EP0819819A1 - Tête de fraisage, dispositif de forage et procédé de forage sous-marin - Google Patents

Tête de fraisage, dispositif de forage et procédé de forage sous-marin Download PDF

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Publication number
EP0819819A1
EP0819819A1 EP97112092A EP97112092A EP0819819A1 EP 0819819 A1 EP0819819 A1 EP 0819819A1 EP 97112092 A EP97112092 A EP 97112092A EP 97112092 A EP97112092 A EP 97112092A EP 0819819 A1 EP0819819 A1 EP 0819819A1
Authority
EP
European Patent Office
Prior art keywords
drilling
milling head
seabed
tube
ship
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
EP97112092A
Other languages
German (de)
English (en)
Other versions
EP0819819B1 (fr
Inventor
Leonhard Weixler
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 Maschinen 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
Priority claimed from DE19635916A external-priority patent/DE19635916A1/de
Application filed by Bauer Spezialtiefbau GmbH filed Critical Bauer Spezialtiefbau GmbH
Publication of EP0819819A1 publication Critical patent/EP0819819A1/fr
Application granted granted Critical
Publication of EP0819819B1 publication Critical patent/EP0819819B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/88—Dredgers; Soil-shifting machines mechanically-driven with arrangements acting by a sucking or forcing effect, e.g. suction dredgers
    • E02F3/90—Component parts, e.g. arrangement or adaptation of pumps
    • E02F3/92—Digging elements, e.g. suction heads
    • E02F3/9212—Mechanical digging means, e.g. suction wheels, i.e. wheel with a suction inlet attached behind the wheel
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/88—Dredgers; Soil-shifting machines mechanically-driven with arrangements acting by a sucking or forcing effect, e.g. suction dredgers
    • E02F3/90—Component parts, e.g. arrangement or adaptation of pumps
    • E02F3/905—Manipulating or supporting suction pipes or ladders; Mechanical supports or floaters therefor; pipe joints for suction 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
    • E21B10/00—Drill bits
    • E21B10/08—Roller bits
    • E21B10/12—Roller bits with discs cutters
    • 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
    • E21B10/00—Drill bits
    • E21B10/08—Roller bits
    • E21B10/16—Roller bits characterised by tooth form or arrangement
    • 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
    • E21B19/002—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables specially adapted for underwater 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
    • E21B49/00—Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells
    • E21B49/02—Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells by mechanically taking samples of the soil
    • E21B49/025—Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells by mechanically taking samples of the soil of underwater soil, e.g. with grab devices
    • 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
    • E21B7/12—Underwater drilling
    • E21B7/128—Underwater drilling from floating support with independent underwater anchored guide base

Definitions

  • the invention relates to a milling head for earth bores, a Drilling device for soil exploration, as well as a seabed drilling device and a method of drilling the seabed, which are used in soil exploration to make soil samples from a defined depth below the drilling surface to collect.
  • Trench wall cutters are known for earth drilling, which have two offset cutting wheel pairs parallel to the axis, which rotate in opposite directions on horizontal axes, so that the loosened soil in the space between the two Wheels are conveyed where there is a suction device is transported upwards.
  • These trench cutters have a large-volume frame structure and are very heavy.
  • the drilling cross section is rectangular.
  • To support the The borehole must have a supporting liquid, for example that which is known as bentonite, in the borehole be filled in.
  • Such trench cutters are not suitable for exploring the ground very suitable as the support fluid to the bottom of the drill is present and there with the drilled soil mixed. A neat analysis of the composition of the Drilled soil is no longer possible.
  • the drill cross sections are unnecessarily large and the rectangular ones Drill cross-sectional shape has only moderate inherent stability of depth.
  • Trench wall cutters of this type are also used by one Supply vessel for ground exploration below sea level used.
  • the maximum achievable Limited drilling depth Seabed exploration such as diamond mining or finding other rare Materials are therefore often used with scrapers carried out.
  • this procedure is very imprecise and not particularly powerful.
  • the invention has for its object to provide a milling head, a drilling device and a seabed drilling device, and to provide a method for drilling the seabed, which enable efficient soil exploration to great depths and even with hard base material.
  • the task is characterized by the characteristics of the Part of claim 1 with respect to the milling head Claim 7 with respect to the drilling device, the claim 11 regarding the seabed drilling device and claim 16 with respect to the method for Seabed drilling solved.
  • Advantageous embodiments are described in the subclaims.
  • the drilling device according to the invention provides a drilling sample which accurately reproduces the depth and the amount of the individual material work.
  • An approximately round drilling cross-section achieves very stable conditions in the borehole.
  • the borehole wall area is minimal in relation to the borehole volume. Accordingly, a high level of performance, ie a high yield of conveyed milling material, is achieved in the borehole shape according to the invention.
  • the drilling device can also be used on land, it is particularly suitable for use as a seabed drilling device.
  • a very good drilling result is achieved when the milling head is designed as a full cut milling head.
  • the milling head is advantageously made of rotating in opposite directions frustoconical cutting wheels formed. Through this A circular drilling cross-section can very well build up can be achieved. At the same time, the drill head has a very high drilling performance.
  • the comminuted milling material is suitably separated by a Suction box can be extracted via a suction line.
  • a drilling device has a Milling head a tube with a roughly the same cross section corresponding cross section.
  • seabed drilling device An advantageous use of the seabed drilling device is by mounting on a ship with one over a work tower arranged amidships arranged opening guaranteed.
  • the lowerable part of the seabed drilling rig which mainly comes from the milling head, the worktable and the pipe is through that Opening retractable and extendable.
  • the work tower it can hoisted pipe securely attached in a vertical orientation will.
  • the vertical alignment can be carried out in a particularly advantageous manner of the pipe are taken over by the guide part, if the rope is held steadily with a relatively high tension becomes.
  • the work table relatively high due to its high weight exposed to upward forces without being in its alignment to be affected.
  • unneeded material can be cut via the bypass valve removed from the suction line at the top of the pipe without being pumped up to the supply ship have to.
  • the drill head is secured by the pipe throughout the operation with large amounts of trailing sea water as rinse water supplied for milling operation.
  • Figure 1 shows a milling head 1 with an approximately round cross-section.
  • the milling head 1 is made of four pairs in opposite directions revolving frustoconical cutting wheels 2 formed, which are stored in pairs via two gear shields 6 are.
  • the radii of the truncated cones are from the axial center of the milling head 1 starting smaller in the axial direction.
  • the axially outer milling wheels 2 have a smaller one Diameter than the inner cutting wheels 2.
  • the drive motors (not shown) are above the cutting wheels 2.
  • the gear shields 6 are on one Frame 7 attached, which at the end of a tube 12 (Fig. 3) are attached.
  • the milling wheels 2 run in pairs in opposite directions, since each two cutter wheels 2 driven by a gear are, as shown in EP 0 167 090.
  • An emerging torque around the drilling axis is caused by the firm locking of the tube 12 in the circumferential direction in the Depth compensated.
  • On the circumference of the cutting wheels 2 are in the circumferential direction evenly spaced Milling teeth 5 formed, which the area of effect of Milling head 1 except for the boundary line dashed in Figure 1 8 enlarge.
  • FIG. 2 also shows a scraper plate 4, which crushes the milled material to a defined maximum grain size.
  • the milled material is through a suction box 3 and Suction line 28 aspirated.
  • a ship 11 is used as a surface-water operations control device provided that a work tower amidships 16 carries, which over an opening 18 in Longstrip is arranged. Through this opening 18 can the lowerable portion of the ocean floor drilling rig, which mainly from the milling head 1 (not shown), the tube 12 and a work table 13, on one Rope 26 can be lowered.
  • Figure 3 shows this part in Rest position and in working position, namely both in the raised position Position, the tube 12 in a vertical orientation is fixed in the work tower 16, as well as in lowered Position, the tube 12 through a follow-up system 14 relative to the work table 13 to the maximum drilling depth is pushed down.
  • the follow-up system 14 consists of hydraulically driven and in the radial direction and in the axial direction of the tube 12 adjustable brackets. These grip the circumference of the tube 12 and move it in the axial direction.
  • the brackets are counteracted with the hydraulic drive in the radial direction the tube 12 pressed so that it is displaceable on the circumference of the tube 12 abut.
  • the brackets are about evenly distributed over the pipe circumference, so that no resulting Radial moment on tube 12 works.
  • the clamps are used to move the tube 12 hydraulically driven in the axial direction of the tube 12, taking the tube 12 with it and relative to it Move work table 13.
  • the brackets loosen when reaching the maximum stroke in the axial direction of the Tube 12 will then be in the opposite direction retracted and then take the tube 12 again by moving in a radial direction. Then take the clamps the tube 12 in turn in the desired direction of movement With.
  • the tube 12 has a the drilling diameter of the milling head 1 corresponding diameter. Serves during drilling operations via the follow-up system from the work table 13 to the pipe 12 transmitted force in the axial direction of the tube 12 as Feeding force for the milling head 1. Especially when drilling the seabed leads the pipe 12 to improved drilling conditions, because the depth is due to the highly flowable components of the sea floor always exposed to danger is to be buried. Since the tube 12 has no protrusions has and is relatively smooth-walled, its introduction into the depths with relatively little effort possible. Through the tube 12, the milling head 1 is on a kept straight drilling direction. This makes it possible test drilling in precisely defined areas. The milling head 1 and the tube 12 are firmly connected. The tube 12 thus also fulfills a supporting function for the milling head 1.
  • the pipe cross-section is about circular drilling cross section of the milling head 1 adapted. This cross-sectional shape ensures the stability of the pipe 12 very high against indentation or bending.
  • a bypass valve 15 through which unneeded milled material from the suction line 28 can be pumped out.
  • this bypass valve 15 it is possible, for example, to cut the milled material the first section of the hole has been drilled out and only the milled material from a greater drilling depth comes to convey up to ship 11.
  • the tube 12 with the milling head 1 through Follow-up system 14 pulled up relative to the work table 13 again.
  • Typical withdrawal forces correspond to the order of magnitude from 500 to 1000 tons. However, these are not included in the Rope 26 initiated between ship 11 and work table 13. Only after the tube 12 is completely relative to the work table 13 has been pulled up, the rope 26 by one recovery winch 25 on the ship side (see FIG. 6) rolled up.
  • Figures 4 and 5 show the tube 12, on the lower End of the milling head 1 is (not shown).
  • the Tube 12 is via the follow-up system 14 with the work table 13 connected.
  • the pipe diameter is typically around 2 Meters, the pipe length a maximum of about 30 meters.
  • the weight the work table 13 is 120 tons. However, there are larger dimensions can also be implemented.
  • the work table 13 and the tube 12 are via a gimbal 27 connected to one another even with sloping seabed to be able to drill vertically.
  • a hydraulic line 20 and the suction line 28 run from the milling head 1 from upwards inside the tube 12, at the upper end the tube 12 out of this, then parallel to the tube 12th down to deflection devices, which are off at the work table 13 attached pulleys 17 exist, and then further up to the ship 11.
  • the tube 12 also forms one Flushing water line for the flushing water supply to the milling head 1.
  • Inside the tube 12 and on the semicircular Deflection parts at the top of the pipe are the hydraulic line 20 and the suction line 28 designed as metal pipes, because they do not have to be twistable there.
  • the rope 26 runs from the ship's side Recovery thread 25 on a role on a ship side Work tower upper part 23 through an opening of the guide part 24 to two roles on the work table 13, then again through the guide part 24 to the ship's side Work tower upper part 23, then again to the work table 13 and finally back to the upper part of the work tower 23, on which the rope end is fixed.
  • the device in FIG a water depth of up to about 200 to 300 meters this The distance then corresponds approximately to the distance between the ship-side work tower upper part 23 and the guide part 24th
  • the guide part 24 is relative in its height setting adjustable to the tube 12 by means of the height adjustment 30.
  • the height adjustment 30 serves to guide the guide part 24 tube 12 completely raised into the work tower 16 lower.
  • the tube 12 protrudes in a fully raised position Condition the height of the work tower 16 and thus also the height of the ship-side upper part of the tower 23, so that the guide member 24 no longer at the upper end of the Tube 12 can be located.
  • the height adjustment 30 consists of two diametrically oppositely arranged deflection rollers 31 on the upper Edge of the tube 12.
  • the ship 11 drives over a part of the seabed that explores shall be.
  • the seabed drilling device is in motion pulled up and is in work tower 16.
  • the work table 13 is located during this process at the lower end of the tube 12. He arrives first on the sea floor and takes due to its high weight, a stable alignment a.
  • the rope 26 runs on the tube 12 through the Guide part 24, which after the tube 12 the work tower 16 left had moved to the top of the tube 12 has been. This is due to the relatively tight rope 26 a vertical alignment of the tube 12 through the Guide part 24 guaranteed.
  • the rope 26 can be relative be very excited without the heavy work table 13 takes off. An uneven seabed can be sloping despite overlying work table 13 a vertical orientation of the Tube 12 can be maintained because these two parts with the gimbal 27 are connected.
  • the Milling wheels 2 rotate against each other in pairs.
  • the Milled material is gripped by the milling teeth 5 and by the Scraper plates 4 crushed.
  • the shredded milled material is sucked through the suction box 3 and through the suction line 28 and transported up to the ship 11. It is caught there and analyzed.
  • the drilling feed of the milling head 1 is through the follow-up system 14 accomplished on the work table 13, which the tube 12 corresponding to the drilling rate down shifts.
  • the hydraulic line 20 drive energy to the milling head 1 and Sea water supplied for rinsing through the tube 12.
  • Optional can be a part of the milled material through the bypass valve 15 on removed the upper end of the tube 12 from the suction line 28 without having to be carried up to ship 11.
  • the maximum drilling depth is due to the length of the tube 12 fixed.
  • the tube 12 from the Nachfbersystem 14 on his detected at the upper end, the maximum drilling depth is reached and the tube 12 is moved upwards again by the follow-up system 14.
  • the lowerable part of the seabed drilling rig from the rope 26 back to the ship 11 in the Work tower 16 pulled up.
  • the drilling process is finished and the ship 11 can leave the drilling site again.
EP97112092A 1996-07-16 1997-07-15 Tête de fraisage, dispositif de forage et procédé de forage sous-marin Expired - Lifetime EP0819819B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE19628661 1996-07-16
DE19628661 1996-07-16
DE19635916 1996-09-04
DE19635916A DE19635916A1 (de) 1996-07-16 1996-09-04 Fräskopf, Bohrvorrichtung sowie Vorrichtung und Verfahren zum Meeresbodenbohren

Publications (2)

Publication Number Publication Date
EP0819819A1 true EP0819819A1 (fr) 1998-01-21
EP0819819B1 EP0819819B1 (fr) 2003-10-01

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EP97112092A Expired - Lifetime EP0819819B1 (fr) 1996-07-16 1997-07-15 Tête de fraisage, dispositif de forage et procédé de forage sous-marin

Country Status (4)

Country Link
US (1) US5931235A (fr)
EP (1) EP0819819B1 (fr)
AU (1) AU2868497A (fr)
CA (1) CA2210442C (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10243747A1 (de) * 2002-09-20 2004-04-15 Bauer Maschinen Gmbh Verfahren und Vorrichtung zum Abbau von Bodenmaterial
DE102005017093B4 (de) * 2004-08-12 2008-07-24 Bauer Maschinen Gmbh Fräse und Verfahren zur Bearbeitung des Erdbodens
EP2251491A1 (fr) * 2009-05-15 2010-11-17 BAUER Maschinen GmbH Dispositif de fraisage et procédé de dépôt de matériau de sol
CN102220841A (zh) * 2011-05-23 2011-10-19 中国地质大学（武汉） 一种海底取样钻机

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060016621A1 (en) * 2004-06-09 2006-01-26 Placer Dome Technical Services Limited Method and system for deep sea drilling
DE502004005270D1 (de) 2004-08-10 2007-11-29 Bauer Maschinen Gmbh Fräsvorrichtung und Verfahren zum Erstellen eines Fräslochs
ES2294410T3 (es) * 2004-08-12 2008-04-01 Bauer Maschinen Gmbh Metodo y dispositivo par trabajar el suelo.
US8935864B2 (en) 2010-08-13 2015-01-20 Deep Reach Technology, Inc. Subsea excavation systems and methods
US9044812B2 (en) 2011-08-03 2015-06-02 General Electric Company Jig and method for modifying casing in turbine system
CN107063741B (zh) * 2017-03-31 2023-06-06 中国地质调查局南京地质调查中心 一种原状土壤取样装置

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Publication number Priority date Publication date Assignee Title
US1749344A (en) * 1926-12-15 1930-03-04 Frederic W Hild Disk bit
FR1304215A (fr) * 1961-09-08 1962-09-21 California Research Corp Procédé et appareil de forage des exploitations de puits en mer
FR1597431A (fr) * 1968-08-07 1970-06-29
DE2044499A1 (de) * 1969-09-10 1971-03-11 Shell Internationale Research Maat schappij N V , Den Haag (Niederlande) Verfahren und Einrichtung zum Ausfuhren von Arbeiten unter der Ober flache eines Gewässers
FR2444787A1 (fr) * 1978-12-22 1980-07-18 Inst Francais Du Petrole Dispositif a conduite flexible permettant d'effectuer des operations de forage, de carottage et des mesures in situ dans les fonds sous-marins
US4273471A (en) * 1979-06-13 1981-06-16 Chevron Research Company Marine-drilling sub-base assembly for a soft-bottom foundation
EP0159801A1 (fr) * 1984-03-19 1985-10-30 Inco Limited Trépan sphérique
EP0167090A2 (fr) 1984-07-06 1986-01-08 Bauer Spezialtiefbau GmbH Appareil excavateur à roues pour creuser des tranchées d'étanchéité
CH653742A5 (en) * 1981-06-17 1986-01-15 Hannelore Bechem Unit for drilling rock, with a drilling head having percussive, radially vibrating drilling tools
FR2578876A1 (fr) * 1985-03-15 1986-09-19 Tone Boring Co Excavatrice de tranchee
GB2208673A (en) * 1984-06-29 1989-04-12 Spiral Drilling Systems Inc Rotary drag drill bit
GB2231601A (en) * 1989-06-22 1990-11-21 Bilfinger Berger Bau Extracting and conveying a layer of material which is underwater

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US1391626A (en) * 1920-04-27 1921-09-20 Richard J Bequette Drill-head for well-driling apparatus
US1747908A (en) * 1923-08-11 1930-02-18 Universal Rotary Bit Company Rotary drill bit
US1524776A (en) * 1923-10-08 1925-02-03 Frederick W Boland Deep-well rotary drill
US1826059A (en) * 1927-09-07 1931-10-06 Dunn William Tracy Drilling head
US2021219A (en) * 1931-06-29 1935-11-19 United Shoe Machinery Corp Clicking machine
US2049543A (en) * 1935-07-12 1936-08-04 Archer W Kammerer Well bit
US4049067A (en) * 1975-11-05 1977-09-20 Ingersoll-Rand Company Cutter mounting extension apparatus
FR2574847B1 (fr) * 1984-12-13 1987-01-16 Soletanche Dispositif pour effectuer des forages circulaires de grand diametre dans le sol

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1749344A (en) * 1926-12-15 1930-03-04 Frederic W Hild Disk bit
FR1304215A (fr) * 1961-09-08 1962-09-21 California Research Corp Procédé et appareil de forage des exploitations de puits en mer
FR1597431A (fr) * 1968-08-07 1970-06-29
DE2044499A1 (de) * 1969-09-10 1971-03-11 Shell Internationale Research Maat schappij N V , Den Haag (Niederlande) Verfahren und Einrichtung zum Ausfuhren von Arbeiten unter der Ober flache eines Gewässers
FR2444787A1 (fr) * 1978-12-22 1980-07-18 Inst Francais Du Petrole Dispositif a conduite flexible permettant d'effectuer des operations de forage, de carottage et des mesures in situ dans les fonds sous-marins
US4273471A (en) * 1979-06-13 1981-06-16 Chevron Research Company Marine-drilling sub-base assembly for a soft-bottom foundation
CH653742A5 (en) * 1981-06-17 1986-01-15 Hannelore Bechem Unit for drilling rock, with a drilling head having percussive, radially vibrating drilling tools
EP0159801A1 (fr) * 1984-03-19 1985-10-30 Inco Limited Trépan sphérique
GB2208673A (en) * 1984-06-29 1989-04-12 Spiral Drilling Systems Inc Rotary drag drill bit
EP0167090A2 (fr) 1984-07-06 1986-01-08 Bauer Spezialtiefbau GmbH Appareil excavateur à roues pour creuser des tranchées d'étanchéité
FR2578876A1 (fr) * 1985-03-15 1986-09-19 Tone Boring Co Excavatrice de tranchee
GB2231601A (en) * 1989-06-22 1990-11-21 Bilfinger Berger Bau Extracting and conveying a layer of material which is underwater

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10243747A1 (de) * 2002-09-20 2004-04-15 Bauer Maschinen Gmbh Verfahren und Vorrichtung zum Abbau von Bodenmaterial
DE10243747B4 (de) * 2002-09-20 2004-07-29 Bauer Maschinen Gmbh Verfahren und Vorrichtung zum Abbau von Bodenmaterial
DE102005017093B4 (de) * 2004-08-12 2008-07-24 Bauer Maschinen Gmbh Fräse und Verfahren zur Bearbeitung des Erdbodens
EP2251491A1 (fr) * 2009-05-15 2010-11-17 BAUER Maschinen GmbH Dispositif de fraisage et procédé de dépôt de matériau de sol
CN102220841A (zh) * 2011-05-23 2011-10-19 中国地质大学（武汉） 一种海底取样钻机
CN102220841B (zh) * 2011-05-23 2012-12-26 中国地质大学（武汉） 一种海底取样钻机

Also Published As

Publication number Publication date
EP0819819B1 (fr) 2003-10-01
CA2210442C (fr) 2004-05-04
AU2868497A (en) 1998-01-22
US5931235A (en) 1999-08-03
CA2210442A1 (fr) 1998-01-16

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