EP1103696B1 - Method and device for handling tubulars in drilling rigs - Google Patents

Abstract

Apparatus for handling pipes and rods comprises a cable pull, a crane (5) connected to the pull and to a steel structure, an elongated element (24) arranged on the outer side of a platform (4) with an opening to the platform, and an adjusting and screwing device for the vertical pipes. An Independent claim is also included for a process for handling pipes and rods.

Description

The invention relates to a method and an apparatus for Handling pipes such as Poles and rods in Drilling equipment and drilling rigs for drilling wells especially on hydrocarbon deposits.

Drilling on hydrocarbon deposits is common discontinuously sunk because after drilling one Pipe length of the drilling process must be interrupted in order to to add further linkage with which the Drilling process can be continued. This is also discontinuous Removal of the drill pipe or the installation and removal of Piping of the borehole (casinge), because the process every time must be interrupted to the appropriate pipes or Boring bars with the drill string or the casing string too connect or disconnect. Are rod trains consisting of put together two or three rods or tubes or again separated into individual rods or tubes, this is also done via the borehole. Therefore, can not be drilled or additional drill pipe or piping must not be pulled. Usual boring bars reach a length of approximately 9 meters, a triple rod train (triple stand) in about 27 meters.

Due to increasing cost pressure, it is a need of Operator of drilling rigs, the discontinuous process of Drilling and drawing of drill pipes and Piping through a quasi-continuous process replace.

At the stationary land drilling rig UTB-1 (research, planning and operation, volume 18, 1993) handling systems were used, with which rod trains don't get off the hook of the drilling rig itself, but through an independent boom handling system were pivoted over the borehole.

There are still pipe racking systems, for example from Maritime Hydraulics, known by means of three-arm systems or a gantry crane on the finger train Feed drilling rig. Disadvantage of these boom handling systems is that the drilling masts in particular with regard to the Statics and weight must be appropriate to this Integrate handling systems. An upgrade or that Attach to existing, especially light, drilling masts drilling systems are not possible with these handling systems. In addition, these handling systems pull high Investment costs after.

US 4,850,439 describes a drilling rig and a method for drilling a borehole using drilling equipment. The In addition to a first, the drilling rig is stationary in the drilling rig arranged conveyor train on a second conveyor train above a preparation opening for drill pipes in the drilling rig is also arranged stationary and with screwing devices cooperates at the preparation opening to Screw the drill string cables together. The second funding train However, it is stationary and cannot be moved horizontally. To drill pipe to the storage area of drill pipe trains transport is also a provided with grippers Means of transport arranged on the drilling platform. One with grabs provided means of transport also takes over the transport of the Drill rods or trains from the storage area to actual borehole. The means of transport is boom handling systems already described above.

It is therefore an object of the invention to provide a device for Handling drill pipe as well Specify handling procedures that already exist Drilling rigs can be retrofitted in particular lightweight construction can or also inexpensive new drilling rigs with it and the disadvantages of the prior art described Avoid technology. In addition, it is the task of rod trains Prepare in parallel with the drilling process for installation and thus accelerate the drilling process as a whole.

The object is achieved by the in claims 1 and 9 listed features solved. Give the subclaims particularly suitable embodiments of the invention again.

The device according to the invention for handling pipes and rod trains in a steel structure with a Parking platform, a working platform, a lifting device, a Drilling drive and having a pipe connection device Drilling rig, is particularly characterized in that at the Drilling rig a cable pull, a two-axis crane connected to the cable pull, which is connected to the steel structure and is arranged above the finger stage and a Extension element, which is on the outside of the finger platform is arranged and has a passage to the finger platform, as well as a parking space next to or on the work platform Screwing device for vertical pipes is arranged, the parking and screwing accessible with the cable below the extension element is, the rope is guided through the extension element ..

With the device according to the invention, it is possible retrofit existing drilling rigs in order to use the parallel Preparing the double or triple rod trains Increase drilling rig performance and occupational safety, since the handling and screwing time is parallel to the normal one Drilling time expires and thus the total time of the drilling process is shortened.

Furthermore, there is advantageously the possibility that the individual rods or Rod trains can be sorted without the risk to be to collide with the rotating drill string.

An advantageous embodiment of the invention provides that the Cable pull from a winch, one or more pulleys, a lifting rope and a lifting aid.

The storage and screwing device for pipes has advantageous one or more parking holes and / or parking boards and one or more holding elements and / or guide elements, the are preferably connected to the work platform. This Holding elements or guide elements secure the Rods or pipes in their upper area against that Falling out.

In a further preferred embodiment, there is the Parking and screwing device arranged, especially Inexpensive and flexible screwing device preferably from a hanging crane on which a screwing pliers is hung is.

The formation of a storage platform is particularly preferred a frame with two opposing sectors, where several fingers are arranged in each of the sectors and that a central web is arranged between the two sectors. It turned out that part of the central web (23) should be foldable and / or pivotable to Sorting or moving rods within the finger platform can.

Another particularly preferred embodiment of the invention provides that on the side of the steel structure facing the A gripper is arranged in the center bar or the storage platform. This can consist of two gripper arms that make up the linkage comprise or have only holding elements. This gripper provides a transfer point for the linkage between the finger platform on the one hand and drilling area on the other.

In a preferred variant is on the parking and Screwing device arranged a rod slide, so that regardless of the usual slide Boring bars introduced into the device according to the invention can be.

a) Die Hebehilfe am Hebeseil wird über einem Übergabepunkt positioniert undb) mindestens eine Stange wird in der Abstell- und Verschraubeinrichtung abgestellt, und

c) eine weitere Stange wird mittels Hebehilfe hochgezogen und über eine in der Abstell- und Verschraubeinrichtung befindlichen Stange positioniert und dann

d) wird diese leicht abgesenkt, sodass Muffe und Zapfen der Gestängeverbinder der beiden Stangen ineinander greifen können, und

e) die beiden Stangen werden anschließend fest miteinander verbunden, und dann

f) wird der Gestängezug aus zwei Stangen mittels der Hebehilfe auf einen Abstellplatz auf der Arbeitsbühne zwischen zwei Finger der Abstell- oder Fingerbühne oder in einen Greifer oder Halter gestellt oder so nahe an den Bohrantrieb herangefahren wird, das der Gestängezug von dem Elevator übernommen werden kann.

The method according to the invention for handling pipes and rod trains in drilling rigs using the device according to the invention is characterized by the following method steps:

a) The lifting aid on the lifting rope is positioned above a transfer point and b) at least one rod is parked in the parking and screwing device, and

c) a further rod is raised by means of lifting aid and positioned over a rod located in the storage and screwing device and then

d) this is slightly lowered so that the sleeve and pin of the rod connector of the two rods can interlock, and

e) the two rods are then firmly connected, and then

f) the rod train consisting of two rods is placed using the lifting aid on a parking space on the working platform between two fingers of the parking or finger platform or in a gripper or holder or is moved so close to the drill drive that the rod train can be taken over by the elevator ,

This is a further advantageous variant of the method characterized that for the purpose of producing a rod train three bars between process steps b) and c) at least one second rod in the parking and screwing device and that after connecting two rods into one Linkage train after process step e) over the still in the Abstell- and screwing device positioned bar and then process steps d) and e) again is carried out.

It is particularly advantageous that the upper transfer point End of a rod slide is chosen. This allows the Bar can be connected directly to the lifting aid without one need additional device, such as an air reel.

It is advantageous to design the inventive method, which the connection in process step e) by means of a Provides screwing pliers, the screwing pliers the upper Linkage connectors of the lower bar and the lower Rod connector of the upper rod encloses and screwed.

The method can be used to manufacture or preparing one or more rod trains parallel to the Drilling is done using the steel structure of the drilling mast without affecting or delaying the drilling process. Otherwise, only a small additional area is required.

The also leads to considerable time savings Procedure, steps a) to f) in reverse Order to perform, instead of connecting the rods a rod train can be separated.

The swiveling, folding or sliding front part the middle bar of the monkey board gives a sufficient Free space around the bars or frame trains using the two-axis crane from one sector of the finger stage to the other sector of the finger stage with the help of a lifting aid make.

die Figur 1 eine Seitenansicht einer Bohranlage,

die Figur 2 die Vorderansicht einer Bohranlage,

die Figur 3 einen Schnitt in der Ebene der Fingerbühne einer Bohranlage,

die Figur 4 die Draufsicht auf die Arbeitsbühne einer Bohranlage und

die Figur 5 den Schnitt A A' in Figur 3.

The invention will be explained with reference to drawings 1 to 5, which illustrate an embodiment. It shows

1 shows a side view of a drilling rig,

2 shows the front view of a drilling rig,

3 shows a section in the plane of the finger platform of a drilling rig,

4 shows the top view of the working platform of a drilling rig and

5 shows the section AA 'in Figure 3.

In Figure 1, the side view of a new or existing Drilling rig shows, is in the rear area of the mast 2 additional winch 15 arranged. About the pulleys 13, the Crown bearing 25 are arranged, the lifting rope 12 of the Winch 15 fed to a two-axis crane 5. Above the Finger stage 4, the two-axis crane 5 can be seen, with the in this example, the linkage 17 from the pick-up position on the Parking boards 18 to the parking space in the finger platform 4 and back can be transported. The two-axis crane serves first Line of rope guidance and consists of four rollers between them the rope 12 is guided so that each point in the finger platform 4th and can be approached in the extension element 24. On the cable 12 is a lifting aid 6 is attached, the connection to a rod 16 or a rod train 17. This Lifting aid can in this embodiment have a Height difference of 30 meters can be driven or moved.

The parking boards 18 are part of a parking and Screwing device, which also in this embodiment Parking hole 27 and holding or guiding elements 37, one additional boom 10 and a suspension crane 7 with a Screw pliers 29 and an extension 21 of the work platform receives. On these parking boards 18 rods 16, or, in front area, also entire rod trains 17 can be parked. The rod 16 can be a boring bar or a Trade the collar. However, instead of rod 16, too Casinge (pipes for the borehole piping) are parked and can be assembled into trains.

According to the finger stage 4 is a Extension element 24 extended. This extension protrudes the substructure, i.e. the work platform (8), and permits vertical lifting of the rod train 17 or a rod 16 of the screeds 18. Especially for static reasons can use the extension element as in this example Cross struts are provided. Instead of rectangular designs can also use other geometric shapes Extension element 24 can be realized. The Extension element 24 is welded to the finger platform 4 or screwed.

At the end of the lifting rope 12, the lifting aid 6 can be seen. The Lifting aid can be equipped with a compensator to compensate for this Relieve rope. The lifting aid is used in particular to Lifting rope 12 with the rod connector 19 of a rod 16 or to connect a rod train 17. On extension 21 of the Working platform 8 is the overhead crane 7 with the attached Screw pliers 20 shown, with which the individual Bolted connector (tool joints) of rods 16 screwed become.

Parking boards 18 and a parking hole 27 are located on the floor for example drawn for casinge.

From catwalk 11 to work platform 8 is the additional one Linkage ramp 10 installed to over an air reel like it is usually present in drilling rigs, or the lifting rope 12 pull up individual rods 16. The usual for drilling rigs Linkage ramp 1 is not shown here.

In this embodiment, the hydraulic winch 15 becomes Pulling up the rods 16 or the linkage 17 used, which is arranged on the mast 2 and with hydraulic hoses a hydraulic drive (not shown) is connected.

However, this additional winch 15 can also be electric or are pneumatically driven. However, there is also Possibility of placing a cylinder in mast 2 or next to mast 2 to be installed horizontally, also over the required stroke features.

Figure 2 shows the front view of the drilling rig with the handling device according to the invention. On one side of the Masts are the planks 18, the screwing pliers 20, the the overhead crane 7 is attached, and the parking hole 27 to detect. The two-axis crane is located in the upper area of mast 2 5, two deflection rollers 13 on the crown bearing 14 and that Lifting rope 12. Just above the finger platform 4 is in this embodiment, the winch 15, on the Rope winding device, the lifting rope 12 is drummed.

In Figure 3, the level of the finger stage 4 is shown. The Extension 24 of the finger platform 4 on the rotary power head 9 opposite side extends over the one below Working platform 8 out. This enables the rod 16 or rod trains 17 safely in a closed frame, namely that of the extended parking or finger stage 4 move and prevent it from falling out to the side. Of Furthermore, in this figure the front part 31 of the foldable here Mittelsteges 23 (Monkey Board) recognizable, the one sufficient space to transport the boom trains from the first sector 29 to the other side of the finger or storage platform 4 allowed in the second sector 30 of the finger stage 4. Of course, the reverse transport route is also especially after assembling rod trains 17, possible.

The center bar can not only be folded but also swiveled or can also be arranged displaceably. The front area 31 of the The central web is articulated on the rear part of the central web 23, so that it can be folded up. In the front area the finger platform 4 is a gripper 32, which is the pick-up point represents for the elevator 34 of the power turret 9. In this Gripper 32 can be the one required for the next drilling section The rod train 17 can be parked near the borehole while the drilling process with the previous rod train 17 still stops. This in turn can save time because the Elevator 34 of the power turret 9 immediately after the start can take the next rod train from this stop position. At the same time, the handling process is safer because there is more time for the provision of another linkage train 17 remains.

In this embodiment, the individual boring bars 16, the additional rod ramp 10 of the drilling rig or an extension 21 of the work platform 8 and fed there be turned off by the pliers 20, which are on the overhead crane 7 is fixed in cooperation with the two-axis crane 5 or of the lifting rope 12 and the lifting aid 6 guided therein Link trains 17 assembled.

FIG. 4 shows the top view of the work platform 8. The additional boom 10 with the planks 18 with the three rods 16 are on or under an extension 21 of the work platform 8 to provide sufficient space for the Screwing the individual rods 16 into a rod train 17 to ensure. The three bars shown in this example 16 are in their upper region of guide elements 37 held.

The screwing device 20 is in this example on one rotatable hanging mast 7 arranged hanging. Nevertheless there is also the possibility of a screwing device 20 slidably or to be pivoted directly on the work platform 8.

In Figure 5, the section A A 'is shown in Figure 3, the Power rotary head 9 and the elevator 34 arranged thereon shows. Opposite this is the front part of the finger stage 4 shown. At the central web 23, which is connected to the finger stage 4 screwed or welded, is the one folded up here front part 31 of the central web 23 articulated. On this front Part 31 of the gripper 32 is arranged in this embodiment. The front part 31 is only folded up when a Rod train 17 (not shown) from a sector of the Finger stage 4 are placed in the opposite sector should. 33 is a barrier that is similar to a finger 22 is formed, but foldable or in its front part is designed extendable so that it can be opened when a rod train 17 from the area of the finger stage 4 in the Area of the hole or to be moved to the gripper 32. In operations such as assembling Frame trains in the area of the extension element 24 or the finger stage 4, it is normally closed, so that Falling out of rod trains in the drilling area effective is avoided.

The procedure for handling is as follows described:

The tubes or rods 16 are on the additional Linkage ramp 10 by means of a lifting rope 12, in which in lower area a lifting aid 6 is arranged, pulled up. The Can also be pulled up by means of a on the drilling rig usually arranged air reel can be accomplished. The Lifting rope 12 is at least one pulley 13, which on or is arranged on the crown bearing 14, on an additional Winch 15 wound or unwound. The winch 15 is preferably with connected to a rope winding device, not shown.

The two-axis crane 5 is in a pick-up position above one Transfer point parked, which is as vertical as possible above the lifting tube 16 is located. This position prevents that Cross pulling of the rod 16 or the later rod train 17 and improves the safety of the device. The lifting rope 12 is in this position in the area of the Extension element 24 of the finger stage 4. By deflection the lifting rope 12 from the vertical is the takeover of a Tube 16 also at the top of the additional rod ramp 10 possible.

The first raised rod 16 is on the planks 18th switched off. In the upper area of the bars are Guide elements 37 that hold the rods 16 and against Secure sideways tilting. Then the second rod 16 in same way over the additional rod slide 10 pulled up and placed on the planks 18. When a Triple rod train (Triple Stand) is to be built then a third bar in the same way raised and turned off. This procedure is possible also the assembly of rod trains from four or more Rods.

Now one of the parked rods is lifted using the lifting aid 6 raised again, so high that the lower one Linkage connector 19 (tool joint) of the raised rod 16 above the upper link connector 19 of the lower rod 16 floats. This rod is over the by the two-axis crane 5 rod 16 held at the bottom and only slightly lowered, see above that sleeve and pin (not shown) of the rod connector 19 can interlock. The last bar to be connected 16 can, if it is not with the air reel on the planks 18 the parking and screwing device has been turned off, too directly using the cable connected to the two-axle crane 5 pulled up and positioned over a parked rod 16 become.

The screwing pliers 20 now enclose the upper one Linkage 19 of the lower rod 16 and the lower Linkage connector 19 of the upper rod. Now that can First screwing a double rod train (Double Stand) with the screwing pliers.

After this connection has been made, this can Double rod train 17 in the finger stage 4, which also as Abstellbühne can be called, parked or with a further rod 16 screwed to a triple rod train 17 become. For this purpose, the double rod train 17 is raised until the lower link connector 19 of the double linkage over the rod connector 19 of the third rod 16, which is still on the planks 18 stands, hovers. Then, like above described, the double linkage is lowered until the pin and interlock the sleeve. Then again with the Screwing pliers 20 performed the screwing. Now he can Triple rod train raised and in the storage or Finger stage 4 can be turned off. Instead of a screw connection other connections between the rods 16 such as Connections are made by welding.

Parking the rod train 17 in the finger platform 4 through the passage 38 between the extension member 24 and the frame of the finger stage 4 guaranteed. This passage can be approximately 35 cm (approximately 15 inches) wide.

With new drilling rigs, the finger platform 4 can be used with a Extension element 24 are constructed in the factory, at Existing drilling rigs must have the existing finger platform 4 can be modified in that an extension element 24 with this is connected, in any case a passage 38 on outer frame of the finger stage must be created, so that the lifting rope 12 with the lifting aid 6 from the rear existing finger stage 4 into the extension element 24 can reach.

The extension element 24 according to the invention equipped finger stage protrudes beyond the substructure, whereby the finger stage 4 is generally self-contained, but that is Threading the assembled rod trains 17 between the individual fingers 22 of the finger platform by means of the two-axis crane 5 and the lifting aid 6 guaranteed at all times. Of course, the rod trains 17 can the storage platform 4th on the side facing the drilling area, for example via the Leave open barrier 43 to be fed into the bore become.

During the drilling work, there is a possibility that in this Fallable front part 31 of the central web 23 to that effect use it to shorten it, leaving a space is created by the rod trains 17 safely within the finger stage 4, but outside the danger zone Drilling rig can be moved. The central web 23 is with the Finger stage 4 and / or the extension 24 of the finger stage 4 connected. The sorting or rearrangement of rod trains 17 in the finger stage 4 outside and independent of the actual one Drilling saves time because the drilling process continues undisturbed can and sorting operations to prepare the drilling progress or the finishing work can be carried out safely.

LIST OF REFERENCE NUMBERS

1

linkage ramp

2

drilling mast

3

crown block

4

Finger stage (racking platform) / storage platform

5

Two-axis crane (hydraulic guide crane)

6

Lifting aid (swivel with compensator)

7

overhead crane

8th

platform

9

Top drive

10

Additional rod ramp

11

Catwalk

12

lifting rope

13

idler pulley

14 15

Winch with Wireline Spooler

16

pole

17

Linkage consisting of three bars (16) or two bars (16)

18

Abstellbohlen

19

Tool Joint

20

Screw-in pliers (tong)

21

Extension of the working platform (8)

22

Finger of the finger stage (4)

23

Middle bridge (monkey board)

24

Extension element of the finger stage (4)

25

crown warehouses

26

parking

27

Parking hole for casings and bars

28

Weather protection covering of the finger stage (4)

29

First sector of the finger stage

30

Another sector of the finger stage

31

Front part of the middle bar

32

grab

33

Cabinets

34

Elevator

35

hoist

36

Hoist cable (35)

37

guide element

38

Passage

39

Elevator Ironing

40

Elevator pivoting device

41

linkage shelves

42

Barrier (33), closed

43

Barrier (33), open

44

Guide of the top drive (9)

45

Screwing device of the elevator (34)

46

drill collar

Claims (14)

1. Apparatus for handling pipes and strings of drill pipes in a drilling rig, which has a steel assembly structure (2) with a positioning platform (4), a working platform (8), a lifting apparatus (35), a drill driving means (9) and a pipe connecting means, characterised in that, on the drilling rig, there are disposed a cable line, a two-axle crane (5), which is connected to the cable line and is connected to the steel assembly structure (2) and is disposed above the finger-type platform (4), and an extension member (24), which is disposed on the external side of the finger-type platform (4) and has a passage (38) leading to the finger-type platform (4), as well as a positioning and screw-connecting means which is disposed adjacent or on the working platform (8) for vertically extending pipes, the positioning and screw-connecting means being disposed beneath the extension member (24) and being attainable with the cable line, the cable (12) being guided through the extension member (24).
2. Apparatus according to claim 1, characterised in that the cable line consists of a cable winch (15), one or more guide rollers (13), a lifting cable (12) and a lifting aid (6).
3. Apparatus according to claim 1 or 2, characterised in that the positioning and screw-connecting means for pipes has one or more positioning holes (27) and/or positioning planks (18), as well as one or more retaining members and/or guide members (37), which are preferably connected to the working platform (8).
4. Apparatus according to one of claims 1 to 3, characterised in that a screw-connecting means, preferably comprising a suspension crane (7) from which is suspended a screw-connecting clamp (20), is disposed on the positioning and screw-connecting means.
5. Apparatus according to one of claims 1 to 4, characterised in that the positioning platform (4) comprises a frame with two oppositely situated sectors (29, 30), a plurality of fingers (22) being disposed respectively in the sectors, and in that a central web (23) is disposed between the two sectors.
6. Apparatus according to one of claims 1 to 5, characterised in that one part of the central web (23) is foldable and/or pivotable.
7. Apparatus according to one of claims 1 to 6, characterised in that a gripping means (32) is disposed on the side of the central web (23) or of the positioning platform (4) facing the steel assembly structure.
8. Apparatus according to one of claims 1 to 7, characterised in that a drill pipe chute (10) is disposed on the positioning and screw-connecting means.
9. Method of handling pipes and strings of drill pipes in drilling rigs by means of an apparatus according to one of claims 1 to 8, characterised in that

   a) the lifting aid (6) is positioned on the lifting cable (12) above a transfer point,

   b) a first rod (16) is positioned in the positioning and screw-connecting means,

   c) at least one additional rod (16) is raised by means of the lifting aid (6) and positioned above a rod situated in the positioning and screw-connecting means, then

   d) it is slightly lowered, so that a sleeve and pin of the drill pipe connectors (19) of the two rods can engage in each other,

   e) the two rods are securedly interconnected, and

   f) the string of drill pipes (17), formed from two rods, is placed by means of the lifting aid (6) on a positioning area (26) between two fingers (22) of the positioning or finger-type platform (4) or in the gripping means (32) or is brought so near to the drill driving means that the string of drill pipes (17) can be picked-up by the elevator (34).
10. Method according to claim 9, characterised in that, for the purpose of producing a string of drill pipes (17) formed from three rods (16), an additional rod (16) is positioned in the positioning and screw-connecting means between method steps b) and c), and in that, after the connecting of two rods (16) to form a string of drill pipes (17) according to method step (e), this string of drill pipes is positioned above the rod still situated in the positioning and screw-connecting means, and subsequently method steps d) and e) are carried out again.
11. Method according to claim 9 or 10, characterised in that the upper end of a drill pipe chute (10) is selected as the transfer point.
12. Method according to one of claims 9 to 11, characterised in that the connection in method step e) is carried out by means of a screw-connecting clamp, the screw-connecting clamp enclosing and screw-connecting the upper drill pipe connector of the lower rod and the lower drill pipe connector of the upper rod.
13. Method according to one of claims 9 to 12, characterised in that the rods (16) are pulled-up by the lifting aid (6) and positioned in the positioning and screw-connecting means.
14. Method according to one of claims 9 to 13, characterised in that the method steps a) to f) are carried out in the reverse sequence, the rods (16) being separated instead of being connected.

Images