EP2381036A1 - Dispositif de forage - Google Patents

Dispositif de forage Download PDF

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Publication number
EP2381036A1
EP2381036A1 EP10004350A EP10004350A EP2381036A1 EP 2381036 A1 EP2381036 A1 EP 2381036A1 EP 10004350 A EP10004350 A EP 10004350A EP 10004350 A EP10004350 A EP 10004350A EP 2381036 A1 EP2381036 A1 EP 2381036A1
Authority
EP
European Patent Office
Prior art keywords
caisson
drill
arm
boring bar
drilling
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
EP10004350A
Other languages
German (de)
English (en)
Other versions
EP2381036B1 (fr
Inventor
Alexander J. Verstraeten
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.)
Beheersmaatschappij Verstraeten BV
Original Assignee
Beheersmaatschappij Verstraeten BV
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 Beheersmaatschappij Verstraeten BV filed Critical Beheersmaatschappij Verstraeten BV
Priority to EP20100004350 priority Critical patent/EP2381036B1/fr
Priority to DK10004350T priority patent/DK2381036T3/da
Publication of EP2381036A1 publication Critical patent/EP2381036A1/fr
Application granted granted Critical
Publication of EP2381036B1 publication Critical patent/EP2381036B1/fr
Not-in-force 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
    • 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
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D23/00—Caissons; Construction or placing of caissons

Definitions

  • the present invention relates to a drilling device for a caisson with expanding cross-section.
  • caissons whose cross-section expands, for example, from 7 m to 13 m, are used in the country but also especially in the sea for the establishment of wind turbines and oil rigs for the oil and gas industry.
  • the caissons used in this case with a cross section of about 8 to 15 m are often formed bottle-shaped, i. the upper end of the caisson has a small cross-section, whereas the lower end of the caisson, which is sunk in the ground, has a large cross-section, as it must provide a firm anchorage in the ground.
  • a rotatable drill rod is provided, at whose lower end portion at least one drill arm is articulated, at the end of a cutting head is attached.
  • the cutting head can be moved back and forth relative to a rotation axis of the boring bar with the aid of a control element which pivots the boring arm.
  • the entire drilling device can be introduced into a caisson through its reduced cross-section.
  • the drill arm can be pivoted so that it covers the entire inner cross section of the caisson when the drill rod is rotated.
  • the drilling device according to the invention is thus suitable for caissons with expanding cross section. However, it can also be used in the same way with caissons with a constant cross section, so that the device can be used flexibly.
  • At least two centering arms can be articulated to the drill rod, wherein the centering can be pivoted by means of an actuating element relative to the axis of rotation of the drill rod.
  • the drilling device i. Center the drill pipe, drill arms and attached cutting head in the center of the caisson after the cutting head is in its working position. Due to the pivotable design of the actuating elements, these do not hinder the insertion of the drilling device into the caisson. At the same time an adaptation to different cross-sections of the caissons is possible by the pivotable design of the centering.
  • the centering arms can be pivoted into a position in which they extend approximately at right angles to the boring bar.
  • the boring bar can be centered with a high force within the caisson.
  • At least one cross member may be rigidly secured to the boring bar to transmit torque from the boring bar to the boring arm at a location intermediate the cutting head and the boring bar.
  • the attachment of the drill arm to the drill rod stiffen, since the torque is then transmitted not only at the point of articulation of the drill arm but also between this point of articulation and the cutting head on the drill.
  • the cross member may extend approximately at right angles to the boring bar and may, for example, be designed as a double guide, so that the boring bar is supported for each direction of rotation by the crossbeam.
  • a particularly simple embodiment is two parallel and perpendicular to the boring bar extending rails between which the drill arm is arranged.
  • a sensor device can be provided for monitoring and automation of the drilling process, which detects the pivot angle of the drill arm. In this way, it can be reliably determined in which pivot position the drill arm is located.
  • the sensor device may be arranged on the cross member of the boring bar.
  • the drill arm is pivotable so that the cross member defines the maximum outer contour of the insertable into the caisson part of the drilling device.
  • the drill arm and the cross member is dimensioned and constructed so that when applied to the boring bar Bohrarm the largest clear width of the drilling device substantially through the cross member is determined. In this way the radial extent of the cross member is maximized and the torque transferable to the drill arm is optimized.
  • the drill rod is mounted vertically adjustable on a base which can be placed on the caisson.
  • a simple and reliable attachment of the drill rod is secured to the caisson.
  • the vertical adjustment of the drill rod can be done for example by adjusting cylinder, with which the drill rod can perform a lifting movement to bring the cutting head under force in the bottom of the hole.
  • a lower end of the boring bar is provided with an outlet opening for rinsing liquid, since in this way the area not reachable by the cutting head can be supplied in a simple manner with rinsing liquid.
  • this relates to a drilling method using a device of the type described above, wherein the drill rod is rotated about the axis of rotation and is pivoted after rotation by at least 180 ° of the drill arm.
  • the boring bar can continuously in a direction of rotation about the Rotation axis are rotated while the drill arm is continuously pivoted radially in and out.
  • the drilling device When using a drilling device of the type mentioned above in connection with a caisson with widening cross-section, the drilling device can be dimensioned so that when swiveled Bohrarm the drilling device is lowered through the smallest cross section of the caisson in this, the drill arm after insertion of the drilling device in the extended cross-sectional area from this position into a further position is pivotable, in which the cutting head is in the region of the inner circumferential surface of the caisson. As a result, the entire inner cross-sectional area of the caisson can be painted over with the cutting head.
  • the drill arm can be pivoted at the open bottom of the caisson into a position in which the cutting head projects radially beyond the inner contour of the caisson, while the drill pipe is located centrally in the caisson.
  • the cutting head can be pivoted so far radially outward that it is positioned below the wall of the caisson.
  • Fig. 1 shows a caisson 10 with a top-to-bottom flared cross section, wherein the caisson 10 has an upper cross-sectional area with a small cross section, a transition region with conically widening cross section and a lower end portion with a large cross section.
  • the inner cross section of the upper portion may be about 6 to 7 m and the cross section of the lower portion may be about 12 to 13 m.
  • the wall of the caisson 10 may be tapered in its lower end, so that the caisson 10 can easily bring into the bottom G.
  • the caisson 10 is rotationally symmetrical, ie its interior in the area with smaller and larger cross section is cylindrical.
  • a drilling device comprising a boring bar 12 which is rotatable by means of a rotary table 14.
  • the boring bar may be formed solid or as a hollow tube with a sufficiently high moment of resistance, wherein the boring bar can be composed of individual shots in both cases.
  • the drilling table 14, which is provided with a rotary drive for the drill rod 12, not shown, is movable by means of adjusting cylinders 16 in the vertical direction by a setting stroke, so that the lower end of the drill rod can be adjusted in height.
  • the actuating cylinder 16 are mounted on a base 18 which is placed on the upper opening of the caisson.
  • the two drill arms 22 and 24 are hinged to a sleeve 30 which is fixed to the drill rod 12.
  • Each drill arm 22 and 24 is reciprocable about its pivot point and relative to the axis of rotation R of the boring bar 12, ie, pivotable, for this purpose, in each case a hydraulic cylinder 32 and 34 is used.
  • Each hydraulic cylinder 32 and 34 is attached with its one end at the lower end of the drill rod 12 in the region of the drill bit 20 and with its respective other end approximately in the center of the associated Bohrarms 22 and 24.
  • each drill arm can thus be pivoted independently of the respective other drill arm, so that at the end of the drill arm arranged cutting head relative to the rotation axis R reciprocated.
  • the points of articulation of the hydraulic cylinders 32 and 34 on the boring bar are located approximately at the level of the cutting heads 26 and 28, so that in the in Fig. 1 illustrated position of the drill arms 22 and 24 of the hydraulic cylinders 32 and 34 and of the drill arms 22 and 24 a parallelogram is included.
  • the drill arms 22 and 24 can be applied to the drill rod 12 so that they extend approximately parallel or at only a very small acute angle to the central axis R of the drill rod 12.
  • the radial spacing of the cutting heads 26 and 28 located at the outermost end of the drill arms 22 and 24 is smaller than the small internal cross section of the caisson 10, so that the drilling apparatus can be inserted and removed through the upper opening of the caisson.
  • two cross members 36 are fixed to the drill rod 12, which extend at right angles to the axis of rotation R of the drill rod and parallel to each other.
  • the cross member 36 of which only one can be seen, are spaced so that between these the drill arms 22 and 24 can be pivoted.
  • the cross member 36 are attached approximately at the height of the articulation points of the hydraulic cylinders 32 and 34 on the drill arms 22 and 24, so that even with completely outwardly pivoted drill arms 22 and 24 still a guide is ensured by the cross member 36.
  • the drilling device has a sensor device with a plurality of position sensors 38, with which the pivot position of the drill arms 22 and 24 can be detected and forwarded to a control and monitoring control.
  • centering the boring bar 12 within the caisson 10 at least two, in the illustrated embodiment, three centering arms 40 are articulated to the boring bar 12, wherein the centering arms 40 by means of adjusting cylinders 42 relative to the axis of rotation R of the boring bar 12 can be pivoted.
  • the adjusting cylinders 42 are located axially above the centering and are articulated approximately in the middle of the centering of these.
  • a roller 44 is arranged, whose axis of rotation runs parallel to the axis of rotation R of the boring bar 12. During a rotation of the boring bar 12, the roller 44 thus rolls on the inner circumference of the caisson 10.
  • Fig. 1 illustrated centering position in which the centering arms 40 extend at right angles to the boring bar 12, these are pivotable by extending the actuating cylinder 42 and so far applied to the boring bar 12 that the drilling device can be switched on and executed by the tapered portion of the caisson 10.
  • the centering arms 40 and the drill arms 22 and 24 are offset from each other so that they do not interfere.
  • a floating pump 50 is provided with the help of a line 52 water can be pumped into the caisson 10.
  • a closable opening 54 may be provided to admit water into the caisson.
  • the water within the caisson serves as a supply for pumps 56 and 58, which are provided in the region of the cutting heads 26 and 28 and with their help cuttings, ie a mixture of soil constituents and water via hose lines 60 and 62, which are led out of the caisson 10 parallel to the drill rod, for example, is pumped into a gully on land.
  • flushing fluid can be introduced into the interior of the drill rod under pressure, which flushing liquid can then exit at the lower end of the drill rod 12 via outlet nozzles 64.
  • the caisson can be evenly lowered into the ground by its own weight and by drilling the interior of the caisson. In many applications, however, the reason is stratified and has various moor, loam or clay layers.
  • Fig. 2 shows a corresponding situation with a clay layer L, which is relatively hard, so that the caisson 10 does not lower by its own weight.
  • the drill arms are dimensioned so that they are pivotable at the open bottom of the caisson 10 in a position in which the cutting head (in Fig.
  • the cutting head 26 protrudes radially beyond the inner contour of the caisson 10, while the drill pipe 12 is located centrally in the caisson 10.
  • the cutting head can be moved under the wall of the caisson 10, so that there removes the substrate and the lowering of the caisson can be ensured.
  • the cutting head 26 cuts in the illustrated position of the Bohrarms 22 below the wall of the overlying caisson 10, the cutting head 26 can be brought into this position alone by pivoting the Bohrarms 22. At the same time a stabilization by the cross member 36 is present in this position.
  • a safety valve 33, 35 is provided, which is designed as a pressure relief valve.
  • the caisson 10 is deposited on the water bottom and the centering arms 40 and the drill arms 22 and 24 are applied to the boring bar 12.
  • the drilling device can be inserted through the tapered portion of the caisson in this and lower to the bottom of the water.
  • the actuating cylinder 42 can be actuated so that the centering arms 40 in the in Fig. 1 shown position to be moved, in which the boring bar 12 is centered in the center of the caisson 10.
  • the drill rod 12 can be rotated and the hydraulic cylinders 32 and 34 can be activated alternately or simultaneously so that the cutting heads 26 and 28 sweep the inner cross section of the caisson, thereby removing or drilling the ground.
  • the resulting cuttings can be pumped off with the aid of the pumps 56 and 58.
  • flushing liquid leaving through the nozzles 64 can ensure that the central region of the inner cross section is also flushed out.
  • Fig. 3 With the device according to the invention various drilling methods are possible. So how can in Fig. 3 illustrated, the boring bar 12 continuously in a rotational direction (in Fig. 3 clockwise) about the axis of rotation so that the cutting heads 26 and 28 rotate clockwise. Meanwhile, the drill arms 22 and 24 can be continuous be pivoted radially outwardly from the outside, so that they perform a spiral movement.
  • the direction of rotation of the drill rod 12 can be reversed after rotation through 180 °, with the direction of rotation, the drill arms 22 and 24 are slightly pivoted.
  • Fig. 4 illustrates this procedure, with first the cutting heads 26 and 28 are pivoted radially outward completely. After a first half turn by 180 ° clockwise, the drill arms can then be pivoted slightly inwards, for example by 80 cm. If then the boring bar 12 is rotated in the reverse direction of rotation, a further inner ring of the inner cross section of the caisson 10 is painted over. After the entire inner contour has been drilled out, the boring bar 21 can be further lowered by means of the adjusting cylinder 16, wherein this can also take place during rotation of the boring bar 12. In this way, the ground within the caisson 10 can be easily bored out without the need for seals, cable couplings and the like which allow 360 ° rotation.
  • an automatic control can be provided with which the drilling progress and the respective position of the drilling arms 22 and 24 can be monitored by means of the sensor elements 38.

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • General Engineering & Computer Science (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • Paleontology (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Earth Drilling (AREA)
EP20100004350 2010-04-23 2010-04-23 Dispositif de forage Not-in-force EP2381036B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP20100004350 EP2381036B1 (fr) 2010-04-23 2010-04-23 Dispositif de forage
DK10004350T DK2381036T3 (da) 2010-04-23 2010-04-23 Boreanordning

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20100004350 EP2381036B1 (fr) 2010-04-23 2010-04-23 Dispositif de forage

Publications (2)

Publication Number Publication Date
EP2381036A1 true EP2381036A1 (fr) 2011-10-26
EP2381036B1 EP2381036B1 (fr) 2013-06-19

Family

ID=42537763

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20100004350 Not-in-force EP2381036B1 (fr) 2010-04-23 2010-04-23 Dispositif de forage

Country Status (2)

Country Link
EP (1) EP2381036B1 (fr)
DK (1) DK2381036T3 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013110148A1 (fr) * 2012-01-23 2013-08-01 Teixeira Wilson Roberto Dispositif d'élargissement de base d'espaces tubulaires

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2374504A1 (fr) * 1976-12-18 1978-07-13 Gewerk Eisenhuette Westfalia Dispositif pour l'elargissement de puits ou de cavites analogues
JPH02125022A (ja) * 1988-09-28 1990-05-14 Shiraishi:Kk ケーソン用掘削機
DE4028596A1 (de) * 1990-09-08 1992-03-12 Westfalia Becorit Ind Tech Schachtabteufverfahren und einrichtung zu dessen durchfuehrung
DE4214410A1 (de) * 1992-05-05 1993-11-11 Bergwerksverband Gmbh Maschinenaggregat für die Querschnittserweiterung von vertikalen Grubenbauen
JP2002004296A (ja) * 2000-06-19 2002-01-09 Takenaka Doboku Co Ltd オープンケーソンの拡径刃口部掘削用ケレン装置

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2374504A1 (fr) * 1976-12-18 1978-07-13 Gewerk Eisenhuette Westfalia Dispositif pour l'elargissement de puits ou de cavites analogues
JPH02125022A (ja) * 1988-09-28 1990-05-14 Shiraishi:Kk ケーソン用掘削機
DE4028596A1 (de) * 1990-09-08 1992-03-12 Westfalia Becorit Ind Tech Schachtabteufverfahren und einrichtung zu dessen durchfuehrung
DE4214410A1 (de) * 1992-05-05 1993-11-11 Bergwerksverband Gmbh Maschinenaggregat für die Querschnittserweiterung von vertikalen Grubenbauen
JP2002004296A (ja) * 2000-06-19 2002-01-09 Takenaka Doboku Co Ltd オープンケーソンの拡径刃口部掘削用ケレン装置

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013110148A1 (fr) * 2012-01-23 2013-08-01 Teixeira Wilson Roberto Dispositif d'élargissement de base d'espaces tubulaires

Also Published As

Publication number Publication date
EP2381036B1 (fr) 2013-06-19
DK2381036T3 (da) 2013-07-01

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