EP2539531A2 - Procédé et dispositif de forage - Google Patents

Procédé et dispositif de forage

Info

Publication number
EP2539531A2
EP2539531A2 EP11726684A EP11726684A EP2539531A2 EP 2539531 A2 EP2539531 A2 EP 2539531A2 EP 11726684 A EP11726684 A EP 11726684A EP 11726684 A EP11726684 A EP 11726684A EP 2539531 A2 EP2539531 A2 EP 2539531A2
Authority
EP
European Patent Office
Prior art keywords
drill head
drill
drill string
length
head
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.)
Withdrawn
Application number
EP11726684A
Other languages
German (de)
English (en)
Inventor
Rüdiger KÖGLER
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.)
Plum Heinz
Original Assignee
Plum Heinz
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 Plum Heinz filed Critical Plum Heinz
Publication of EP2539531A2 publication Critical patent/EP2539531A2/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C21/00—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00
    • G01C21/20—Instruments for performing navigational calculations
    • 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
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B7/00—Special methods or apparatus for drilling
    • E21B7/04—Directional drilling
    • E21B7/046—Directional drilling horizontal drilling

Definitions

  • the invention relates to a method for directional drilling in which a drill head with subsequent drill string is driven through soil or rock, and a device for directional drilling in soil or rock, comprising a controllable drill head.
  • GMS Magnetic Steering System
  • This system uses the length drilled at the time of measurement, the direction (azimuth) and inclination (inclination) to determine the position of the drill bit in the ground.
  • a three-dimensional traverse can be calculated and displayed from the starting point to the current measuring point, with the azimuth values for the horizontal position and the
  • the major disadvantage of the described azimuth measurement consists in the fact that the magnetic field lines are distorted in interference fields and the magnetometers thereby often give incorrect or inaccurate values.
  • the inclinometers are completely unaffected by magnetic influences, which is why the accuracy of the vertical position determination is usually much higher than that of the horizontal position.
  • a method and a device of the type mentioned are from the
  • an optical lane is formed, which is the entire drill string of a usually in a starting pit
  • Driving machine passes through into the drill head into it.
  • the measurement technology is complex and also expands the field due to the optical lane.
  • gyro compasses are used to determine the optical lane
  • a gyro compass may be used for certain drilling procedures, e.g. when using a rotary hammer, be too sensitive.
  • a device and a method for controlling the position of a self-propelled drilling tool are known in which a rotating magnet is provided on the drill head.
  • the time-varying magnetic field is detected on the earth's surface by means of a detector device.
  • the height position and the lateral position of the drill head can be determined.
  • the position information can be used to control the drill head.
  • a position determination of a drill head by means of magnetic fields is technically complex and also prone to magnetic interference fields.
  • the HDD method Horizontal Directional Drilling
  • Drill head is arranged.
  • the location of the drill head is effected by means of a receiver located on the earth's surface. This causes an increasing inaccuracy with increasing depth of the bore.
  • Bohrstrangwandung for example, from right and left fighters and / or the vertex and bottom of the drill string, a curvature of the drill string and from it the spatial position of the drill head can be determined. From this, specifications for the control of the drill head can be determined.
  • the position and spatial position and thus the current direction of advance of the drill head can by means of the aforementioned measuring methods, eg iteratively, with high accuracy.
  • the measurement is also completely independent of interference fields of all kinds, especially of magnetic interference fields.
  • a boring head suitable for the inventive method as well as for the inventive device is known from EP 1 621 722 A2, in which an outer steering tube, e.g. can be brought by means of bellows body with respect to an inner guide tube in angular position.
  • an outer steering tube e.g. can be brought by means of bellows body with respect to an inner guide tube in angular position.
  • other drill head constructions may be suitable.
  • the determination of the length changes can advantageously be effected by means of at least two tape measures, which are guided along the drill string in different areas of its wall and substantially parallel to its central longitudinal axis.
  • the drill string is thus curved.
  • Such changes in length come z. B. by compression, elastic strains or inserted tubes through
  • the measuring tapes can be guided along the fighters of a drill string driven into the earth or the rock.
  • the fighters are the ones in
  • Propulsion direction right and left walls of the tube, while the top wall vertices and the bottom wall are referred to as the sole. If the drill string curves to the right or left, the lengths of the fighters change differently. The length of the inner fighter shortens, z. B. due to a compression of the material, while the length of the outer fighter, z. B. by elastic stretching of the material or angulation of the tubes is increased. From the difference of the lengths and the known diameter of the drill string can be the curvature and thus determine the current direction of the drill head and calculate from this the position of the drill head in the plane of the fighters.
  • a curvature in the plane perpendicular to the fighters can be determined by means of two measuring tapes, which are guided over vertex and sole of the drill string. Due to the reading accuracy in the mm range, a correspondingly high accuracy in the determination of the position of the drill head can be achieved.
  • curvatures can be determined in all directions.
  • the method according to the invention can be used for any bore directions from horizontal to vertical and for a wide variety of bore types.
  • the method is also suitable for the trenchless laying of pipes, e.g. of supply or sewer pipes.
  • the inventive method is very insensitive and is particularly suitable for drilling using a Imlochhammers whose percussion piston generates considerable shocks. Since no measurement technique has to be used within the entire drill string, the entire space can there be otherwise, e.g. in the drill string, in particular for ground transportation, e.g. by means of a screw, and be used in the tunneling machine for the machine technology. In addition, curved holes can be made with this measurement technique other than when using the optical path.
  • the values obtained by the measuring tape can be stored in a control unit for the
  • Drilling head automatically read or entered by a person.
  • the control unit can also directly on the basis of
  • a drill string is usually composed of several drill string shots, for example pipe shots.
  • the drill string shots and the drill head can be used to protect and also accurately guide the tape measure with a tape sleeve be provided.
  • the reading of the measuring tapes can also be automated by persons or with suitable reading devices, z. B. digital, done.
  • the inventive method can also be carried out with alternative measuring systems, in particular can be provided for the
  • inventive method at least one inclinometer, i. use a tilt sensor, or an alternative sensor and the length changes by means of suitable band-shaped transmission means on the inclinometer or the
  • Drill head sleeves can be attached to the tubular body of the drill head, in which the ropes are arranged and guided as possible with little friction.
  • the sleeves are guided at one end of the pipe in at least one arc into the tube interior, wherein a small area remains free between the two sleeves in the middle.
  • the ropes in the sleeves are connected in the free area between the two sleeves with a rocker mounted on the drill head, on which in turn at least one inclinometer is mounted. If the drill head is now e.g. subjected to a horizontal curvature, the rocker is changed in its inclination by the movement of the cables, depending on the orientation of the curvature to the left or right.
  • the mounted on the rocker inclinometer is thereby also inclined, and the change in the angle of inclination can be converted into the corresponding change in length of the fighters.
  • the original length of the fighters the curvature of the pipe section.
  • a corresponding device can be mounted for the analog determination of vertical curvatures in the vertical direction. Together with the drilled length can now with the known calculation method, the spatial position of the drill head in the ground to be determined.
  • a possible in practice rolling of the drill head can over another
  • Inclinometer be established, which is firmly connected to the pipe wall and thus directly measures the torsions of the pipe.
  • the proportion of horizontal and vertical curvature can then be determined from the two above-described calculation methods and then the absolutely resulting horizontal and vertical position of the drill head can be calculated.
  • the change in length of the two fighters i.e., the movement of the ropes in the sleeves
  • the change in length of the two fighters may also be made directly via available displacement transducers in the industry (e.g., linear transducers or pull-tab transducers).
  • the determination of the roll is carried out in this case continue at least one attached to the drill head
  • FIG. 1 shows schematically the essential areas of a straight boring head
  • FIG. 2 shows schematically the essential areas of a curved boring head
  • Fig. 6 shows schematically the use of displacement sensors.
  • FIG. 7 shows a side view of a drill string emanating from a starting pit
  • Fig. 1 1 in an oblique side view of a pipe end with tape measure.
  • FIGS. 1 to 6 show a first exemplary embodiment of the method according to the invention and the device according to the invention.
  • Fig. 1 shows a straight drill head 1 in side view, top view and in section, in which the relevant areas for the present invention vertex 2, fighters 3 and 4 sole
  • the length L 0 denotes the length of the tubular body of the drill head 1 in the axial direction, the diameter D the personally micer of the drill head. 1
  • FIG. 2 shows, by way of example, a drill head 1 curved in a plane in a side view, top view and section, in which the areas apex 2, fighter 3 and sole 4 relevant for the present invention have again been designated.
  • the length L 0 again denotes the length of the tubular body in the axial direction (which corresponds to that of the straight tubular body).
  • FIG. 3 two rockers 10 are shown in detail, one for the horizontal plane and one for the vertical plane. Shown are each sleeves 12 with therein ropes 13. The fixedly attached to the drill head 1 sleeves 12 are connected to each other via a rocker bearing 8. At this rocker bearing 8 each rocker arm 9 is rotatably mounted in the pivot point 1 1. On the rocker bearing 8 there is an inclinometer 7 (or 17) responsible for measuring the roll, while an inclinometer 6 (or 16) fastened on the rocker arm 9 measures the horizontal (or vertical) angle change.
  • the ropes 13 are connected by means of a cable attachment 14 with each other and with the rocker arm 9.
  • a possible embodiment for a screw 18 for adjusting the position of the rocker arm 9 is shown by way of example.
  • the sleeves 12 are provided at one end with a thread 19 in which an adjusting screw 18 can be moved, to which in turn the rope in question 13 is attached.
  • the cable 13 can be moved axially in the sleeve 12.
  • the cable attachment 14 is moved to the rocker arm 9 and accordingly deflected the rocker arm on the pivot point 1 1 and thus in turn can the inclinometer 6 (or 16) are adjusted.
  • Fig. 5 the usable devices in a straight drill head 1 and in a one-dimensional (in the example horizontally) curved drill head 1 are shown.
  • Movement is transmitted to the rocker 10 and the inclinometer 6 located thereon.
  • FIG. 6 shows the principle use of displacement transducers 15 instead of inclinometers 6 and 7 for determining the changes in length of vertex 2, fighter 3 and sole 4.
  • a transducer 15 for determining the Length change of vertex 2, fighter 3 and sole 4 is provided.
  • the connection of the cables 13 with the displacement sensors 15 can in turn be carried out by a respective cable attachment 14.
  • the adjustment of the displacement transducer 15 can be carried out analogously to that in the use of inclinometers 6 and 7 via screws 18.
  • a calibration of the two inclinometers 6 and 16 is carried out before the start of drilling by initially aligning the straight drill head 1 exactly in the drilling direction and exactly (similar to the calibration procedure in the case of the MGS). Then the drill head 1 is rotated about its axis so far that the intended vertex. 2
  • the bending radii R 0 move in practice eg steel pipes with a
  • the length of the left-hand fighter L L in this example is 3002.5 mm and that of the right-hand fighter L R is 2997.5 mm.
  • the rocker 10 would be deflected by the amount of 2.5 mm.
  • this curvature would thus trigger an angular change of the inclinometer 6 of about 5.7 °.
  • a sensitivity of the commercially available inclinometer ⁇ 0.1 ° this is a very strong signal.
  • a radius of curvature Ro 1 .000 m, the length of the left fighter L L would extend to 3000.75 mm and that of the right fighter L R to 2999.25 mm.
  • the rocker 10 would be deflected in this example by the amount of 0.75 mm. Again, assuming that the partial lengths of the rocker arm 9 are on both sides of the fulcrum 1 1 each 25 mm long, this curvature would thus trigger an angular change of the inclinometer 6 of about 1, 7 °.
  • the maximum possible bending radius Ro still recognizable by such a device is approximately 17,189 m.
  • the accuracy of commercial odometer is approximately in the range of 0.1 mm and thus allows these devices similar applications as the inclinometers.
  • the drill head can also have a measurement space delimited by a double wall, in which the inclinometers or displacement meters are arranged in a suitable manner and into which the cables are guided. Through a separate measuring room, the remaining
  • Interior of the drill head are used elsewhere, for. B. for a screw to transport soil.
  • FIGS. 7 to 11 now show a further exemplary embodiment of the invention
  • FIG. 7 schematically shows, in a lateral view, a tunneling machine 21 in a starting pit 22, from where a controllable boring head 26 with a drill string 23 is driven horizontally into soil 24.
  • the drill string 23 consists of several pipe sections 25.
  • Fig. 8 shows in plan view the drill head 26 and partly the subsequent
  • Pipe sections 25 each with a curvature, as they could result during the propulsion, for example, within a horizontal plane.
  • the curvature is exaggeratedly shown in FIG.
  • the right fighter 29 seen in the forward drive direction forms the outer fighter of the bend and the left fighter 30 the inner fighter.
  • the tape measures run along the fighters 29 and 30 in mounted on the pipe sections 25 protective sleeves 31 and 32nd
  • Fig. 9 shows a pipe section 25 with protective sleeves 31 and 32 in cross section.
  • Fig. 1 1 is a pipe section 25 with protective sleeve 31 and inserted tape measure 33 can be seen.
  • a coupling piece 34 At the end of the pipe is a coupling piece 34, over which a subsequent pipe section 25 is pushed.
  • the tape measure 33 is in the
  • the measuring tape 33 can then be read, for example, in the starting pit 22. The reading takes place on both sides of the pipe string on both sides and precisely in a plane perpendicular to the desired direction of advance. This measurement level can
  • Tape measures are entered automatically or through operating personnel into a control unit 28 ( Figure 7). If necessary, the direction of further advancement via the control unit 28 is automatically corrected.
  • FIG. 10 shows in cross-section a tube weft 36 with three protective sleeves 37, 38 and 39 distributed over the circumference of the tube section 36.
  • three in these Protective sleeves 37 to 39 extending may be determined any arbitrary direction of curvature and the curvature can be quantified.

Landscapes

  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Physics & Mathematics (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Geophysics (AREA)
  • Mechanical Engineering (AREA)
  • Automation & Control Theory (AREA)
  • General Physics & Mathematics (AREA)
  • Earth Drilling (AREA)
  • Excavating Of Shafts Or Tunnels (AREA)

Abstract

L'invention concerne un procédé de forage à commande directionnelle, selon lequel un trépan (1, 26) prolongé par un train de tiges (23) est enfoncé dans le sol ou la roche, des variations en longueur de différentes zones de la paroi de trépan et/ou de la paroi de train de tiges étant dues à une incurvation du trépan (1, 26) et/ou du train de tiges (23). Les variations en longueur observées permettent une commande directionnelle du trépan (1, 26). La variation en longueur peut être mesurée à l'aide d'au moins deux mètres rubans (33) qui s'étendent du trépan (1, 26) jusqu'à un point de mesure situé dans la zone d'un point de départ du forage, notamment d'une fouille de départ (22), en longeant le train de tiges (23), par exemple, dans des gaines protectrices (31, 32, 37, 38, 39) disposées sur le train de tiges (23)..
EP11726684A 2010-02-22 2011-02-11 Procédé et dispositif de forage Withdrawn EP2539531A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE201010008823 DE102010008823B4 (de) 2010-02-22 2010-02-22 Verfahren und Vorrichtungen zur Vermessung der räumlichen Lage eines Bohrkopfs
PCT/DE2011/075021 WO2011100966A2 (fr) 2010-02-22 2011-02-11 Procédé et dispositif de forage

Publications (1)

Publication Number Publication Date
EP2539531A2 true EP2539531A2 (fr) 2013-01-02

Family

ID=44356622

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11726684A Withdrawn EP2539531A2 (fr) 2010-02-22 2011-02-11 Procédé et dispositif de forage

Country Status (3)

Country Link
EP (1) EP2539531A2 (fr)
DE (1) DE102010008823B4 (fr)
WO (1) WO2011100966A2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108798645A (zh) * 2018-06-07 2018-11-13 永城煤电控股集团有限公司 一种钻杆内下式测斜装置以及钻杆内下式测斜系统

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114776316B (zh) * 2022-06-22 2022-09-13 湖南鹏翔星通汽车有限公司 一种钻深精确可控的凿岩推进梁装置

Family Cites Families (8)

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Publication number Priority date Publication date Assignee Title
DE68909355T2 (de) * 1988-09-02 1994-03-31 British Gas Plc Einrichtung zum Steuern der Lage eines selbstgetriebenen Bohrwerkzeuges.
US4899835A (en) * 1989-05-08 1990-02-13 Cherrington Martin D Jet bit with onboard deviation means
DE4230624C2 (de) * 1992-09-12 1994-11-10 Deutsche Aerospace Mechanischer Erdvortriebskörper
DE10213769A1 (de) 2002-03-27 2003-10-23 Tracto Technik Verfahren zur Bestimmung der Position eines Bohrkopfes im Erdreich
AT501933A1 (de) 2004-07-26 2006-12-15 Albrecht Walter Vortriebseinrichtung
DE102005011968B4 (de) 2005-03-14 2007-09-27 Bohrtec Gmbh Vorrichtung zur Herstellung von Bohrungen im Erdreich
DE102005051357B4 (de) * 2005-10-25 2013-08-14 Rayonex Schwingungstechnik Gmbh Vorrichtung und Verfahren zur Lokalisierung eines Geräts
DE102008026456B4 (de) 2008-06-03 2012-05-24 Tracto-Technik Gmbh & Co. Kg Bohrkopf

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2011100966A2 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108798645A (zh) * 2018-06-07 2018-11-13 永城煤电控股集团有限公司 一种钻杆内下式测斜装置以及钻杆内下式测斜系统

Also Published As

Publication number Publication date
DE102010008823A1 (de) 2011-08-25
WO2011100966A2 (fr) 2011-08-25
WO2011100966A3 (fr) 2012-02-02
DE102010008823B4 (de) 2012-10-31

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