EP2839105B1 - Pipe rack and method for feeding and removing tubular bodies to and from a drilling installation - Google Patents

Description

The invention relates to a pipe storage for feeding and discharging pipe bodies, in particular boring bars, Casingrohre, and / or Bohrstrangteile such as drill collars, drilling motors or the like, to a drilling rig for creating deep holes with a skeleton, at least one frame, as a transport and storage rack of tubular bodies, and in which a plurality of tubular bodies are arranged in a batch, and a removal device for removing the tubular body from the frame and feeding the tubular body into the frame, wherein the skeleton at least two receiving portions for receiving the frame in a substantially horizontal arrangement wherein the frame is rotatably mounted in the receiving portion after insertion and is convertible by means of a lifting element from a horizontal orientation to a vertical orientation, and wherein the tube body individually with the removal device from the frame in a vertical position or e are usable. Furthermore, the invention relates to a method for feeding and discharging tubular bodies.

Such pipe bearings are made, for example WO 2004035985 A1 . US 20100239404 A1 or US 5375667 A known.

When drilling deep wells, for example for the extraction of oil and natural gas or for the production of energy from geothermal energy, a drilling tool is used, which is driven by a drill string consisting of drill string and drill string parts such as drill collars, drill motors or the like. As such, as drilling progresses, additional drill rods must be added to the drill string during drilling progress. These drill rods are fed from the outside. For this purpose, a pipe bearing is provided in addition to the drilling rig.

Furthermore, during the creation of the deep hole, it is necessary to change the drilling tool either because it is worn or the geological conditions have changed, and therefore a different kind of tool becomes necessary. To change the drilling tool, the entire drill string must be removed from the well, and after a new drilling tool has been provided, reinstalled. For this purpose, the drill rods of the drill string, for example, in large systems, in each case to two or three pieces removed and installed at once, and placed in the tower of the rig upright. If this camp is full in the tower, then the boring bars that are still to be removed or installed must be removed from the drilling rig. For small plants without the possibility of placing pipes in the tower, the boring bars are placed directly in the pipe storage.

A known embodiment provides a pipe bearing that is connected via an inclined plane with the drilling rig. The drill pipe is transported via this inclined plane by means of a lifting device in the drilling rig, and then supplied with the lifting device of the drilling rig and installed. This procedure is associated with a lot of manual work and the risk of injury. Furthermore, the storage location for the drill rods outside of the drilling rig involves a large well site, which is not necessarily beneficial in certain applications.

In offshore installations, there is still the problem that possibly the masts of the drilling rig as such are not so large and solid. This is also the case for drilling rigs used for exploration, for example, arranged on jack-up rigs or ships. Here there is the problem that not sufficient number of drill rods in the mast of the rig can be turned off or that they must be removed from the drilling rig in deteriorating weather conditions. This is particularly the case with drilling rigs arranged on cantilevered boom platforms.

The same applies to systems that can be moved. Here, for reasons of weight, the boring bars must also be deposited outside the plant at least when the plant is skidden to the next drilling point.

The object of the invention is therefore to provide a pipe bearing, with which a drilling rig can be automated with tubular bodies and can be supplied safely and quickly with low maintenance in a simple manner.

Furthermore, it has been found that, in particular, in drilling rigs used in confined spaces, such as exploration facilities or in facilities with closely spaced drilling points, the overall process of storage of the drilling rods with respect to the drilling rig and with regard to storage location, and removal of the drill rods from the storage location to the drilling rig, and in particular the storage of the drill rods with respect to the installation and removal of a chisel is in need of improvement. Furthermore, it is therefore the object of the invention to provide a system and a method in which the boring bars can be supplied to and removed from the drilling rig in a simple and secure manner, in particular in confined spaces.

The object is achieved according to the invention by a pipe storage, in which the removal device between a receiving / dispensing position in front of the receiving sections and a transfer / receiving position for transferring the tubular body to a pipe handler or for receiving the tubular body is moved by a pipe handler.

The advantage here is that it is possible to carry out the handling of the pipe storage completely vertical by the execution of the pipe bearing, which is a considerable simplification process and saves energy, because not every pipe body must be transferred from the necessary vertical to the horizontal. Furthermore, this allows automation of the process.

Another teaching of the invention provides that the lifting element is arranged on one side of the skeleton and on the other side of the frame. In this way, the erecting can be done without an additional lifting device such as an external crane.

Another teaching of the invention provides that the removal device has a vertically effective lifting element for, over which the tubular body can be raised, wherein the vertically effective lifting element is preferably horizontally movable away from the removal device. In this way, a separation can be done safely out of the frame out.

A further teaching of the invention provides that the removal device has a horizontally effective holding and / or gripping element, wherein the vertically acting holding and / or gripping element is preferably movable horizontally away from the removal device. This allows a safe vertical transport.

A further teaching of the invention provides that an engagement region is provided in the receiving portion below the frame, in which the removal device engages effectively. It has been shown that lifting out from below is particularly easy and requires little maintenance.

Another teaching of the invention provides that a control is provided, via which the removal or the addition of the tubular body is controllable, wherein preferably individual receiving sections can be blocked with the controller. As a result, racks can be added or removed during operation. It is also advantageous to provide several recordings, whereby a continuous operation is possible.

Another teaching of the invention provides that the tube bearing is arranged on rails and verskiddbar with provided in the receiving portions racks.

With respect to the method, the object according to the invention is achieved by a method in which the tubular bodies are arranged in a rack to form a batch, the rack is delivered substantially horizontally to a tube store and arranged rotatably in a receiving section of the tubular store about a horizontal axis of rotation, the frame is then raised and locked in the pipe support from a substantially horizontal position to a vertical position, each vertical pipe body is removed with a removal device from the vertical frame and passed to a pipe handler, which supplies the pipe body to the drilling area.

Another teaching of the invention provides that a control is provided, wherein preferably the tubular body and / or racks are noted in an inventory list and particularly preferably the inventory list is taken into account in the control.

Another teaching of the invention provides that the tubular bodies are placed in the rack prior to delivery to the drill site for the batch.

Another teaching of the invention provides that the green body is lifted with the removal device from below and removed from the frame.

A further teaching of the invention provides that the frame is raised from a substantially horizontal position to a vertical position by means of a lifting element provided on the tube bearing, preferably a hydraulic cylinder or a toothed rack.

Fig. 1 bis Fig. 13

das erfindungsgemäße Rohrlager in Verbindung mit den einzelnen Verfahrensschritten des erfindungsgemäßen Verfahrens.

The invention will be explained in more detail with reference to a preferred embodiment in conjunction with drawings. Showing:

Fig. 1 to Fig. 13

the tube bearing according to the invention in conjunction with the individual process steps of the method according to the invention.

At a drilling site 10 individual Bohransatzpunkte 11 are provided. About a Bohransatzpunkt 11 a drilling rig 12 is arranged, which is arranged to Skidden on rails 13. The drilling rig 12 is designed as a hydraulic drilling rig, and arranged on a low loader 14. A pipe handler 15 for action upright boring bars 16 is provided. The pipehandler 15 comprises a carrier 17 on which the gripping unit 18 can be moved in height. The gripping unit 18 is pivotable between the drilling area 19 and a transfer point 20 of a pipe support 21.

The tube bearing 21 comprises a base body 22 which is mounted on rails 23 verskiddbar. Above the main body 22 receiving portions 24 are provided, which are each bounded on two opposite sides by a vertical support structure 25. The support structure 25 has at its upper end a receptacle 26 into which a locking and rotating element 27 can be arranged. On a side facing away from the drilling rig 12 side 28 of the pipe bearing 21 receptacles 29 are provided for attaching a hydraulic cylinder 30. The receiving portions 24 are made open between the support structures 25 towards the sides 28, 31.

Between the side facing the drilling rig 31 and the attachment point 32 of the drilling rig 12, a removal device 33 is arranged. This is mobile on Rail 34 is provided. It comprises a base portion 35, which also includes the chassis (not shown) on the rails 34. On the base portion 35, a carrier 36 is arranged, at the upper end of a holder unit 37 is provided. In the base portion 35, a telescopically extendable boom 38 is provided at the end of a removal element 39, which is moved vertically via a hydraulic cylinder 40, is provided.

The boring bars 16 are provided in a transport and storage rack 41. The transport and storage frame 41 comprises on both sides of a frame 42 on which the locking and rotating element 27 is arranged. Within the frame 42 there are provided arrangement elements 43 which have recesses 44 in which the boring bars 16 are provided. Depending on the design of the arrangement elements 43, one or more rows of boring bars 16 may be provided within a transport and storage rack 41. At the top 51 of the transport and storage rack 41 Hubanschläge 45 are provided. At the bottom of the transport and storage rack 41, a receptacle 46 for abutting the hydraulic cylinder 30 is provided.

The transport and storage rack 41 is delivered on a low loader 47. This is set up so that the transport and storage frame 41 arranged on it is aligned with a receiving portion 24 of the pipe support 21 ( Fig. 2 ). Subsequently, the transport and storage frame 41 is inserted into the receiving portion 24 between the support structures 25. In this case, each provided on the outside of the frame 42 locking and rotating elements 27 are inserted into the receptacles 26. This is in the FIG. 3 to FIG. 5 to see. Located in the locking and rotating member 27 at the correct position in the receptacle 26, as this in Fig. 5 is shown, a detent 48 is inserted through an opening 49 in the receptacle 26 in the locking and rotating member 27 and this locked relative to the receptacle 26. Subsequently, the low loader 47 is advanced so far that the transport and storage rack 41 still rests on the low loader 47, the receptacle 46 on the underside of the transport and storage rack 41 but is accessible. Between the receptacle 46 and the receptacle 29 on the base body 22 of the pipe support 21, a hydraulic cylinder 30 is struck. By extending the hydraulic cylinder 30, the transport and storage frame 41 is rotated about the pivot point 50 of the locking and rotating member 27 from the horizontal to the vertical (see Fig. 7 ).

Subsequently or simultaneously, it is also possible to supply a plurality of transport and storage racks 41 to the pipe store 21. The removal of unneeded racks 41, either because they are empty and need to be replaced by new ones, or be it because they are full due to the removal of the drill rods and must be removed, takes place in the reverse order as described above.

In Fig. 8 a rear view of the drilling rig 12 is shown with the tube bearing 21. The pipe bearing 21 in Fig. 8 has six receiving portions 24, which are each filled with transport and storage racks 41 in a vertical arrangement. In order to remove the boring bars 16 from the transport and storage racks 41, the arrangement elements 43 are prepared accordingly so that the boring bars by a movement of the transport and storage rack 41 on its upper side 51, which is the side in the vertical orientation, the the drilling rig 12 faces, can be removed.

To remove the boring bars 16 from the transport and storage rack 41, the removal device 33 is moved in front of the receiving section 24, from which the boring bar 16 is to be removed. Within the base portion 35, a telescopically extendable boom 38 is provided, which is extended horizontally below the lower end of the drill rods 16. At its outer end, the boom 38 has a take-off element 39 adapted to provide a holding connection with the lower end of the drill rod 16. By extending the hydraulic cylinder 40, which connects the extraction element 39 with the boom 38, the drill rod 16 is lifted and removed from the arrangement element, as this in Fig. 9 and 10 is shown. Subsequently, the boom 38 is retracted again while the boring bar 16 is simultaneously moved out of the transport and storage rack 41.

On the base unit 35, a carrier 36 is arranged, at the upper end of a holding element 37 is provided. The holding member 37 also includes a boom 38 which is telescopically extendable. At the end of the boom 38, a gripping or holding element 52 is provided. This surrounds the drill rod 16 and ensures that when retracting the boom 38, the boring bar remains in the removal device 33. The removed boring bar within the removal device 33 is in Fig. 12 shown. Subsequently, the removal device is transported along the rails 34 to the transfer point 20, at which the pipehandler 15 with its gripping unit 18 then picks up the separated boring bar 16 and transports it to the drilling area 19, for example, by an upward movement and a pivoting movement. The transfer to the pipehandler 15 is in Fig. 13 shown. Subsequently, the removal device 33 moves into the next receiving section 24, at which a boring bar 16 is to be removed.

For the procedure of the method and the targeted installation of the drill rod or the maintenance of the order of the drill rods, it is advantageous if the drill rods 16 are logistically coded accordingly and a control (not shown) is provided, with the correct selection of the or element to be removed is noted and monitored to maintain the correct order of the elements. This also applies to the installation of casing pipes as casings into the borehole.

By the method described above, it is possible to achieve a fully automatic Bohrvortrieb, since all the described process steps can be performed unmanned. At the same time, it is possible to operate with a decentralized storage space for the transport and storage site 41, so that only a small space for the supply and removal of the transport and storage racks 41 must be provided at the drilling site as such. As an alternative to using low-loaders 47, it is also possible to transport them by crane or helicopter.

To achieve the next Bohransatzpunktes 11 at the drilling site 10, the drilling rig 12 can be verskiddet together with the tube bearing 21, which may also be fully equipped with transport and storage racks 41. A complex removal of the drill rods 16 is not necessary for this purpose. LIST OF REFERENCE NUMBERS 10 well 39 removal element 11 drilling location 40 hydraulic cylinders 12 drilling rig 41 Transport and storage rack 13 rail 42 frame 14 low loader 43 array element 15 pipehandler 44 deepening 16 drill rod 45 stroke stop 17 carrier 46 admission 18 gripper unit 47 low loader 19 drilling 48 lock 20 Transfer point 49 opening 21 pipe storage 50 pivot point 22 body 51 top 23 rail Gripping / holding element 24 receiving portion 25 support structure 26 admission 27 Locking and rotating element 28 page 29 admission 30 hydraulic cylinders 31 page 32 starting point 33 removal device 34 rail 35 base section 36 carrier 37 holder unit 38 boom

Claims (12)

1. Pipe store for supplying and discharging pipe bodies (16), in particular drill rods, casing pipes, and/or drill-string parts, such as drill collars, drilling motors or the like, to and from a drilling rig (12) for creating deep wells, having a basic structure (22), having at least one framework (41) which is provided in the form of a transporting and storage framework for pipe bodies (16) and in which a plurality of pipe bodies (16) are arranged to form a load, and having a removal apparatus (33) for removing the pipe bodies (16) from the framework (41) and supplying the pipe bodies (16) into the framework (41), wherein the basic structure (22) has at least two accommodating portions (24) for accommodating the framework (41) in an essentially horizontal arrangement, wherein, following insertion into the accommodating portion (24), the framework (41) is fastened in a rotatable manner therein, and can be transferred from a horizontal orientation into a vertical orientation by means of a lifting element (30), and wherein the pipe bodies (16) can be individually removed from the framework (41), or inserted into the same, in the vertical position by the removal apparatus (33), characterized in that the removal apparatus (33) can be displaced along the basic structure (22) in front of the individual portions (24) between an accommodating/discharging position in front of the accommodating portions (24) and a transfer/receiving position for transferring the pipe body (16) to a pipe handler (15) or for receiving the pipe body (16) from a pipe handler (15).
2. Pipe store according to Claim 1, characterized in that the lifting element is arranged with one side at the basic structure (22) and the other side at the framework (41).
3. Pipe store according to Claim 1 or 2, characterized in that the removal apparatus (33) has a vertically active lifting element (39), via which the pipe body (16) can be raised, wherein the vertically active lifting element (39) can be displaced preferably horizontally away from the removal apparatus (33).
4. Pipe store according to one of Claims 1 to 3, characterized in that the removal apparatus (33) has a horizontally active retaining and/or gripping element (52), wherein the vertically active retaining and/or gripping element (52) can be displaced preferably horizontally away from the removal apparatus.
5. Pipe store according to one of Claims 1 to 4, characterized in that an engagement region, in which the removal apparatus (33) actively engages, is provided in the accommodating portion (24), beneath the framework (41).
6. Pipe store according to one of Claims 1 to 5, characterized by the provision of a control means, via which it is possible to control the removal or the addition of the pipe bodies (16), wherein preferably individual accommodating portions (24) can be blocked by the control means.
7. Pipe store according to one of Claims 1 to 6, characterized in that the pipe store (21) is arranged on rails (23) and can skid with frameworks (41) provided in the accommodating portions (24).
8. Method of supplying and discharging pipe bodies (16), in particular drill rods, casing pipes, and/or drill-string parts, such as drill collars, drilling motors or the like, to and from a drilling rig (12) for creating deep wells, having a basic structure (22) having at least two accommodating portions (24) for accommodating a framework (41) in an essentially horizontal arrangement, in the case of which the pipe bodies (16) are arranged in a framework (41) to form a load, the framework (41) is supplied to a pipe store (21) essentially horizontally and is arranged in an accommodating portion (24) of the pipe store (21) such that it can be rotated about a horizontal axis of rotation, the framework (41) is then raised in the pipe store (21) from an essentially horizontal position into a vertical position and arrested, and in each case a vertical pipe body (16) is removed from the vertical framework (41) by a removal apparatus (33) and is transferred to a pipe handler (15), which supplies the pipe body (16) to the drilling region, characterized in that the removal apparatus (33) is displaced along a basic structure (22) in front of the individual portions (24) between an accommodating/discharging position in front of the accommodating portions (24) and a transfer/receiving position for transferring the pipe body (16) to the pipe handler (15) or for receiving the pipe body (16) from the pipe handler (15).
9. Method according to Claim 8, characterized by the provision of a control means, wherein preferably the pipe bodies (16) and/or the frameworks (41) are recorded in an inventory and particularly preferably the control means takes account of the inventory.
10. Method according to Claim 8 or 9, characterized in that the pipe bodies (16) in the framework (41) are arranged to form the load prior to being supplied to the drilling location.
11. Method according to one of Claims 8 to 10, characterized in that the pipe body (16) is raised from beneath, and removed from the framework (41), by the removal apparatus (33).
12. Method according to one of Claims 8 to 11, characterized in that the framework (41) is raised from an essentially horizontal position into a vertical position with the aid of a lifting element (30), preferably a hydraulic cylinder or a rack, provided on the pipe store (21).

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