EP3645823B1 - Vertikales bohrsystem vom schneckentyp mit trajektoriekorrekturvorrichtung - Google Patents

Vertikales bohrsystem vom schneckentyp mit trajektoriekorrekturvorrichtung

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Publication number
EP3645823B1
EP3645823B1 EP18730798.8A EP18730798A EP3645823B1 EP 3645823 B1 EP3645823 B1 EP 3645823B1 EP 18730798 A EP18730798 A EP 18730798A EP 3645823 B1 EP3645823 B1 EP 3645823B1
Authority
EP
European Patent Office
Prior art keywords
drilling
hollow core
deviation
driving device
trajectory
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
EP18730798.8A
Other languages
English (en)
French (fr)
Other versions
EP3645823A1 (de
Inventor
Gérard Cardona
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.)
Soletanche Freyssinet SA
Original Assignee
Soletanche Freyssinet SA
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 Soletanche Freyssinet SA filed Critical Soletanche Freyssinet SA
Publication of EP3645823A1 publication Critical patent/EP3645823A1/de
Application granted granted Critical
Publication of EP3645823B1 publication Critical patent/EP3645823B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B44/00—Automatic control systems specially adapted for drilling operations, i.e. self-operating systems which function to carry out or modify a drilling operation without intervention of a human operator, e.g. computer-controlled drilling systems; Systems specially adapted for monitoring a plurality of drilling variables or conditions
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D27/00—Foundations as substructures
    • E02D27/10—Deep foundations
    • E02D27/12—Pile foundations
    • 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
    • E02D5/22—Piles
    • E02D5/34—Concrete or concrete-like piles cast in position ; Apparatus for making same
    • E02D5/38—Concrete or concrete-like piles cast in position ; Apparatus for making same making by use of mould-pipes or other moulds
    • E02D5/44—Concrete or concrete-like piles cast in position ; Apparatus for making same making by use of mould-pipes or other moulds with enlarged footing or enlargements at the bottom of the pile
    • 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
    • E02D5/22—Piles
    • E02D5/34—Concrete or concrete-like piles cast in position ; Apparatus for making same
    • E02D5/46—Concrete or concrete-like piles cast in position ; Apparatus for making same making in situ by forcing bonding agents into gravel fillings or the soil
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D7/00—Methods or apparatus for placing sheet pile bulkheads, piles, mouldpipes, or other moulds
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B10/00—Drill bits
    • E21B10/44—Bits with helical conveying portion, e.g. screw type bits; Augers with leading portion or with detachable parts
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B47/00—Survey of boreholes or wells
    • E21B47/02—Determining slope or direction
    • E21B47/024—Determining slope or direction of devices in the borehole
    • 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
    • E21B7/06—Deflecting the direction of boreholes
    • E21B7/064—Deflecting the direction of boreholes specially adapted drill bits therefor
    • 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
    • E21B7/10—Correction of deflected boreholes
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D2250/00—Production methods
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D2250/00—Production methods
    • E02D2250/0023—Cast, i.e. in situ or in a mold or other formwork
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D2250/00—Production methods
    • E02D2250/003—Injection of material
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D2250/00—Production methods
    • E02D2250/0038—Production methods using an auger, i.e. continuous flight type
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D2600/00—Miscellaneous
    • E02D2600/10—Miscellaneous comprising sensor means
    • 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
    • E21B7/022—Control of the drilling operation; Hydraulic or pneumatic means for activation or operation

Definitions

  • the present invention relates to the field of manufacturing deep foundations in soil, and in particular to the field of column support, such as piles. It also relates to the construction of foundation piles at ground level, the fabrication of watertight barriers using secant piles, and more generally the construction of any type of wall using secant or contiguous piles, regardless of the function of said wall.
  • Column or pile support refers to all types of support in which piles are installed in the ground: Parisian wall, Berlin wall, secant pile wall, contiguous pile wall, etc.
  • Piles are generally made of concrete or grout. They can also be obtained by a technique of mixing soil and a binder, generally called "soil-mixing".
  • Piles can be reinforced, for example through the use of a reinforcement cage, a tube or a metal profile.
  • a drilling rig known as a continuous auger is commonly used.
  • This rig consists of a hollow core containing a drilling tool made of a helical blade. With this type of drilling rig, the well is drilled in a single pass of the auger to the required depth. To construct the pile core, grout or concrete is injected from the lower end of the auger as it ascends.
  • Deviation generally refers to the distance between the actual position of the auger and its theoretical position at a given depth. It is usually defined as the distance between the actual and theoretical positions divided by the depth and expressed as a percentage, with the distance typically considered in a horizontal plane.
  • One aim of the present invention is to provide a well drilling system in soil that reduces the risk of deviation from the theoretical trajectory.
  • rotation means turning or pivoting the connecting element around the longitudinal axis over one or more turns, or even over a fraction of a turn, in one direction or the other.
  • column we mean any supporting element, and in particular a cast pile.
  • substantially vertical we mean a drilling direction whose deviation from the vertical is between 0° and 5°, preferably between 0° and 1°.
  • the theoretical drilling trajectory can be predetermined before the drilling operation, or determined during drilling with respect to the geometry or orientation of a neighboring column previously constructed in the ground in order to obtain two columns juxtaposed and intersecting along their common length.
  • pilot device particularly in its passive state, can rotate relative to the hollow core, either in the same direction or in the opposite direction.
  • the pilot device in its passive state, can also be prevented from rotating relative to the hollow core.
  • pilot device at least in its active state, extends axially outside the hollow core, beyond its lower end.
  • the pilot device When a deviation in the drilling trajectory from the theoretical drilling trajectory is detected by the deviation measurement device, the pilot device is activated to correct the drilling rig's trajectory. To do this, the pilot device is oriented and held relative to the ground in the angular position The correction angle is determined so that the pilot device modifies the trajectory of the hollow core during the advance of the drilling rig, in order to reduce the deviation from the theoretical drilling trajectory. "Maintaining the angular correction position" means maintaining an angular position of plus or minus 10°, preferably 5°, around said position.
  • maintaining the pilot device relative to the ground is achieved by locking the pilot device in rotation relative to the ground in the angular correction position.
  • the modification of the trajectory of movement of the hollow core is obtained by the fact that the pilot device, when moving in the ground in its active state, tends to move in a direction inclined relative to the longitudinal axis of the hollow core, which has the effect of making it rotate in a vertical plane.
  • the drilling system further comprises a second rotation device, connected to the connecting element, for rotating the connecting element and the pilot device around the longitudinal axis, the connecting element is able to rotate relative to the hollow core, and the control device is configured to actuate the second rotation device when a deviation is measured in order to bring the pilot device into its active state in said angular correction position.
  • the orientation of the pilot device to its angular correction position is achieved by the second rotation device, which rotates the connecting element relative to the ground.
  • the rotational locking of the pilot device relative to the ground is preferably achieved by the second rotation device.
  • the pilot device is returned to its passive state.
  • control device also includes a calculation device to calculate the angular position of correction from the direction of deviation determined by the measuring device.
  • said horizontal plane in which the direction of deviation extends has a frame of reference equipped with at least one axis, and the angular position of the pilot device is determined from an angle between said axis of the frame of reference and the direction of deviation.
  • the pilot device is configured to rotate in the same direction and at the same speed as the hollow core, when said pilot device is in the passive state.
  • the drilling device preferably includes a coupling device to block the rotation of the pilot device relative to the hollow core when said pilot device is in the passive state.
  • This coupling device includes, for example, a dog clutch link.
  • the second rotation device is configured to rotate the pilot device in the opposite direction to the rotation of the hollow core, when said pilot device is in the passive state.
  • Rotating the hollow core and pilot device in opposite directions prevents the drilling device's movement trajectory from changing.
  • the pilot device is also translationally mobile relative to the hollow core, the drilling system further comprising a displacement device for translationally moving the pilot device relative to the hollow core along the longitudinal axis, so that the pilot device has a deployed position and a retracted position.
  • the drilling system may or may not include the aforementioned second rotation device.
  • disengageable dog-type coupling means can be provided to rotationally couple the hollow core and the pilot device.
  • the pilot device is brought to the correction angular position by actuating the first rotation device, the pilot device then being rotationally coupled to the hollow core.
  • the pilot device is brought to the deployed position.
  • the hollow core is advanced by rotating it using the first rotation device until the pilot device is in its retracted position. In this case, the pilot device is held in its angular correction position during deployment by the displacement device.
  • the pilot device When the second rotation device is present, the pilot device is blocked from rotating - during the deployment of the pilot device - by means of the second rotation device.
  • the pilot device in its retracted position, extends slightly beyond the lower end of the hollow core.
  • the pilot device can be entirely housed within the hollow core.
  • the displacement device is configured to move the pilot device in translation relative to the hollow core by jacking, driving or vibratory driving.
  • the pilot device in its active state, the pilot device is in the deployed position, while in its passive state, the pilot device is in the retracted position.
  • the connecting element comprises a dip tube which has a lower part provided with at least one injection hole, the dip tube being connected to a fluid supply source.
  • Such a dip tube is described in particular in FR 2 566 813 and FR 2 831 205. It allows fluid to be injected into the well during the ascent of the drilling rig, in order to create the column.
  • the injection hole is located above the lower end of the hollow core when the pilot device is in the deployed position.
  • This injection hole is therefore also located above the lower end of the hollow core when the pilot device is in the retracted position.
  • the pilot device also includes an injection position in which the injection hole is located below the lower end of the hollow core.
  • the dip tube is preferably brought into the injection position by means of the displacement device which moves the pilot device downwards in translation in order to uncover the injection hole.
  • the measuring device includes a deviation sensor located in the lower part of the hollow core.
  • the deviation sensor allows the measurement of a deviation distance, considered in a horizontal plane, between the actual position of the lower end of the hollow core and the theoretical drilling trajectory, generally vertical.
  • the drilling system further includes a depth-measuring device for the drilling rig.
  • the measuring device is configured to measure the angle of deflection of the hollow core relative to a vertical direction
  • the control device is configured to bring the pilot device into its active state—for example, by activating the second rotation device—when the ratio of the deflection distance to the depth reached by the drilling rig is greater than or equal to a predetermined threshold, this threshold being potentially depth-dependent.
  • control device may be configured to operate only from a certain depth, for example 3 m.
  • the control device can be configured to activate at a depth of 3 m if a deviation greater than 2 cm is detected. Then, at a drilling depth of 15 m, the control device can be configured to activate if a deviation greater than 3 cm is detected.
  • the deviation correction of the drilling device is carried out automatically and continuously during the drilling operation.
  • drilling is carried out continuously, with alternating periods during which the drilling device moves along a trajectory deemed satisfactory, and periods during which the pilot device is locked in rotation in a defined angular position when the trajectory needs to be corrected because the deviation is greater than a predetermined threshold.
  • the drilling device is an auger, for example an auger such as described in FR 2 566 813 Or FR 2 831 205 , or any other type of continuous auger.
  • the pilot device comprises a panel inclined with respect to a vertical plane, and the direction of trajectory correction is the direction corresponding to the intersection between the inclined panel and a vertical plane orthogonal to the inclined panel.
  • the inclined face therefore acts as a kind of forward rudder, in order to modify the trajectory of movement of the hollow core during the penetration of the drilling device into the ground.
  • the pilot device is returned to its passive state.
  • the translational movement of the pilot device in the ground alters the inclination of the connecting element and the hollow core.
  • the hollow core catches up with the pilot device, which is then in a retracted position, the movement trajectory of the hollow core is corrected.
  • the pilot device is returned to its passive state and retracted position.
  • the drilling system comprises a platform 20 on which is mounted a guide mast 22 that is substantially vertical in the operating position. Mounted on this mast is a carriage 24 that can be moved vertically by means of cables 26 connected to a motor (not shown).
  • the carriage 24 carries a first rotation device 28 comprising a drill head 29 which rotates a drilling device 30 having a hollow core 32 equipped with a drilling tool 33, in this case a helical blade extending substantially along the entire length of the hollow core 32.
  • the drilling device 30 is therefore a vertical hollow-core auger.
  • the hollow core 32 extends along a longitudinal axis L which is substantially vertical.
  • a connecting element 36 which is able to rotate relative to the hollow core around the longitudinal axis L.
  • the connecting element 36 has the form of a hollow tube whose lower end is equipped with a pilot device 40, which will be described in more detail below.
  • a movable plate 42 is connected to the drill head 29 via vertical jacks 44. This plate 42, as illustrated in figure 2 , receives the upper end 36a of the connecting element 36.
  • the drilling system further comprises a second rotation device 50, which is connected to the connecting element 36, to rotate the connecting element 36 and the pilot device 40 around the longitudinal axis L.
  • the connecting element is a dip tube whose upper end is connected to a flexible conduit 52 supplying the tube with concrete or grout.
  • the first rotation device 28 includes a motor 51 for rotating the hollow core 32. Furthermore , a rotary joint 60 provides the connection through the plate 42 between the upper end of the connecting element 36 and the flexible hose 52. It is understood that the cylinders 44 allow the axial position of the connecting element 36 relative to the hollow core 32 to be changed.
  • the vertical displacement cable 26 of the drill head 29 or its drive motor, is associated with a linear displacement sensor 62 that measures the vertical displacement of the drilling device. This displacement sensor constitutes a device for measuring the depth H reached by the drilling device.
  • FIG. 3 illustrates the lower end 30b of the drilling system 30 according to a first embodiment of the invention.
  • the connecting element 36 and the hollow core 32 can be rotationally coupled, for example by a dog clutch system, so that the pilot device 40 and the drilling device 30 rotate together in the same direction, without relative rotational movement between the connecting element 36 and the core. hollow 32.
  • the pilot device 40 can be rotated , by the second rotation device 50, in a direction of rotation opposite to the direction of rotation of the hollow core 32.
  • the second rotation device 50 is also capable of blocking the rotation of the connecting element 36 relative to the ground S.
  • FIG. 4A and 4B A second embodiment of the drilling system according to the invention has been illustrated.
  • This second embodiment differs from the first in that the drilling device 30' includes a coupling device 70, in this example a dog clutch, to lock the rotation of the pilot device 40' relative to the hollow core 32'.
  • the pilot device 40' is movable in translation relative to the hollow core 32' along the longitudinal axis L.
  • the drilling system 10', the jacks 44 , and the plate 42 constitute a displacement device 43 for moving the pilot device 40' in translation relative to the hollow core 32' along the longitudinal axis L, so that the pilot device 40' is in a deployed position, illustrated in figure 4B , and a retracted position illustrated in figure 4A .
  • the pilot device 40' when the cylinders 44 are in the deployed position, the pilot device 40' is in the retracted position, while when the cylinders 44 are in the retracted position, the pilot device 40' is in the deployed position.
  • the displacement device 43 is also configured to move the pilot device 40' relative to the pilot device 32' by jacking, driving or vibrating.
  • the displacement device 43 could also be equipped with a vibrating head not shown here.
  • the connecting element comprises a dip tube, which has injection holes 65 on its lower part.
  • injection holes 65 are concealed by the hollow core 32' when the pilot device 40' is in the retracted position.
  • the injection holes 65 are also concealed by the hollow core when the pilot device is in the deployed position.
  • the pilot device can also be in an injection or concreting position, as illustrated in figure 4C in which the pilot device is further deployed so that the injection holes are exposed to allow concreting. To do this, the pilot device is moved downwards using the displacement device 43, so that the injection hole 65 is located below the lower end 32'b of the hollow core 32'. In this position, concrete is injected into the borehole, for example when raising the drilling device 30.
  • the main focus is on controlling the drilling trajectory of the drilling device.
  • the pilot device 40' has a cylindrical shape comprising a first end 40'a with a portion for attaching to the connecting element 36, and a second end portion 40'b, opposite the first end portion 40'a.
  • the second end portion 40'b has a front face with cutting teeth D that form bulges.
  • the pilot device 40' also has a face P that is inclined with respect to a plane passing through the axis A of the pilot device 40' .
  • the angle of inclination between the face P and the axis A of the pilot device 40' is referenced ⁇ on the figure 14
  • the pilot device 40' also includes projecting squares C which are part of the dog clutch system 70 described above . In this embodiment, the angle ⁇ preferably has a value between 15° and 25°.
  • the pilot device 40 according to the first embodiment has a shape similar to that of the pilot device 40' according to the second embodiment. It differs from it in particular by the fact that it lacks C squares.
  • the drilling system includes a device 80 for measuring the deviation of the hollow core 32, 32' to identify any deviation between the drilling rig's travel path and the theoretical drilling path.
  • the theoretical drilling path is a vertical path, while the drilling rig's travel path is its actual path.
  • the hollow core deviation measurement device 80 also includes a deviation sensor 82 which is located in the lower part of the hollow core.
  • the deviation measurement device 80 is also configured to determine a possible deviation direction DD of the drilling device relative to the theoretical drilling trajectory, the deviation direction being considered in a horizontal plane Q which is defined by the XY frame.
  • the pilot device 40,40' has an active state in which the pilot device 40,40' is oriented and held relative to the ground, preferably being locked in rotation relative to said ground S, in a correction angular position so as to correct the direction of movement T of the drilling device 30,30' according to a trajectory correction direction DCT considered in the horizontal plane Q.
  • the angular orientation and locking in rotation relative to the ground of the pilot device 40,40' are operated by the second rotation device 50.
  • the trajectory correction direction DCT corresponds to the intersection between the inclined panel P and a plane P' which is vertical and perpendicular to panel P. As explained above, we are interested in the projection into the horizontal plane Q of this trajectory correction direction.
  • the conformation of the pilot device 40' (as well as for the pilot device 40) has the effect that, in its active state, the pilot device 40' tends, when embedded in the ground S, to move in translation according to the trajectory correction DCT illustrated on the figure 4B This has the effect of changing the orientation of the connecting element and the hollow core. It is also understood that , depending on the angular position of the correction, considered in on a horizontal plane, it is possible to modify the DCT trajectory correction direction.
  • pilot device When said pilot device is in its passive state, it is configured to rotate in the same direction and at the same speed as the hollow core, as previously mentioned, so that it does not alter the travel path of the drilling device.
  • the second rotation device is configured to rotate the pilot device 40, 40' in the opposite direction to the direction of rotation of the hollow core 32'.
  • the pilot device 40, 40' during the use of the drilling device does not modify the trajectory of movement of the hollow core, which is why the pilot device is said to be in its passive state.
  • the pilot device 40, 40' is brought into its active state by locking its relative rotation with respect to the ground after being oriented, by the action of the second rotation device, into the angular position enabling the desired trajectory correction direction.
  • the connecting element and the hollow core pivot in a vertical plane passing through the trajectory correction direction DCT, which has the effect of bringing the longitudinal axis L of the hollow core 32, 32' back into the theoretical drilling trajectory V.
  • the drilling system 10, 10' further includes a control device 100 which is configured to actuate the second rotation device 50 when a deviation is measured by the device 80, in order to bring the pilot device 40, 40' into its active state by locking it in rotation relative to the ground in a determined angular correction position such that, considered in the horizontal plane Q, the trajectory correction direction DCT associated with the angular correction position is opposite to the direction of deviation.
  • a control device 100 which is configured to actuate the second rotation device 50 when a deviation is measured by the device 80, in order to bring the pilot device 40, 40' into its active state by locking it in rotation relative to the ground in a determined angular correction position such that, considered in the horizontal plane Q, the trajectory correction direction DCT associated with the angular correction position is opposite to the direction of deviation.
  • control device 100 is configured to bring the pilot device into its active state by actuating the first rotation device after actuating the coupling device 70.
  • the control device 100 further includes a calculation device 102 for calculating the correction angular position based on the deviation direction DD determined by the measuring device.
  • the correction angular position is determined such that the trajectory correction direction DCT is opposite to the deviation direction.
  • the control device drives the second rotation device to bring the pilot device into the desired correction angular position.
  • the deflection sensor 82 is configured to measure a distance d of deviation of the hollow core 32, 32' from a vertical direction. This distance is considered in a horizontal plane passing through the deflection sensor. Furthermore, the control device is configured to activate the second rotation device when the ratio of the deflection distance d to the depth H reached by the drilling rig is greater than or equal to a threshold that may depend on the depth reached. For example, this threshold may be 0.3%.
  • the drilling rig 30 is illustrated .
  • the longitudinal axis L of the hollow core is parallel to the theoretical drilling direction V, therefore both are vertical.
  • the pilot device 40 is in its passive state and is rotated by the second rotation device 50 in the opposite direction to the rotation of the hollow core 32.
  • the drilling device 10 is therefore introduced into the ground while rotating the hollow core 32.
  • the possible deviation of the hollow core 32 is measured using the hollow core deviation measuring device 80 in order to determine a deviation direction DD of the drilling device relative to the theoretical drilling trajectory V.
  • the pilot device 40 is located in the center of the XY coordinate system illustrated in figure 5B .
  • a deviation illustrated by a deviation distance d, is measured.
  • This deviation distance d measured at a depth H, for example 5 m, being greater than a predetermined threshold, for example 2 cm, or 0.4%, the control device pilots the second rotation device so as to bring the pilot device 40 into its active state by orienting it and then locking it in rotation relative to the ground S in a specific angular correction position such that, considered in the horizontal plane Q, the trajectory correction direction DCT associated with the angular correction position is opposite to the deviation direction DD.
  • a predetermined threshold for example 2 cm, or 0.4%
  • threshold values may be chosen by a person skilled in the art depending on the desired drilling accuracy.
  • the deviation direction DD and the trajectory correction direction DCT extend along the X axis. However , these two directions could be non-parallel.
  • the operating principle is identical.
  • the pilot device is activated by orienting and locking it relative to the ground, so that the trajectory correction direction is opposite to the detected deviation direction.
  • the trajectory correction direction (DCT) is determined to correct the verticality of the hollow core during the drilling rig's penetration into the ground.
  • This second implementation method differs from the first in that, when a deviation exceeding a predetermined threshold is measured, the pilot device 40' is brought into its active state and deployed position, as illustrated in figure 11 , for example by translation and vibratory driving. Then, the hollow core is moved relative to the ground so that its displacement follows the displacement of the pilot device, thereby correcting the verticality of the hollow core's trajectory, as illustrated in figure 12 .
  • the well drilling processes according to the first and second modes of implementation can advantageously be used in the context of a column manufacturing process, such as a pile, a process in which a fluid is injected into the well at the time of the ascent of the drilling device in order to form the column in the ground.
  • a column manufacturing process such as a pile
  • Curve GX illustrates the deviation along the X axis
  • curve GY illustrates the deviation along the Y axis
  • curve GT illustrates the total deviation of the drilling rig.
  • the pilot device remains in its passive state down to a depth of approximately 8 meters, after which it becomes active down to a depth of approximately 12 meters, where it returns to its passive state. Therefore, the maximum deviation distance is approximately 3 cm for a depth between 8 and 10 meters. In other words, during the drilling operation, the deviation, expressed as a percentage, is at most 0.375%, and thus less than the critical limit of 0.5%.

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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)
  • Physics & Mathematics (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Fluid Mechanics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Structural Engineering (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Geophysics (AREA)
  • Earth Drilling (AREA)
  • Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)

Claims (16)

  1. Bohrsystem (10) eines Schachts in einem Boden (S) gemäß einem theoretischen, im Wesentlichen vertikalen Bohrpfad, umfassend:
    eine Bohrvorrichtung (30), umfassend einen hohlen Kern (32, 32'), der eine Längsachse (L) aufweist, wobei der hohle Kern mit einem Bohrwerkzeug (33) versehen ist;
    eine erste Drehvorrichtung (28), um den hohlen Kern (32, 32') und das Bohrwerkzeug (33) um die Längsachse in Drehung zu versetzen;
    ein Verbindungselement (36), das sich im Innern des hohlen Kerns erstreckt, das Verbindungselement umfassend ein Tauchrohr, das einen unteren Abschnitt aufweist, der mit mindestens einem Einspritzloch (65) versehen ist, wobei das Tauchrohr mit einer Fluidversorgungsquelle (52) verbunden ist;
    dadurch gekennzeichnet, dass es Folgendes umfasst:
    eine Leitvorrichtung (40, 40'), die an dem unteren Ende des Verbindungselements angeordnet ist und eine Schräge (P) umfasst, die in Bezug auf eine Achse (X) der Leitvorrichtung (40') geneigt ist;
    wobei die Leitvorrichtung Folgendes aufweist:
    einen aktiven Zustand, in dem die Leitvorrichtung in Bezug auf den Boden (S) in einer Korrekturwinkelposition ausgerichtet und gehalten wird, um den Bewegungspfad (T) der Bohrvorrichtung (30, 30') entlang einer Pfadkorrekturrichtung (DCT), betrachtet in einer horizontalen Ebene, zu korrigieren, wobei die Korrekturrichtung des Pfads die Richtung ist, die dem Schnittpunkt zwischen der geneigten Schräge und einer vertikalen Ebene orthogonal zu geneigten Schräge entspricht, und
    einen passiven Zustand, in dem die Leitvorrichtung den Bewegungspfad der Bohrvorrichtung nicht verändert;
    eine Vorrichtung (80) zum Messen einer Abweichung des hohlen Kerns (32, 32'), um eine mögliche Abweichung zwischen dem Bewegungspfad der Bohrvorrichtung und dem theoretischen, im Wesentlichen vertikalen Bohrpfad zu identifizieren und eine Abweichungsrichtung (DD) der Bohrvorrichtung in Bezug auf den theoretischen, im Wesentlichen vertikale Bohrpfad (V) zu bestimmen, wobei die Abweichungsrichtung in der horizontalen Ebene (Q) betrachtet wird;
    eine Steuervorrichtung, die konfiguriert ist, um, wenn eine Abweichung gemessen wird, die Leitvorrichtung in ihrem aktiven Zustand in eine Korrekturwinkelposition zu bringen, die derart bestimmt ist, dass, betrachtet in der horizontalen Ebene (Q), die Pfadkorrekturrichtung (DCT), die mit der Korrekturwinkelposition assoziiert ist, entgegengesetzt zu der Abweichungsrichtung ist.
  2. Bohrsystem nach Anspruch 1, dadurch gekennzeichnet, dass die Steuervorrichtung (100) ferner eine Rechenvorrichtung (102) zum Berechnen der Korrekturwinkelposition anhand der Abweichungsrichtung (DD), die von der Messvorrichtung (80) bestimmt wird, umfasst.
  3. Bohrsystem nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Leitvorrichtung (40, 40') konfiguriert ist, um in der gleichen Richtung und mit der gleichen Geschwindigkeit wie der hohle Kern (32, 32') zu drehen, wenn die Leitvorrichtung in dem passiven Zustand ist.
  4. Bohrsystem nach Anspruch 3, dadurch gekennzeichnet, dass die Bohrvorrichtung (30') eine Kopplungsvorrichtung (70) umfasst, um die Drehung der Leitvorrichtung (40') in Bezug auf den hohlen Kern (32') zu blockieren, wenn die Leitvorrichtung in dem passiven Zustand ist.
  5. Bohrsystem nach einem der vorherigen Ansprüche, dadurch gekennzeichnet, dass es ferner eine zweite Drehvorrichtung (50) umfasst, die mit dem Verbindungselement (36) verbunden ist, um das Verbindungselement und die Leitvorrichtung um die Längsachse (L) in Drehung zu versetzen, dass das Verbindungselement in der Lage ist, in Bezug auf den hohlen Kern zu drehen, und dass die Steuervorrichtung konfiguriert ist, um die zweite Drehvorrichtung zu betätigen, wenn eine Abweichung gemessen wird, um die Leitvorrichtung in ihren aktiven Zustand in der Korrekturwinkelposition zu bringen.
  6. Bohrsystem nach Anspruch 5, dadurch gekennzeichnet, dass die zweite Drehvorrichtung konfiguriert ist, um die Leitvorrichtung (40, 40') entgegen der Drehrichtung des hohlen Kerns zu drehen, wenn die Leitvorrichtung in einem passiven Zustand ist.
  7. Bohrsystem nach einem der vorherigen Ansprüche, dadurch gekennzeichnet, dass die Leitvorrichtung (40') in Bezug auf den hohlen Kern (32') translatorisch bewegbar ist, dass das Bohrsystem ferner eine Bewegungsvorrichtung (43) zum translatorischen Bewegen der Leitvorrichtung (40') in Bezug auf den hohlen Kern (32') entlang der Längsachse (L) umfasst, sodass die Leitvorrichtung (40') eine ausgefahrene Position und eine eingefahrene Position aufweist.
  8. Bohrsystem nach Anspruch 7, wobei die Bewegungsvorrichtung (43) konfiguriert ist, um die Leitvorrichtung (40') in Bezug auf den hohlen Kern (32') durch Heben, Rammen oder Rütteln zu bewegen.
  9. Bohrsystem nach Anspruch 7 oder 8, dadurch gekennzeichnet, dass die Leitvorrichtung in ihrem aktiven Zustand in der ausgefahrenen Position ist, während die Leitvorrichtung in ihrem passiven Zustand in der eingefahrenen Position ist.
  10. Bohrsystem nach einem der Ansprüche 7 bis 9, dadurch gekennzeichnet, dass die Leitvorrichtung zusätzlich eine Injektionsposition aufweist, in der sich das Einspritzloch (65) unterhalb des unteren Endes des hohlen Kerns befindet.
  11. Bohrsystem nach einem der vorherigen Ansprüche, dadurch gekennzeichnet, dass die Vorrichtung (85) zum Messen der Abweichung des hohlen Kerns einen Neigungssensor (82) umfasst, der in dem unteren Abschnitt des hohlen Kerns angeordnet ist.
  12. Bohrsystem nach einem der vorherigen Ansprüche, dadurch gekennzeichnet, dass es ferner ein Messorgan der Tiefe umfasst, die von der Bohrvorrichtung (30, 30') erreicht wird, dass die Messvorrichtung der Abweichung des hohlen Kerns konfiguriert ist, um eine Abweichungsstrecke (d) des hohlen Kerns in Bezug auf eine vertikale Richtung zu messen, und dass die Steuervorrichtung konfiguriert ist, um die Leitvorrichtung in ihren aktiven Zustand zu bringen, wenn das Verhältnis der Ablenkungsstrecke (d) zu der von der Bohrvorrichtung erreichten Tiefe (H) größer als oder gleich wie ein vorbestimmter Schwellenwert ist.
  13. Bohrsystem nach einem der vorherigen Ansprüche, dadurch gekennzeichnet, dass die Bohrvorrichtung (30, 30') ein Erdbohrer ist.
  14. Verfahren zum Bohren eines Schachts in einen Boden (S) entlang eines theoretischen Bohrpfads (V), dadurch gekennzeichnet, dass:
    ein Bohrsystem (40) nach einem der vorherigen Ansprüche bereitgestellt wird;
    die Bohrvorrichtung in den Boden (S) einführt wird, während der hohle Kern (32) in Drehung versetzt wird, wobei die Leitvorrichtung in ihrem passiven Zustand ist;
    die Abweichung des hohlen Kerns gemessen wird, um eine Richtung der Abweichung der Bohrvorrichtung von dem theoretischen Bohrpfad zu bestimmen;
    wenn eine Abweichung größer als ein vorbestimmter Schwellenwert gemessen wird, die Leitvorrichtung (40, 40') in ihren aktiven Zustand gebracht wird, indem sie ausgerichtet und dann in Bezug auf den Boden (S) in einer bestimmten Korrekturwinkelposition gehalten wird, sodass, betrachtet in einer horizontalen Ebene (Q), die mit der Korrekturwinkelposition assoziierte Pfadkorrekturrichtung (DCT) der Abweichungsrichtung (DD) entgegengesetzt ist.
  15. Bohrverfahren nach Anspruch 14, wobei ein Bohrsystem (10') nach Anspruch 7 bereitgestellt wird, wobei bei dem Verfahren, wenn eine Abweichung gemessen wird:
    die Leitvorrichtung (40') in ihren aktiven Zustand gebracht wird, indem die Leitvorrichtung in Bezug auf den Boden in einer bestimmten Korrekturwinkelposition ausgerichtet und gehalten wird, so dass, betrachtet in einer horizontalen Ebene, die mit der Korrekturwinkelposition assoziierte Pfadkorrekturrichtung (DCT) der Abweichungsrichtung (DD) entgegengesetzt ist;
    die Leitvorrichtung in ihre ausgefahrene Position gebracht wird;
    der hohle Kern in Bezug auf den Boden bewegt wird, sodass die Bewegung des hohlen Kerns der Bewegung der Leitvorrichtung folgt.
  16. Verfahren zur Herstellung einer Säule in dem Boden, wobei das Bohrverfahren nach den Ansprüchen 14 oder 15 durchgeführt wird, wobei bei Hochziehen der Bohrvorrichtung ein Fluid in den Schacht eingespritzt wird, um die Säule in dem Boden zu bilden.
EP18730798.8A 2017-06-30 2018-06-18 Vertikales bohrsystem vom schneckentyp mit trajektoriekorrekturvorrichtung Active EP3645823B1 (de)

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FR1756218A FR3068380B1 (fr) 2017-06-30 2017-06-30 Systeme de forage vertical de type tariere muni d'un dispositif de correction de trajectoire
PCT/EP2018/066108 WO2019002002A1 (fr) 2017-06-30 2018-06-18 Systeme de forage vertical de type tariere muni d'un dispositif de correction de trajectoire

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US11535999B2 (en) * 2019-05-20 2022-12-27 The Board Of Regents Of The University Of Oklahoma Helical piles with sensors and data acquisition unit
US20220235611A1 (en) * 2019-05-21 2022-07-28 Hy-Tech Drilling Ltd. Diamond Drilling Hole Correction Tool
CN111733813A (zh) * 2020-07-16 2020-10-02 湖南建工集团有限公司 一种一柱一桩人工与机械干作业组合成孔施工方法
CN111771855B (zh) * 2020-07-16 2022-04-26 珠海经济特区白蚁防治技术推广站 堤坝白蚁巢穴专用灌浆机
CN117231142B (zh) * 2023-11-10 2024-02-02 陕西中煤新能源有限公司 一种地热能源开发钻井地面平台

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WO2019002002A1 (fr) 2019-01-03
FR3068380B1 (fr) 2020-12-11
JP7203773B2 (ja) 2023-01-13
ES3062834T3 (en) 2026-04-14
JP2020525676A (ja) 2020-08-27
KR20200026260A (ko) 2020-03-10
US20200116006A1 (en) 2020-04-16

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