EP0796978A2 - Magazine for drilling rods - Google Patents

Magazine for drilling rods Download PDF

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Publication number
EP0796978A2
EP0796978A2 EP97103170A EP97103170A EP0796978A2 EP 0796978 A2 EP0796978 A2 EP 0796978A2 EP 97103170 A EP97103170 A EP 97103170A EP 97103170 A EP97103170 A EP 97103170A EP 0796978 A2 EP0796978 A2 EP 0796978A2
Authority
EP
European Patent Office
Prior art keywords
rod
drill
carousel
magazine
elements
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP97103170A
Other languages
German (de)
French (fr)
Other versions
EP0796978A3 (en
Inventor
Gerhard Völkel
Dieter Wurm
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.)
Tracto Technik GmbH and Co KG
Original Assignee
Tracto Technik GmbH and Co KG
Tracto Technik Paul Schmidt Spezialmaschinen KG
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 Tracto Technik GmbH and Co KG, Tracto Technik Paul Schmidt Spezialmaschinen KG filed Critical Tracto Technik GmbH and Co KG
Publication of EP0796978A2 publication Critical patent/EP0796978A2/en
Publication of EP0796978A3 publication Critical patent/EP0796978A3/en
Withdrawn legal-status Critical Current

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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
    • E21B19/00—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables
    • E21B19/20—Combined feeding from rack and connecting, e.g. automatically
    • 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
    • E21B19/14—Racks, ramps, troughs or bins, for holding the lengths of rod singly or connected; Handling between storage place and borehole
    • E21B19/146—Carousel systems, i.e. rotating rack systems
    • 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
    • E21B19/14—Racks, ramps, troughs or bins, for holding the lengths of rod singly or connected; Handling between storage place and borehole
    • E21B19/15—Racking of rods in horizontal position; Handling between horizontal and vertical position

Definitions

  • the invention relates to a drill rod magazine with which rod elements can be brought into an assembly or disassembly position.
  • the linkage fixed in the drilling axis is introduced into the ground, for example, by rotating a carriage.
  • a boom element is installed between the rear end of the boom in the ground and the rotary drive.
  • the linkage is then introduced into the soil by a further section before the next linkage element is connected to the rear end of the linkage protruding from the soil.
  • the Assembly takes place, for example, in the drill shaft of a drill carriage. To do this, the rod element must be positioned in the carriage shaft.
  • a similar process takes place - in reverse order - when pulling a drill pipe out of the ground. For example, when expanding a pilot hole, an expanding head is moved through the pilot hole by pulling back the drill pipe.
  • the linkage elements of the linkage emerging more and more from the ground must be loosened, removed from the drilling axis and placed in a magazine, for example.
  • Known devices use the mechanics used for inserting the rod elements.
  • German design specification 27 21 342 describes a magazine and handling device for drill string elements, in which a gripper grips the drill string elements located in a magazine by means of an arm, lifts them out and brings them into the intended position.
  • the known devices have a more or less complex feed and removal mechanism that move the linkage elements either mechanically or manually by the operating personnel from the tubular magazine into and out of the drilling axis; they are expensive and space-consuming. This has a particularly negative effect on mobile drilling rigs; these must be easy to transport, maneuverable and as little bulky as possible.
  • the invention is based on the problem of creating a magazine for feeding drill pipe elements, which enables a drill pipe element to be attached to a drill pipe located in the ground in a technically simple manner.
  • the solution to the problem is based on the idea of providing the linkage elements in a magazine in the area of linkage assembly or disassembly in a manner that makes special positioning of the individual linkage element superfluous and allows its handling in a few steps without complex control.
  • the problem is solved in detail by a drill rod magazine with a movable rod compartment and a rod handover.
  • the rod compartment can be movable on rails and can be moved as a whole into its working position in the area of the drilling axis in order to bring a rod element in the transfer into the drilling axis or one in the Drill rod located in the drilling axis in the magazine.
  • the rod magazine can consist of a shaft receiving the rod and preferably extends parallel to the drilling axis.
  • the rod element in the transfer is held in position by movable rod holders, preferably by spring elements.
  • the rod magazine is moved until the rod element in the transfer is in the intended installation position and thus in the drilling axis. Then the rod element is fixed between the drill rod in the ground and the drive shaft of a drill carriage and the rod magazine is moved back again, the rod element connected to the drill rod being automatically released by the spring elements and remaining in the drill axis.
  • the magazine When a rod element is taken over from the drilling axis, for example when expanding a pilot hole, the magazine is moved into the area of the drilling axis as with the rod transfer, so that the outermost rod element in the drilling axis is pressed against the spring elements and moves them apart until it is in the handover comes to a standstill.
  • the rod magazine preferably consists of a carousel in which the drill rod elements lie in radially running compartments.
  • the compartments can be open if the carousel is covered by a coat Transfer opening is surrounded, in front of which are movable rod holders. When a compartment is rotated into its transfer position, the transfer opening is in the jacket for the rod elements located in the compartment immediately in front of the compartment opening.
  • the carousel can be located next to the drilling carriage and can be moved between the transfer position and a rest position with a simple drive on rails running transversely to the drilling axis.
  • Another device consists of a shaft-like, likewise movable rod compartment, which has an opening the length of a rod element, from which the rod elements are removed by the rod itself in the manner already described.
  • the narrow opening which is not much wider than the pipe diameter, forces the linkage elements to be arranged in a row so that the linkage elements lie one behind the other.
  • the securing and releasing of the linkage elements again takes place via spring elements which are overcome by the force exerted by the linkage on the linkage element to be handled, or by axially displaceable locking pins which engage in the linkage elements and which are mechanically displaced.
  • the magazine consists of a carousel 1, which is movably mounted in a rail 2 in two rails 3 and is provided with concentrically arranged radial rod compartments 4. In the rod compartments 4 there are rod elements 5. Depending on the circumference of the carousel in the rod compartment 4, several rod elements 5 can be arranged one behind the other.
  • the rail 4 is mounted on a carriage 6 and extends transversely to the drilling axis, so that a transverse rod element 5 located in a rod compartment 4 can be brought into the drilling axis 7 by transverse movement of the carousel 1.
  • the carousel 1 is surrounded by a jacket 8 with a transfer slot 9 corresponding to the length of the rod elements 5.
  • Parallel to the drilling axis are rod holders in the form of opposing spring elements 10 for securing and releasing the rod elements 5 in front of the transfer slot 1 is arranged and the linkage elements 5 are mechanically released, for example by releasing an opening gap, to be held in their compartments 4.
  • a drive pinion 11 is arranged on the axis of the carousel 1, which secures the carousel 1 against self-rotation as a result of weight shifting and at the same time serves as a step-by-step mechanism for incrementally rotating the carousel by a respective spacing; this is done using a push rod 12.
  • the carousel 1 can be moved with the help of a simple drive along the rails 3 perpendicular to the drilling axis so as to shift the linkage transfer 9 into the drilling axis 7.
  • the carousel 1 is lowered so far that the rod element 5 located at the transfer slot 9 of the carousel is in the drilling axis.
  • the rod element 5 is screwed with the help of a rotary drive to the rear end of the rod located in the earth area via a thread.
  • the rod element 5 is then firmly connected to the drill rod.
  • the carousel 1 is then moved back to its starting position.
  • the spring elements 10 open like a mouth and automatically release the rod element 5 screwed to the drill rod when the carousel 1 is retracted, since it is fixed in the drilling axis and the spring elements from the rod element be pushed apart.
  • the transfer 9, 10 is then free and the rod element 5 next in the rod compartment 4 can slide down to the spring elements 10.
  • the carousel 1 is rotated each time a boom is removed with the help of the push rod 12 and the pinion 11 by a distance to achieve a uniform boom removal over the circumference of the carousel.
  • the carousel 1 with its rod handover 9, 10 moves into the drilling axis 7, in which there is a rod element 5 that is still connected to the drill rod located.
  • This linkage element is run over by the automatically moving apart spring elements 10.
  • the linkage element to be picked up presses the linkage element located on the linkage transfer 9, 10 into the linkage compartment 4 of the carousel 1 located behind it and takes up its position itself.
  • the rod element introduced into the rod compartment 4 is then detached from the drill rod located in the ground and the carousel 1 is returned to its starting position.
  • the carousel is rotated one compartment apart, which ensures even filling of the rod compartments.
  • both the boom delivery and the boom pick-up can be carried out through a continuous sequence of steps that - in addition to loosening or fastening the rod elements with respect to the drill rods located in the ground - exhausted in a downward and upward movement of the carousel and requires an extremely small amount of control and mechanical work.
  • the design simplification associated with the invention is based on the principle of moving the magazine or the rod compartment to the drill rod and - after screwing a rod element to the drill rod - using the drill rod itself instead of, for example, a gripper to remove the rod element from the magazine or vice versa, before unscrewing the relevant rod element into the magazine. This allows the mouth-like closure of the rod compartment in the form of the spring elements.

Abstract

The rack can travel along one or more rails (3). The rack can consist of a merry-go-round (1) travelling at right angles to the drilling axis and with radial compartments for the bars, enclosed by a casing with transfer slot. Sliding holders for the bars, typically opposite spring components, can be provided on the merry-go-round. The merry-go-round can be indexed for the distance between compartments by a rotary drive mechanism and held by a locking mechanism.

Description

Die Erfindung betrifft ein Bohrgestängemagazin, mit dem sich Gestängeelemente in eine Montage- oder Demontageposition bringen lassen.The invention relates to a drill rod magazine with which rod elements can be brought into an assembly or disassembly position.

Beim grabenlosen Herstellen unterirdischer Bohrungen verschwindet das Bohrgestänge mit dem Bohrfortschritt zunehmend im Erdreich. Daher ist es erforderlich, entsprechend dem Bohrfortschritt Gestängeelemente mit dem in die Bohrung eintretende Gestänge zu verbinden und so das Bohrgestänge ständig zu verlängern. Dazu werden in der Regel eine Vielzahl von Gestängeelemente im Bereich des Bohrgerätes gelagert.When trenchless underground drilling is carried out, the drill pipe increasingly disappears into the ground as the drilling progresses. It is therefore necessary to connect rod elements with the rod entering the hole in accordance with the drilling progress and thus to continuously lengthen the drill rod. For this purpose, a large number of linkage elements are usually stored in the area of the drill.

Beim Vortrieb wird das in der Bohrachse fixierte Gestänge beispielsweise durch den Drehantrieb einer Lafette ins Erdreich eingebracht. Zur abschnittsweisen Verlängerung des Gestänges wird jeweils ein Gestängeelement zwischen dem hinteren Ende des im Erdreich befindlichen Gestänges und dem Drehantrieb montiert. Daraufhin wird das Gestänge um einen weiteren Abschnitt in das Erdreich eingebracht, bevor das nächste Gestängeelement mit dem aus dem Erdreich herausragende rückwärtigen Ende des Gestänges verbunden wird. Die Montage erfolgt beispielsweise im Gestängeschacht einer Bohrlafette. Dazu muß das Gestängeelement in dem Lafettenschacht positioniert werden.During the advance, the linkage fixed in the drilling axis is introduced into the ground, for example, by rotating a carriage. To extend the boom in sections, a boom element is installed between the rear end of the boom in the ground and the rotary drive. The linkage is then introduced into the soil by a further section before the next linkage element is connected to the rear end of the linkage protruding from the soil. The Assembly takes place, for example, in the drill shaft of a drill carriage. To do this, the rod element must be positioned in the carriage shaft.

Ein ähnlicher Vorgang findet - in umgekehrter Reihenfolge - beim Herausziehen eines Bohrgestänges aus dem Erdreich statt. So wird beispielsweise beim Aufweiten einer Pilotbohrung ein Aufweitkopf durch Zurückziehen des Bohrgestänges durch die Pilotbohrung bewegt. Dabei müssen die Gestängeelemente des mehr und mehr aus dem Erdreich heraustretenden Gestänges gelöst, aus der Bohrachse entfernt und beispielsweise in einem Magazin abgelegt werden. Bekannte Vorrichtungen bedienen sich hierbei der für das Einlegen der Gestängeelemente benutzten Mechanik.A similar process takes place - in reverse order - when pulling a drill pipe out of the ground. For example, when expanding a pilot hole, an expanding head is moved through the pilot hole by pulling back the drill pipe. The linkage elements of the linkage emerging more and more from the ground must be loosened, removed from the drilling axis and placed in a magazine, for example. Known devices use the mechanics used for inserting the rod elements.

Zur Erleichterung der Gestängepositionierung sind verschiedene Vorrichtungen bekannt, bei denen sich in der Regel mehrere Gestängeelemente in einem Magazin befinden. Im Bereich des Magazins befindet sich ein Greifer, mit dessen Hilfe sich ein Gestängeelement aus dem Magazin entnehmen und am hinteren Ende des im Erdreich befindlichen Gestänges ansetzen läßt.To facilitate the positioning of the boom, various devices are known in which there are generally several boom elements in a magazine. In the area of the magazine there is a gripper, with the help of which a linkage element can be removed from the magazine and attached to the rear end of the linkage located in the ground.

So beschreibt die deutsche Auslegeschrift 27 21 342 eine Magazinier- und Handhabungsvorrichtung für Bohrgestängeelemente, bei der ein Greifer in einem Magazin befindliche Bohrgestängeelemente mittels eines Armes erfaßt, heraushebt und in die vorgesehene Position bringt.Thus, the German design specification 27 21 342 describes a magazine and handling device for drill string elements, in which a gripper grips the drill string elements located in a magazine by means of an arm, lifts them out and brings them into the intended position.

Die bekannten Vorrichtungen besitzen eine mehr oder weniger aufwendige Zuführ- und Entnahmemechanik, die die Gestängeelemente entweder mechanisch oder durch das Bedienungspersonal manuell vom Rohrmagazin in die - und aus der - Bohrachse bewegen; sie sind teuer und platzaufwendig. Dies wirkt sich insbesondere bei mobilen Bohrgeräten negativ aus; diese müssen leicht transportierbar, manövrierfähig und möglichst wenig sperrig sein.The known devices have a more or less complex feed and removal mechanism that move the linkage elements either mechanically or manually by the operating personnel from the tubular magazine into and out of the drilling axis; they are expensive and space-consuming. This has a particularly negative effect on mobile drilling rigs; these must be easy to transport, maneuverable and as little bulky as possible.

Der Erfindung liegt das Problem zugrunde, ein Magazin zum Zuführen von Bohrgestängeelemente zu schaffen, welches das Ansetzen eines Bohrgestängeelementes an ein im Erdreich befindliches Bohrgestänge auf technisch einfacher Weise ermöglicht.The invention is based on the problem of creating a magazine for feeding drill pipe elements, which enables a drill pipe element to be attached to a drill pipe located in the ground in a technically simple manner.

Die Lösung des Problems basiert auf dem Gedanken, die Gestängeelemente in einem Magazin im Bereich der Gestängemontage bzw. - demontage in einer Weise bereitzustellen, die ein besonderes Positionieren des einzelnen Gestängeelements überflüssig macht und dessen Handhabung in wenigen Schritten ohne aufwendige Steuerung erlaubt.The solution to the problem is based on the idea of providing the linkage elements in a magazine in the area of linkage assembly or disassembly in a manner that makes special positioning of the individual linkage element superfluous and allows its handling in a few steps without complex control.

Im einzelnen wird das Problem durch ein Bohrgestängemagazin mit einem verfahrbaren Gestängefach und einer Gestängeübergabe gelöst. Das Gestängefach kann auf Schienen verfahrbar sein und sich als ganzes in seine Arbeitsstellung im Bereich der Bohrachse verfahren lassen, um ein in der Übergabe befindliches Gestängeelement in die Bohrachse zu bringen bzw. ein in der Bohrachse befindliches Gestängeelement in das Magazin aufzunehmen.The problem is solved in detail by a drill rod magazine with a movable rod compartment and a rod handover. The rod compartment can be movable on rails and can be moved as a whole into its working position in the area of the drilling axis in order to bring a rod element in the transfer into the drilling axis or one in the Drill rod located in the drilling axis in the magazine.

Das Gestängemagazin kann aus einem die Gestänge aufnehmenden Schacht bestehen und erstreckt sich vorzugsweise parallel zur Bohrachse. Das in der Übergabe befindliche Gestängeelement wird durch verfahrbare Gestängehalter vorzugsweise durch Federelemente in seiner Lage gehalten. Bei der Montage des Gestängeelements wird das Gestängemagazin verfahren, bis sich das in der Übergabe befindliche Gestängeelement in der vorgesehenen Montageposition und damit in der Bohrachse befindet. Alsdann wird das Gestängeelement zwischen dem im Erdreich befindlichen Bohrgestänge und der Antriebswelle einer Bohrlafette fixiert und das Gestängemagazin wieder zurückgefahren, wobei das mit dem Bohrgestänge verbundene Gestängeelement von den Federelementen automatisch freigegeben wird und in der Bohrachse verbleibt.The rod magazine can consist of a shaft receiving the rod and preferably extends parallel to the drilling axis. The rod element in the transfer is held in position by movable rod holders, preferably by spring elements. When assembling the rod element, the rod magazine is moved until the rod element in the transfer is in the intended installation position and thus in the drilling axis. Then the rod element is fixed between the drill rod in the ground and the drive shaft of a drill carriage and the rod magazine is moved back again, the rod element connected to the drill rod being automatically released by the spring elements and remaining in the drill axis.

Bei der Übernahme eines Gestängeelementes aus der Bohrachse, beispielsweise beim Aufweiten einer Pilotbohrung, wird das Magazin wie bei der Gestängeübergabe in den Bereich der Bohrachse verfahren, so daß das in der Bohrachse befindliche äußerste Gestängeelement gegen die Federelemente gedrückt wird und diese auseinanderbewegt, bis es in die Übergabe zu liegen kommt.When a rod element is taken over from the drilling axis, for example when expanding a pilot hole, the magazine is moved into the area of the drilling axis as with the rod transfer, so that the outermost rod element in the drilling axis is pressed against the spring elements and moves them apart until it is in the handover comes to a standstill.

Vorzugsweise besteht das Gestängemagazin aus einem Karussell, bei dem die Bohrgestängeelemente in radial verlaufenden Fächern liegen. Die Fächer können offen sein, wenn das Karussell von einem Mantel mit einer Übergabeöffnung umgeben ist, vor der sich verfahrbare Gestängehalter befinden. Wenn ein Fach in seine Übergabeposition gedreht ist, befindet sich die Übergabeöffnung in dem Mantel für die im Fach befindlichen Gestängeelemente unmittelbar vor der Fachöffnung. Das Karussell kann sich neben der Bohrlafette befinden und mit einem einfachen Antrieb auf quer zur Bohrachse verlaufenden Schienen zwischen der Übergabeposition und einer Ruheposition verfahrbar sein.The rod magazine preferably consists of a carousel in which the drill rod elements lie in radially running compartments. The compartments can be open if the carousel is covered by a coat Transfer opening is surrounded, in front of which are movable rod holders. When a compartment is rotated into its transfer position, the transfer opening is in the jacket for the rod elements located in the compartment immediately in front of the compartment opening. The carousel can be located next to the drilling carriage and can be moved between the transfer position and a rest position with a simple drive on rails running transversely to the drilling axis.

Eine andere erfindungsgemäße Vorrichtung besteht aus einem schachtartigen, ebenfalls verfahrbaren Gestängefach, das eine Öffnung in der Länge eines Gestängeelements besitzt, aus der die Gestängeelemente in der bereits beschriebenen Weise vom Gestänge selbst herausgenommen werden. Die schmale Öffnung, die nicht viel breiter ist als der Rohrdurchmesser, zwingt die Gestängeelemente, sich einreihig anzuordnen, so daß die Gestängeelemente einzeln hintereinanderliegen. Die Sicherung und die Freigabe der Gestängeelemente geschieht wieder über Federelemente, die durch die vom Gestänge auf das zu handhabende Gestängeelement ausgeübte Kraft überwunden werden, oder durch axial verschiebbare, in die Gestängeelemente eingreifende Sicherungsstifte, die mechanisch verschoben werden.Another device according to the invention consists of a shaft-like, likewise movable rod compartment, which has an opening the length of a rod element, from which the rod elements are removed by the rod itself in the manner already described. The narrow opening, which is not much wider than the pipe diameter, forces the linkage elements to be arranged in a row so that the linkage elements lie one behind the other. The securing and releasing of the linkage elements again takes place via spring elements which are overcome by the force exerted by the linkage on the linkage element to be handled, or by axially displaceable locking pins which engage in the linkage elements and which are mechanically displaced.

Im folgenden wird die Erfindung anhand eines in der Zeichnung dargestellten Ausführungsbeispiels des näheren erläutert. In der Zeichnung zeigen:

Fig. 1
die Stirnansicht eines erfindungsgemäßen Gestängemagazins,
Fig. 2
eine Seitenansicht des Gestängemagazins der Fig. 1 mit einer Lafette und
Fig. 3
eine Stirnansicht zu Fig. 2.
The invention is explained in more detail below with reference to an exemplary embodiment shown in the drawing. The drawing shows:
Fig. 1
the front view of a rod magazine according to the invention,
Fig. 2
a side view of the rod magazine of FIG. 1 with a carriage and
Fig. 3
2 shows an end view of FIG. 2.

Das Magazin besteht aus einem Karussell 1, das über eine Konsole 2 in zwei Schienen 3 verfahrbar gelagert und mit konzentrisch angeordneten radialen Gestängefächern 4 versehen ist. In den Gestängefächern 4 befinden sich Gestängeelemente 5. Dabei können je nach Umfang des Karussells im Gestängefach 4 mehrere Gestängeelemente 5 hintereinander angeordnet sein. Die Schiene 4 ist auf einer Lafette 6 gelagert und verläuft quer zur Bohrachse, so daß sich durch Querverfahren des Karussells 1 ein in einem Gestängefach 4 außenliegendes Gestängeelement 5 in die Bohrachse 7 bringen läßt.The magazine consists of a carousel 1, which is movably mounted in a rail 2 in two rails 3 and is provided with concentrically arranged radial rod compartments 4. In the rod compartments 4 there are rod elements 5. Depending on the circumference of the carousel in the rod compartment 4, several rod elements 5 can be arranged one behind the other. The rail 4 is mounted on a carriage 6 and extends transversely to the drilling axis, so that a transverse rod element 5 located in a rod compartment 4 can be brought into the drilling axis 7 by transverse movement of the carousel 1.

Das Karussell 1 ist von einem Mantel 8 mit einem der Länge der Gestängeelemente 5 entsprechenden Übergabeschlitz 9 umgeben. Parallel zur Bohrachse befinden sich vor dem Übergabeschlitz Gestängehalter in Gestalt von einander gegenüberliegenden Federelementen 10 zum Sichern und Freigeben der Gestängeelemente 5. Die Gestängeelemente können auch formschlüssig mittels einander gegenüberliegenden Schiebern oder Fingern oder mittels eines Sicherungsrings (nicht dargestellt), der auf dem Umfang des Karussells 1 angeordnet ist und die Gestängeelemente 5 mechanisch beispielsweise durch Freigabe eines Öffnungsspaltes entläßt, in ihren Fächern 4 gehalten werden.The carousel 1 is surrounded by a jacket 8 with a transfer slot 9 corresponding to the length of the rod elements 5. Parallel to the drilling axis are rod holders in the form of opposing spring elements 10 for securing and releasing the rod elements 5 in front of the transfer slot 1 is arranged and the linkage elements 5 are mechanically released, for example by releasing an opening gap, to be held in their compartments 4.

Auf der Achse des Karussells 1 ist ein Antriebsritzel 11 angeordnet, welches das Karussell 1 gegen eine Eigendrehung infolge Gewichtsverlagerung sichert und gleichzeitig als Schrittschaltwerk zum schrittweisen Weiterdrehen des Karussells um jeweils einen Fachabstand dient; dies geschieht mit Hilfe einer Schubstange 12.A drive pinion 11 is arranged on the axis of the carousel 1, which secures the carousel 1 against self-rotation as a result of weight shifting and at the same time serves as a step-by-step mechanism for incrementally rotating the carousel by a respective spacing; this is done using a push rod 12.

Das Karussell 1 läßt sich mit Hilfe eines einfachen Antriebs entlang den Schienen 3 senkrecht zur Bohrachse verfahren, um so die Gestängeübergabe 9 in die Bohrachse 7 zu verlagern.The carousel 1 can be moved with the help of a simple drive along the rails 3 perpendicular to the drilling axis so as to shift the linkage transfer 9 into the drilling axis 7.

Die Übergabe eines Gestängeelements 5 und dessen Montage am freien bzw. rückwärtigen Ende des im Erdreich befindlichen Bohrgestänges läuft in folgenden Schritten ab.The transfer of a rod element 5 and its assembly at the free or rear end of the drill pipe located in the ground takes place in the following steps.

Zunächst wird das Karussell 1 so weit abgesenkt, daß sich das am Übergabeschlitz 9 des Karussells befindliche Gestängeelement 5 in der Bohrachse befindet. In dieser Position wird das Gestängeelement 5 mit Hilfe eines Rotationsantriebs mit dem rückwärtigen Ende des im Erdbereich befindlichen Gestänges über ein Gewinde verschraubt. Das Gestängeelement 5 ist dann mit dem Bohrgestänge fest verbunden.First, the carousel 1 is lowered so far that the rod element 5 located at the transfer slot 9 of the carousel is in the drilling axis. In this position, the rod element 5 is screwed with the help of a rotary drive to the rear end of the rod located in the earth area via a thread. The rod element 5 is then firmly connected to the drill rod.

Anschließend wird das Karussell 1 in seine Ausgangsstellung zurückgefahren. Die Federelemente 10 öffnen sich maulartig und geben das mit dem Bohrgestänge verschraubte Gestängeelement 5 beim Zurückfahren des Karussells 1 automatisch frei, da es in der Bohrachse fixiert ist und die Federelemente von dem Gestängeelement auseinandergedrückt werden. Anschließend ist die Übergabe 9,10 frei und kann das im Gestängefach 4 nächstfolgende Gestängeelement 5 bis auf die Federelemente 10 abrutschen. Das Karussell 1 wird bei jeder Gestängeentnahme mit Hilfe der Schubstange 12 und des Ritzels 11 um einen Fachabstand weitergedreht, um eine gleichmäßige Gestängeentnahme über den Umfang des Karussells zu erreichen.The carousel 1 is then moved back to its starting position. The spring elements 10 open like a mouth and automatically release the rod element 5 screwed to the drill rod when the carousel 1 is retracted, since it is fixed in the drilling axis and the spring elements from the rod element be pushed apart. The transfer 9, 10 is then free and the rod element 5 next in the rod compartment 4 can slide down to the spring elements 10. The carousel 1 is rotated each time a boom is removed with the help of the push rod 12 and the pinion 11 by a distance to achieve a uniform boom removal over the circumference of the carousel.

Bei einer Gestängeaufnahme, die beispielsweise beim Aufweitbohren erforderlich ist, bei der ein im Erdreich befindliches Bohrgestänge Stück um Stück verkürzt wird, fährt das Karussell 1 mit seiner Gestängeübergabe 9,10 in die Bohrachse 7, in der sich ein noch mit dem Bohrgestänge verbundenes Gestängeelement 5 befindet. Dieses Gestängeelement wird dabei von den sich automatisch auseinanderbewegenden Federelementen 10 überfahren. Das aufzunehmende Gestängeelement drückt dabei das an der Gestängeübergabe 9,10 befindliche Gestängeelement in das dahinterliegende Gestängefach 4 des Karussells 1 zurück und nimmt selbst dessen Position ein. Das in das Gestängefach 4 eingebrachte Gestängeelement wird dann von dem im Erdreich befindlichen Bohrgestänge gelöst und das Karussell 1 in seine Ausgangsposition zurückgefahren. Dabei wird das Karussell um einen Fachabstand weitergedreht, wodurch ein gleichmäßiges Auffüllen der Gestängefächer gewährleistet ist.In the case of a rod holder, which is required, for example, for expanding drilling, in which a drill rod in the ground is shortened piece by piece, the carousel 1 with its rod handover 9, 10 moves into the drilling axis 7, in which there is a rod element 5 that is still connected to the drill rod located. This linkage element is run over by the automatically moving apart spring elements 10. The linkage element to be picked up presses the linkage element located on the linkage transfer 9, 10 into the linkage compartment 4 of the carousel 1 located behind it and takes up its position itself. The rod element introduced into the rod compartment 4 is then detached from the drill rod located in the ground and the carousel 1 is returned to its starting position. The carousel is rotated one compartment apart, which ensures even filling of the rod compartments.

Insgesamt lassen sich sowohl die Gestängeabgabe als auch die Gestängeaufnahme durch eine kontinuierliche Folge von Schritten durchführen, die sich - neben dem Lösen oder Befestigen der Gestängeelemente bezüglich der im Erdreich befindlichen Bohrgestänge - in einer Abwärts- und einer Aufwärtsbewegung des Karussells erschöpft und einen äußerst geringen Aufwand an Steuerung und Mechanik erfordert.Overall, both the boom delivery and the boom pick-up can be carried out through a continuous sequence of steps that - in addition to loosening or fastening the rod elements with respect to the drill rods located in the ground - exhausted in a downward and upward movement of the carousel and requires an extremely small amount of control and mechanical work.

Die mit der Erfindung verbundene konstruktive Vereinfachung basiert auf dem Prinzip, das Magazin bzw. das Gestängefach an das Bohrgestänge heranzufahren und - nach dem Verschrauben eines Gestängeelements mit dem Bohrgestänge - das Bohrgestänge selbst anstatt beispielsweise eines Greifers dazu zu benutzen, das Gestängeelement aus dem Magazin herauszunehmen bzw. umgekehrt vor dem Abschrauben das betreffende Gestängeelement in das Magazin einzubringen. Dies ermöglicht der maulartige Verschluß des Gestängefachs in Gestalt der Federelemente.The design simplification associated with the invention is based on the principle of moving the magazine or the rod compartment to the drill rod and - after screwing a rod element to the drill rod - using the drill rod itself instead of, for example, a gripper to remove the rod element from the magazine or vice versa, before unscrewing the relevant rod element into the magazine. This allows the mouth-like closure of the rod compartment in the form of the spring elements.

Claims (7)

Bohrgestängemagazin mit - einem verfahrbaren Gestängefach (4,13) und - einer Gestängeübergabe (9,10). Drill pipe magazine with - a movable rod compartment (4.13) and - a handover (9,10). Bohrgestängemagazin nach Anspruch 1, dadurch gekennzeichnet, daß das Gestängefach (4) längs mindestens einer Schiene (3) verfahrbar ist.Drill rod magazine according to claim 1, characterized in that the rod compartment (4) can be moved along at least one rail (3). Bohrgestängemagazin nach Anspruch 1 oder 2, gekennzeichnet durch ein quer zur Bohrachse verfahrbares Karussell (1) mit radial angeordneten Gestängefächern (4) und einem die Fächer verschließenden Mantel (8) mit einem Übergabeschlitz (9).Drill rod magazine according to claim 1 or 2, characterized by a carousel (1) which can be moved transversely to the drilling axis with radially arranged rod compartments (4) and a jacket (8) closing the compartments with a transfer slot (9). Bohrgestängemagazin nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß an der Peripherie des Karussells (1) verschiebbare Gestängehalter (10) angeordnet sind.Drill rod magazine according to one of claims 1 to 3, characterized in that displaceable rod holders (10) are arranged on the periphery of the carousel (1). Bohrgestängemagazin nach Anspruch 4, dadurch gekennzeichnet, daß die Gestängehalter aus einander gegenüberliegenden Federelementen (10) bestehen.Drill rod magazine according to claim 4, characterized in that the rod holders consist of spring elements (10) lying opposite one another. Bohrgestängemagazin nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß das Karussell (1) einen Drehantrieb (11,12) zum schrittweisen Drehen um jeweils einen Gestängefachabstand besitzt.Drill rod magazine according to one of claims 1 to 5, characterized in that the carousel (1) has a rotary drive (11, 12) for rotating step by step by a rod spacing. Bohrgestängemagazin nach einem der Ansprüche 1 bis 6, gekennzeichnet durch eine Drehsperre (12) für das Karussell (1).Drill pipe magazine according to one of claims 1 to 6, characterized by a turnstile (12) for the carousel (1).
EP97103170A 1996-03-20 1997-02-27 Magazine for drilling rods Withdrawn EP0796978A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19610883A DE19610883A1 (en) 1996-03-20 1996-03-20 Drill pipe magazine
DE19610883 1996-03-20

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EP0796978A2 true EP0796978A2 (en) 1997-09-24
EP0796978A3 EP0796978A3 (en) 1998-09-02

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JP (1) JPH1025984A (en)
CA (1) CA2200544A1 (en)
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Also Published As

Publication number Publication date
JPH1025984A (en) 1998-01-27
CA2200544A1 (en) 1997-09-20
EP0796978A3 (en) 1998-09-02
US5954209A (en) 1999-09-21
DE19610883A1 (en) 1997-09-25

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