EP0703345A2 - Mouton de forage - Google Patents

Mouton de forage Download PDF

Info

Publication number
EP0703345A2
EP0703345A2 EP95111077A EP95111077A EP0703345A2 EP 0703345 A2 EP0703345 A2 EP 0703345A2 EP 95111077 A EP95111077 A EP 95111077A EP 95111077 A EP95111077 A EP 95111077A EP 0703345 A2 EP0703345 A2 EP 0703345A2
Authority
EP
European Patent Office
Prior art keywords
boring device
fuselage
ram boring
head
striking mechanism
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Withdrawn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
EP95111077A
Other languages
German (de)
English (en)
Other versions
EP0703345A3 (fr
Inventor
Dietmar Dipl.-Wi-Ing. Jenne
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.)
Terra AG fuer Tiefbautechnik
Original Assignee
Terra AG fuer Tiefbautechnik
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 Terra AG fuer Tiefbautechnik filed Critical Terra AG fuer Tiefbautechnik
Publication of EP0703345A2 publication Critical patent/EP0703345A2/fr
Publication of EP0703345A3 publication Critical patent/EP0703345A3/fr
Withdrawn legal-status Critical Current

Links

Images

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
    • E21B7/18—Drilling by liquid or gas jets, with or without entrained pellets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D9/00—Portable percussive tools with fluid-pressure drive, i.e. driven directly by fluids, e.g. having several percussive tool bits operated simultaneously
    • B25D9/14—Control devices for the reciprocating piston
    • B25D9/145—Control devices for the reciprocating piston for hydraulically actuated hammers having an accumulator
    • 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
    • E21B4/00—Drives for drilling, used in the borehole
    • E21B4/06—Down-hole impacting means, e.g. hammers
    • E21B4/14—Fluid operated hammers
    • 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
    • E21B4/00—Drives for drilling, used in the borehole
    • E21B4/20—Drives for drilling, used in the borehole combined with surface drive
    • 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
    • E21B7/065—Deflecting the direction of boreholes using oriented fluid jets
    • 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
    • E21B7/26—Drilling without earth removal, e.g. with self-propelled burrowing devices

Definitions

  • the invention relates to a ram boring device with an essentially cylindrical fuselage, a head in which at least one nozzle opening is formed for the exit of a high-pressure liquid jet, and an impact mechanism arranged in the fuselage and driven by a pressure medium for propelling the ram boring device.
  • Such a ram boring device is known, for example, from US Pat. No. 4,858,703.
  • the striking mechanism is driven by compressed air.
  • the liquid required for the high-pressure liquid jet is fed via a line into an expansion chamber in the housing and is expelled from this expansion chamber by means of compressed air.
  • the invention has for its object to provide a ram boring device of the type mentioned, which is simpler and cheaper in construction and easier to handle.
  • the striking mechanism is designed as a hydraulic striking mechanism and that the striking mechanism and the nozzle opening can be connected to the same hydraulic fluid source.
  • a pressure medium source which for example supplies water, a water-polymer mixture or bentonite to the ram boring device under high pressure.
  • a single pressure medium supply line to the ram boring device is sufficient.
  • the ram boring device can be constructed correspondingly more simply and is easier to handle, since it only has to be connected to the stationary station via a single pressure medium hose.
  • a control valve for selectively supplying the pressure fluid to the impact mechanism and / or to the nozzle opening can be arranged in the fuselage in the hydraulic fluid line upstream of the striking mechanism and / or the nozzle opening.
  • the control valve can be designed so that it can be controlled depending on the pressure level of the hydraulic fluid.
  • the arrangement can be such that the hammer mechanism does not work at flushing pressures of up to 80-100 bar, but rather the flushing liquid only emerges in a known manner from the front or the flushing nozzles of the drill head in order to loosen the soil. If the operator sets the flushing pressure to a value above 80-100 bar, the control valve opens the supply to the striking mechanism so that it begins to work. As a result, the ram boring device actively drives through the soil even in gravelly soils. While the striking mechanism is working, flushing liquid for loosening the soil emerges at the front of the drill head in a known manner.
  • the head together with the fuselage, can preferably be rotated about its longitudinal axis by means of the propulsion linkage and has a control surface directed at a different angle from the longitudinal axis of the fuselage.
  • at least the control surface can be equipped with hard metal bodies.
  • the ram boring device is rotated at, for example, 100 to 200 revolutions per minute.
  • the ram boring device is stopped in a certain position of the head and the boring device is then moved forward without striking or statically, being deflected in the desired direction by the control surface on the head. This process is supported by the liquid that emerges from the orifice orifices.
  • the head can also be symmetrical with respect to the longitudinal axis of the fuselage. Such a head can smash obstacles better than the asymmetrical head with control surface. However, its steering characteristics are less good than the asymmetrical head, since the control effect can only be achieved by an asymmetrical arrangement of the nozzle openings.
  • the head can be axially rigid or movably connected to the body.
  • the head is expediently connected to the fuselage so that different shapes of the head can be used in accordance with the respective floor.
  • the ram boring device can contain, in a manner known per se, a transmitter for emitting electromagnetic radiation, with the aid of which the position of the boring device can be determined and via which measurement data can also be transmitted from the ram boring device to the surface.
  • the transmitter is expediently arranged in a shock-absorbing manner in relation to the direction of advance behind the striking mechanism, in order to better protect it against damage.
  • the fuselage can be divided into a part containing the striking mechanism and a part receiving the transmitter.
  • the outer diameter of the ram boring device decreases from front to back. On the one hand, this facilitates the control of the device and, on the other hand, the discharge of the drilled or displaced material through the flushing liquid to the rear.
  • the outer diameter of the fuselage section receiving the striking mechanism is expediently smaller than the outer diameter of the head and the outer diameter of the fuselage section receiving the transmitter is smaller than the outer diameter of the fuselage section receiving the striking mechanism.
  • FIG. 1 shows a drill carriage 2 with a ramp 4 for driving, rotating and controlling a ram drilling device 6 by means of a drill pipe 8.
  • the drill carriage contains a source of hydraulic fluid, not shown.
  • the ram boring device 6 shown in FIG. 2 comprises a cylindrical fuselage 10, at the front end of which a boring head 12 is arranged which is symmetrical with respect to the longitudinal axis of the fuselage. This has at least one nozzle opening 14 which is connected via a channel 16 and a control valve 24 to a pressure medium connection 18 at the rear end of the fuselage or housing 10.
  • a striking mechanism 20 which is only indicated schematically and which, together with the head 12, can automatically propel the fuselage 10 through floors of a certain nature.
  • the striking mechanism 20 is also connected to the pressure medium connection 18 via a line 22 and the control valve 24.
  • the control valve 24 can be controlled in a pressure-dependent manner in such a way that either only the nozzle opening 14 or the nozzle opening 14 and the striking mechanism 20 are connected to the pressure fluid source.
  • the housing 10 is connected to the hollow jacking or drilling rod 8, via which the ram boring device can be statically driven and rotated from the drilling carriage 2.
  • a pressure fluid for example water, a water-polymer mixture or another known drilling fluid, is supplied via the pressure medium connection 18 and a pressure fluid line 26 connected to it and guided within the hollow drill pipe 8. If the pressure is below a predetermined threshold value, for example 80 to 100 bar, the control valve 24 blocks the line 22. Pressure fluid thus emerges from the nozzle openings 14 in order to loosen up or flush away the soil in front of the head 12.
  • a predetermined threshold value for example 80 to 100 bar
  • the pressure of the pressure fluid is increased above the threshold value, so that the control valve 24 opens and the pressure fluid drives the striking mechanism 20.
  • the ram boring device can also be driven through gravelly or stony soils or smash individual obstacles.
  • the threshold value at which the control valve 24 blocks the line 22 again and thus interrupts the operation of the striking mechanism 20 should be significantly below the threshold value for switching on the striking mechanism 20 in order to prevent the control valve from fluttering. The moment the hammer mechanism is switched on, the fluid pressure drops suddenly due to the increased fluid requirement. If the two threshold values for activating or deactivating the striking mechanism did not differ, or differed only slightly from one another, permanent activation and deactivation of the striking mechanism could not be avoided.
  • the directional control of the ram boring device according to FIG. 2 takes place in such a way that the ram boring device is held in a certain rotational position, so that the asymmetrically arranged nozzles on the side of the ram boring device soften the ground, after which the ram boring device is to be deflected. If the ram boring device is then driven forward using the drill pipe or the impact device, it is deflected into the deviated ground area. The ram boring device can then be rotated again by means of the drill pipe for straight running.
  • the fuselage 10 comprises a first section 30, in which the striking mechanism 20 and the control valve 24 are arranged.
  • a asymmetrical control head 32 arranged interchangeably.
  • the control head 32 has a control surface 36 which is directed obliquely to the fuselage axis 34 and is equipped with hard metal bodies 38.
  • the control head 32 and fuselage 10 can be rotated about the fuselage axis 34 by means of the drill pipe 8 or held in a desired position relative to the fuselage 10.
  • the control head 34 also has a nozzle opening 14 which opens towards the side in such a way that the emerging nozzle jet is directed obliquely forward away from the fuselage axis 34.
  • a coupling 28 is provided for the connection of the sections of the liquid line 16, which enables an axial movement of the control head 12 relative to the fuselage 10, as will be explained with reference to FIGS. 4 and 5.
  • a transmitter housing 40 adjoins the rear end of the fuselage section 30, in which a transmitter 42 is mounted in a shock-absorbing manner.
  • the transmitter 42 emits electromagnetic radiation through slots 44 provided in the transmitter housing 40, with the aid of which the position of the ram boring device can be determined via suitable receivers on the earth's surface.
  • the transmitter 42 also serves to determine the position of the control surface 36 in space so that the ram boring device can be effectively controlled.
  • the outer diameter of the cylindrical fuselage section 30 is somewhat smaller than the outer diameter of the control head 32.
  • the outer diameter of the transmitter housing 40 in turn is somewhat smaller than the outer diameter of the fuselage section 30.
  • the figures show the control head 12 and the fuselage section 30 of the embodiment shown in FIG. 3.
  • the same parts are provided with the same reference numerals.
  • the fuselage section 30 consists of three housing parts 48, 50, 52.
  • the housing sections 50 and 52 are screwed together at 54.
  • the two sections 50 and 48 are put together and secured by bolts 56.
  • the control head 32 is inserted into the front end of the housing section 48 with a pin 58.
  • the pin 58 has on its circumferential surface a groove 60 into which a bolt 62 penetrating the housing section 48 engages.
  • the control head 32 is thereby held on the housing section 48 so that it cannot rotate but is axially movable.
  • a percussion piston 66 is axially displaceably mounted in an axial bore, generally designated 64, in the fuselage section 30. It comprises a larger-diameter front shaft 68 and a smaller-diameter rear shaft 70.
  • a first front piston section 72 defines with front seals 74 in the axial direction a front chamber 76 of bore 64.
  • a rear second piston section 78 delimits an axial distance from first piston section 72
  • the pressure line 22 for supplying the hydraulic fluid to the striking mechanism 20 connects the control valve 24 to an inlet opening 86 in the front chamber and an inlet opening 88 in the rear chamber.
  • the rear chamber and the middle chamber are connected by a control line 90.
  • the middle chamber 80 is also connected via an outlet opening 92 to an outlet 94 for the pressure fluid.
  • the outlet 94 is also connected via a line 96 to an outlet opening 98 in the rear chamber 84.
  • the rear shaft 70 is surrounded at a radial distance by a control sleeve 100, which has a plurality of radial bores 102.
  • FIG. 4 shows the percussion piston in its foremost position, in which it strikes the pin 58 of the control head 32, the axial movement of this control head not being taken into account in the drawing.
  • the axial mobility of the control head 32 enables a better utilization of the kinetic energy of the percussion piston 66.
  • the control sleeve 100 is also in its front end position.
  • the middle chamber 80 is connected to the outlet 94.
  • the inflow of pressure fluid through the inlet opening 88 is blocked by the control sleeve 100.
  • the inlet opening 86 in the first chamber is only partially blocked by the front piston section 72, so that pressure fluid can act on the annular surface 104 of the piston section 72 facing forward.
  • the percussion piston 66 is moved from the position shown in the figure to the left, ie moved backwards. As soon as the piston section 72 has passed the outlet opening 92 of the middle chamber 80, pressure fluid can no longer escape from the middle chamber.
  • the dimensioning of the pressure-effective areas on the control sleeve 100 is selected such that the latter is likewise moved to the right or to the rear in FIG. 4 until it comes on strikes a shoulder 106 of the housing portion 52. In this position, the inlet opening 88 is opened for the admission of pressure fluid to the rear chamber 84.
  • FIG. 5 This position of the striking mechanism is shown in FIG. 5.
  • the pressure of the inflowing hydraulic fluid acts on the rearward-facing annular surface 108 of the piston section 78, which is larger than the annular surface 104 of the piston section 72.
  • the percussion piston 66 is not only braked but moved again to the left, ie forwards, from the end position shown in FIG. 5 until it hits the pin 58 of the control head 32.
  • the piston section 72 exposes the outlet opening 92 at the central chamber 80 so that the pressure can drop therein.
  • the pressure drop in the middle chamber 80 via the control line 90 causes the pressure in the rear chamber 84 to move the control sleeve 100 to the left, ie forward, until it has reached the position shown in FIG. 4, in which the inlet opening 88 for the hydraulic fluid to the rear chamber 84 is closed again.
  • the cycle described begins again.
  • the pressure of the flushing liquid can be continuously adjusted from the drilling vehicle 2 arranged on the surface of the earth or in a starting pit. At a flushing pressure of up to approx. 100 bar, the control valve 24 remains closed, so that the striking mechanism 20 does not work. In this case the device only works as a drilling device. In order to drill straight ahead, the ram boring device, ie head 32 and fuselage 10, is rotated at approximately 100 to 200 revolutions per minute and at the same time is pushed forward via the linkage 8, not shown. The flushing liquid, which emerges from nozzles facing forwards or to the side, loosens the soil and thus facilitates the drilling process. In Special soils, such as sandy soils, require the soil to be discharged backwards along the rod.
  • the drilling head In order to control the drilling device and thus to change the direction of the drilling, the drilling head is brought into a suitable rotational position, wherein this information about the current rotational position can also be determined via the transmitter 42. The drilling device is then pressed forward when the drilling head 32 is not rotating. The control surface 36 directed obliquely to the fuselage axis 34 causes the drilling device to be deflected in the desired direction. This process is also supported by the rinsing liquid that emerges from the nozzles 14. This is particularly the case if the nozzles are attached laterally, since the soil can then be loosened in the direction in which the drilling device is to be deflected.
  • the drilling device can only be driven by means of the striking mechanism 20.
  • the flushing pressure is set to 150 to 200 bar, for example. Since the control valve 24 opens from a flushing pressure of approximately 100 bar, the striking mechanism 20 now begins to strike. The rinsing liquid now flows both through the channel 16 to the nozzle or nozzles 14 and via the line 22 to the striking mechanism 20 in order to drive it. The flushing liquid emerges from the striking mechanism 20 almost without pressure laterally through the bore 94 in the fuselage section 30. This is facilitated by the somewhat smaller outer diameter of the fuselage section 30. The emerging drilling fluid takes along drilled material.
  • the Striking mechanism 20 thus supports the driving of the ram boring device when driving straight ahead and when cornering in gravel and stony soils, in which the purely static propulsion supported by the flushing jets is no longer sufficient.

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Mechanical Engineering (AREA)
  • Earth Drilling (AREA)
EP95111077A 1994-09-20 1995-07-14 Mouton de forage Withdrawn EP0703345A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4433533 1994-09-20
DE4433533A DE4433533C1 (de) 1994-09-20 1994-09-20 Rammbohrvorrichtung

Publications (2)

Publication Number Publication Date
EP0703345A2 true EP0703345A2 (fr) 1996-03-27
EP0703345A3 EP0703345A3 (fr) 1997-03-12

Family

ID=6528714

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95111077A Withdrawn EP0703345A3 (fr) 1994-09-20 1995-07-14 Mouton de forage

Country Status (3)

Country Link
US (1) US5695014A (fr)
EP (1) EP0703345A3 (fr)
DE (1) DE4433533C1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0846834A3 (fr) * 1996-12-04 1999-08-04 Tracto-Technik Paul Schmidt Spezialmaschinen Mouton de forage avec surveillance de trajectoire
WO2002053866A3 (fr) * 2000-12-29 2003-03-20 Tracto Technik Dispositif et procede pour changer des conduites
CN106894757A (zh) * 2015-12-18 2017-06-27 中国石油天然气集团公司 一种水平定向钻用射流式液动冲击钻具

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2309239B (en) * 1996-01-17 2000-06-21 David Edward Holloway Ground boring apparatus
DE19607365C5 (de) * 1996-02-27 2004-07-08 Tracto-Technik Paul Schmidt Spezialmaschinen Verfahren zum Lenken eines Erdbohrgeräts und ein lenkbares Gerät zum Herstellen einer Erdbohrung
JP3153128B2 (ja) * 1996-06-13 2001-04-03 株式会社クボタ 推進体
DE19652530C2 (de) * 1996-12-17 1998-12-03 Terra Ag Tiefbautechnik Imlochhammer
DE19850183A1 (de) * 1998-10-30 2000-05-11 Flowtex Technologie Gmbh & Co Schlagbohrkopf
US6125950A (en) * 1998-12-15 2000-10-03 Osborne; Joseph D. Collared boring bit
US6161636A (en) * 1998-12-15 2000-12-19 Osborne; Joseph D. Boring head and bit protective collar
GB9903256D0 (en) * 1999-02-12 1999-04-07 Halco Drilling International L Directional drilling apparatus
DE10146025B4 (de) * 2000-12-02 2004-12-16 Tracto-Technik Gmbh Verfahren und System zum horizontalen Erdbohren sowie Schlagspitze und Verfahren zum Starten eines Schlagwerkzeugs
GB2389134B (en) * 2000-12-02 2005-06-08 Tracto Technik Pneumatic rock-drilling apparatus
DE10101708B4 (de) * 2001-01-15 2006-02-09 Tracto-Technik Gmbh Verfahren zum Felsmeißeln
US7681658B2 (en) 2007-11-06 2010-03-23 Maurice DUVAL Pneumatic impact tool
US8196677B2 (en) 2009-08-04 2012-06-12 Pioneer One, Inc. Horizontal drilling system
SE534770C2 (sv) * 2010-01-11 2011-12-13 Atlas Copco Rock Drills Ab Slående bergborrmaskin innefattande en frontdel med ett spolhus
DE202011100538U1 (de) * 2011-05-11 2012-08-14 Max Wild Gmbh Bohranlage
US9850715B2 (en) * 2014-01-27 2017-12-26 The Charles Machine Works, Inc. Modular compaction boring machine system

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4858703A (en) 1987-11-02 1989-08-22 Underground Technologies, Inc. Self-propelled subsoil penetrating tool system

Family Cites Families (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2046659A (en) * 1934-05-10 1936-07-07 Worthington Pump & Mach Corp Percussive tool blowing device
US2090032A (en) * 1936-12-28 1937-08-17 Cleveland Rock Drill Co Blowing device
US2572841A (en) * 1946-05-31 1951-10-30 Joy Mfg Co Rock drill
US3167136A (en) * 1959-12-31 1965-01-26 Socony Mobil Oil Co Inc Fluid-actuated drilling tool
US3888319A (en) * 1973-11-26 1975-06-10 Continental Oil Co Control system for a drilling apparatus
SU613098A1 (ru) * 1976-10-06 1978-06-30 Институт Геотехнической Механики Ан Украинской Сср Устройство ударного действи дл разрушени горных пород
SE444127B (sv) * 1984-06-25 1986-03-24 Atlas Copco Ab Tryckvetskedriven senkborrmaskin
GB8605009D0 (en) * 1986-02-28 1986-04-09 Roxbury Ltd Soil displacement tools
US4875292A (en) * 1986-04-08 1989-10-24 Ronald L. McFarlane Control system for earth boring tool
US4694913A (en) * 1986-05-16 1987-09-22 Gas Research Institute Guided earth boring tool
US4828048A (en) * 1986-11-10 1989-05-09 Mayer James R Hydraulic Percussion tool
US4749050A (en) * 1987-02-13 1988-06-07 Ritter Lester L Impact tool for tunneling
SE464145B (sv) * 1988-08-31 1991-03-11 Diamant Boart Craelius Ab Anordning foer upptagning av haal i marken
EP0357314B1 (fr) * 1988-09-02 1993-09-22 British Gas plc Dispositif pour contrôler la position d'un outil de forage autopropulsé
US4907658A (en) * 1988-09-29 1990-03-13 Gas Research Institute Percussive mole boring device with electronic transmitter
GB8913319D0 (en) * 1989-06-09 1989-07-26 British Gas Plc Moling system
FI904366A0 (fi) * 1989-11-08 1990-09-04 Sulzer Ag Hydraulisk borranordning och foerfarande foer dess anvaendning.
DE69024978T2 (de) * 1990-07-12 1996-12-12 G Drill Ab Gesteinsbohrgerät mit hydraulischem antrieb im bohrloch
CH683016A5 (de) * 1990-12-24 1993-12-31 Terra Ag Tiefbautechnik Verfahren zum Aufweiten eines Bohrloches und Aufweitgerät.
US5258755A (en) * 1992-04-27 1993-11-02 Vector Magnetics, Inc. Two-source magnetic field guidance system

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4858703A (en) 1987-11-02 1989-08-22 Underground Technologies, Inc. Self-propelled subsoil penetrating tool system

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0846834A3 (fr) * 1996-12-04 1999-08-04 Tracto-Technik Paul Schmidt Spezialmaschinen Mouton de forage avec surveillance de trajectoire
US6142244A (en) * 1996-12-04 2000-11-07 Tracto-Technik Paul Schmidt Spezialmachinen Percussion boring machine with run monitoring
WO2002053866A3 (fr) * 2000-12-29 2003-03-20 Tracto Technik Dispositif et procede pour changer des conduites
GB2389382A (en) * 2000-12-29 2003-12-10 Tracto Technik Device and method for changing lines
GB2389382B (en) * 2000-12-29 2004-12-15 Tracto Technik Device and method for replacing lines
US7056065B2 (en) 2000-12-29 2006-06-06 Tracto-Technik Gmbh Device and method for changing lines
CN106894757A (zh) * 2015-12-18 2017-06-27 中国石油天然气集团公司 一种水平定向钻用射流式液动冲击钻具

Also Published As

Publication number Publication date
EP0703345A3 (fr) 1997-03-12
DE4433533C1 (de) 1995-11-23
US5695014A (en) 1997-12-09

Similar Documents

Publication Publication Date Title
DE4433533C1 (de) Rammbohrvorrichtung
DE3633749C2 (de) Druckluft-Schlagbohrverfahren und Druckluft-Schlagbohrvorrichtung zur Durchführung desselben
DE2157259C3 (de) Rammbohrgerät
DE2306397C3 (de) Vorrichtung zum bergmännischen drehenden oder drehschlagenden Bohren
DE3710162C1 (de) Rammbohrgeraet mit beweglichem Meissel
DE19637697C2 (de) Umkehrbares pneumatisches Bodenstechwerkzeug
EP0522446B1 (fr) Procédé pour contrÔler la direction d'un appareil de forage du sol et dispositif pour l'exécution de forages
EP0548588B1 (fr) Dispositif pour réaliser des forages dans le sol
EP0494408B1 (fr) Procédé et appareil pour élargir un puits de forage
CH629871A5 (en) Compressed-air device for forming bores in the ground and method of operating the compressed-air device
DE10106942B4 (de) Pneumatisches Bodenstechwerkzeug mit beweglichem Meißelkopf
DE2063567C3 (de) Vorrichtung zum Erweitern eines durch Verdrängung und Verdichtung von Erdreich hergestellten Vorbohrlochs
EP0612912B1 (fr) Dispositif de forage du sol
DE2924392C2 (de) Bohrvorrichtung zum Überlagerungsbohren
DE2758385C3 (de) Schlag-Bohreinrichtung für Großlochbohrungen
DE3012482A1 (de) Vorrichtung zum niederbringen von bohrloechern in gesteinsfreies oder gesteinsarmes erdreich
EP0358786A1 (fr) Dispositif de forage superposé
DE19725052C2 (de) Bohrgerät
CH672526A5 (fr)
DE1811202A1 (de) Bohrer
DE2807121B2 (de) Verfahren und Vorrichtung zur Hochdruck-Strömungsmittel-Reinigung von Strömungswegen in Rohren
AT407070B (de) Verfahren und vorrichtung zum herstellen einer bodenbohrung
DE6941710U (de) Vorrichtung zum ueberlagerungs-, ankerloch und/oder unterwasserbohren
DE19538215B4 (de) Einrichtung zum Erneuern von Rohrleitungen
DE19538037A1 (de) Einrichtung zum Erneuern oder Herstellen von Rohrleitungen

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): CH FR GB LI

RAX Requested extension states of the european patent have changed

Free format text: LT;LV;SI

RBV Designated contracting states (corrected)

Designated state(s): CH FR GB LI

REG Reference to a national code

Ref country code: DE

Ref legal event code: 8566

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): CH FR GB LI

AX Request for extension of the european patent

Free format text: LT;LV;SI

17P Request for examination filed

Effective date: 19970912

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

17Q First examination report despatched

Effective date: 20000313

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN

18W Application withdrawn

Withdrawal date: 20000621