DK1809855T3 - Swivel pipe handling for offline assembly of borerørsamlinger - Google Patents

Description

FI ELD OF THE I NVENTI ON

[0001] The present invention relates to a pipe handling system for use in the off-line make-up of drill pipe stands that are used in the exploration and production of oil and gas reserves. In particular, the invention relates to a unique pipe handling system in which a section of the V-door ramp attached to a drilling rig structure pivots to allow one or more joints of drill pipe to be placed in a vertical position for off-line make-up with additional joints of drill pipe.

BACKGROUND OF THE INVENTI ON

[0002] In the conventional drilling of an oil and gas well, a series of drill pipe joints (each joint approximately 30 feet in length) are connected together to form the drill string used in the drilling of a well bore. As the drilling operation proceeds, more and more drill pipe joints must be connected together and lowered into the borehole. For deeper wells, it may be necessary to connect literally hundreds of pipe joints together to drill the well bore to the depth of the producing zone.

[0003] The drill pipe joints are typically coupled together using threaded connections, known as tool joints, in which the male end, or pin member, of one pipe joint is threadably connected to the female end, or box member, of an adjacent pipe joint. The process of threadably coupling adjacent pipe joints together is a time consuming process that requires a significant amount of pipe handling by the drilling rig's crew.

[0004] Specifically, in a typical rotary table drilling operation, a drill bit is placed on the downward end of the drill string. Drill collars - which are essentially thick-walled sections of drill pipe - are connected together to form the bottom hole assembly section of the drill string. The drill collars are used to provide sufficient weight on the drill bit as the drill bit is rotated in the borehole to drill deeper. To rotate the drill string in the borehole, a top drive unit may be used to provide the rotational force to the drill string. Top drive units are connected between the swivel and the crown block in the mast.

[0005] Each time drilling has proceeded far enough to require that a new drill pipe joint be added to the drill string, it is necessary (1) to stop rotation of the drill string, (2) to support the drill string in the borehole, as with slips, (3) to de tach the top drive from the upper pipe joint of the drill string, (4) to attach the top drive to the upper end of a new pipe joint to be added to the drill string, and [5] to make-up the threaded connection between the upper joint of the drill string and the new joint of drill pipe - through use of manually operated tongs or an iron roughneck. Once the new pipe joint has been added to the drill string, the drill string is rotated again and drilling is resumed. As the borehole depth increases, the process of adding a new joint of drill pipe is repeated until the drill string reaches the desired well bore depth.

[0006] As the general description above shows, rotation of the drill string (and, thus, drilling of the borehole) must cease and the rotating equipment must be disconnected from the drill string in the borehole each time it is necessary to make-up a new joint of drill pipe to the drill string. The making-up of the drill string is thus a time consuming process that limits the amount of new hole that can be drilled in a single day. Given the expense of drilling operations, it is desirable, and in the case of a deep well essential, to minimize the time required to drill the well bore.

[0007] Further, it should be noted that the making-up of the drill string requires a substantial amount of drill pipe handling by the drilling rig crew. Given the equipment used to make-up the drill string, the size and weight of the pipe joints used, and the time pressure under which the drilling crew operates, the substantial amount of pipe handling required to drill the well bore provides ample opportunity for injury to the drilling rig personnel.

[0008] In an effort to reduce the amount of time required to make-up the drill string and, ultimately, to drill the well bore, drilling rig manufacturers have begun to design rigs with the ability to make-up "stands" of drill pipe "off-line" - i.e., to make-up joints of drill pipe with equipment other than the main drilling equipment. These drill pipe stands typically consist of two, three, or even four pipe joints threadably connected together. The size of the drill pipe stands that can be assembled off line is primarily dependent on the size of the drilling rig's mast or derrick (hereinafter collectively referred to as "mast").

[0009] After being assembled, these stands can be stored in racking boards attached to and extending outwardly from the drilling rig's mast. When additional pipe joints are needed for continued drilling operations, these pipe stands can be connected to the drill string. In this way, two, three, or four additional pipe joints can be connected to the drill string through a single make-up using the main drilling equipment. US2004/1 31 449 A discloses a method and apparatus for handling a tubular above a wellbore in which pipe handling apparatus is pivotally coupled to a pipe pick-up and lay-down machine.

[0010] Although prior art off-line pipe make-up systems provide the ability to make-up stands of drill pipe off-line, the prior art systems still require a significant amount of pipe handling by the drilling rig crew. The prior art systems typically require two "off-line holes", equivalent to the mousehole in the drilling rig, for placement of the drill pipe joints prior to make-up. Specifically, in the prior art systems, a first joint of drill pipe is lifted from the V-door ramp of the drilling rig and placed in a first off line hole in a platform attached to the drilling rig that supports an off-line roughneck. A second joint of drill pipe is then lifted from the V-door ramp and placed in a second off-line hole in the off-line roughneck platform. A third joint of drill pipe is then lifted from the V-door ramp and swung into engagement with the first joint of drill pipe - which is positioned in the off-line hole closest to the offline roughneck. The two joints are then made up using the offline roughneck, lifted above the off-line roughneck, and swung into position above the third pipe joint. In similar fashion, the two connected joints are made up with the third joint in the second off-line hole. The drill pipe stand is then lifted from the off-line roughneck and positioned in a racking board for subsequent use.

[0011] As the preceding general description shows, the prior art off-line makeup systems require a significant amount of pipe handling by the drilling rig's crew. Further, the prior art systems require off-line holes that are potential hazards to the rig crew performing the off-line make-up operations.

[0012] The present invention is designed to address these and other known problems with the prior art systems. What is needed is an apparatus and method for off-line make-up of drill pipe stands that allows for less pipe handling by a drilling rig's crew and, thus, allows for a safer and more efficient off-line make-up operation. It is an object of the present invention to provide such an apparatus and method for off-line make-up of drill pipe stands. Those and other objectives will become apparent to those of skill in the art from a review of the specification below.

SUMMARY OF THE I NVENTI ON

[0013] An apparatus and method for use in the off-line make-up of drill pipe stands on drilling rigs used in the exploration and production of oil and gas reserves. The disclosed invention is a unique pipe handling system in which a section of the V-door ramp attached to a drilling rig structure pivots to allow one or more joints of drill pipe to be placed in a vertical position for off-line make-up with additional joints of drill pipe. A support cylinder connecting the pivoting section to the drilling rig structure supports the pivoting section in the horizontal position. After a pipe joint is rolled onto the pivoting section of the V-door ramp, the support cylinder retracts, thereby allowing the pivoting section of the V-door ramp to pivot downwardly until the pipe joint is in the vertical position. The pipe joint is maintained in the vertical position within the pivoting section of the V-door ramp by a holding means. Further, while in the vertical position, the pipe joint can be raised or lowered to the proper position through the use of a cylinder located in the pivoting section.

BRI EF DESCRI PTI ON OF THE DRAWI NGS

[0014] The following figures form part of the present specification and are included to further demonstrate certain aspects of the present invention. The invention may be better understood by reference to one or more of these figures in combination with the detailed description of specific embodiments presented herein.

[0015] Figure 1 is a side view of a typical drilling rig structure showing a V-door ramp in accordance with one embodiment of the present invention connected to the drilling rig structure. Figure 1 also shows two racking boards attached to and extending outwardly from the drilling rig's mast.

[0016] Figure 2 is a top view of the drilling rig's floor showing the V-door ramp in accordance with one embodiment of the present invention connected to the drilling rig structure.

[0017] Figure 3 is a close-up top view of the V-door ramp showing the stationary section and the pivoting section of the V-door ramp in accordance with one embodiment of the present invention.

[0018] Figure 4 is a close-up side view of the V-door ramp showing the station- ary section and the pivoting section of the V-door ramp in accordance with one embodiment of the present invention.

[0019] Figure 5 is a detailed side view of the pivoting section of the V-door ramp according to one embodiment of the present invention showing the support cylinder connected between the drilling rig structure and the pivoting section of the V-door ramp in the extended position whereby the pivoting section of the V-door ramp is in the horizontal position.

[0020] Figure 6 is a detailed side view of the pivoting section of the V-door ramp according to one embodiment of the present invention showing the support cylinder connected between the drilling rig structure and the pivoting section of the V-door ramp in the retracted position whereby the pivoting section of the V-door ramp is in the vertical position.

DESCRI PTI ON OF I LLUSTRATI VE EMBODI MENTS

[0021] The following examples are included to demonstrate preferred embodiments of the invention. It should be appreciated by those of skill in the art that the techniques disclosed in the examples that follow represent techniques discovered by the inventors to function well in the practice of the invention, and thus can be considered to constitute preferred modes for its practice. Flowever, those of skill in the art should, in light of the present disclosure, appreciate that many changes can be made in the specific embodiments that are disclosed and still obtain a like or similar result without departing from the spirit and scope of the invention.

[0022] Referring to Figure 1, a V-door ramp 50 is shown connected to a drilling rig structure 10. Drilling rig structure 10 can be either a land based drilling rig or an offshore drilling rig. As discussed in more detail with reference to Figures 2 through 6, V-door ramp 50 is comprised of two sections - stationary section 55 and pivoting section 60. Stationary section 55 is supported in the horizontal position as shown in Figure 1 by support member 62 that is connected between V-door ramp 50 and rig structure 10. One of skill in the art will appreciate that depending on the size of the stationary section 55 of V-door ramp 50 and the number of drill pipe joints that will be supported on the stationary section 55, a plurality of support members 62 may be necessary to support the combined weight of stationary section 55 and the drill pipe joints. Further, although a horizontal V- door ramp 50 is shown in Figure 1, V-door ramp 50 can be a "slanted" ramp that is connected on one end to rig structure 10 while the other end slants diagonally toward the ground (if used on a land based drilling rig) or toward a lower, pipe deck (if used on an offshore drilling rig). One of skill in the art will appreciate that the objectives of the present invention can be obtained whether V-door ramp 50 is a horizontal ramp or a slanted ramp.

[0023] Pivoting section 60 of V-door ramp 50 is shown in Figure 1 in both the horizontal position (solid lines) and in the vertical position (dashed lines). As discussed in more detail with reference to Figures 4 through 6, pivoting section 60 is supported in both the horizontal and vertical positions by support cylinder 64. If V-door ramp 50 is a slanted ramp (as discussed in the preceding paragraph), pivoting section 60 will be sized such that it can pivot from the slanted position to the vertical position as required to achieve the objectives of the present invention.

[0024] Figure 1 also shows two racking boards - 200 and 210 - attached to the mast 20 of the rig structure 10. Racking board 200 is used to store, or "rack", stands of drill pipe that consist of three joints of drill pipe connected together and, thus, measure approximately 90 feet in length. Similarly, Racking board 210 is used to rack stands of drill pipe that consist of four joints of drill pipe connected together and, thus, measure approximately 120 feet in length. Although not shown in Figure 1, a lower racking board may be attached to the drilling rig mast to rack stands of drill pipe that consist of two joints of drill pipe connected together and, thus, measure approximately 60 feet in length. One of skill in the art will appreciate that the size of the drill pipe stands to be made-up using the present invention will depend primarily on the size of the drilling rig's mast.

[0025] Figure 2 is a top view of the rig floor of rig structure 10 showing V-door ramp 50 attached to rig structure 10. As shown in Figure 2, V-door ramp 50 consists of stationary section 55 and pivoting section 60. V-door ramp 50 is used to support the individual pipe joints 40 that are used to make-up the drill string during drilling operations. Figure 2 also shows positioning cylinder 68 within pivoting section 60 used for positioning pipe joint(s) 40 vertically at the proper height during the off-line make-up operation (as discussed in more detail with reference to Figures 3 through 6). Additionally, Figure 2 shows off-line roughneck 100 mounted on an elevated platform 105 that is connected to rig structure 10 near V-door ramp 50.

Functioning of the Pivoting Pipe Handler [0026] Having identified the components of the pivoting pipe handler of the present invention, the functioning of the present invention will be described with reference to Figures 3 through 6. Specifically, with reference to Figure 3, pipe joints 40 are shown supported in the horizontal position by stationary section 55 and pivoting section 60 of V-door ramp 50. During drilling operations, pipe joints 40 will be lifted from a storage area on the ground at the drill site and placed on V-door ramp 50 for holding just prior to use.

[0027] As drilling operations proceed, the borehole will be drilled using the main drilling equipment of rig structure 10 (as discussed previously). While the main drilling equipment drills the borehole, crew members can prepare for the connection of additional pipe joints to the drill string using the off-line make-up system of the present invention. As noted, 60-foot drill pipe stands, 90-foot drill pipe stands, or 120-foot drill pipe stands can be assembled using the off-line make-up system of the present invention. One of skill in the art will appreciate, however, that if the mast of a drilling rig increases in size, it is possible that even longer stands may be assembled using the off-line make-up system of the present invention.

[0028] Depending on the size of the drill pipe stand to be made-up, pivoting section 60 of V-door ramp 50 can be sized to hold either one or two joints of drill pipe. For off-line make-up of a 60-foot stand of drill pipe, pivoting section 60 can be sized to hold one pipe joint 40. For off-line make-up of a 90-foot (or longer) stand of drill pipe, pivoting section 60 can be sized to hold two pipe joints 40. One of skill in the art will appreciate that additional embodiments exist wherein pivoting section 60 can be sized to hold three or even four pipe joints 40 depending on the size of the drill pipe stands to be assembled off-line.

[0029] With reference to Figures 3 through 6, the assembly of a drill pipe stand using the present invention will now be described. To assemble a 90-foot drill pipe stand using the present invention, two pipe joints 40 are rolled from stationary section 55 of V-door ramp 50 onto pivoting section 60. A holding means is then "closed" over the pipe joints 40. In a preferred embodiment, the holding means comprises a hinged bar that is attached to one side of pivoting section 60 such that the bar can be "swung" over the top of the pipe joints 40 into a latching mechanism on the opposite side of pivoting section 60. When in position over the top of the pipe joints 40, the holding means maintains the pipe joints 40 in the vertical position when pivoting section 60 is pivoted downwardly. The holding means can be either automatically "triggered" to close over the top of pipe joints 40 when they are rolled onto pivoting section 60, or it can be manually closed over the top of the pipe joints 40 by members of the drilling rig crew.

[0030] As shown in Figure 4, after the pipe joints 40 are placed in pivoting section 60 and the holding means is closed over the top of the pipe joints 40, pivoting section 60 is pivoted downwardly until the pipe joints 40 are in the vertical position. The holding means prevents the pipe joints 40 from falling out of pivoting section 60 when in the vertical position. Positioning cylinder 68 is used to raise or lower the pipe joints 40 to the proper position for connection to off-line roughneck 1 00.

[0031] While the two pipe joints 40 are being rolled into position onto pivoting section 60 and are being pivoted downwardly, a third pipe joint 40 is lifted from the stationary section 55 of V-door ramp 50 and raised above the area around platform 105 and V-door ramp 50. The third pipe joint 40 is lifted from the stationary section 55 of V-door ramp 50 by connecting tool joint 42 of the third pipe joint 40 to an off-line drill pipe elevator. The off-line drill pipe elevator is then raised by either a winch located in mast 20 or located on the rig floor of rig structure 10, or by a bridge trolley (shown as 205 in Figure 1) mounted on an elevated platform attached to mast 20.

[0032] Third pipe joint 40 is then positioned above the pipe joints 40 in pivoting section 60 (which is in the vertical position) that is closest to off-line roughneck 100. The third pipe joint 40 is then lowered via the off-line drill pipe elevator such that the lower end of the third pipe joint 40 engages one of the vertically held pipe joints 40. Off-line roughneck 1 00 is then moved forward toward pivoting section 60 until it reaches the engaged pipe joints 40. The upper tongs of off-line roughneck 100 "grab" the bottom portion of the third pipe joint (which is held in place by the off-line drill pipe elevator), while the lower tongs of off-line roughneck 100 "grab" the top portion of the engaged pipe joint 40 held in the vertical position within pivoting section 60. Off-line roughneck 100 is then used to apply the necessary rotation to the engaged pipe joints 40 for the initial make-up of the connection and to apply the necessary final make-up torque to the threaded connection. One of skill in the art will appreciate that numerous movable or "extendable" iron roughnecks exist that can be used for off-line roughneck 100 in the present invention, one such roughneck being National-OilwelI's IR30-80 Roughneck.

[0033] After off-line roughneck 100 makes-up the connection, it is disengaged from the pipe joints 40, and the off-line drill pipe elevator is used to lift the connected pipe joints 40 above platform 105. The connected pipe joints 40 are then positioned above the remaining pipe joint 40 held in the vertical position within pivoting section 60. The lower end of the connected pipe joints 40 is then lowered via the off-line drill pipe elevator such that the lower end of the connected pipe joints 40 engages the remaining vertically held pipe joint 40. Off-line roughneck 100 is then moved forward toward pivoting section 60 until it reaches the engaged pipe joints 40. The upper tongs of off-line roughneck 100 "grab" the bottom portion of the connected pipe joints (which are held in place by the off line drill pipe elevator), while the lower tongs of off-line roughneck 100 "grab" the top portion of the engaged pipe joint 40 held in the vertical position within pivoting section 60. Off-line roughneck 100 is then used to apply the necessary rotation to the engaged pipe joints 40 for the initial make-up of the connection and to apply the necessary final make-up torque to the threaded connection.

[0034] After the three pipe joints 40 are connected together as described in the preceding paragraphs, off-line roughneck 100 releases the connected joints of drill pipe, and the stand of drill pipe - now measuring 90 feet in length - is moved into position for storage in racking board 200 (shown in Figure 1) through use of the off-line drill pipe elevator.

[0035] In a similar manner as just described, a 60-foot drill pipe stand can be assembled. For a 60-foot stand, only one pipe joint 40 is rolled onto pivoting section 60 of V-door ramp 50 and pivoted downwardly until it is in a vertical position. The pipe joint 40 held in the vertical position in pivoting section 60 can then be attached to a second pipe joint 40 lifted directly from the stationary section 55 of V-door ramp 50 in the manner described above. For drilling rigs designed to only handle 60-foot drill pipe stands, pivoting section 60 of V-door ramp 50 can be designed to hold only one pipe joint 40.

[0036] Again, in a similar manner as described with respect to a 90-foot drill pipe stand, a fourth pipe joint 40 can be attached to the 90-foot drill pipe stand to form a 120-foot drill pipe stand. To form a 120-foot stand of drill pipe, a fourth pipe joint 40 is rolled onto pivoting section 60 of V-door ramp 50 and pivoted downwardly until it is in the vertical position. The pipe joint 40 held in the vertical position in pivoting section 60 can then be attached to the three pipe joint section that has been previously made up in the manner described above with respect to the 90-foot drill pipe stand. The 120-foot drill pipe stand can than be moved into position for storage in racking board 210 (shown in Figure 1) through use of the off line drill pipe elevator.

[0037] Referring now to Figures 5 and 6, the pivoting mechanism of pivoting section 60 is shown in more detail. In the preferred embodiment of the present invention, pivoting section 60 is connected to rig structure 10 via pin connection 52. Pin connection 52 allows pivoting section 60 to rotate downwardly while remaining connected to rig structure 10. Similar pin connections 65 and 66 are used to connect support cylinder 64 to pivoting section 60 and rig structure 10 respectively.

[0038] In Figure 5, pivoting section 60 is shown in the horizontal position. In this position, support cylinder 64 is in the fully extended position. To "pivot" pivoting section 60 downwardly, support cylinder 64 is slowly retracted. As support cylinder 64 is retracted, pivoting section 60 rotates about pin connector 52 and begins to lower toward the vertical position shown in Figure 6. As support cylinder 64 continues to retract, support cylinder 64 is allowed to rotate about its connection points to the pivoting section 60 (via pin connection 65) and the rig structure 10 (via pin connection 66) such that pin connection 65 forces support cylinder 64 toward rig structure 10. In the preferred embodiment, support cylinder 64 is specifically sized to be fully retracted (or "bottomed out") when pivoting section 60 is in the vertical position, as shown in Figure 6.

[0039] From the preceding description of the pivoting pipe handler of the present invention, one of skill in the art will appreciate that the present invention significantly reduces the amount of pipe handling required to assemble drill pipe stands off-line. This reduction in pipe handling allows for a more efficient and safer off-line make-up operation. Further, it will be appreciated that the pivoting V-door ramp section of the present invention alleviates the need for the "off line holes" used in the prior art, thereby removing another safety concern found in the prior art.

[0040] Moreover, although the present invention has been described with reference to the off line make-up of drill pipe stands, one of skill in the art will appre ciate that the present invention can be adapted for off-line make-up of stands of different types of oilfield tubulars, including drill pipe stands, casing stands, liner stands, and/or production tubing.

[0041] While the apparatus, compositions and methods of this invention have been described in terms of preferred or illustrative embodiments, it will be apparent to those of skill in the art that variations may be applied to the apparatus and methods described herein without departing from the concept and scope of the invention. All such similar substitutes and modifications apparent to those skilled in the art are deemed to be within the scope and concept of the invention as it is set out in the following claims.

Claims (49)

1. System til offline sammenbygning af samlinger af oliefeltrør på en boreplatformkonstruktion, omfattende: - en V-dørrampe forbundet med boreplatform konstruktionen, hvilken V-dørrampe har en stationær sektion og en svingbar sektion, hvori den svingbare sektion er indrettet til at svinge mellem en første position og en anden position; - mindst en støttecylinder med en første ende og en anden ende, hvori den første ende er svingbart forbundet med boreplatformkonstruktionen, og den anden ende er svingbart forbundet med V-dørrampens svingbare sektion, kendetegnet ved, at konstruktionen yderligere omfatter: - et holdeorgan til fastgørelse af mindst en rørsamling i V-dørrampens svingbare sektion, når den svingbare sektion er i den anden position, og - en positioneringscylinder forbundet med V-dørrampens svingbare sektion, hvori positioneringscylinderen er indrettet til at positionere den mindst ene rørsamling i den svingbare sektion.An offline assembly of oilfield pipe assemblies on a drilling platform structure, comprising: - a V-door ramp associated with the drilling platform construction, said V-door ramp having a stationary section and a pivotal section, wherein the pivotal section is adapted to pivot between a first position and second position; - at least one support cylinder with a first end and a second end, the first end of which is pivotally connected to the drilling platform structure and the second end pivotally connected to the pivotal section of the V-door ramp, characterized in that the structure further comprises: - a holding means for attaching of at least one pipe assembly in the pivotal section of the V-door ramp when the pivotal section is in the second position, and - a positioning cylinder connected to the pivotal section of the V-door ramp, wherein the positioning cylinder is arranged to position the at least one pipe joint in the pivotal section. 2. System ifølge krav 1, hvori V-dørrampens svingparti er på linie med V-dørrampens stationære sektion i den første position.The system of claim 1, wherein the pivot portion of the V-door ramp is in line with the stationary section of the V-door ramp in the first position. 3. System ifølge krav 2, hvori den mindst ene støttecylinder er i en udskudt position, når V-dørrampens svingbare sektion er i den første position.The system of claim 2, wherein the at least one support cylinder is in a deferred position when the pivotal section of the V-door ramp is in the first position. 4. System ifølge krav 1, hvori V-dørrampens svingbare sektion er i en i det væsentlige lodret stilling i den anden position.The system of claim 1, wherein the pivotal section of the V-door ramp is in a substantially vertical position in the second position. 5. System ifølge krav 4, hvori den mindst ene støttecylinder er i en helt indtrukket position, når V-dørrampens svingbare sektion er i den anden position.The system of claim 4, wherein the at least one support cylinder is in a fully retracted position when the pivotal section of the V-door ramp is in the second position. 6. System ifølge krav 1, hvori holdeorganet omfatter en stang, som er hængselforbundet med V-dørrampens svingbare sektion, og en klinkemekanisme.The system of claim 1, wherein the retaining means comprises a rod hingedly connected to the pivotal section of the V-door ramp and a latching mechanism. 7. System ifølge krav 6, hvori holdeorganets stang bevæges fra en første position, i hvilken V-dørrampens svingbare sektion i stand til at modtage den mindst ene rørsamling, til en anden position, i hvilken stangen går i indgreb med klinkemeka-nismen for at fastgøre den mindst ene rørsamling i V-dørrampens svingbare sektion, når den svingbare sektion er i den anden position.A system according to claim 6, wherein the rod of the retaining member is moved from a first position in which the pivotal section of the V-door ramp is capable of receiving the at least one pipe assembly to a second position in which the rod engages the latch mechanism to secure the at least one pipe assembly in the pivotal section of the V-door ramp when the pivotal section is in the second position. 8. System ifølge krav 1, hvori den første ende af den mindst ene støttecylinder er svingbart forbundet med boreplatform konstruktionen med en tapsamling.The system of claim 1, wherein the first end of the at least one support cylinder is pivotally connected to the drilling platform construction with a tapping assembly. 9. System ifølge krav 1, hvori den anden ende af den mindst ene støttecylinder er svingbart forbundet med V-dørrampens svingbare sektion med en tapsamling.The system of claim 1, wherein the other end of the at least one support cylinder is pivotally connected to the pivotal section of the V-door ramp with a tapping assembly. 10. System ifølge krav 1, yderligere omfattende en hævet platform med en boreassistent afjern monteret derpå.The system of claim 1, further comprising a raised platform with a drill assisted iron mounted thereon. 11. System ifølge krav 1, yderligere omfattende en rørelevator.The system of claim 1, further comprising a pipe elevator. 12. System ifølge krav 11, hvori rørelevatoren hæves eller sænkes af et spil.The system of claim 11, wherein the tube elevator is raised or lowered by a winch. 13. System ifølge krav 11, hvori rørelevatoren hæves eller sænkes af en brotrolley forbundet med en hævet platform, som er forbundet med en mast i boreplatform konstruktionen.The system of claim 11, wherein the tubular elevator is raised or lowered by a bridge roller connected to a raised platform connected to a mast in the drilling platform construction. 14. System ifølge krav 1, yderligere omfattende mindst et opbevaringsstativ forbundet med boreplatformkonstruktionens mast, hvor den mindst et opbevaringsstativ er indrettet til offline opbevaring af en stand af rørføringer bestående af flere rør samlet med hinanden.The system of claim 1, further comprising at least one storage rack connected to the mast of the drilling platform structure, wherein the at least one storage rack is adapted for offline storage of a plurality of tubes consisting of several tubes assembled together. 15. System ifølge krav 1, yderligere omfattende mindst et støtteelement, som strækker sig fra boreplatformskonstruktionen til V-dørrampens stationære sektion.The system of claim 1, further comprising at least one support member extending from the drilling platform structure to the stationary section of the V-door ramp. 16. System ifølge krav 1, hvori den stationære sektion støtter mindst en rørsamling, og den svingbare sektion støtter mindst en rørsamling og er svingbar i forhold til boreplatformkonstruktionen, og hvori holdeorganet omfatter en holdemekanisme, der omfatter en stang, som er svingbart forbundet med V-dørrampens svingbare sektion og en klinkemekanisme, hvori stangen og klinkemekanismen samvirker til fastgørelse af den mindst ene rørsamling i den svingbare sektion, hvilket system omfatter: - en rørelevator til at hæve og sænke mindst en rørsamling, - en bevægelig jernboreassistent, som kan udskydes sådan, at den griber en af rørsamlingerne understøttet af rørelevatoren og en af de mindst ene rørsamlinger i V-dørrampens svingbare sektion, og - mindst et opbevaringsstativ, som er forbundet med en mast i boreplatformskonstruktionen.The system of claim 1, wherein the stationary section supports at least one pipe assembly and the pivotal section supports at least one pipe assembly and is pivotable with respect to the drilling platform structure, and wherein the retaining means comprises a holding mechanism comprising a rod pivotally connected to V - the swinging section of the door ramp and a latching mechanism in which the rod and latching mechanism cooperate to secure the at least one pipe joint in the pivoting section, which system comprises: - a pipe elevator for raising and lowering at least one pipe joint, - a movable iron drill assistant which can be extended it engages one of the pipe joints supported by the pipe elevator and one of the at least one pipe joints in the swing door section of the V-door ramp, and - at least one storage rack connected to a mast in the drilling platform structure. 17. System ifølge krav 1, hvori V-dørrampens svingbare sektion er på linie med V-dørrampens stationære sektion, når den mindst ene støttecylinder er i en udskudt position.The system of claim 1, wherein the pivotal section of the V-door ramp is in line with the stationary section of the V-door ramp when the at least one support cylinder is in a deferred position. 18. System ifølge krav 16, hvori V-dørrampens svingbare sektion er i en i det væsentlige lodret stilling, når den mindst ene støttecylinder er i en helt indtrukket position.The system of claim 16, wherein the pivotal section of the V-door ramp is in a substantially vertical position when the at least one support cylinder is in a fully retracted position. 19. System ifølge krav 16, hvori holdemekanismens stang bevæges fra en første position, i hvilken V-dørrampens svingbare sektion er i stand til at modtage den mindst ene rørsamling, til en anden position, i hvilken stangen går i indgreb med klinkemekanismen for at fastgøre den mindst en rørsamling i V-dørrampens svingbare sektion, når den svingbare sektion er i den i det væsentlige lodrette stilling.The system of claim 16, wherein the rod of the retaining mechanism is moved from a first position in which the pivotal section of the V-door ramp is capable of receiving the at least one tube assembly to a second position in which the rod engages the latching mechanism to secure. the at least one pipe assembly in the pivotal section of the V-door ramp when the pivotal section is in the substantially vertical position. 20. System ifølge krav 16, hvori den første ende af den mindst ene støttecylinder er svingbart forbundet med boreplatformkonstruktionen med en tapforbindelse.The system of claim 16, wherein the first end of the at least one support cylinder is pivotally connected to the drilling platform structure with a pin connection. 21. System ifølge krav 16, hvori den første ende af den mindst ene støttecylinder er svingbart forbundet med V-dørrampens svingbare sektion med en tapforbindelse.The system of claim 16, wherein the first end of the at least one support cylinder is pivotally connected to the pivotal section of the V-door ramp with a pin connection. 22. System ifølge krav 16, hvori jernboreassistenten er monteret på en hævet platform.The system of claim 16, wherein the iron drill assistant is mounted on a raised platform. 23. System ifølge krav 16, hvori rørelevatoren hæves eller sænkes af et spil.The system of claim 16, wherein the tube elevator is raised or lowered by a winch. 24. System ifølge krav 16, hvori rørelevatoren hæves eller sænkes af en brotrolley forbundet med en hævet platform, som er forbundet med en mast i boreplatform konstruktionen.The system of claim 16, wherein the tube lift is raised or lowered by a bridge roller connected to a raised platform connected to a mast in the drilling platform construction. 25. System ifølge krav 16, hvori det mindst ene opbevaringsstativ er indrettet til offline opbevaring af en rørstand bestående af flere rør samlet med hinanden.The system of claim 16, wherein the at least one storage rack is arranged for offline storage of a tube stand consisting of several tubes assembled together. 26. System ifølge krav 16, yderligere omfattende mindst et støtteelement, som strækker sig fra boreplatformskonstruktionen til V-dørrampens stationære sektion.The system of claim 16, further comprising at least one support member extending from the drilling platform structure to the stationary section of the V-door ramp. 27. Fremgangsmåde til offline sammenbygning af oliefeltrør på en boreplatformkonstruktion, omfattende: - tilvejebringelse af en V-dørrampe forbundet med boreplatformkonstruktionen, hvilken V-dørrampe har en stationær sektion og en svingbar sektion, - understøtning af mindst to rørsamlinger på V-dørrampens stationære sektion, kendetegnet ved, at fremgangsmåden yderligere omfatter: - bevægelse af mindst en af de to rørsamlinger til V-dørrampens svingbare sektion, - fastgørelse af den mindst ene rørsamling på V-dørrampens svingbare sektion, - svingning af V-dørrampens svingbare sektion fra en første position til en anden position, - hævning af en af de mindst to rørsamlinger støttet på V-dørrampens stationære sektion, sådan at rørsamlingen positioneres over V-dørrampens svingbare sektion, og - sammenkobling af rørsamlingen fastgjort på V-dørrampens svingbare sektion med rørsamlingen hævet over V-dørrampens svingbare sektion for at skabe en rørstand.A method of offline assembly of oilfield pipes on a drilling platform structure, comprising: - providing a V-door ramp associated with the drilling platform construction, said V-door ramp having a stationary section and a pivotal section, - supporting at least two pipe joints on the V-door stationary section. , characterized in that the method further comprises: - movement of at least one of the two pipe joints to the pivotal section of the V-door ramp, - attaching the at least one pipe joint to the pivotal section of the V-door ramp, - swinging of the pivotal section of the V-door ramp from a first position to another position, - raising one of the at least two pipe joints supported on the stationary section of the V-door ramp such that the pipe joint is positioned over the pivotal section of the V-door ramp, and - coupling the pipe joint fixed on the pivotal section of the V door ramp with the pipe joint raised above The swivel section of the V-door ramp to create a pipe stand. 28. Fremgangsmåde ifølge krav 27, yderligere omfattende bevægelse af rørstanden til et opbevaringsstativ indrettet til opbevaring af rørstanden, hvori opbevaringsstativet er forbundet med en mast i boreplatformskonstruktionen.The method of claim 27, further comprising moving the pipe stand to a storage rack adapted to store the pipe stand, wherein the storage rack is connected to a mast in the drilling platform structure. 29. Fremgangsmåde ifølge krav 27, yderligere omfattende udskydning eller indtrækning af en positioneringscylinder forbundet med V-dørrampens svingbare sektion for at placere den mindste ene rørsamling indenfor den svingbare sektion.The method of claim 27, further comprising pushing or retracting a positioning cylinder connected to the pivotal section of the V-door ramp to place the smallest one pipe assembly within the pivotal section. 30. Fremgangsmåde ifølge krav 27, hvori V-dørrampens svingbare sektion svinges til den anden position ved indtrækning af en støttecylinder med en første ende forbundet med boreplatformkonstruktionen og en anden ende forbundet med den svingbare sektion.The method of claim 27, wherein the pivotal section of the V-door ramp is pivoted to the second position by retracting a support cylinder with a first end connected to the drilling platform structure and a second end connected to the pivotal section. 31. Fremgangsmåde ifølge krav 27, hvori rørsamlingen hæves fra V-dørrampens stationære sektion til en position over V-dørrampens svingbare sektion ved at forbinde en rørelevator til rørsamlingen og hæve rørelevatoren.The method of claim 27, wherein the pipe assembly is raised from the stationary section of the V-door ramp to a position above the pivotal section of the V-door ramp by connecting a pipe elevator to the pipe assembly and raising the pipe elevator. 32. Fremgangsmåde ifølge krav 31, hvori rørelevatoren hæves eller sænkes med et spil.The method of claim 31, wherein the tube elevator is raised or lowered by a winch. 33. Fremgangsmåde ifølge krav 31, hvori rørelevatoren hæves eller sænkes med en brotrolley forbundet med en hævet platform, som er forbundet med en mast i boreplatform konstruktionen.The method of claim 31, wherein the tube lift is raised or lowered by a bridge roller connected to a raised platform connected to a mast in the drilling platform construction. 34. Fremgangsmåde ifølge krav 31, yderligere omfattende indgreb af en af de mindst ene rørsamlinger fastgjort i V-dørrampens svingbare sektion og indgreb af rørsamlingen hævet over V-dørrampens svingbare sektion med en jernboreassi-stent.The method of claim 31, further comprising engaging one of the at least one pipe joint fixed in the pivotal section of the V-door ramp and engagement of the pipe joint raised above the pivotal section of the V-door ramp with an iron drilling assistant. 35. Fremgangsmåde ifølge krav 34, yderligere omfattende betjening af jernbore-assistenten til sammenbygning af forbindelsen mellem rørsamlingerne, som er i indgreb med jernboreassistenten.The method according to claim 34, further comprising operating the iron drill assistant to assemble the connection between the pipe joints engaged with the iron drill assistant. 36. Fremgangsmåde ifølge krav 27, hvori fremgangsmåden omfatter: - understøtning af en flerhed af rørsamlinger på V-dørrampens stationære sektion, - flytning af mindst to af de flere rørsamlinger til V-dørrampens svingbare sektion, - fastgørelse af de mindst to rørsamlinger på V-dørrampens svingbare sektion, - svingning af V-dørrampens svingbare sektion fra en første position til en anden position, hvori den svingbare sektion er i en i det væsentlige lodret stilling i den anden position, - hævning af en af de flere rørsamlinger støttet på V-dørrampens stationære sektion, sådan at rørsamlingen er i en i det væsentlige lodret stilling over V-dørrampens svingbare sektion, - forbindelse af en af de mindst to rørsamlinger fastgjort på V-dørrampens svingbare sektion til rørsamlingen hævet over V-dørrampens svingbare sektion for skabelse af en tostrenget rørstand, - hævning af den tostrengede rørstand, sådan at den tostrengede rørstand er i en i det væsentlige lodret stilling over V-dørrampens svingbare sektion, - forbindelse af en af de mindst to rørsamlinger fastgjort på V-dørrampens svingbare sektion til den tostrengede rørstand hævet over den svingbare sektion for skabelse af en trestrenget rørstand.The method of claim 27, wherein the method comprises: - supporting a plurality of pipe joints on the stationary section of the V door ramp, - moving at least two of the plurality of pipe joints to the pivotal section of the V door ramp, - attaching the at least two pipe joints to the V - swinging section of the door ramp, - swinging of the swinging section of the V door ramp from a first position to a second position, wherein the swingable section is in a substantially vertical position in the second position, - raising one of the several pipe joints supported on V - the stationary section of the door ramp, such that the pipe assembly is in a substantially vertical position over the pivotal section of the V door ramp, of a two-stranded tube stand, - raising the two-stranded tube stand such that the two-stranded tube stand is in one in that being vertical position over the pivotal section of the V-door ramp, - connection of one of the at least two pipe joints fixed on the pivotal section of the V-door ramp to the two-string pipe stand raised above the pivotal section to create a three-string pipe stand. 37. Fremgangsmåde ifølge krav 36, yderligere omfattende bevægelse af den trestrengede rørstand til et opbevaringsstativ indrettet til opbevaring af rørstanden, hvori opbevaringsstativet er forbundet med en mast på boreplatformkonstruktionen.The method of claim 36, further comprising moving the three-stranded tube stand to a storage rack adapted to store the tube stand, wherein the storage rack is connected to a mast on the drill platform structure. 38. Fremgangsmåde ifølge krav 36, yderligere omfattende udskydning eller indtrækning af en positioneringscylinder forbundet med V-dørrampens svingbare sektion for at placere den mindste ene rørsamling indenfor den svingbare sektion.The method of claim 36, further comprising extending or retracting a positioning cylinder connected to the pivotal section of the V-door ramp to position the smallest one pipe assembly within the pivotal section. 39. Fremgangsmåde ifølge krav 36, hvori V-dørrampens svingbare sektion svinges til den anden position ved indtrækning af en støttecylinder med en første ende forbundet med boreplatformkonstruktionen og en anden ende forbundet med den svingbare sektion.The method of claim 36, wherein the pivotal section of the V-door ramp is pivoted to the second position by retracting a support cylinder with a first end connected to the drilling platform structure and a second end connected to the pivotal section. 40. Fremgangsmåde ifølge krav 36, hvori rørsamlingen hæves fra V-dørrampens stationære sektion til en position over V-dørrampens svingbare sektion ved at forbinde en rørelevator til rørsamlingen og hæve rørelevatoren.The method of claim 36, wherein the pipe assembly is raised from the stationary section of the V-door ramp to a position above the pivotal section of the V-door ramp by connecting a pipe elevator to the pipe assembly and raising the pipe elevator. 41. Fremgangsmåde ifølge krav 36, hvori den tostrengede rørstand hæves til en position over V-dørrampens svingbare sektion ved at hæve rørelevatoren.The method of claim 36, wherein the two-strand pipe stand is raised to a position above the pivotal section of the V-door ramp by raising the pipe elevator. 42. Fremgangsmåde ifølge krav 41, hvori rørelevatoren hæves eller sænkes med et spil.The method of claim 41, wherein the tube elevator is raised or lowered by a winch. 43. Fremgangsmåde ifølge krav 41, hvori rørelevatoren hæves eller sænkes med en brotrolley forbundet med en hævet platform, som er tilsluttet en mast i boreplatform konstruktionen.The method of claim 41, wherein the tubular elevator is raised or lowered by a bridge roller connected to a raised platform connected to a mast in the drilling platform structure. 44. Fremgangsmåde ifølge krav 36, yderligere omfattende indgreb af en af de mindst to rørsamlinger fastgjort i V-dørrampens svingbare sektion og indgreb af rørsamlingen hævet over den svingbare sektion med en jernboreassistent.The method of claim 36, further comprising engaging one of the at least two pipe joints fixed in the pivotal section of the V-door ramp and engagement of the pipe joint raised above the pivotal section with an iron drilling assistant. 45. Fremgangsmåde ifølge krav 44, yderligere omfattende betjening af jernbore-assistenten til sammenbygning af forbindelsen mellem rørsamlingerne, som er i indgreb med jernboreassistenten, for skabelse af den tostrengede rørstand.The method according to claim 44, further comprising operating the iron drill assistant to assemble the connection between the pipe joints engaging the iron drill assistant to create the two-stranded pipe stand. 46. Fremgangsmåde ifølge krav 45, yderligere omfattende indgreb af en af de mindst to rørsamlinger fastgjort i V-dørrampens svingbare sektion og en af rørsamlingerne omfattende den tostrengede rørstand med en jernboreassistentThe method of claim 45, further comprising engaging one of the at least two pipe joints fixed in the pivotal section of the V-door ramp and one of the pipe joints comprising the two-stranded pipe stand with an iron drill assistant. 47. Fremgangsmåde ifølge krav 46, yderligere omfattende betjening af jernbore-assistenten til sammenbygning af forbindelsen mellem rørsamlingerne, som er i indgreb med jernboreassistenten, for skabelse af den trestrengede rørstand.The method of claim 46, further comprising operating the iron drill assistant to assemble the connection between the pipe joints engaging the iron drill assistant to create the three-stranded pipe stand. 48. Fremgangsmåde ifølge krav 27, yderligere omfattende understøtning af mindst en rørsamling på V-dørrampens svingbare sektion.The method of claim 27, further comprising supporting at least one pipe assembly on the pivotal section of the V-door ramp. 49. Fremgangsmåde til håndtering af samlinger af oliefeltrør offline, omfattende: - tilvejebringelse af en V-dørrampe, som er forbundet med boreplatformkonstruktionen, hvilken V-dørrampe har en svingbar sektion og en stationær sektion, - understøtning af mindst to rørsamlinger på V-dørrampens stationære sektion, - understøtning af mindst en rørsamling på V-dørrampens svingbare sektion, - fastgørelse af den mindst ene rørsamling på V-dørrampens svingbare sektion, - svingning af V-dørrampens svingbare sektion fra en første position til en anden position.A method of handling oilfield pipe assemblies offline, comprising: - providing a V-door ramp connected to the drilling platform construction, said V-door ramp having a pivotable section and a stationary section, - supporting at least two pipe joints on the V-door ramp. stationary section, - supporting at least one pipe assembly on the swing door of the V door ramp, - attaching the at least one pipe assembly on the swing door section of the V door ramp, - swinging the swing door section of the V door ramp from a first position to a second position.