EP1600602A2 - Dispositif et procédé pour le forage hydraulique - Google Patents

Dispositif et procédé pour le forage hydraulique Download PDF

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Publication number
EP1600602A2
EP1600602A2 EP05010058A EP05010058A EP1600602A2 EP 1600602 A2 EP1600602 A2 EP 1600602A2 EP 05010058 A EP05010058 A EP 05010058A EP 05010058 A EP05010058 A EP 05010058A EP 1600602 A2 EP1600602 A2 EP 1600602A2
Authority
EP
European Patent Office
Prior art keywords
tubular body
liquid
jet
pivot arm
bore
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
EP05010058A
Other languages
German (de)
English (en)
Other versions
EP1600602A3 (fr
EP1600602B1 (fr
Inventor
Dominik Hartmann
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.)
Bauer Spezialtiefbau GmbH
Original Assignee
Bauer Spezialtiefbau GmbH
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 Bauer Spezialtiefbau GmbH filed Critical Bauer Spezialtiefbau GmbH
Publication of EP1600602A2 publication Critical patent/EP1600602A2/fr
Publication of EP1600602A3 publication Critical patent/EP1600602A3/fr
Application granted granted Critical
Publication of EP1600602B1 publication Critical patent/EP1600602B1/fr
Active 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
    • E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
    • E21B43/29—Obtaining a slurry of minerals, e.g. by using nozzles
    • E21B43/292—Obtaining a slurry of minerals, e.g. by using nozzles using steerable or laterally extendable nozzles
    • 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

Definitions

  • the invention relates to a device and a method for working the soil.
  • a drill head points a surrounding duct on, at the end radially outwardly hinged pivot arms, which in the Rest position rest in recesses of the drill head. Becomes a drilling fluid is introduced under high pressure into the duct, the arms are unfolded.
  • DE 2 035 934 discloses a hydraulic-pneumatic method for removing a solid wall in liquids disclosed. To reduce the density is at the mining site injected gas into the surrounding liquid.
  • the object of the invention is to provide a device and a method with which soil material of certain soil layers can be processed efficiently.
  • At least one pivoting arm is arranged with a jet pipe at a bottom end of the tubular body, which is movable from a rest position on the tubular body in a Ausstellposition in which the pivot arm projects laterally on the tubular body, and that for generating a liquid cutting jet, the jet pipe opens substantially straight into a jet nozzle.
  • Due to the swivel cutting beam arm can be shown in a defined soil layer within the soil through a cutting jet soil material targeted solved and processed become. For the exhibition of the swivel arm this can not only pivotable but also for example telescopic be extendable.
  • a basic idea of the invention is due to the arrangement of a substantially straight, long Beam tube, which opens straight into the jet nozzle. In contrast to nozzles inserted transversely into a pipe leads a jet pipe with a length of at least 10 cm a precise, highly effective cutting jet.
  • the pivot arm suitably in a lower, bottom-side Area of the tubular body is arranged can on the one hand in a rest position on him supporting tubular body to be brought.
  • the swivel arm lie flat against the green body, in a receiving recess provided on the outside of the tubular body be included or arranged inside the tubular body be.
  • the swivel arm forms in the Rest position with the tubular body a continuous surface.
  • the longitudinal axis of the swivel arm approximately parallel to the longitudinal axis of the tubular body be arranged.
  • a fluid passage through to lock the swivel arm it may be advantageous to have a fluid passage through to lock the swivel arm. It may be useful, too in the rest position of the arm a fluid passage to provide thereby, wherein a generated liquid jet then, for example, a propulsion of the tubular body can assist in the soil.
  • the pivot arm From the rest position on the tubular body of the swivel arm according to the invention is pivotable in a Ausstellposition in which it protrudes laterally from the tubular body.
  • the longitudinal axis of the pivot arm with the longitudinal axis of the tubular body in the deployed position ⁇ include a deployment angle, which is suitably 45 ° to 120 °, in particular about 90 °.
  • the pivot arm can be released for a fluid passage and thereby at least approximately radially directed to the tubular body liquid jet can be generated.
  • the swivel arm of the liquid jet occurs only at a certain radial distance from the tubular body, which is why a particularly high range of the liquid jet is achieved in the soil and thus a particularly large mining area can be edited.
  • the Ausstellposition can also be provided at least one intermediate position of the pivot arm, in which the fluid passage can be released or locked.
  • the at least one Schwenkarmdüse for Generating the liquid jet so the front side of the swing arm arranged that the generated liquid jet at least approximately in the longitudinal direction of the pivoting arm, i. is directed parallel to its longitudinal axis.
  • the front side emerges from the arm, which are at the exit of the Fluid from the swing arm occurring reaction forces also mainly in the longitudinal direction of the swivel arm directed and thus can be particularly well received by this become.
  • reaction forces in the pivoting direction of the pivot arm whereby a pivot drive of the swing arm is relieved.
  • the design of the swivel arm for an approximately longitudinal Fluid jet thus allows the use of extra high liquid pressures for liquid jet generation, thus a particularly high beam range and a particularly large mining area.
  • the pivot drive For pivoting the swivel arm between the Ausstellposition and the rest position, the pivot drive basically both bottom side of the tubular body, in particular near the swivel arm, as well as on the top side of the tubular body, i.e. near its end spaced from the bottom end, be arranged.
  • the rotary actuator can, for example at least one hydraulic cylinder and / or at least have a pneumatic cylinder, in particular can be articulated directly on the swivel arm.
  • the pivot drive at least one drive rod which are parallel to the longitudinal axis of the Pipe body runs upwards.
  • the rotary actuator can in particular axially displaceable, suitably have concentrically arranged tubes, of which in particular may be one of the tubular body.
  • the rotary actuator can also be a rotary gear, a rotary motor and / or have a rack with pinion. advantageously, is the swivel drive from, from above controllable. If provided a hydraulic rotary actuator is, hydraulic lines can be provided, the in the tube body upwards. In a pneumatic Part-turn actuators can be used in accordance with pneumatic lines Be provided tubular body.
  • the jet pipe is advantageously straight, i. with straighter Longitudinal axis executed.
  • Jet pipe in particular with approximately circular outer cross section executed.
  • the different ones Swivel arms preferably have different lengths, so that the respective Schwenkarmdüsen in Ausstellposition different have radial distances from the tubular body.
  • the at least one Swing arm a length of about 50 cm to 4 m, in particular has a length of about 2 m, with much of the Length is formed by the jet pipe.
  • At least one pre-cutting device for producing a further pre-cutting liquid jet is provided on the tubular body, in particular above the swivel arm.
  • This pre-cutting device can be offset by, for example, 180 ° to Be arranged swivel arm.
  • the pre-cutting area is dimensioned in this way, that the pivot arm is received therein in its raised position can be. This will be a particularly simple and little forceful swinging the swing arm in Floor in the raised position allows.
  • the suitably Pre-cutting device arranged outside of the tubular body may have a Vorschneidüse, in particular arranged directly on the outer wall of the tubular body can be.
  • the pre-cutting nozzle can also be used on a pre-cutting pipe be arranged radially out of the tubular body protrudes.
  • the pre-cutting tube a shorter length than the swivel arm.
  • the Vorschneide driving is designed so that the Pre-cutting liquid jet approximately radially to the tubular body runs.
  • the arrangement of the pre-cutting device above the Swing arm may in particular include that the pre-cutting nozzle and thus the exit point of the further precut liquid jet above the swivel arm nozzle is arranged.
  • Such an arrangement is especially then beneficial if the liquid when pulling the tubular body injected into the ground via the pre-cutting device becomes.
  • the liquid in the sense of the method according to the invention can be understood in particular that the liquid first by means of the pre-cutting and then injected additionally or alternatively by means of the swivel arm becomes.
  • a particularly advantageous embodiment of the invention Device is characterized in that the outside on the tubular body, in particular above the pivoting arm and / or the pre-cutting device, at least one Centering device for centering the tubular body in Borehole is provided.
  • a configured device is designed to absorb reaction forces when exiting the liquid jet arise, particularly well suited.
  • the training thus allows the use of special high liquid pressures and thus very high Ray ranges.
  • the centering device suitably a spacer radially from the tubular body protrudes, and the tube body on the borehole wall supported.
  • a centering device can in particular then be provided if compared with the tubular body larger diameter borehole prior to introduction of the Pipe body in the ground by means of a drilling tool or Cutting beam is produced.
  • a particularly useful device is further characterized characterized in that the swivel arm an elastic line provided for supplying the Schwenkarmdüse with liquid is.
  • This elastic line is suitably in Inside of the tubular body arranged where they are particularly good protected by the pending soil.
  • Alternatively or in addition to the elastic line can supply the Schwenkarmdüse also a hinge connection and / or a deflection connection be provided.
  • the line connects in a single arc the pipe body with the jet pipe, so that only a small pressure loss arises.
  • a particularly reliable device can thereby be obtained be that a position sensor for determining the Pivoting position of the pivot arm is provided, wherein the Position sensor, in particular with a control device connected, with which a liquid supply is controllable by means of a pump for Schwenkarmdüse.
  • the Control means is suitably at the top of the tubular body intended.
  • the position sensor can in particular for Determination of the swivel angle ⁇ and / or for detection serve the Ausstellposition.
  • the controller is designed so that the hydration is given to Schwenkarmdüse only if the swivel arm is in the raised position.
  • to Control of the fluid supply may be the controller for example with the pump or with a control valve keep in touch.
  • the device can be used for special civil engineering to create Foundations or for particularly effective extraction of raw materials be used. It may be useful for this that at the bottom surface of a discharge device for Abzu ACn raw material-containing suspension from the tubular body to Tube extraction is provided.
  • the discharge for sucking off suspension formed the borehole.
  • the extraction of raw materials can a separation of the raw material grains from the liquid include.
  • a particularly advantageous device for the degradation of solid mineral raw materials is further characterized that at least one pipe to the pipe body to common or separate supply the Vorschneide driven and the Schwenkarmdüse provided with liquid is.
  • the line provided for common provision is, the Vorschneide driving and / or the Swivel arm preferably have a liquid valve.
  • the line is designed for separate supply, suitably have the pre-cutter and the swing arm separate lines.
  • the at least one line has the elastic line on.
  • the tillage method according to the invention is characterized characterized in that in a first step a hole is made, at least until one to be processed soil layer is enough, and that into the hole the tillage device is introduced, with which soil material of the soil layer is dissolved.
  • a basic idea of the invention can be seen therein by means of the device, a liquid in soil layers bring soil material targeted from the ground is solved. With further supply of liquid is the so solid-enriched liquid displaced from the soil and discharged to the soil surface.
  • the method according to the invention is in addition to Use for special civil engineering also for the dismantling of a multiplicity of solid mineral raw materials.
  • Especially useful is the process for the mining of clay minerals, especially of kaolin. But also other clay minerals such as. Bentonite, talc, smectite or mica can be reduced.
  • clay minerals especially of kaolin.
  • other clay minerals such as. Bentonite, talc, smectite or mica can be reduced.
  • mineral raw materials it can in particular phyllosilicates.
  • the process for the degradation of ceramic raw materials is chosen so that the degraded raw material grains are insoluble therein. It but can also be provided that the raw material grains at least partially soluble in the liquid.
  • a suspension according to the invention in particular a slurry of insoluble solid particles in the liquid be understood.
  • the suspension can also be called Körnersuspension be designated from a conglomerate.
  • the inventive method for the mining of mineral deposits that are located at a depth of approx. 20 to 100 m are stored.
  • the layer thickness of the raw material deposit can be for example 40 m and the Raw material content in the soil approx. 10 to 30% by volume.
  • the invention Method allows in a particularly simple way the Dismantling of such deeper deposits of raw materials without basically a costly Schachtewolf necessary would.
  • the degradation rate basically from the earth's surface into the ground be introduced.
  • the degradation boom starting from a tunnel or a shaft of a To bring civil engineering into the ground.
  • the degradation boom can from the bottom of an open pit into the ground be, thereby increasing the depth of excavation without Diameter enlargement of the mining vessel can be achieved can.
  • the degradation rod according to the invention designed so that the injected fluid has a reach in the radial direction to the degradation boom from 2 to 8 m, in particular of about 10 m, with respect to the longitudinal axis of Has degradation support or an outlet opening.
  • Raw material grains can be found in an approximately cylindrical mining area degraded with a radius of the order of magnitude become.
  • the raw material-containing suspension becomes suitable removed on the outside of the degradation rod. This is especially advantageous if the degradation boom in a bore is introduced, the diameter larger than the degradation string itself is. Basically, it is synonymous possible, the raw material-containing suspension in the interior of the mining line to the top, i. in the direction of the earth's surface.
  • the removal of the raw material-containing suspension along the Degradation rod can basically only due to a displacement effect through which continues to be injected into the ground Liquid done.
  • pumping means may be provided which facilitate the removal support the raw material-containing suspension upwards.
  • a particularly suitable development of the invention Method is characterized in that an injection rate for the liquid is adjusted so that a flow rate of the suspension along the Degradation rate less than a rate of descent undesirable Bad grains is.
  • the sinking rate can as well as the return flow velocity and the flow velocity be referred to as ascending speed.
  • the injection rate i. the per unit time in the ground supplied amount of liquid, that is chosen so that the undesirable Bad grains fall faster than they do be removed above and thus remain in the soil.
  • the bad grains may be in particular Coarse parts act. Basically, it can be at the Bad grains but also other unwanted admixtures and impurities, such as foreign material Commodity additions act. These can be, for example due to a different density or different surface properties one of the Descent rate of desired raw material grains different Falling rate.
  • the injection rate is such is set that grains of raw material with a grain size, which is above a certain maximum particle size, remain in the ground. This can be ensured that only fines are removed from the ground, By contrast, coarse particles remain behind in the ground or back again sink down and one at the mining of raw materials in the mining area support emerging cavity. Be under fines understood raw material grains whose particle size below the largest grain size is.
  • the largest grain size can be in particular 1000 .mu.m, preferably 500 .mu.m.
  • the injection rate for the Liquid adjusted so that the sinking rate of particles with a size above the largest grain size greater than the flow rate of the suspension and the Rate of descent of particles of a size below the largest particle size is smaller than the flow velocity of the Suspension along the degradation boom is. It was recognized that it is at the flow rate and at the sinking rate can be around mean values, so that optionally also a small amount of unwanted unwanted Get bad grains and / or coarse parts up can.
  • the liquid can be chosen arbitrarily.
  • the liquid is around water.
  • An injection rate for the liquid is appropriate 100 to 2500 1 per minute, in particular 400 to 2000 1 per minute.
  • the degradation boom repeatedly lowered and at least partially pulled is, in particular, an outlet characteristic of the Liquid from the degradation boom is changed. hereby becomes a particularly thorough and complete resource extraction guaranteed.
  • the liquid may, for example, at least the shape a cutting beam to be changed. alternative or additionally, the fluid pressure and / or the injection rate will be changed.
  • at least an exit point of the liquid from the degradation boom may change. For example, this may be a first injection nozzle opened for a fluid passage and a second injection nozzle are blocked.
  • for Changing the exit characteristic also includes additional exit points be released to the liquid.
  • a particularly complete extraction of raw materials can according to the invention be achieved by the degradation boom during the injection of the liquid is rotated. hereby In particular, an at least approximately cylindrical Set raw material removal area in the ground. suitably The degradation boom will also turn in during rotation Axial direction moves, in particular pulled. The rotation can be done with the same direction of rotation or alternately.
  • the tubular body and / or the Swing arm via a vibration exciter in vibrations brought.
  • the applied vibrations are preferred in a range between 10 and 100 Hz.
  • the degradation boom directly in the unprocessed soil, and then suitably frontally at the lower end of the mining rod provided a drilling device for releasing the upcoming soil is.
  • a particularly useful method exists However, in that first by means of a drilling tool a preferably at least partially cased borehole in Soil is produced, then in the subsequent degradation boom is introduced. In this case, the hole becomes So not by the mining boom itself, but by the drilling tool or prepared by pre-cutting.
  • the Drilling tool can in particular a drill pipe with have a bottom side arranged drill head.
  • the least partial piping of the bore can in particular be provided in burglary-vulnerable soils.
  • FIG. 1 A device 60 according to the invention with a degradation rod 50 is shown in FIG.
  • the degradation rod 50 has a tubular body 2, which in a borehole 18 is placed in the floor 40. face side is arranged on the tubular body 2, a drilling device 3, the For example, as a drill bit, as a drill head and / or as Displacer can be formed.
  • the drilling device 3 is not mandatory in all cases.
  • the swivel arm is in an open position, at reference numeral 8a in a rest position on Tube body 2 shown. While in the resting position a Longitudinal axis of the pivot arm 9 approximately parallel to a longitudinal axis 26 of the tubular body 2 extends, closes the longitudinal axis of the pivot arm 9 in the Ausstellposition with the Longitudinal axis 26 of the tubular body 2 a pivot angle ⁇ of 90 °.
  • the pivot arm 9 For pivoting the pivot arm 9 is at a pivot axis 13 hinged.
  • the pivot axis 13 extends approximately radially to the longitudinal axis 26 of the tubular body 2.
  • the degradation rod 50 has a rotary actuator with a hydraulic cylinder 11 on one side is hinged to the tubular body 2.
  • piston-side Side is the hydraulic cylinder 11 at one rearward lever arm 14 of the pivot arm 9 beyond the Pivot axis 13 attached.
  • the hydraulic cylinder 11 For swinging out the swivel arm 9, the hydraulic cylinder 11 is extended, whereby the swing arm 9 with the Schwenkarmdüse 10, as with the interrupted Arrow shown, in a circular path to the top is swung.
  • a pre-cutter 46 is provided above the pivot arm 9 is on the outside of the tubular body. 2 .
  • the pre-cutting device 46 has a radial to the longitudinal axis 26 of the tubular body 2 extending Vorschneiderohr 6, on the front side a Vorschneidüse 7 is arranged.
  • Swing arm 9 With swung out Swing arm 9, i. in the presence of the display position, is the Schwenkarmdüse 10 radially further from the Longitudinal axis 26 of the tubular body 2 spaced as the Vorschneidüse 7.
  • a first line 4 arranged.
  • This line 4 is over as Hose piece running elastic line 12 with the relative long, straight jet pipe 8 connected.
  • liquid, especially water introduced in the direction of arrow 16 in the line 4.
  • a second conduit 5 for the supply of liquid to the pre-cutting device 46 forms. Will be in this second line 5 liquid supplied in the direction of arrow 15, so comes out the Vorschneidüse 7 a in Fig. 1, not shown Pre-cutting liquid jet off.
  • the length of Vorschneiderohrs 6 is chosen so that these is smaller than a borehole radius 23 of the borehole 18 and the degradation rod 50 thus unhindered in the borehole 18th can be introduced.
  • the rough cutting area radius 24 is suitably chosen so that in Vorschneide Scheme 34 a pivoting of the pivot arm 9 in the raised position is possible, i. the roughing area radius 24 will suitably be greater than a radial distance the Schwenkarmdüse 10 from the longitudinal axis 26 of the tubular body 2 elected.
  • the drilling device 3 can in particular be designed in this way be that they on the swing arm 9 in its rest position protrudes in the radial direction and thus before pending Soil protects.
  • FIG. 1 Different process stages of an embodiment a method according to the invention using the in Fig. 1 illustrated mining rod 50 are shown in Figs. 2 to 6 shown.
  • a first step of the illustrated method is by means of a drilling tool, not shown in the ground 40 first drilled down a well 18 to a final depth 38.
  • the hole 18 can thereby be formed cased in an upper area.
  • the Drill hole 18 becomes larger in diameter than the tube body 2 designed that this with the radially projecting Pre-cutting device 46 with pivoted swivel arm 9 in a next step unimpeded centric in the borehole 18 are inserted and lowered therein can.
  • the tubular body 2 After the inserted tubular body 2 with its bottom side arranged drilling device 3 at the bottom of the borehole 18 rests, the tubular body 2 is initially as long as pushed into the ground until the pre-cutting device 46 is located just above the final depth 38.
  • the drilling device 3 at the bottom of the hole in particular generated by a rotation of the tubular body 2 can be, is here in the middle and smaller diameter to the borehole 18 generates a feed hole 31.
  • liquid via the line 4 to the pivoted Swivel arm 14 are supplied, wherein the liquid then near the drilling device 3 from the Schwenkarmdüse 10 stands out.
  • the tubular body 2 is then without further fluid as long as pushed back into the ground until the issued swing arm 9 reaches about the final depth 38 Has. To facilitate the feed of the tubular body. 2 thereby also be turned. Subsequently, both the Vorschneide recognized 46 and the jet pipe 8 liquid fed under pressure, resulting in the Vorschneide liked 46 again the precut liquid jet 43 and the jet pipe 8, a liquid jet 41st established. At the same time, the tubular body 2 is returned to Rotation offset and pulled in the axial direction. This process stage is shown in Fig. 5.

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (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)
  • Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
  • Earth Drilling (AREA)
  • Drilling And Boring (AREA)
EP05010058A 2004-05-28 2005-05-09 Dispositif et procédé pour le forage hydraulique Active EP1600602B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004026234 2004-05-28
DE102004026234A DE102004026234B3 (de) 2004-05-28 2004-05-28 Vorrichtung und Verfahren zur Bearbeitung des Bodens

Publications (3)

Publication Number Publication Date
EP1600602A2 true EP1600602A2 (fr) 2005-11-30
EP1600602A3 EP1600602A3 (fr) 2006-03-01
EP1600602B1 EP1600602B1 (fr) 2006-12-27

Family

ID=34936299

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05010058A Active EP1600602B1 (fr) 2004-05-28 2005-05-09 Dispositif et procédé pour le forage hydraulique

Country Status (3)

Country Link
EP (1) EP1600602B1 (fr)
AT (1) ATE349599T1 (fr)
DE (2) DE102004026234B3 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008056261B4 (de) * 2008-11-06 2011-06-16 Bauer Spezialtiefbau Gmbh Ventilzentrierung

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2217360A (en) * 1938-05-18 1940-10-08 Shell Dev Hydraulic disruption of solids
US5181578A (en) * 1991-11-08 1993-01-26 Lawler O Wayne Wellbore mineral jetting tool
US5363927A (en) * 1993-09-27 1994-11-15 Frank Robert C Apparatus and method for hydraulic drilling

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2035934A1 (de) * 1970-07-20 1972-02-03 Dedegil, Yavuz, Dipl.-Ing.; Weber, Manfred, Dr.-Ing.; 7500 Karlsruhe Hydraulisch-pneumatisches Verfahren zum Abtragen oder Abbauen von Feststoffen unter Wasser oder sonstigen Flüssigkeiten

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2217360A (en) * 1938-05-18 1940-10-08 Shell Dev Hydraulic disruption of solids
US5181578A (en) * 1991-11-08 1993-01-26 Lawler O Wayne Wellbore mineral jetting tool
US5363927A (en) * 1993-09-27 1994-11-15 Frank Robert C Apparatus and method for hydraulic drilling

Also Published As

Publication number Publication date
DE102004026234B3 (de) 2005-10-06
EP1600602A3 (fr) 2006-03-01
DE502005000254D1 (de) 2007-02-08
EP1600602B1 (fr) 2006-12-27
ATE349599T1 (de) 2007-01-15

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