EP0138820A1 - Installation pour pratiquer des trous de forage dans les parois laterales de chambres d'exploitation souterraines de largeur limitee. - Google Patents

Installation pour pratiquer des trous de forage dans les parois laterales de chambres d'exploitation souterraines de largeur limitee.

Info

Publication number
EP0138820A1
EP0138820A1 EP84900268A EP84900268A EP0138820A1 EP 0138820 A1 EP0138820 A1 EP 0138820A1 EP 84900268 A EP84900268 A EP 84900268A EP 84900268 A EP84900268 A EP 84900268A EP 0138820 A1 EP0138820 A1 EP 0138820A1
Authority
EP
European Patent Office
Prior art keywords
shaft
flexible shaft
unit
deflection
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
EP84900268A
Other languages
German (de)
English (en)
Other versions
EP0138820B1 (fr
Inventor
Manfred Albers
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to AT84900268T priority Critical patent/ATE27725T1/de
Publication of EP0138820A1 publication Critical patent/EP0138820A1/fr
Application granted granted Critical
Publication of EP0138820B1 publication Critical patent/EP0138820B1/fr
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B19/00—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables
    • E21B19/22—Handling reeled pipe or rod units, e.g. flexible drilling pipes
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
    • E21B17/20—Flexible or articulated drilling pipes, e.g. flexible or articulated rods, pipes or cables
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP 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
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP 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
    • E21B7/061—Deflecting the direction of boreholes the tool shaft advancing relative to a guide, e.g. a curved tube or a whipstock

Definitions

  • the invention relates to a device for making boreholes, in particular in the lateral mining front of subterranean mining spaces of small width, with a drilling unit which can optionally be moved by rail and which can be supported for absorbing reaction forces, for driving and advancing a drill bit arranged on an extendable drilling shaft, the extending drilling shaft is provided with a passage channel for flushing liquid under pressure.
  • a drilling machine has also become known which can be moved relatively quickly to the place of use on the tracks laid for the coal planer or other conveying means, in order to be used there for drilling the boreholes.
  • the same space limitation applies to these machines, so that the drilling process must be interrupted continuously in order to lengthen the boring bar in short sections.
  • the feed speed of the drill should be about 2 m / min. amount, for which a feed load of up to one ton is required at a drill speed of approximately 800 rpm.
  • the use of a flushing fluid is used to flush the boreholes liquid is required, which is pressed with a pressure of at least 25 bar through the passage channel inside the boring bar.
  • the borehole should have a diameter of approximately 42 mm for the introduction of the explosive charges, the diameter of the drill pipe must not exceed approximately 30 mm, so that there is still enough backflow space for flushing out the borehole.
  • the invention has for its object to provide a device of the type mentioned, with which it is possible, under the required conditions and under the spatial conditions of a narrow strut in a direction perpendicular to the course of the strut without interruption about 2 m deep holes to bring in the rock.
  • the drilling unit is provided with a drive unit which can generally be moved in the direction of the strut relative to the unit, the drilling shaft at least partially consists of a flexible shaft formed from a steel spiral, in the interior of which the passage channel for the flushing liquid is designed as a pressure hose, and that the unit is provided with a deflection unit for the flexible shaft, by means of which the flexible shaft with the drill bit located thereon can be deflected in an operating direction at an angle to the direction of movement of the drive unit.
  • a flexible drilling shaft consisting of a steel spiral is used, which is deflected within the unit from the drilling direction, which is generally perpendicular to the strut, in the direction of the strut, so that the entire feed movement for the introduction of the bore can take place in the longitudinal direction of the strut .
  • the drive unit which is displaceable in the direction of the strut in accordance with the progress of the borehole depth, is essentially intended to generate the rotational movement of the drill.
  • the drive unit can also be additionally designed to generate the feed movement of the drill with the required feed force.
  • the entire feed force in the deflection unit for the flexible shaft must also be deflected, which places considerable demands on the design of the flexible shaft and the deflection unit. It may therefore be more appropriate to place the sole or an additional front behind the deflection unit at a point where the flexible shaft already runs in the direction of the borehole to provide linear actuator.
  • Such a feed drive can take place, for example, by means of clamping jaws which can be closed about the rotating flexible shaft, with the aid of which the shaft can be subjected to a feed force under rotation and which, after a certain feed movement, can be opened, pulled back and brought into engagement with the flexible shaft for a further feed can.
  • a clamping jaw unit as is protected by German patent 2714124 in connection with a pipe cleaning device, can preferably be used for this.
  • the drilling shaft can consist of a rigid section, to which the flexible shaft then connects.
  • Such a rigid shaft section can also be dispensed with under certain circumstances if the drive unit is in turn provided with a correspondingly long guide tube which can be telescopically pushed over the guide tube located in front of the deflection unit.
  • these pipe guides can also be designed interchangeably to suit the design of boreholes of different depths. It can also be provided that the drilling shaft can be correspondingly extended to carry out a second stroke in order to carry out particularly deep boreholes for which a single stroke of the drive unit is not sufficient.
  • the deflection unit preferably contains a turntable with rollers arranged along its circumference, which are arranged in pairs above one another in relation to the deflection plane of the flexible shaft and whose axes form two superimposed tangent polygons with respect to the turntable.
  • These rollers are expediently spherical along their surface lines, so that the curve of the surface lines approximates the circular shape.
  • Known flexible shafts wound from a steel spiral are generally made from a steel profile with a circular cross-section. In the event that high axial forces have to be absorbed, there is a risk with such shafts that the individual turns of the shaft slide laterally onto one another.
  • the flexible shaft is provided at each of its ends with coupling pieces, which by means of a thread extension corresponding to the spiral turns of the shaft are screwed into the shaft ends.
  • coupling pieces which by means of a thread extension corresponding to the spiral turns of the shaft are screwed into the shaft ends.
  • this possibility no longer exists.
  • the pressure hose provided at its end with a tubular extension is inserted into a bore in the shaft coupling piece and is sealingly connected to the shaft coupling piece from the other side.
  • a pipe screw connection with a conical ring for example a screw connection of the BEMETO type
  • the shaft coupling piece being designed as a union nut.
  • the pipe extension of the pressure hose can also be glued within the shaft coupling piece.
  • FIG. 1 shows a schematic representation of the overall arrangement of the device
  • FIG. 2 shows a schematic illustration of an embodiment of the deflection unit in plan view
  • FIG. 3 shows a section through the turntable of the deflection unit according to FIG. 2,
  • Figure 7 is an illustration of the coupling pieces of a flexible shaft with the attachment of the ends of the pressure hose for the flushing fluid therein.
  • FIG. 1 the overall arrangement of a device for drilling holes is shown schematically.
  • the direction of the strut is indicated by arrow 1.
  • the device consists of a drive unit 2, a deflection unit 3 and an additional feed unit 4 for the drilling shaft 5, which is essentially designed as a flexible shaft, with which a drill bit (not shown) for driving a borehole into a rock wall is driven in the direction of the arrow 6.
  • the entire device is arranged on a common frame (not shown) which can be moved in the direction of the strut course 1 on the provided travel paths.
  • the drive unit 2 contains the rotary drive for the drilling shaft 6 and can be moved relative to the deflection unit 3 in the direction of arrow 1 on the common frame (not shown).
  • the drive unit 8 and the deflection unit 3 are each provided with a pipe guide 7 or 8 for the flexible shaft 5, which can be telescopically pushed over one another when the drive unit 2 is moved relative to the deflection unit 3.
  • the deflection path 9 of the flexible shaft 5 is only indicated by dashed lines.
  • the additional feed unit 4 is like the deflection unit 3, stationarily mounted on the common frame (not shown) and contains a feed drive for the flexible shaft 5 which works with rotating clamping jaws and which is not shown in detail.
  • FIG. 1 An embodiment of the deflection unit is shown schematically in FIG. One can see the course of the flexible shaft 5, which, coming from the drive unit, is introduced into the deflection unit 3 through the pipe guide 7 shown only with its end section. It leaves the deflection unit 3 after a deflection by 90 ° through a guide piece 10 which guides the flexible shaft 5 in the direction of a borehole to be drilled.
  • the guide piece 10 and the feed unit 4 which may be connected to it can be made changeable in their angular position with respect to the pipe guide 7, since it may be necessary under certain circumstances to also drill holes at an angle which is different from the direction of movement of the device vertical direction deviates.
  • the flexible shaft 5 On its deflection path within the deflection unit 3, the flexible shaft 5 is supported on the outside of its curved course by a turntable 11, which is shown in vertical section in FIG. 3.
  • the turntable 11 is provided along its circumference with a number of rollers 12 arranged in pairs one above the other, which are rotatably mounted in bearing blocks 13 arranged in a ring shape.
  • the rollers 12 are designed so that the connection of their outer surface lines is approximated to the circular shape.
  • the bearing blocks 13 are set back from the outer circumferential line circle of the rollers 12 and are made as small as possible in order to have the circumference of the turntable 11 as far as possible covered with roller surfaces Pairs of rollers 12 are arranged in height so that the flexible shaft 5 is supported in the recess 14 ( Figure 3) between the rollers 12 of a pair and is held against evasion up and down.
  • the rollers 12 follow the rotation of the flexible shaft 5 and the turntable 11 continues to rotate in accordance with the advance of the shaft.
  • the turntable 11 is designed such that it absorbs the entire reaction force for deflecting the feed force applied in the direction of the pipe guide 7 in the direction of the guide piece 10.
  • the type of design of the turntable 11 prevents friction of the flexible shaft 5 at its deflection support under the pressure of the applied axial feed forces.
  • FIGS. 4 to 6 show different embodiments for the flexible shaft 5.
  • the use of a shaft with a circular steel profile in cross section is limited to feed forces up to a certain height and also to a torque to be transmitted up to a certain height. It is therefore expedient and in some cases indispensable to choose a cross-sectional profile of the steel windings of the flexible shaft, which on the one hand ensures that the individual windings lie as flat as possible on the one hand and on the other hand also a lateral deflection or a bending of individual windings under the applied torque and applied feed force ver prevents.
  • Figure 4 shows a section of a flexible shaft, the steel profile of which is only flattened on opposite sides in order to achieve a flat contact of the turns against one another and to avoid the risk of lateral shear of turns, as is the case with the only circular contact at the highest points of the circle Profiles is possible.
  • Figure 5 shows a profile in which a transverse offset between the individual turns is additionally prevented by interlocking beads and grooves.
  • the shaft shown in FIG. 6 shows a particularly advantageous embodiment.
  • the cross-sectional profile of the steel windings here has a cranked design, so that the individual windings overlap one another. This creates both axial mutual contact surfaces 15 and radial contact surfaces 16 which, even with a certain spreading of the flexible shaft on the outside of its deflection path, still ensure mutual engagement, whereby a transverse offset between the turns or a twisting of a single turn is avoided.
  • FIG. 7 shows the coupling ends of a flexible shaft which, for the sake of simplicity, is drawn with a circular steel profile.
  • this is provided with a coupling piece 17 at each end.
  • These coupling pieces 17 are each screwed into the end of the flexible shaft 5 with a threaded extension 18, the thread of the threaded extension 18 corresponding to the turns of the flexible shaft.
  • the direction of rotation is such that the coupling pieces 17 are positive Turn the direction of rotation of the shaft further into its ends.
  • a high-pressure hose 19 Arranged within the flexible shaft 5 is a high-pressure hose 19 which, in the illustration in FIG. 7, as well as the flexible shaft 5 itself is shown broken off.
  • the high-pressure hose 19 is provided at its ends with a tubular extension 20 with which it is inserted into a bore 21 of the coupling piece 17.
  • a wedge ring 23 Within an internally threaded widening 22 within the coupling piece 17, a wedge ring 23 is pushed onto the tubular extension 20 of the high-pressure hose 19 from the side of the coupling piece 17 facing away from the flexible shaft 5, which is clamped against a shoulder 25 in the coupling piece 17 by means of a screw nipple 24 .
  • the end of the tubular extension 20 of the high-pressure hose 19 lies against a shoulder 26 within the nipple 24.
  • the tubular extension 20 is designed so that it rests with another shoulder 27 against the front edge of the coupling piece 17 and is supported there.
  • This configuration makes it possible to connect the ends of the high-pressure hose 19 to the coupling pieces 17 after they have been screwed into the ends of the flexible shaft 5.
  • the nipple 24 is shown in FIG. 7 with an external sextant for screwing in.
  • the diameter of the nipple can also be selected smaller at this point in order to have even more space available for a further threaded thread on the outside of the coupling piece 17, with which this then connects with the adjacent elements, for example a piece of a rigid, hollow drilling shaft or to connect the drill bit.
  • This on closing, hollow elements themselves serve as a flow channel for the rinsing liquid, so that it is generally not necessary to continue the high-pressure hose provided in the flexible shaft into these elements.

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Mechanical Engineering (AREA)
  • Earth Drilling (AREA)

Abstract

Dans l'industrie minière, il est difficile de pratiquer, à partir d'une chambre de taille étroite, des forages de trous de mine dans les parois latérales perpendiculairement à la direction de la chambre de taille. La présente invention prévoit dans ce but un agrégat de forage avec un arbre de forage (5) souple formé par une spirale en acier, qui est guidé en direction (7) de la chambre de taille et qui change de direction à l'intérieur de l'agrégat en tournant essentiellement à angle droit pour aller en direction (10) du trou de forage. La station de déviation (3), qui est prévue à cet effet, comporte dans un mode de réalisation préférentiel un disque rotatif (11) équipé de paires de cylindres (12), qui reçoit les forces d'avance considérables et diminue l'usure de l'arbre de forage (5) souple. Le fluide de lavage indispensable pour le forage est amené par un tuyau de refoulement s'étendant à l'intérieur de l'arbre souple (5), qui est relié de manière étanche aux extrémités de l'arbre souple au moyen de raccords à vis spéciaux. Pour la spirale en acier de l'arbre souple sont prévus des profilés spéciaux devant empêcher les spires de se tordre.
EP84900268A 1982-12-24 1983-12-22 Installation pour pratiquer des trous de forage dans les parois laterales de chambres d'exploitation souterraines de largeur limitee Expired EP0138820B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84900268T ATE27725T1 (de) 1982-12-24 1983-12-22 Vorrichtung zum einbringen von bohrloechern in die seitenwaende von unterirdischen abbauraeumen geringer breite.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19823247921 DE3247921A1 (de) 1982-12-24 1982-12-24 Vorrichtung zum einbringen von bohrloechern in die seitenwaende von unterirdischen abbauraeumen geringer breite
DE3247921 1982-12-24

Publications (2)

Publication Number Publication Date
EP0138820A1 true EP0138820A1 (fr) 1985-05-02
EP0138820B1 EP0138820B1 (fr) 1987-06-10

Family

ID=6181686

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84900268A Expired EP0138820B1 (fr) 1982-12-24 1983-12-22 Installation pour pratiquer des trous de forage dans les parois laterales de chambres d'exploitation souterraines de largeur limitee

Country Status (5)

Country Link
US (1) US4577703A (fr)
EP (1) EP0138820B1 (fr)
DE (2) DE3247921A1 (fr)
GB (1) GB2139929A (fr)
WO (1) WO1984002555A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10329061B2 (en) 2013-11-07 2019-06-25 Thermos L.L.C. System and methods for managing a container or its contents

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2194183A (en) * 1986-08-22 1988-03-02 Perard Torque Tension Ltd Drilling apparatus
DE3629366A1 (de) * 1986-08-29 1988-03-03 Hausherr & Soehne Rudolf Verfahren und vorrichtung zum herstellen von bohrloechern aus einer gegenueber der bohrlochachse abgewinkelten position heraus
DE3905999C1 (fr) * 1989-02-25 1990-01-04 Bergwerksverband Gmbh, 4300 Essen, De
US5197783A (en) * 1991-04-29 1993-03-30 Esso Resources Canada Ltd. Extendable/erectable arm assembly and method of borehole mining
DE4401433C2 (de) * 1994-01-19 1998-02-05 Rak System Horst Kluender Gmbh Anordnung zum Verbinden von flexiblen Kunststoffstangen
EA200201221A1 (ru) * 2000-05-16 2003-12-25 Омега Ойл Кампани Способ и устройство для подземного отбора углеводородов
EP1764475B1 (fr) * 2005-09-19 2009-02-11 Services Petroliers Schlumberger Système de forage et méthodes de forage des puits latéraux
FR2905724B1 (fr) * 2006-09-13 2008-12-19 Sandvik Mining & Constr Oy Tubage flexible pour dispositif de foration par rotopercussion.
EP2896780A1 (fr) * 2014-01-17 2015-07-22 Sandvik Mining and Construction Lyon SAS Tige de forage flexible

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US2516421A (en) * 1945-08-06 1950-07-25 Jerry B Robertson Drilling tool
US2438637A (en) * 1946-03-07 1948-03-30 Herbert D Jansen Combined conveyor and excavator
US2548616A (en) * 1948-02-02 1951-04-10 Priestman George Dawson Well drilling
US2608384A (en) * 1948-05-21 1952-08-26 Henry R Alexander Drill
US3221823A (en) * 1962-06-16 1965-12-07 Tonti Emilio Depth drilling machine mounted on a four-wheeled truck
US3460563A (en) * 1965-07-19 1969-08-12 Northrop Corp Flexible drill string and operating apparatus therefor
US3765486A (en) * 1971-06-24 1973-10-16 Shell Oil Co Well blowout confinement with dense balls
US3797589A (en) * 1973-04-16 1974-03-19 Smith International Self guiding force applicator
FR2232669A1 (en) * 1973-06-06 1975-01-03 Inst Francais Du Petrole Drill assembly for boring lateral holes - from a main borehole is guided by a rigid pipe
US4007797A (en) * 1974-06-04 1977-02-15 Texas Dynamatics, Inc. Device for drilling a hole in the side wall of a bore hole
US4149391A (en) * 1975-11-25 1979-04-17 W B Driver Flexible drill pipe
US4057115A (en) * 1976-05-07 1977-11-08 The United States Of America As Represented By The Secretary Of The Interior Flexible shaft for a roof drill
US4066137A (en) * 1976-06-10 1978-01-03 Pei, Inc. Flame jet tool for drilling cross-holes
GB1597951A (en) * 1976-12-20 1981-09-16 Sabol K Bendalble hose apparatus for effecting lateral channelling in coal or oil shale beds
US4141225A (en) * 1977-02-10 1979-02-27 The United States Of America As Represented By The Secretary Of The Interior Articulated, flexible shaft assembly with axially lockable universal joint
US4153119A (en) * 1978-04-10 1979-05-08 Continental Oil Company Directional drilling apparatus
US4226288A (en) * 1978-05-05 1980-10-07 California Institute Of Technology Side hole drilling in boreholes

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10329061B2 (en) 2013-11-07 2019-06-25 Thermos L.L.C. System and methods for managing a container or its contents

Also Published As

Publication number Publication date
GB2139929A (en) 1984-11-21
US4577703A (en) 1986-03-25
EP0138820B1 (fr) 1987-06-10
DE3247921A1 (de) 1984-07-26
GB8334290D0 (en) 1984-02-01
DE3372006D1 (en) 1987-07-16
WO1984002555A1 (fr) 1984-07-05

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