EP0819819B1 - Fräskopf, Bohrvorrichtung sowie Vorrichtung und Verfahren zum Meeresbodenbohren - Google Patents
Fräskopf, Bohrvorrichtung sowie Vorrichtung und Verfahren zum Meeresbodenbohren Download PDFInfo
- Publication number
- EP0819819B1 EP0819819B1 EP97112092A EP97112092A EP0819819B1 EP 0819819 B1 EP0819819 B1 EP 0819819B1 EP 97112092 A EP97112092 A EP 97112092A EP 97112092 A EP97112092 A EP 97112092A EP 0819819 B1 EP0819819 B1 EP 0819819B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- tube
- cutter head
- sea bottom
- ship
- boring device
- 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.)
- Expired - Lifetime
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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
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- 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
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- 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
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- 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 the preamble of claim 1, a drilling device for Soil exploration with such a milling head, as well as a Seabed drilling apparatus and method for drilling the seabed, which are used in soil exploration, for soil samples from a defined depth below the Collect drilling surface.
- 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 is conveyed where there is a suction device is transported upwards.
- Such a trench cutter is known for example from EP 0 167 090 A2.
- These trench wall cutters have a large volume Frame construction and are very heavy.
- the drilling cross section is rectangular.
- a support liquid for example those under the name bentonite is known to be filled into the borehole.
- Such trench cutters are not suitable for exploring the ground very suitable, since 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. moreover 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 milling head for drilling Boreholes with a round cross-section known.
- the milling head has a total of four identically designed, rotatable driven cutting wheels, the end faces of which are each conical converge.
- a total of four milling wheel axles of the four milling wheels are equidistant from the drilling axis the milling head positioned, two of each Milling wheel axes lie in a common plane and parallel arranged mutually on both sides of the drilling axis are.
- the milling wheel axes lying in a common plane are in turn offset by 90 ° to the two arranged in the other plane milling wheel axes.
- the cutting wheels, the cutting wheel axes in a common Layers are driven in opposite directions.
- a disadvantage of this known milling head is in particular the comparatively complicated structure. That's what every milling wheel is like is stored and is stored independently by an independent gear arrangement or by a independent drive actuated. Because the milling head when drilling is exposed to extreme mechanical loads at any time the risk that one of the bearings or one the gear arrangement fails. When using standalone Drives for each cutter wheel must be on top of each other be regulated to ensure a constant To ensure drilling feed.
- EP 0 159 801 A1 describes a spherical, rolling Drill bits for earth drilling described.
- This drill bit includes two swivel-mounted hemispheres with cutting elements are arranged.
- One drive is the hemispheres not provided.
- 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 without great effort.
- the task is characterized by the characteristics of the Part of claim 1 with respect to the milling head, the 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 be used for construction can be achieved. At the same time, the drill head has a very high drilling capacity.
- 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 one work tower arranged amidships arranged opening guaranteed.
- the lowerable part of the seabed drilling device 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 become.
- a good drilling operation is achieved by going through from the ship the upper opening of the pipe to the milling head for operating the ocean floor drilling rig Deflection devices are guided at the work table. Thereby it is possible to use these lines relatively strongly at minimal Tension length as well as hustle and bustle in the ocean current avoid without an undesirable through these lines Force is exerted on the drill head and the pipe becomes.
- the lines only practice on the work table Force upwards, which is due to its high weight, however, generally no impairment experiences its orientation.
- 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 due to its high weight, relatively high exposed to upward forces without 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 with large amounts of trailing sea water as rinse water supplied for milling operation.
- FIG. 1 shows a milling head 1 with an approximately round drilling 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 on 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 located 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 an overwater 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 acts.
- 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 of the tube 12 out of this, then parallel to the tube 12 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 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 rolls 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 distance between the ship-side work tower upper part 23 and the guide part 24 strongly compared to the situation shown in Figure 6 increased.
- 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 is 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 on.
- 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 orientation 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 in pairs against each other.
- 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 downwards according to the drilling rate shifts.
- the hydraulic line 20 drive energy to the milling head 1 and Sea water supplied for rinsing through the tube 12.
- optional can 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 established.
- the tube 12 from the Nachfricksystem 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. Thereafter, the lowerable portion of the ocean floor 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.
Description
Obwohl die Bohrvorrichtung auch an Land eingesetzt werden kann, ist sie besonders für den Einsatz als Meeresboden-Bohrvorrichtung geeignet.
- der herablaßbare Teil der Meeresboden-Bohrvorrichtung, welcher hauptsächlich aus dem Fräskopf, dem Arbeitstisch und dem Rohr besteht, wird durch die Öffnung an dem Seil von der schiffseitigen Bergewinde auf den Meeresboden herabgelassen, wobei sich der Arbeitstisch am unteren Ende des Rohres befindet;
- der Fräskopf beginnt damit, in den Meeresboden zu bohren, wobei das Nachfaßsystem seinem Vortrieb entsprechend das Rohr nach unten nachschiebt;
- das Fräsgut wird über eine Absaugleitung zum Schiff hoch befördert;
- nach Beenden des Bohrvorganges zieht das Nachfaßsystem das Rohr aus dem Bohrloch wieder hoch;
- der herablaßbare Teil der Meeresboden-Bohrvorrichtung wird über das Seil von der schiffseitigen Bergewinde wieder auf das Schiff hochgezogen;
- Fig. 1
- eine Seitenqueransicht eines erfindungsgemäßen Bohrkopfes;
- Fig. 2
- eine Seitenlängsansicht eines erfindungsgemäßen Bohrkopfes entlang der Linie a-a aus Fig. 1;
- Fig. 3
- eine Seitenansicht eines Versorgungsschiffes mit darauf angebrachten Arbeitsturm und hochgezogenem herablassbaren Teil der erfindungsgemäßen Meeresboden-Bohrvorrichtung sowie zusätzlich auch der Seitenansicht mit quergeschnittenem Meeresboden des im Bohrbetrieb befindlichen herablassbaren Teils der erfindungsgemäßen Meeresboden-Bohrvorrichtung;
- Fig. 4
- eine Seitenansicht des herablassbaren Teils einer erfindungsgemäßen Meeresboden-Bohrvorrichtung;
- Fig. 5
- eine Draufsicht auf den herablassbaren Teil der erfindungsgemäßen Meeresboden-Bohrvorrichtung;
- Fig. 6
- eine perspektivische Ansicht eines Teils der erfindungsgemäßen Meeresboden-Bohrvorrichtung mit der Darstellung des Verlaufes eines Seiles.
Claims (18)
- Fräskopf mit mindestens zwei beiderseits einer Bohrachse des Fräskopfes (1) angeordneten Fräsrädern (2), die jeweils um eine Fräsradachse drehbar sind und sich in ihren Durchmessern nach außen hin verjüngen und einen Antrieb zum drehenden Antreiben der Fräsräder (2),
dadurch gekennzeichnet, daß vier Fräsräder (2) um eine gemeinsame Fräsradachse drehbar angeordnet sind, welche radial zur Bohrachse gerichtet ist,
daß sich die Durchmesser der Fräsräder (2) vom koaxialen Zentrum des Fräskopfes (1) ausgehend in axialer Richtung der Fräsradachse zur Bildung eines runden Bohrquerschnitts verjüngen, und
daß die Fräsräder (2) zum Fräsen gegenläufig antreibbar sind. - Fräskopf nach Anspruch 1,
dadurch gekennzeichnet, daß er als Vollschnittfräskopf ausgeführt ist. - Fräskopf nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, daß er aus gegensinnig umlaufenden kegelstumpfförmigen Fräsrädern (2) gebildet ist. - Fräskopf nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, daß die vier Fräsräder (2) paarweise an Getriebeschilden (6) gelagert sind und Antriebsmotoren oberhalb der Getriebeschilde (6) angeordnet sind. - Fräskopf nach einem der vorhergehenden Ansprüche, gekennzeichnet durch
Räumerplatten (4) am Fräskopf (1), durch die das Fräsgut im Zusammenwirken mit Fräszähnen (5) auf den Fräsrädern (2) auf definierte maximale Korngröße zerkleinerbar ist. - Fräskopf nach einem der vorhergehenden Ansprüche, gekennzeichnet durch
einen Saugkasten (3), durch den zerkleinertes Fräsgut über eine Absaugleitung (28) absaugbar ist. - Bohrvorrichtung mit einem Fräskopf nach einem der Ansprüche 1 bis 6,
gekennzeichnet durch
ein über dem Fräskopf (1) angeordnetes Rohr (12) mit einem etwa dem Bohrquerschnitt entsprechenden Querschnitt, welches die gesamte Teufe sichert und über welches der Vorschub für den Fräskopf (1) erzeugt wird. - Bohrvorrichtung nach Anspruch 7, gekennzeichnet durch
einen Fräskopf (1) nach einem der Ansprüche 1 bis 6 und einen sich auf der Bohrfläche abstützenden Arbeitstisch (13), welcher das Rohr (12) mit einem Nachfaßsystem (14) erfaßt und in Bohrrichtung verschiebbar lagert. - Bohrvorrichtung nach einem der Ansprüche 7 oder 8,
dadurch gekennzeichnet, daß durch das Rohr (12) eine Absaugleitung (28) und Hydraulikleitung (20), die den Fräskopf (1) mit Antriebsenergie versorgen bzw. das Fräsgut absaugen, verlaufen und daß dem Fräskopf (1) durch das Rohr (12) Spülwasser zuführbar ist. - Bohrvorrichtung nach einem der Ansprüche 8 oder 9, gekennzeichnet durch
ein Bypaßventil (15) am oberen Ende des Rohres (12) durch welches nicht benötigtes Fräsgut aus der Absaugleitung (28) ausgepumpt werden kann. - Bohrvorrichtung nach Anspruch 10, gekennzeichnet durch
die Verwendung zum Meeresboden-Bohren. - Meeresboden-Bohrvorrichtung nach Anspruch 11, gekennzeichnet durch
die Montage auf einem Schiff (11) mit einem über einer mittschiffs angeordneten Öffnung (18) angeordneten Arbeitsturm (16), wobei der herablaßbare Teil der Meeresboden-Bohrvorrichtung durch die Öffnung (18) herablaßbar ist. - Meeresboden-Bohrvorrichtung nach Anspruch 12,
dadurch gekennzeichnet, daß vom Schiff (11) durch die obere Öffnung des Rohres (12) zum Fräskopf (1) verlaufende Leitungen (20, 28) für den Betrieb der Meeresboden-Bohrvorrichtung über auf dem Arbeitstisch (13) befestigte Umlenkeinrichtungen (17) geführt sind. - Meeresboden-Bohrvorrichtung nach einem der Ansprüche 12 oder 13,
gekennzeichnet durch
ein über Rollen geführtes Seil (26), welches das Schiff (11), den Arbeitsturm (16), ein das Rohr (12) umschließendes verschiebbares Führungsteil (24) und den Arbeitstisch (13) miteinander verbindet. - Meeresboden-Bohrvorrichtung nach Anspruch 14,
dadurch gekennzeichnet, daß das Seil (26) unter Spannung gehalten ist, um das Rohr (1) mit dem Führungsteil (24) zu führen. - Verfahren zum Meeresbodenbohren mit einer Meeresboden-Bohrvorrichtung nach einem der Ansprüche 11 bis 15, gekennzeichnet durch
die folgenden Schritte:der herablaßbare Teil der Meeresboden-Bohrvorrichtung welcher hauptsächlich aus dem Fräskopf (1), dem Arbeitstisch (13) und dem Rohr (12) besteht, wird durch die Öffnung (18) an dem Seil (26) von der schiffseitigen Bergewinde (25) auf den Meeresboden herabgelassen, wobei sich der Arbeitstisch (13) am unteren Ende des Rohres (12) befindet;der Fräskopf (1) beginnt in den Meeresboden zu bohren, wobei das Nachfaßsystem (14) seinem Vortrieb entsprechend das Rohr (12) nach unten nachschiebt;das Fräsgut wird über eine Absaugleitung (28) zum Schiff (11) hoch befördert;nach Beenden des Bohrvorganges zieht das Nachfaßsystem (14) das Rohr (12) aus dem Bohrloch wieder hoch;der herablaßbare Teil der Meeresboden-Bohrvorrichtung wird über das Seil (26) von der schiffseitigen Bergewinde (25) wieder auf das Schiff (11) hochgezogen. - Verfahren zum Meeresbodenbohren nach Anspruch 16,
dadurch gekennzeichnet, daß nicht benötigtes Fräsgut über ein Bypaßventil (15) am oberen Ende des Rohres (12) aus der Absaugleitung (28) entfernt wird, ohne zum Schiff (11) hochgepumpt werden zu müssen. - Verfahren zum Meeresbodenbohren nach einem der Ansprüche 16 oder 17,
dadurch gekennzeichnet, daß dem Fräskopf (1) während des Bohrens durch das Rohr (12) nachlaufendes Meerwasser als Spülwasser zugeführt wird.
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 EP0819819A1 (de) | 1998-01-21 |
EP0819819B1 true EP0819819B1 (de) | 2003-10-01 |
Family
ID=26027571
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP97112092A Expired - Lifetime EP0819819B1 (de) | 1996-07-16 | 1997-07-15 | Fräskopf, Bohrvorrichtung sowie Vorrichtung und Verfahren zum Meeresbodenbohren |
Country Status (4)
Country | Link |
---|---|
US (1) | US5931235A (de) |
EP (1) | EP0819819B1 (de) |
AU (1) | AU2868497A (de) |
CA (1) | CA2210442C (de) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1626127A1 (de) | 2004-08-10 | 2006-02-15 | BAUER Maschinen GmbH | Fräsvorrichtung und Verfahren zum Erstellen eines Fräslochs |
EP2251491A1 (de) | 2009-05-15 | 2010-11-17 | BAUER Maschinen GmbH | Fräsvorrichtung und Verfahren zum Abtragen von Bodenmaterial |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10243747B4 (de) * | 2002-09-20 | 2004-07-29 | Bauer Maschinen Gmbh | Verfahren und Vorrichtung zum Abbau von Bodenmaterial |
US20060016621A1 (en) * | 2004-06-09 | 2006-01-26 | Placer Dome Technical Services Limited | Method and system for deep sea drilling |
DE102005017093B4 (de) | 2004-08-12 | 2008-07-24 | Bauer Maschinen Gmbh | Fräse und Verfahren zur Bearbeitung des Erdbodens |
EP1630301B1 (de) * | 2004-08-12 | 2007-10-17 | BAUER Maschinen GmbH | Verfahren und Vorrichtung zur Bodenbearbeitung |
SG187841A1 (en) | 2010-08-13 | 2013-03-28 | Deep Reach Technology Inc | Subsea excavation systems and methods |
CN102220841B (zh) * | 2011-05-23 | 2012-12-26 | 中国地质大学(武汉) | 一种海底取样钻机 |
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 |
Family Cites Families (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 |
US1749344A (en) * | 1926-12-15 | 1930-03-04 | Frederic W Hild | Disk bit |
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 |
FR1304215A (fr) * | 1961-09-08 | 1962-09-21 | California Research Corp | Procédé et appareil de forage des exploitations de puits en mer |
FR1597431A (de) * | 1968-08-07 | 1970-06-29 | ||
GB1278986A (en) * | 1969-09-10 | 1972-06-21 | Shell Int Research | A method of installing a platform carried by a floating vessel at a substantially constant distance above the water-bed |
US4049067A (en) * | 1975-11-05 | 1977-09-20 | Ingersoll-Rand Company | Cutter mounting extension apparatus |
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 |
CA1234096A (en) * | 1984-03-19 | 1988-03-15 | Inco Limited | Spherical bit |
GB2208673B (en) * | 1984-06-29 | 1989-10-11 | Spiral Drilling Systems Inc | Drill bit with full offset cutter bodies |
DE3424999C2 (de) | 1984-07-06 | 1994-01-13 | Bauer Spezialtiefbau | Schlitzwandfräse |
FR2574847B1 (fr) * | 1984-12-13 | 1987-01-16 | Soletanche | Dispositif pour effectuer des forages circulaires de grand diametre dans le sol |
US4718504A (en) * | 1985-03-15 | 1988-01-12 | Tone Boring Co., Ltd. | Trench excavator |
DE3920392A1 (de) * | 1989-06-22 | 1991-01-10 | Bilfinger Berger Bau | Verfahren zum abbau und zur foerderung einer unter wasser lagernden bodenschicht und vorrichtung zur durchfuehrung des verfahrens |
-
1997
- 1997-07-15 EP EP97112092A patent/EP0819819B1/de not_active Expired - Lifetime
- 1997-07-15 CA CA002210442A patent/CA2210442C/en not_active Expired - Fee Related
- 1997-07-16 US US08/895,025 patent/US5931235A/en not_active Expired - Fee Related
- 1997-07-16 AU AU28684/97A patent/AU2868497A/en not_active Abandoned
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1626127A1 (de) | 2004-08-10 | 2006-02-15 | BAUER Maschinen GmbH | Fräsvorrichtung und Verfahren zum Erstellen eines Fräslochs |
US7363990B2 (en) | 2004-08-10 | 2008-04-29 | Bauer Maschinen Gmbh | Cutting device and method for producing a cut hole |
EP2251491A1 (de) | 2009-05-15 | 2010-11-17 | BAUER Maschinen GmbH | Fräsvorrichtung und Verfahren zum Abtragen von Bodenmaterial |
Also Published As
Publication number | Publication date |
---|---|
US5931235A (en) | 1999-08-03 |
AU2868497A (en) | 1998-01-22 |
EP0819819A1 (de) | 1998-01-21 |
CA2210442C (en) | 2004-05-04 |
CA2210442A1 (en) | 1998-01-16 |
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