EP2562347B1 - Underwater work assembly and method for anchoring it - Google Patents

Underwater work assembly and method for anchoring it Download PDF

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Publication number
EP2562347B1
EP2562347B1 EP11006878.0A EP11006878A EP2562347B1 EP 2562347 B1 EP2562347 B1 EP 2562347B1 EP 11006878 A EP11006878 A EP 11006878A EP 2562347 B1 EP2562347 B1 EP 2562347B1
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EP
European Patent Office
Prior art keywords
supporting foot
service platform
water body
underwater work
bed
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.)
Active
Application number
EP11006878.0A
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German (de)
French (fr)
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EP2562347A1 (en
Inventor
Stefan Michael Finkenzeller
Ulrich Wiedenmann
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
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Bauer Maschinen 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 Maschinen GmbH filed Critical Bauer Maschinen GmbH
Priority to EP11006878.0A priority Critical patent/EP2562347B1/en
Priority to US13/592,316 priority patent/US8911180B2/en
Priority to CN201210392777.8A priority patent/CN103015895B/en
Priority to KR1020120092404A priority patent/KR101415752B1/en
Publication of EP2562347A1 publication Critical patent/EP2562347A1/en
Application granted granted Critical
Publication of EP2562347B1 publication Critical patent/EP2562347B1/en
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Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B7/00—Special methods or apparatus for drilling
    • E21B7/12—Underwater drilling
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D27/00—Foundations as substructures
    • E02D27/32—Foundations for special purposes
    • E02D27/52—Submerged foundations, i.e. submerged in open water
    • E02D27/525—Submerged foundations, i.e. submerged in open water using elements penetrating the underwater ground
    • 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
    • E21B7/124—Underwater drilling with underwater tool drive prime mover, e.g. portable drilling rigs for use on underwater floors
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
    • E02D5/74—Means for anchoring structural elements or bulkheads
    • E02D5/80—Ground anchors
    • E02D5/801—Ground anchors driven by screwing
    • 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 an underwater working arrangement, in particular for producing a bore in a body of water, with a retractable platform and a plurality of support feet, which are adjustably mounted on the platform for placing on the body of water and by means of actuating cylinder with respect to the working platform and retractable, according to the preamble of claim 1.
  • the invention further relates to a method for anchoring an underwater working arrangement with a working platform in a river bottom, in which the working platform sunk in a body of water and is placed with several support feet on the body of water, wherein the support feet are adjusted by means of actuating cylinder, according to the preamble of the claim 10th
  • a generic prior art is for example from the EP 2 322 724 A1 or the GB 2 469190 A known.
  • a working platform is provided, which has adjustable hydraulic supports on its outer sides. With these hydraulic supports, the plate-shaped working platform can be aligned in the desired manner on the bottom of the water, with uneven floors for leveling the platform can be compensated. After completing the drilling, the platform is raised again together with the hydraulic supports.
  • the US 3,714,996 shows a device for core drilling on a seabed.
  • a core drill is thereby introduced from a platform into the seabed.
  • augers are provided for screwing into the seabed.
  • From the GB 2 448 358 A is a method for anchoring a skeletal bearing structure out, which serves for receiving and holding an underwater turbine.
  • the scaffold-like bearing structure on anchoring piles which are initially arranged in a retracted position.
  • the anchoring piles are screwed into the riverbed by means of lowerable and detachable rotary drives, whereby the bearing structure is anchored in the river bed.
  • the rotary actuators are then released from the bearing structure and lifted again.
  • the bearing structure and the foundation piles remain functional due to the river bottom.
  • the invention has for its object to provide an underwater work arrangement and a method for anchoring an underwater work arrangement, with which a particularly reliable positioning and anchoring of the underwater work arrangement can be achieved.
  • the underwater working arrangement according to the invention is characterized in that at least one support leg relative to the working platform is rotatably mounted and that a support foot associated rotary drive is provided, with which the support leg is driven to rotate in the body of water rotating.
  • a basic idea of the invention is to anchor the working platform better through the support feet in the water bottom.
  • the support feet are driven in rotation, so that they can be screwed or drilled into the river bottom.
  • the adjusting cylinder arranged on the support foot can exert an axial force in addition to the applied torque.
  • an overall stronger anchoring of the underwater work arrangement is achieved at the riverbed.
  • a single or individual support legs can be provided with such a rotary drive for screwing. All support feet are preferred a working platform, each with a rotary drive designed for such anchoring.
  • the screwing of the support leg in the ground is further improved according to a preferred embodiment of the invention in that a cutting device is provided, which is arranged on an underside of the at least one rotationally driven support leg.
  • the cutting device may in particular be an annular cutting shoe with cutting teeth.
  • the cutting teeth can be interchangeably arranged in cutting tooth holders.
  • the support leg has a support temple and that the cutting device is aligned in a ring and arranged on an underside of the support temple.
  • the support stamp can in particular have a horizontal or substantially horizontally arranged support plate, with which pressure forces can be transmitted from the working platform to the bottom of the water.
  • the cutting device is arranged in a ring, so that it can screw into the ground before the approximately horizontal support temple comes into contact with the ground.
  • a drill helix is arranged on the support foot.
  • the drill spiral can be arranged on the inside or preferably on the outside of a tubular part of the support leg. Due to the helical shape, an additional axial force is generated in the direction of the bottom by the drilling helix when the drive foot of the support base rotates. This promotes screwing in and improves anchoring.
  • the drill helix may be continuous with multiple turns or have only partially arranged partial turns.
  • a preferred embodiment of the invention further consists in that the support leg has a base element and an adjusting element, which is mounted non-rotatably and axially displaceably on the base element.
  • the adjusting element is arranged in the preferably sleeve-shaped or tubular base element and by means of the actuating cylinder axially displaceable relative thereto.
  • Base element and actuator are driven in rotation, with a non-rotatable connection via corresponding stops for torque transmission can be achieved.
  • the base member is rotatably mounted on the base stage and has a transmission element which is driven by a drive shaft of the rotary drive.
  • the rotary drive is firmly attached to the work platform.
  • the torque is transmitted to the transmission element, in particular a sprocket on the base element.
  • the base member is rotationally driven relative to the working platform.
  • the torque is transmitted from the base member to the axially movable actuator.
  • an advantageous embodiment of the invention is that the support foot is tubular and that within the support leg of the actuating cylinder is arranged.
  • the preferably hydraulic actuating cylinder is arranged protected within the support leg and it is achieved an overall compact construction of the support leg.
  • the introduction of the support leg in the water bottom can be done exclusively via the rotary drive.
  • a particularly preferred embodiment of the invention is that with the actuating cylinder during the rotational driving of the support foot, an axial force on the support foot can be applied. As a result, a particularly efficient drilling in of the support foot can also be achieved in a harder body of water.
  • a particularly protected arrangement is achieved according to the invention in that the support leg is surrounded by a receiving sleeve. In a retracted state, the support foot is arranged wholly or at least substantially in the surrounding receiving sleeve.
  • the receiving sleeve is preferably fixedly connected to the working platform.
  • the underwater work arrangement according to the invention can be used for a variety of purposes and work under water. It is particularly preferred according to the invention that on the platform a bracket for receiving and holding a drill drive with drill pipe is provided.
  • the work platform thus serves as a drilling assembly, wherein the working platform supports a drilling torque of the drill drive relative to the body of water.
  • Drilling arrangement is a reliable anchoring of the platform in the river bottom advantageous.
  • the method according to the invention is characterized in that at least one support foot is screwed into the ground by means of a rotary drive and thus the working platform is anchored in the body of water.
  • An advantageous embodiment of the method is that an axial force is applied to the support leg during the screwing by means of the adjusting cylinder. As a result, drilling in of the support leg can be improved.
  • a further advantageous variant of the method is given by the fact that an adjusting element of the support leg is introduced into the river bed up to an anchoring depth and that subsequently by adjusting the support leg by means of the actuating cylinder, the working platform is aligned with respect to the water bottom. So it is anchored in a first step, the support foot in the aquatic environment. After all support legs of the platform are introduced into the ground by screwing in and possibly additional impressions by means of the actuating cylinder, the adjusting cylinders are adjusted so that a desired leveling of the working platform, in particular a horizontal alignment is achieved.
  • the underwater working arrangement with the working platform and the support feet again removed from the water body and lifted.
  • the support legs are thus an integral part of the underwater working arrangement, wherein the support legs are rotatably and axially adjustable supported on the platform.
  • the support feet do not remain in the body of water but are lifted again with the work platform.
  • FIG. 1 an embodiment of an underwater work arrangement 10 according to the invention is shown, which has a constructed of steel beams working platform 12.
  • the work platform 12 includes a tower-like support 14 for receiving a guide tube, not shown, for a drill pipe with drill drive or a cylindrical foundation element, which can be introduced by means of an attachable drill drive in the ground.
  • the working platform 12 further comprises three radially outwardly projecting support arms 13, at the outer ends of a flange plate 18 a receiving sleeve 16 is fixed for each support leg 30.
  • At the top of each receiving sleeve 16 is a respective rotary drive 60 with two motors 61 for rotationally driving the support leg 30 is arranged.
  • the support leg 30 has a tubular base member 32, along the outside of a tubular actuator 34 is axially movable but rotatably mounted.
  • a tubular actuator 34 is axially movable but rotatably mounted.
  • a support temple 40 is provided with a disk-shaped base plate 42.
  • the support temple 40 comprises a cylinder section 41, on the underside of which an annular cutting device 46 with exchangeable cutting teeth 47 is mounted.
  • an annular cutting device 46 with exchangeable cutting teeth 47 is mounted on the outside of the cylinder section 41 and the annular cutter 46 .
  • a drive pinion 64 is rotationally driven via the rotary drive 60 with the two motors 61 via their respective drive shaft 62.
  • the drive pinion 64 are in meshing connection with a transmission element 36, which is connected as an outer ring gear fixed to the base member 32 of the support leg 30.
  • the base member 32 of the support leg 30 is set in rotary motion via the rotary drive 60.
  • the torque is transmitted to the axially extendable actuator 34 so that it can screw by means of the cutter 46 in a body of water. In the illustrated embodiment, this is done without additional axial force on the centrally disposed within the support leg 30 actuating cylinder 50th
  • the actuating cylinder 50 has a cylinder housing 52, which is connected via a bearing block 56 with the base member 32.
  • the actuating cylinder 50 is rotatably connected to the base member 32.
  • a piston 54 is extended axially.
  • a cylindrical attachment member 57 is arranged, which in the in Fig. 4 shown extended position on the base plate 42 of the pad 40 is placed.
  • the working platform 12 can now be raised relative to the water bottom and thus leveled.
  • the support leg 30 with its base element 32 is rotatably mounted relative to the receiving sleeve 16.
  • the receiving sleeve 16 is fixedly connected to the platform 12 via the flange plate 18.

Description

Die Erfindung betrifft eine Unterwasser-Arbeitsanordnung, insbesondere zum Herstellen einer Bohrung in einem Gewässergrund, mit einer versenkbaren Arbeitsbühne und mehreren Stützfüßen, welche an der Arbeitsbühne zum Aufsetzen auf den Gewässergrund verstellbar gelagert sind und mittels Stellzylinder gegenüber der Arbeitsbühne ein- und ausfahrbar sind, gemäß dem Oberbegriff des Anspruchs 1.The invention relates to an underwater working arrangement, in particular for producing a bore in a body of water, with a retractable platform and a plurality of support feet, which are adjustably mounted on the platform for placing on the body of water and by means of actuating cylinder with respect to the working platform and retractable, according to the preamble of claim 1.

Die Erfindung betrifft weiterhin ein Verfahren zum Verankern einer Unterwasser-Arbeitsanordnung mit einer Arbeitsbühne in einem Gewässergrund, bei dem die Arbeitsbühne in einem Gewässer versenkt und mit mehreren Stützfüßen auf den Gewässergrund aufgesetzt wird, wobei die Stützfüße mittels Stellzylinder verstellt werden, gemäß dem Oberbegriff des Anspruchs 10.The invention further relates to a method for anchoring an underwater working arrangement with a working platform in a river bottom, in which the working platform sunk in a body of water and is placed with several support feet on the body of water, wherein the support feet are adjusted by means of actuating cylinder, according to the preamble of the claim 10th

Ein gattungsgemäßer Stand der Technik ist beispielsweise aus der EP 2 322 724 A1 oder der GB 2 469190 A bekannt. Bei dieser bekannten Unterwasser-Bohranordnung ist eine Arbeitsbühne vorgesehen, welche an ihren Außenseiten verstellbare Hydraulikstützen aufweist. Mit diesen Hydraulikstützen kann die plattenförmige Arbeitsbühne in gewünschter Weise auf dem Gewässergrund ausgerichtet werden, wobei Bodenunebenheiten zur Nivellierung der Arbeitsbühne ausgeglichen werden können. Nach Abschluss der Bohrung wird die Arbeitsbühne zusammen mit den Hydraulikstützen wieder gehoben.A generic prior art is for example from the EP 2 322 724 A1 or the GB 2 469190 A known. In this known underwater drilling assembly, a working platform is provided, which has adjustable hydraulic supports on its outer sides. With these hydraulic supports, the plate-shaped working platform can be aligned in the desired manner on the bottom of the water, with uneven floors for leveling the platform can be compensated. After completing the drilling, the platform is raised again together with the hydraulic supports.

Zum Errichten einer Unterwasser-Arbeitsbühne zur Erstellung einer Bohrung im Gewässergrund ist nach der US 3,593,808 auch bekannt, teleskopierbare Füße in den Gewässergrund einzubringen.To build an underwater platform to create a hole in the river bottom is after the US 3,593,808 also known to introduce telescoping feet in the water body.

Um eine Schablone für Unterwasserbohrungen auf einem Meeresgrund zu nivellieren, ist nach der GB 2 138 472 A weiter bekannt, hydraulische Hebesysteme auf Pfählen im Meeresgrund aufzusetzen.To level a template for underwater drilling on a seabed, is after the GB 2 138 472 A further known to set up hydraulic lifting systems on piles in the seabed.

Die US 3,714,996 zeigt eine Vorrichtung zum Kernbohren auf einem Meeresgrund. Ein Kernbohrer wird dabei von einer Plattform in den Meeresgrund eingebracht. Zur Befestigung der Plattform am Meeresgrund sind Schneckenbohrer zum Eindrehen in den Meeresgrund vorgesehen.The US 3,714,996 shows a device for core drilling on a seabed. A core drill is thereby introduced from a platform into the seabed. For fixing the platform to the seabed augers are provided for screwing into the seabed.

Aus der GB 2 448 358 A geht ein Verfahren zum Verankern einer gerüstartigen Lagerstruktur hervor, welche zur Aufnahme und Halten einer Unterwasserturbine dient. Dabei weist die gerüstähnliche Lagerstruktur Verankerungspfähle auf, welche zunächst in einer zurückgezogenen Position angeordnet sind. Nach dem Aufsetzen der Lagerstruktur auf dem Gewässergrund werden mittels absenkbaren und lösbaren Drehantrieben die Verankerungspfähle in den Gewässergrund eingedreht, wobei die Lagerstruktur im Gewässergrund verankert wird. Die Drehantriebe werden anschließend von der Lagerstruktur gelöst und wieder gehoben. Die Lagerstruktur und die Gründungspfähle verbleiben funktionsbedingt am Gewässergrund.From the GB 2 448 358 A is a method for anchoring a skeletal bearing structure out, which serves for receiving and holding an underwater turbine. In this case, the scaffold-like bearing structure on anchoring piles, which are initially arranged in a retracted position. After placing the bearing structure on the bottom of the river, the anchoring piles are screwed into the riverbed by means of lowerable and detachable rotary drives, whereby the bearing structure is anchored in the river bed. The rotary actuators are then released from the bearing structure and lifted again. The bearing structure and the foundation piles remain functional due to the river bottom.

Mit der zuvor erwähnten Arbeitsbühne nach der EP 2 322 724 A1 kann eine zuverlässige Ausrichtung der Arbeitsbühne auf dem Gewässergrund erreicht werden. Bei größeren Unterwasserströmungen oder beim Auftreten stärkerer Betriebskräfte bei Arbeiten an der Arbeitsbühne besteht die Gefahr, dass die Arbeitsbühne in unerwünschter Weise ihre Lage ändert. In diesem Fall muss dann die Arbeitsbühne neu positioniert und ausgerichtet werden.With the aforementioned platform after the EP 2 322 724 A1 a reliable alignment of the platform on the bottom of the water can be achieved. With larger underwater currents or when working forces occur when working on the platform there is a risk that the platform will undesirably change its position. In this case, then the platform must be repositioned and aligned.

Der Erfindung liegt die Aufgabe zugrunde, eine Unterwasser-Arbeitsanordnung und ein Verfahren zum Verankern einer Unterwasser-Arbeitsanordnung anzugeben, mit welchen ein besonders zuverlässiges Positionieren und Verankern der Unterwasser-Arbeitsanordnung erreicht werden.The invention has for its object to provide an underwater work arrangement and a method for anchoring an underwater work arrangement, with which a particularly reliable positioning and anchoring of the underwater work arrangement can be achieved.

Die Aufgabe wird zum einen durch eine Unterwasser-Arbeitsanordnung mit den Merkmalen des Anspruchs 1 und zum anderen durch ein Verfahren mit den Merkmalen des Anspruchs 10 gelöst. Bevorzugte Ausgestaltungen der Erfindung sind in den jeweils abhängigen Ansprüchen angegeben.The object is achieved on the one hand by an underwater working arrangement with the features of claim 1 and on the other hand by a method having the features of claim 10. Preferred embodiments of the invention are specified in the respective dependent claims.

Die erfindungsgemäße Unterwasser-Arbeitsanordnung ist dadurch gekennzeichnet, dass zumindest ein Stützfuß gegenüber der Arbeitsbühne drehbar gelagert ist und dass ein dem Stützfuß zugeordneter Drehantrieb vorgesehen ist, mit welchem der Stützfuß zum Eindrehen in den Gewässergrund drehend angetrieben ist.The underwater working arrangement according to the invention is characterized in that at least one support leg relative to the working platform is rotatably mounted and that a support foot associated rotary drive is provided, with which the support leg is driven to rotate in the body of water rotating.

Ein Grundgedanke der Erfindung besteht darin, die Arbeitsbühne durch die Stützfüße besser in dem Gewässergrund zu verankern. Hierzu werden die Stützfüße drehend angetrieben, so dass diese in den Gewässergrund eingedreht oder eingebohrt werden können. Der am Stützfuß angeordnete Stellzylinder kann dabei ergänzend zum aufgebrachten Drehmoment eine Axialkraft ausüben. Insgesamt wird so eine insgesamt stärkere Verankerung der Unterwasser-Arbeitsanordnung am Gewässergrund erreicht. An der Arbeitsbühne kann ein einzelner oder einzelne Stützfüße mit einem derartigen Drehantrieb zum Eindrehen versehen sein. Bevorzugt sind alle Stützfüße einer Arbeitsbühne mit je einem Drehantrieb für eine derartige Verankerung ausgebildet.A basic idea of the invention is to anchor the working platform better through the support feet in the water bottom. For this purpose, the support feet are driven in rotation, so that they can be screwed or drilled into the river bottom. The adjusting cylinder arranged on the support foot can exert an axial force in addition to the applied torque. Overall, an overall stronger anchoring of the underwater work arrangement is achieved at the riverbed. At the work platform, a single or individual support legs can be provided with such a rotary drive for screwing. All support feet are preferred a working platform, each with a rotary drive designed for such anchoring.

Das Eindrehen des Stützfußes in den Boden wird nach einer bevorzugten Ausführungsform der Erfindung noch dadurch verbessert, dass eine Schneideinrichtung vorgesehen ist, welche an einer Unterseite des zumindest einen drehend angetriebenen Stützfußes angeordnet ist. Die Schneideinrichtung kann dabei insbesondere ein ringförmiger Schneidschuh mit Schneidzähnen sein. Die Schneidzähne können auswechselbar in Schneidzahnhalterungen angeordnet sein.The screwing of the support leg in the ground is further improved according to a preferred embodiment of the invention in that a cutting device is provided, which is arranged on an underside of the at least one rotationally driven support leg. The cutting device may in particular be an annular cutting shoe with cutting teeth. The cutting teeth can be interchangeably arranged in cutting tooth holders.

Weiterhin ist es nach der Erfindung bevorzugt, dass der Stützfuß einen Auflagestempel aufweist und dass die Schneideinrichtung ringförmig ausgerichtet und an einer Unterseite des Auflagestempels angeordnet ist. Der Auflagestempel kann dabei insbesondere eine horizontale oder im Wesentlichen horizontal angeordnete Auflageplatte aufweisen, mit welcher Druckkräfte von der Arbeitsbühne auf den Gewässergrund übertragen werden können. Unterhalb dieses Auflagestempels ist die Schneideinrichtung ringförmig angeordnet, so dass diese sich in den Boden eindrehen kann, bevor der etwa horizontale Auflagestempel mit dem Boden in Kontakt kommt.Furthermore, it is preferred according to the invention that the support leg has a support temple and that the cutting device is aligned in a ring and arranged on an underside of the support temple. The support stamp can in particular have a horizontal or substantially horizontally arranged support plate, with which pressure forces can be transmitted from the working platform to the bottom of the water. Below this support temple, the cutting device is arranged in a ring, so that it can screw into the ground before the approximately horizontal support temple comes into contact with the ground.

Weiterhin ist es nach der Erfindung vorteilhaft, dass an dem Stützfuß eine Bohrwendel angeordnet ist. Die Bohrwendel kann dabei an der Innenseite oder vorzugsweise an der Außenseite eines rohrförmigen Teiles des Stützfußes angeordnet sein. Aufgrund der Wendelform wird durch die Bohrwendel bei drehendem Antrieb des Stützfußes eine zusätzliche Axialkraft in Richtung des Bodens erzeugt. Dies fördert das Eindrehen und verbessert die Verankerung. Die Bohrwendel kann durchgehend mit mehreren Windungen sein oder nur abschnittsweise angeordnete Teilwindungen aufweisen.Furthermore, it is advantageous according to the invention that a drill helix is arranged on the support foot. The drill spiral can be arranged on the inside or preferably on the outside of a tubular part of the support leg. Due to the helical shape, an additional axial force is generated in the direction of the bottom by the drilling helix when the drive foot of the support base rotates. This promotes screwing in and improves anchoring. The drill helix may be continuous with multiple turns or have only partially arranged partial turns.

Eine bevorzugte Ausführungsform der Erfindung besteht weiterhin darin, dass der Stützfuß ein Basiselement und ein Stellelement aufweist, welches drehfest und axial verschiebbar an dem Basiselement gelagert ist. Dabei ist das Stellelement in dem vorzugsweise hülsen- oder rohrförmigen Basiselement angeordnet und mittels des Stellzylinders axial gegenüber diesem verschiebbar. Basiselement und Stellelement werden drehend angetrieben, wobei eine drehfeste Verbindung über entsprechende Anschlagleisten zur Drehmomentübertragung erreichbar ist.A preferred embodiment of the invention further consists in that the support leg has a base element and an adjusting element, which is mounted non-rotatably and axially displaceably on the base element. In this case, the adjusting element is arranged in the preferably sleeve-shaped or tubular base element and by means of the actuating cylinder axially displaceable relative thereto. Base element and actuator are driven in rotation, with a non-rotatable connection via corresponding stops for torque transmission can be achieved.

Zur Drehmomentübertragung ist es nach der Erfindung vorgesehen, dass das Basiselement drehbar an der Basisbühne gelagert ist und ein Getriebeelement aufweist, welches von einer Antriebswelle des Drehantriebes angetrieben ist. Der Drehantrieb ist dabei fest an der Arbeitsbühne angebracht. Über ein Antriebsritzel des Drehantriebes und gegebenenfalls eine Getriebeübersetzung wird das Drehmoment auf das Getriebeelement, insbesondere einen Zahnkranz, an dem Basiselement übertragen. Auf diese Weise ist das Basiselement drehend gegenüber der Arbeitsbühne angetrieben. Über entsprechende Mitnehmerleisten wird das Drehmoment vom Basiselement auf das axial verfahrbare Stellelement übertragen.For torque transmission, it is provided according to the invention that the base member is rotatably mounted on the base stage and has a transmission element which is driven by a drive shaft of the rotary drive. The rotary drive is firmly attached to the work platform. About a drive pinion of the rotary drive and optionally a gear ratio, the torque is transmitted to the transmission element, in particular a sprocket on the base element. In this way, the base member is rotationally driven relative to the working platform. About corresponding entrainment the torque is transmitted from the base member to the axially movable actuator.

Weiterhin besteht eine vorteilhafte Ausgestaltung der Erfindung darin, dass der Stützfuß rohrförmig ausgebildet ist und dass innerhalb des Stützfußes der Stellzylinder angeordnet ist. Hierdurch ist der vorzugsweise hydraulische Stellzylinder geschützt innerhalb des Stützfußes angeordnet und es wird eine insgesamt kompakte Konstruktion des Stützfußes erreicht.Furthermore, an advantageous embodiment of the invention is that the support foot is tubular and that within the support leg of the actuating cylinder is arranged. As a result, the preferably hydraulic actuating cylinder is arranged protected within the support leg and it is achieved an overall compact construction of the support leg.

Grundsätzlich kann das Einbringen des Stützfußes in den Gewässergrund ausschließlich über den Drehantrieb erfolgen. Eine besonders bevorzugte Ausgestaltung der Erfindung liegt darin, dass mit dem Stellzylinder während des drehenden Antreibens des Stützfußes eine Axialkraft auf den Stützfuß aufbringbar ist. Hierdurch lässt sich ein besonders effizientes Einbohren des Stützfußes auch in einen härteren Gewässergrund erreichen.Basically, the introduction of the support leg in the water bottom can be done exclusively via the rotary drive. A particularly preferred embodiment of the invention is that with the actuating cylinder during the rotational driving of the support foot, an axial force on the support foot can be applied. As a result, a particularly efficient drilling in of the support foot can also be achieved in a harder body of water.

Eine besonders geschützte Anordnung wird nach der Erfindung dadurch erreicht, dass der Stützfuß von einer Aufnahmehülse umgeben ist. In einem eingefahrenen Zustand ist der Stützfuß ganz oder zumindest zu einem wesentlichen Teil in der umgebenden Aufnahmehülse angeordnet. Die Aufnahmehülse ist vorzugsweise fest mit der Arbeitsbühne verbunden.A particularly protected arrangement is achieved according to the invention in that the support leg is surrounded by a receiving sleeve. In a retracted state, the support foot is arranged wholly or at least substantially in the surrounding receiving sleeve. The receiving sleeve is preferably fixedly connected to the working platform.

Die erfindungsgemäße Unterwasser-Arbeitsanordnung kann für verschiedenste Zwecke und Arbeiten unter Wasser eingesetzt werden. Besonders bevorzugt ist es nach der Erfindung, dass an der Arbeitsbühne eine Halterung zum Aufnehmen und Halten eines Bohrantriebes mit Bohrgestänge vorgesehen ist. Die Arbeitsbühne dient somit als eine Bohranordnung, wobei die Arbeitsbühne ein Bohrdrehmoment des Bohrantriebes gegenüber dem Gewässergrund abstützt. Insbesondere für eine derartige Bohranordnung ist eine zuverlässige Verankerung der Arbeitsbühne im Gewässergrund vorteilhaft.The underwater work arrangement according to the invention can be used for a variety of purposes and work under water. It is particularly preferred according to the invention that on the platform a bracket for receiving and holding a drill drive with drill pipe is provided. The work platform thus serves as a drilling assembly, wherein the working platform supports a drilling torque of the drill drive relative to the body of water. Especially for such Drilling arrangement is a reliable anchoring of the platform in the river bottom advantageous.

Das erfindungsgemäße Verfahren ist dadurch gekennzeichnet, dass mindestens ein Stützfuß mittels eines Drehantriebes in den Boden eingedreht und so die Arbeitsbühne in dem Gewässergrund verankert wird. Mit diesem Verfahren können die zuvor beschriebenen Vorteile beim Verankern einer Unterwasser-Arbeitsanordnung erreicht werden.The method according to the invention is characterized in that at least one support foot is screwed into the ground by means of a rotary drive and thus the working platform is anchored in the body of water. With this method, the advantages described above for anchoring an underwater working arrangement can be achieved.

Eine vorteilhafte Ausgestaltung des Verfahrens besteht darin, dass während des Eindrehens mittels des Stellzylinders eine Axialkraft auf den Stützfuß aufgebracht wird. Hierdurch kann ein Einbohren des Stützfußes verbessert werden.An advantageous embodiment of the method is that an axial force is applied to the support leg during the screwing by means of the adjusting cylinder. As a result, drilling in of the support leg can be improved.

Eine weitere vorteilhafte Verfahrensvariante ist dadurch gegeben, dass ein Stellelement des Stützfußes bis zu einer Verankerungstiefe in den Gewässergrund eingebracht wird und dass anschließend durch Verstellen des Stützfußes mittels des Stellzylinders die Arbeitsbühne gegenüber dem Gewässergrund ausgerichtet wird. Es wird also in einem ersten Schritt der Stützfuß im Gewässergrund verankert. Nachdem alle Stützfüße der Arbeitsbühne im Gewässergrund durch Eindrehen und gegebenenfalls ergänzendes Eindrücken mittels des Stellzylinders in den Boden eingebracht sind, werden die Stellzylinder so verstellt, dass eine gewünschte Nivellierung der Arbeitsbühne, insbesondere eine horizontale Ausrichtung erreicht wird.A further advantageous variant of the method is given by the fact that an adjusting element of the support leg is introduced into the river bed up to an anchoring depth and that subsequently by adjusting the support leg by means of the actuating cylinder, the working platform is aligned with respect to the water bottom. So it is anchored in a first step, the support foot in the aquatic environment. After all support legs of the platform are introduced into the ground by screwing in and possibly additional impressions by means of the actuating cylinder, the adjusting cylinders are adjusted so that a desired leveling of the working platform, in particular a horizontal alignment is achieved.

Weiterhin ist es nach der Erfindung vorgesehen, dass die Unterwasser-Arbeitsanordnung mit der Arbeitsbühne und den Stützfüßen wieder vom Gewässergrund entfernt und gehoben wird. Die Stützfüße sind somit integraler Bestandteil der Unterwasser-Arbeitsanordnung, wobei die Stützfüße drehbar und axial verstellbar an der Arbeitsbühne gehaltert sind. Die Stützfüße verbleiben nicht im Gewässergrund sondern werden wieder mit der Arbeitsbühne gehoben.Furthermore, it is provided according to the invention that the underwater working arrangement with the working platform and the support feet again removed from the water body and lifted. The support legs are thus an integral part of the underwater working arrangement, wherein the support legs are rotatably and axially adjustable supported on the platform. The support feet do not remain in the body of water but are lifted again with the work platform.

Die Erfindung wird nachfolgend anhand eines bevorzugten Ausführungsbeispieles näher erläutert, welches schematisch in den Zeichnungen dargestellt ist. In den Zeichnungen zeigen:

Fig.1
eine perspektivische Ansicht einer erfindungsgemäßen Unterwasser-Arbeitsanordnung;
Fig. 2
einen Längsschnitt durch einen Stützfuß der erfindungsgemäßen Unterwasser-Anordnung im eingefahrenen Zustand;
Fig.3
einen Längsschnitt gemäß Fig. 2 des Stützfußes in einer abgebohrten Position;
Fig. 4
einen weiteren Längsschnitt gemäß Fig. 2 und Fig. 3 des Stützfußes mit ausgefahrenem Stellzylinder; und
Fig. 5
einen Querschnitt durch den Stützfuß.
The invention will be explained in more detail with reference to a preferred embodiment, which is shown schematically in the drawings. In the drawings show:
Fig.1
a perspective view of an underwater work arrangement according to the invention;
Fig. 2
a longitudinal section through a support leg of the underwater arrangement according to the invention in the retracted state;
Figure 3
a longitudinal section according to Fig. 2 the support foot in a drilled position;
Fig. 4
a further longitudinal section according to Fig. 2 and Fig. 3 the support leg with extended actuating cylinder; and
Fig. 5
a cross section through the support leg.

Gemäß Fig. 1 ist ein Ausführungsbeispiel einer erfindungsgemäßen Unterwasser-Arbeitsanordnung 10 gezeigt, welche eine aus Stahlträgern aufgebaute Arbeitsbühne 12 aufweist. Die Arbeitsbühne 12 umfasst eine turmartige Halterung 14 zur Aufnahme eines nicht dargestellten Führungsrohres für ein Bohrgestänge mit Bohrantrieb oder ein zylindrisches Gründungselement, welches mittels eines aufsetzbaren Bohrantriebes in den Boden einbringbar ist. Die Arbeitsbühne 12 umfasst weiterhin drei radial nach außen vorstehende Tragarme 13, an deren äußeren Enden über eine Flanschplatte 18 eine Aufnahmehülse 16 für jeweils einen Stützfuß 30 befestigt ist . An der Oberseite jeder Aufnahmehülse 16 ist je ein Drehantrieb 60 mit zwei Motoren 61 zum drehenden Antreiben des Stützfußes 30 angeordnet.According to Fig. 1 an embodiment of an underwater work arrangement 10 according to the invention is shown, which has a constructed of steel beams working platform 12. The work platform 12 includes a tower-like support 14 for receiving a guide tube, not shown, for a drill pipe with drill drive or a cylindrical foundation element, which can be introduced by means of an attachable drill drive in the ground. The working platform 12 further comprises three radially outwardly projecting support arms 13, at the outer ends of a flange plate 18 a receiving sleeve 16 is fixed for each support leg 30. At the top of each receiving sleeve 16 is a respective rotary drive 60 with two motors 61 for rotationally driving the support leg 30 is arranged.

Der Aufbau und die Funktion des Stützfußes 30 wird nachfolgend im Zusammenhang mit den Figuren 2 bis 5 erläutert.The structure and function of the support leg 30 will be described below in connection with FIGS. 2 to 5 explained.

Der Stützfuß 30 weist ein rohrförmiges Basiselement 32 auf, entlang dessen Außenseite ein rohrförmiges Stellelement 34 axial verfahrbar aber drehfest gelagert ist. Hierzu sind, wie aus Fig. 5 ersichtlich, an der Außenseite des hülsenförmigen Basiselementes 32 radial vorstehende Außenleisten 33 ausgebildet, welche mit radial nach innen ragenden Innenleisten 35 an dem verfahrbaren Stellelement 34 korrespondierend zur Drehmomentübertragung zusammenwirken.The support leg 30 has a tubular base member 32, along the outside of a tubular actuator 34 is axially movable but rotatably mounted. These are how out Fig. 5 can be seen formed on the outside of the sleeve-shaped base member 32 radially projecting outer strips 33, which cooperate with radially inwardly projecting inner strips 35 on the movable adjusting element 34 corresponding to the torque transmission.

An der Unterseite des Stellelementes 34 ist ein Auflagestempel 40 mit einer scheibenförmigen Grundplatte 42 vorgesehen. Der Auflagestempel 40 umfasst einen Zylinderabschnitt 41, an dessen Unterseite eine ringförmige Schneideinrichtung 46 mit wechselbaren Schneidzähnen 47 angebracht ist. An der Außenseite des Zylinderabschnittes 41 und der ringförmigen Schneideinrichtung 46 sind teilwendelförmige Leisten zum Bilden einer Bohrwendel 48 angeordnet.At the bottom of the adjusting element 34, a support temple 40 is provided with a disk-shaped base plate 42. The support temple 40 comprises a cylinder section 41, on the underside of which an annular cutting device 46 with exchangeable cutting teeth 47 is mounted. On the outside of the cylinder section 41 and the annular cutter 46 are partially helical strips arranged to form a drilling helix 48.

Aus dem in Fig. 2 dargestellten Zustand, bei welchem der Stützfuß 30 axial in der Aufnahmehülse 16 angeordnet ist, wird das Stellelement 34 in die Position gemäß Fig. 3 ausgefahren. Hierzu wird über den Drehantrieb 60 mit den beiden Motoren 61 über deren jeweilige Antriebswelle 62 ein Antriebsritzel 64 drehend angetrieben. Die Antriebsritzel 64 stehen in kämmender Verbindung mit einem Getriebeelement 36, welches als ein Außenzahnkranz fest mit dem Basiselement 32 des Stützfußes 30 verbunden ist. Auf diese Weise wird über den Drehantrieb 60 das Basiselement 32 des Stützfußes 30 in Drehbewegung versetzt. Über die Außenleisten 33 und die Innenleisten 35 wird das Drehmoment auf das axial ausfahrbare Stellelement 34 übertragen, so dass sich dieses mittels der Schneideinrichtung 46 in einen Gewässergrund eindrehen kann. Im dargestellten Ausführungsbeispiel erfolgt dies ohne zusätzliche Axialkraft über den mittig innerhalb des Stützfußes 30 angeordneten Stellzylinder 50.From the in Fig. 2 illustrated state in which the support leg 30 is disposed axially in the receiving sleeve 16, the actuator 34 is in the position according to Fig. 3 extended. For this purpose, a drive pinion 64 is rotationally driven via the rotary drive 60 with the two motors 61 via their respective drive shaft 62. The drive pinion 64 are in meshing connection with a transmission element 36, which is connected as an outer ring gear fixed to the base member 32 of the support leg 30. In this way, the base member 32 of the support leg 30 is set in rotary motion via the rotary drive 60. About the outer edges 33 and the inner strips 35, the torque is transmitted to the axially extendable actuator 34 so that it can screw by means of the cutter 46 in a body of water. In the illustrated embodiment, this is done without additional axial force on the centrally disposed within the support leg 30 actuating cylinder 50th

Nachdem das Stellelement 34 bis zu einer gewünschten Verankerungstiefe in den Gewässergrund eingebracht ist, wird gemäß Fig. 4 der mittige Stellzylinder 50 ausgefahren. Der Stellzylinder weist ein Zylindergehäuse 52 auf, welches über einen Lagerbock 56 mit dem Basiselement 32 verbunden ist. Bei dem dargestellten Ausführungsbeispiel ist der Stellzylinder 50 drehfest mit dem Basiselement 32 verbunden. Durch Zuführung eines Hydraulikfluides über eine hier nicht näher dargestellte Hydraulikfluidzuführung wird ein Kolben 54 axial ausgefahren. Am freien Ende einer Kolbenstange 55 des Kolbens 54 ist ein zylindrisches Aufsatzelement 57 angeordnet, welches in der in Fig. 4 dargestellten ausgefahrenen Position auf der Grundplatte 42 des Auflagestempels 40 aufgesetzt wird. Durch ein weiteres Ausfahren des Stellzylinders 50 kann nun die Arbeitsbühne 12 gegenüber dem Gewässergrund angehoben und somit nivelliert werden. Der Stützfuß 30 mit seinem Basiselement 32 ist gegenüber der Aufnahmehülse 16 drehbar gelagert. Die Aufnahmehülse 16 ist über die Flanschplatte 18 fest mit der Arbeitsbühne 12 verbunden.After the adjusting element 34 is introduced to a desired anchoring depth in the riverbed, is in accordance with Fig. 4 the central actuating cylinder 50 extended. The actuating cylinder has a cylinder housing 52, which is connected via a bearing block 56 with the base member 32. In the illustrated embodiment, the actuating cylinder 50 is rotatably connected to the base member 32. By supplying a hydraulic fluid via a hydraulic fluid supply, not shown here, a piston 54 is extended axially. At the free end of a piston rod 55 of the piston 54, a cylindrical attachment member 57 is arranged, which in the in Fig. 4 shown extended position on the base plate 42 of the pad 40 is placed. By further extension of the actuating cylinder 50, the working platform 12 can now be raised relative to the water bottom and thus leveled. The support leg 30 with its base element 32 is rotatably mounted relative to the receiving sleeve 16. The receiving sleeve 16 is fixedly connected to the platform 12 via the flange plate 18.

Claims (12)

  1. Underwater work assembly, in particular for creating a bore in a bed of a water body, having
    - a service platform (12) which can be lowered and
    - a plurality of supporting feet (30) which are mounted so that they can be adjusted on the service platform (12) for positioning on the bed of the water body and can be moved in and out relative to the service platform by means of an actuating cylinder (50),
    - wherein the supporting foot (30) is adjustable by means of the actuating cylinder (50) for orienting the service platform (12) relative to the bed of the water body,
    characterized in that
    - at least one supporting foot (30) is rotationally mounted relative to the service platform (12),
    - the supporting foot (30) comprises a base element (32) and an adjusting element (34) which is mounted rotationally securely and axially displaceably on the base element (32), and
    - a rotary drive (60) assigned to the supporting foot (30) is provided, with which the supporting foot (30) is driven in rotation for screwing the adjusting element (34) in up to an anchoring depth into the bed of the water body.
  2. Underwater work assembly according to claim 1,
    characterized in that
    a cutting means (46) is provided which is arranged on a lower side of the at least one supporting foot (30) driven in rotation.
  3. Underwater work assembly according to claim 2,
    characterized in that
    the supporting foot (30) comprises a bearing support (40) and
    the cutting means (46) is formed annularly and arranged on a lower side of the bearing support (40).
  4. Underwater work assembly according to one of claims 1 to 3,
    characterized in that
    a drilling helix (48) is arranged on the supporting foot (30).
  5. Underwater work assembly according to one of claims 1 to 4,
    characterized in that
    the base element (32) is mounted rotatably on the service platform (12) and comprises a gear element (36) which is driven by a drive shaft (62) of the rotary drive (60).
  6. Underwater work assembly according to one of claims 1 to 5,
    characterized in that
    the supporting foot (30) is configured in tubular form and
    the actuating cylinder (50) is arranged within the supporting foot (30).
  7. Underwater work assembly according to one of claims 1 to 6,
    characterized in that
    an axial force can be applied to the supporting foot with the actuating cylinder (50) during the driving in rotation of the supporting foot.
  8. Underwater work assembly according to one of claims 1 to 7,
    characterized in that
    the supporting foot (30) is surrounded by a receiving sleeve (16).
  9. Underwater work assembly according to one of claims 1 to 8,
    characterized in that
    a holder (14) for receiving and holding a drill drive with drill rod is provided on the service platform (12).
  10. Method for anchoring an underwater work assembly (10) with a service platform (12) in a bed of a water body, in which the service platform is lowered into a water body and placed with a plurality of supporting feet (30) on the bed of the water body, wherein the supporting feet (30) are adjusted by means of actuating cylinders (50),
    characterized in that
    at least one supporting foot (30) is screwed into the ground by means of a rotary drive (60) and the service platform (12) is thus anchored in the bed of the water body,
    an adjusting element (34) of the supporting foot (30) is incorporated up to an anchoring depth into the bed of the water body by means of the rotary drive (60), and
    subsequently by adjusting the supporting foot (30) by means of the actuating cylinder (50) the service platform (12) is orientated relative to the bed of the water body.
  11. Method according to claim 10,
    characterized in that
    an axial force is applied to the supporting foot (30) during the screwing-in by means of the actuating cylinder (50).
  12. Method according to one of claims 10 to 11,
    characterized in that
    the underwater work assembly (10) with the service platform (12) and the supporting feet (30) is removed and raised again from the bed of the water body.
EP11006878.0A 2011-08-23 2011-08-23 Underwater work assembly and method for anchoring it Active EP2562347B1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP11006878.0A EP2562347B1 (en) 2011-08-23 2011-08-23 Underwater work assembly and method for anchoring it
US13/592,316 US8911180B2 (en) 2011-08-23 2012-08-22 Underwater work assembly and method for anchoring thereof
CN201210392777.8A CN103015895B (en) 2011-08-23 2012-08-23 Underwater operation assembly and for its method of grappling
KR1020120092404A KR101415752B1 (en) 2011-08-23 2012-08-23 Underwater work assembly and method for anchoring thereof

Applications Claiming Priority (1)

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CN103015895A (en) 2013-04-03
KR101415752B1 (en) 2014-07-08
EP2562347A1 (en) 2013-02-27
KR20130023126A (en) 2013-03-07
CN103015895B (en) 2016-04-20
US20130223938A1 (en) 2013-08-29
US8911180B2 (en) 2014-12-16

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