
  • the radial adjustment movement has a radial movement component, but can also additionally comprise one or more movement components, in particular in an axial direction.
  • extension elements and associated lever arrangements are arranged distributed over the circumference of the drill head.
  • a single extension element is sufficient to achieve an increase in diameter at the bore.
  • an increase in diameter at the bore can be achieved in a particularly efficient manner.
  • Each radially adjustable extension element can be assigned its own lever arrangement.
  • the extension element has in particular a removal element which can remove material in a radial and/or axial circumferential direction.
  • a particularly robust design is achieved according to a further development of the invention in that a control ring is provided which is coupled to at least one lever of the adjustment mechanism, wherein the control ring is mounted so as to be axially adjustable.
  • the control ring is preferably arranged coaxially to the drilling or longitudinal axis of the drilling device.
  • the control or adjustment ring can be adjusted by a central actuating element, in particular a sleeve-shaped shaft or a ring on the side of the base frame.
  • the control ring can be coupled directly or indirectly, for example via an intermediate link or a link rod, to the lever of the adjustment mechanism.
  • a particularly useful embodiment of the invention consists in the fact that an axial bearing is arranged between the adjustment mechanism on the drill head and the actuating member on the base frame.
  • An axial bearing is particularly advantageous when arranging a coaxial control ring and a coaxial sleeve-shaped shaft or ring on the actuating member to reduce contact friction.
  • stop elements are provided to limit the adjustment movement.
  • the stop elements can be provided to limit an adjustment path of the extension element and/or elements on the adjustment mechanism.
  • the drilling drive can basically be arranged at any suitable location.
  • the drilling drive is attached to the axially non-moving part of the in-hole drilling device. This allows a simple energy supply to the drilling drive, which can be carried out in particular via electrical current or preferably hydraulic fluid.
  • a further advantageous embodiment of a down-the-hole drilling device consists in that one or more clamping elements are arranged on the base frame or a support element, which can be extended radially in order to clamp the down-the-hole drilling device into a borehole.
  • the clamping elements are designed in such a way that they can be contacted directly on a borehole wall and/or on an inserted support tube.
  • the clamping elements in particular have hydraulic cylinders with which corresponding stamping plates can be extended radially. In this way, the base frame or an independent support element can be fixed to the surrounding wall and a torque of a drilling drive can be supported on the support tube or the borehole wall.
  • the drill head can be mounted on the base frame so that it can rotate, with adjustment being carried out by pushing the base frame of the in-hole drilling device.
  • efficient drilling is achieved by the drill head being mounted so that it can rotate and be axially adjusted relative to the base frame.
  • a telescopic drill drive shaft can be provided between the drill drive and the drill head, which allows a certain axial feed movement of the drill head relative to a fixed base frame.
  • axial feed elements in particular hydraulic cylinders, can also be provided between the base frame and the drill head, with which an additional propulsive force can be exerted on the drill head.
  • the down-hole drilling device can be used in particular on a crane or rope suspension for drilling on land. According to one embodiment of the invention, it is expedient for the down-hole drilling device to be designed for use under water. Appropriate seals are provided for this purpose.
  • a suction device for sucking away removed soil material together with surrounding liquid can also be provided on the base frame or on the drill head.
  • the at least one extension element with removal element is designed to remove soil material in a radial and/or axial direction.
  • the removal tooth can remove material not only in a radial direction but also or alternatively in an axial direction in order to remove the material radially outside the normal drilling diameter or the inner diameter of the support tube when extended.
  • the extension element can already be extended at the start of drilling.
  • the at least one extension element can be retracted radially again in order to be able to pull the drilling device out of the support tube.
  • the support tube can be retracted axially by a certain amount, releasing an annular space into which the extension element can be radially inserted.
  • the method according to the invention for creating a borehole in the ground is characterized in that an in-hole drilling device according to the invention is used. This allows the previously described advantages to be achieved during operation.
  • the down-the-hole drilling device can be used directly in the ground.
  • a support pipe is provided in the borehole, which is inserted into the ground beforehand or during the insertion of the down-the-hole drilling device. Reliable stabilization of the borehole is achieved, particularly in the case of loose soil or soil layers.
  • the support pipe can remain in the borehole after it has been drilled, or it can be pulled out again when a foundation element is inserted and formed in the borehole.
  • the down-hole drilling device 10 basically has an elongated upper structure, at the upper end of which a holding device (not shown) is arranged.
  • the holding device is designed to hold the down-hole drilling device 10 on a support cable or a support rod and can, for example, have a hook receptacle.
  • the down-hole drilling device 10 can have a base frame 12 and an upper end region on which one or more drilling drives 70 are designed for rotatingly driving a drill string 22 with the lower drill head 20.
  • First clamping elements 74 can be arranged on the upper end region, which can be extended radially and are designed to clamp the upper end region to a bore wall or a surrounding support tube.
  • a part of the base frame 12, on which the drill head 20 can also be mounted, can be axially adjustable by means of axially directed feed elements 72, which preferably comprise hydraulic cylinders.
  • the axially displaceable part can be clamped and fixed radially relative to a bore wall or a surrounding support tube via second clamping elements 46.
  • the second clamping elements 76 can be designed to be the same or largely the same as the first clamping elements 74.
  • a drill head 20 with removal elements 34 for removing soil material is formed.
  • the removal elements 34 can be fixed teeth or rotatably mounted rollers, which are detachably received in holders 24.
  • the drill head 20 can be driven via the one or more drill drives 70 in the upper region of the down-hole drilling device 10 via the tubular drill string 22, rotating about a usually vertical drilling axis. Drilling fluid can be supplied and/or removed via the hollow drill string 22.
  • the drill string 22 is designed in a basically known manner for carrying out a drilling step by means of the feed elements designed as feed cylinders. 72 can be moved axially relative to the drilling drive 70.
  • the second clamping elements 76 shown can be arranged on the in-hole drilling device 1 and can be extended radially to clamp the in-hole drilling device 10 to a wall of the hole in the ground or the inner wall of a support tube (not shown).
  • Radially directed guide elements 13 can be arranged on the base frame 10 for centering in the bore.
  • Soil material removed during drilling is sucked away together with the surrounding liquid by means of a suction device 14 on the drill head 20.
  • Suction openings can be arranged on the drill head 20, through which the removed soil material is pumped upwards with liquid by means of a suction pump, suction line 16 and a suction device 14.
  • the suction line 16 can run partially outside and/or inside the drill string 22.
  • each extension element 30 is arranged on the drill head 20, which in the embodiment shown each comprise a roller-shaped removal element 34. Via an adjustment mechanism 40 with a lever arrangement 41 each extension element can be adjusted between a retraction position, which is in the Figures 3 and 4 shown, and a radially projecting extension position according to Fig.5 be adjusted.
  • the lever arrangement 41 which is shown in more detail in the Figures 3 to 6 shown, comprises an extension element 30 which is pivotably mounted about a transversely directed bearing pin 43 and on which the roller-shaped removal element 34 can remove soil axially as well as radially.
  • the pivoting movement can be limited by stop elements 26.
  • a link rod 64 is coupled via a second joint 46 to a radially directed projection 31 of the extension element 30, which is directed essentially parallel to the drilling axis.
  • the link rod 64 is connected in an articulated manner to a sleeve-shaped, axially displaceable shaft 62 with an adjusting ring 63 of an actuating member 60.
  • the lever arrangement 41 can therefore comprise the extension element 30, the bearing pin 43, the linkage rod 64 and the two joints 44 and 46 at the ends of the
  • the adjusting mechanism 40 can also comprise the actuator 50 with the actuating cylinder 52 (with cylinder housing 53 and piston 54) and the actuating member 60 with shaft 62 and adjusting ring 63.
  • the lever arrangement 41 is made in particular from Fig.6 in which, for reasons of clarity, the drill head 20 attached to the drill string 22 is omitted.
  • the adjustment of the extension elements 30 with removal elements 34 is carried out by means of an actuator 50, which is described below in particular in connection with the Figures 7 and 8th
  • the actuator 50 is fixedly attached to the base frame 12 and has at least one or preferably several actuating cylinders 52 arranged around the drilling axis.
  • a piston 54 can be extended axially downwards from a cylinder housing 53.
  • the piston 54 is connected to an annular control ring 28, wherein the actuating member 60, which is coupled to the control ring 28 via an axial bearing 18 and when the piston 54 is extended from the first position according to Fig.7 into the second extended position according to Fig.8 is moved downwards.
  • the actuating member 60 is also moved downwards with the control ring 28.
  • An axial bearing 18, only indicated schematically, is arranged between the control ring 28 and the actuating member 60, which creates an axial connection between the actuating member 60 and the control ring 28, but in which a rotational decoupling is formed.
  • the actuating member 60 can thus rotate with the drill head 20, while the axially adjustable control ring 28 is arranged together with the actuator 50 in a rotationally fixed manner on the base frame 12.
  • an axial movement can be transmitted from the actuator 50 fixed to the base frame 12 with the actuating cylinders 52 to the drill head 20 rotating relative to the base frame 12 with the rotating actuating member 60.
  • the actuating member 60 is connected to the link rods 64 via an adjusting ring 63 and a first joint 44.
  • the individual extension elements 30 with removal elements 34 can be actuated to extend and retract via the link rods 64.
  • the link rods 64 can be adjustable in length to adjust the extension elements 30.
  • the described adjustment mechanism 40 with the lever arrangements 41 provides a simple and robust adjustment option for an extension element 30 with a removal element 34.
  • the adjustment arrangement 40 can be secured in particular in the radially retracted position of the extension elements 30 by means of a locking device 80 with a spring-loaded locking bolt 82, as clearly shown in Fig.9 This can ensure that no axial frictional forces occur in the elements after actuation of the adjustment mechanism 40. To expand radially, the locking bolt 82 is released.

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  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • Earth Drilling (AREA)
EP22207610.1A 2022-11-15 2022-11-15 Appareil de forage dans le trou et procédé de réalisation d'un forage dans le sol Active EP4372202B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP22207610.1A EP4372202B1 (fr) 2022-11-15 2022-11-15 Appareil de forage dans le trou et procédé de réalisation d'un forage dans le sol

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP22207610.1A EP4372202B1 (fr) 2022-11-15 2022-11-15 Appareil de forage dans le trou et procédé de réalisation d'un forage dans le sol

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EP4372202A1 true EP4372202A1 (fr) 2024-05-22
EP4372202B1 EP4372202B1 (fr) 2024-10-09

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Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3799276A (en) * 1971-10-30 1974-03-26 Kumagai Gumi Co Ltd Fluid driven below ground motor for sinking a caisson
US3938598A (en) * 1975-05-14 1976-02-17 Watts James P Belling apparatus
DE2824441A1 (de) * 1977-06-06 1978-12-14 Tokyo Keiki Kk Erdbohrer
GB2319046A (en) 1996-11-04 1998-05-13 Baker Hughes Inc Integrated directional under-reamer and stabilizer
CN203188913U (zh) 2013-04-17 2013-09-11 嘉力臣工程设备(深圳)有限公司 一种扩底钻头
GB2522062A (en) 2014-01-14 2015-07-15 Fugro Seacore Ltd Drill Bit Assembly
CN107060645A (zh) 2017-05-05 2017-08-18 中国葛洲坝集团第五工程有限公司 深水桩基施工用潜水钻机
WO2021013838A2 (fr) 2019-07-24 2021-01-28 Herrenknecht Ag Tête de forage pour réaliser un forage dans le sol

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3799276A (en) * 1971-10-30 1974-03-26 Kumagai Gumi Co Ltd Fluid driven below ground motor for sinking a caisson
US3938598A (en) * 1975-05-14 1976-02-17 Watts James P Belling apparatus
DE2824441A1 (de) * 1977-06-06 1978-12-14 Tokyo Keiki Kk Erdbohrer
GB2319046A (en) 1996-11-04 1998-05-13 Baker Hughes Inc Integrated directional under-reamer and stabilizer
CN203188913U (zh) 2013-04-17 2013-09-11 嘉力臣工程设备(深圳)有限公司 一种扩底钻头
GB2522062A (en) 2014-01-14 2015-07-15 Fugro Seacore Ltd Drill Bit Assembly
CN107060645A (zh) 2017-05-05 2017-08-18 中国葛洲坝集团第五工程有限公司 深水桩基施工用潜水钻机
WO2021013838A2 (fr) 2019-07-24 2021-01-28 Herrenknecht Ag Tête de forage pour réaliser un forage dans le sol

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