WO2019139476A1 - Navire de forage - Google Patents

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Publication number
WO2019139476A1
WO2019139476A1 PCT/NL2019/050012 NL2019050012W WO2019139476A1 WO 2019139476 A1 WO2019139476 A1 WO 2019139476A1 NL 2019050012 W NL2019050012 W NL 2019050012W WO 2019139476 A1 WO2019139476 A1 WO 2019139476A1
Authority
WO
WIPO (PCT)
Prior art keywords
bop
firing line
transport cart
support floor
tower
Prior art date
Application number
PCT/NL2019/050012
Other languages
English (en)
Inventor
Joop Roodenburg
David ROODENBURG
Bart Jan MEIJER
Original Assignee
Itrec B.V.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Itrec B.V. filed Critical Itrec B.V.
Publication of WO2019139476A1 publication Critical patent/WO2019139476A1/fr

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B33/00—Sealing or packing boreholes or wells
    • E21B33/02—Surface sealing or packing
    • E21B33/03—Well heads; Setting-up thereof
    • E21B33/06—Blow-out preventers, i.e. apparatus closing around a drill pipe, e.g. annular blow-out preventers
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B19/00—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables

Definitions

  • the present invention relates to a transport cart for a blowout preventer (BOP) aboard a drilling station such as a rig, platform, semisubmersible or vessel.
  • BOP blowout preventer
  • BOP blowout preventer
  • valving arrangement in order to be able to prevent any gas and oil found under pressure from freely and incontrollable “blowing” or escaping out into the sea and the consequences this will have.
  • the BOP can control and prevent any undesirable flow out of the hole by either partly closing off the flow or by cutting the riser string, or by cutting the riser string and the drill string to thus sealing the hole completely.
  • Blowout preventers exist which weigh about 170 tons and have a height of 16 m.
  • This operation presents a problem because, due to the size of the BOP, transporting and lowering the BOP takes up much time and effort. Furthermore, the BOP can easily be subjected during the transport and installation process. In addition, it is very difficult to give the BOP a functional test before it is mounted.
  • the invention furthermore provides a BOP transport cart according to claim 22 and a method for installing a BOP according to claim 23.
  • the offshore vessel according to the claimed invention comprises a BOP transport cart, which BOP transport cart comprises a BOP support floor, which BOP support floor can be pivoted in a substantially downward direction from a support position, for supporting a BOP, into a clearance position, for allowing a Bop to be lowered through the BOP support cart.
  • BOP transport cart comprises a BOP support floor, which BOP support floor can be pivoted in a substantially downward direction from a support position, for supporting a BOP, into a clearance position, for allowing a Bop to be lowered through the BOP support cart.
  • the pivoting BOP support floor allows for a quick and efficient release of the BOP from the BOP transport cart.
  • the BOP transport cart does not have to be removed, e.g. skidded, from its position at the firing line, but can stay in place. This saves time.
  • an offshore drilling vessel comprises: a hull having a moonpool, a deck structure defining a main deck, a firing line hoist system, a mobile working deck, a BOP storage, a BOP transport track, and a BOP transport cart.
  • the firing line hoist system is mounted on the hull at said moonpool.
  • the firing line hoist system comprises:
  • a tower having a top side and a base connected to the hull of the drilling vessel, wherein the tower has a hollow construction with a first side and an opposed second side, and
  • first hoisting device supported by the tower and having a load attachment device displaceable supported by the tower, one or more cables and one or more associated winches to manipulate the position of the load attachment device relative to the tower in a vertical direction along a first firing line, which first firing line extends on the outside of, and adjacent to, the first side of the tower and through the moonpool, and wherein the first hoisting device is adapted for raising and lowering a BOP along the first firing line.
  • the mobile working deck is provided at the first side of the tower, which in an active position covers a portion of the moonpool at said first side of the tower while the first firing line extends through an opening in said mobile working deck.
  • the BOP storage is located adjacent the moonpool.
  • the mobile working deck is movable into a non-active position, which allows for the BOP to be brought from the BOP storage into the first firing line and to be manipulated by the first hoisting device.
  • the BOP transport track extends between the BOP storage and the first firing line to enable transporting the BOP between the BOP storage and the first firing line.
  • the BOP transport track comprises a set of rails located on opposite sides of the first firing line.
  • the BOP transport cart is movably supported by the BOP transport track for transporting the BOP between the BOP storage and the first firing line.
  • the BOP transport cart comprises:
  • each guide having a pivot end and a securing end;
  • BOP support floor which BOP support floor extends along a longitudinal axis between a pivot end and a securing end
  • the BOP support floor is located between the guides, and is at the pivot end pivotably connected with the pivot end of the two guides such that the support floor can pivot relative to the guides about a support floor pivot axis between a support position for supporting the BOP and a clearance position for allowing the BOP to be lowered between the two guides of the BOP transport cart,
  • said support floor pivot axis extends in a direction perpendicular to the BOP transport track, and the BOP support floor is pivoted in a substantially downward direction from the support position into the clearance position, and
  • the longitudinal axis of the BOP support floor extends substantially parallel to the BOP transport track and thus has a substantially horizontal orientation, and, when the BOP support floor is in the clearance position, the BOP support floor extends substantially perpendicular to the BOP transport track and thus has a substantially vertical orientation;
  • a BOP support floor securing device e.g. comprising a slide or pins, to fixate the BOP support floor in the support position, preferably by securing the securing end of the support floor and the securing end of the guides relative to each other.
  • the BOP transport cart does not need to be removed from the position in which it supports the BOP in the firing line to enable the BOP to be lowered along that firing line. Furthermore, because the BOP support floor is located between the guides supporting the cart on the BOP transport track, the BOP support floor can be pivoted in a downward direction to bring it into the release position. Thus, the BOP needs to be lifted only to the extent that it no longer is supported by the BOP support floor, to enable the BOP support floor to be lowered into the clearance position.
  • the BOP does not have to be lifted to clear the trajectory of movement of the BOP support floor, which for example would have been the case if the BOP support floor is to be pivoted in an upward direction to bring I into the clearance position.
  • the overall process of transporting the BOP from its storage position into the firing line, and lowering it along that firing line is made more efficient.
  • the BOP transport cart is a double function BOP transport cart, configured for supporting the BOP in a transport position, in which transport position the BOP is supported from below by the BOP support floor in the transport position such that the BOP is located mainly above the BOP transport track, and in a transfer position, in which transfer position the BOP is suspended at a top end thereof such that the BOP is located mainly below the BOP transport track and the BOP support floor is in the clearance position.
  • the double function BOP transport cart is configured to support the BOP from below on a BOP support floor and, in an alternative configuration, support the BOP from above, preferably with a yoke.
  • the BOP is at least mainly located above the BOP transport cart, which makes the BOP readily available, for example for maintenance or testing when supported in a storage location.
  • the BOP is at least mainly located below the BOP transport cart, which allows for the BOP to be transported below a tower between a first firing line, located on a first side of the tower, and a second firing line, located on a second, opposite side of the tower.
  • the BOP transport cart when the BOP transport cart is embodied as a double function BOP transport cart, it allows for transporting the BOP between storage and firing line, and also for transporting the suspended BOP below deck, e.g. between a first and second firing line.
  • the double function BOP transport cart can support a BOP in the storage location, transport a BOP between the storage location and the firs firing line, and transfer a BOP between a first firing line and a second firing line. All can be done with a single BOP transport cart.
  • the double function BOP transport cart in case of a double firing line hoist system, allows for the BOP to be stored away from the drilling site, i.e. the side of the tower with the firing line used for drilling, and to be stored at the firing line used mainly for alternative activities, e.g. drilling support activities or riser building.
  • the double function BOP support cart is not only configured to support a BOP at a top side thereof, but as an alternative, or in addition, to engage a tubular, e.g. a riser section, and support the riser section and a BOP supported by that riser section.
  • the BOP transport cart can also be used to transport a riser, provided with a BOP at a lower end thereof, between firing lines.
  • the BOP transport cart comprises a yoke for suspending the BOP, when in the transfer position, at or near a top end of the BOP, and preferably comprises a yoke securing device, e.g. comprising a slide or pins, to fixate the yoke in the active position, preferably by securing a securing end of the yoke and the securing end of the guides relative to each other.
  • the yoke is a passive U-shaped receiver, for engaging the top end of the BOP or a top end of a tubular connected with the BOP.
  • the U-shape can be dimensioned to engage the circumference of a specific type of tubular near the top end thereof, and such that a flange of that tubular can rest on the top side of the yoke to thus support the tubular and the BOP connected to the bottom end of the tubular.
  • the yoke is provided with a securing device, for example a swing door, hooking device or clamping device, to secure the top end of a tubular or of the BOP in the yoke, in particular when the BOP is being transferred between firing lines.
  • a securing device for example a swing door, hooking device or clamping device, to secure the top end of a tubular or of the BOP in the yoke, in particular when the BOP is being transferred between firing lines.
  • the securing device is a hydraulically operated securing device.
  • the yoke is configured as a clamping device, comprising multiple clamping elements that can be pushed against a section of a tubular or BOP received in the yoke, to thus secure, and optionally support the tubular and/or BOP in the yoke.
  • the clamping device is a hydraulically operated clamping device.
  • the yoke is not only configured to engage and support a tubular, but is also dimensioned to support a string of tubulars, e.g. a riser string supporting a BOP at a bottom end thereof.
  • the BOP transport cart can be used to transfer a riser string with BOP between a first and a second firing line. This for example allows for building a riser string in the second firing line while performing well related activities in the first firing line, having the riser string, more in particular the BOP, ready when it has to be placed on the wellhead.
  • the BOP transport cart can also be used in assembling, or
  • the yoke is pivotably supported between the guides such that the yoke can pivot about a yoke pivot axis, said yoke pivot axis extending perpendicular to the BOP transport track, between a passive position, in which the yoke has a substantially vertical orientation, and preferably extends adjacent the BOP supported in the transport position on the BOP support floor, and an active position, in which the yoke has a substantially horizontal orientation for suspending the BOP at or near a top end thereof in the transfer position and/or for suspending a tubular or connector coupled with a top end of the BOP.
  • the yoke can be brought quickly and efficiently into and out of the active position.
  • the yoke when in the inactive positon, is located above the BOP support floor when in the clearance position. Pivoting the BOP support floor in a downward direction to move it into the clearance position allows for the yoke, more in particular the yoke when in the inactive positon, to be located above the BOP support floor, and thus position them at the same side of the BOP transport cart.
  • the yoke pivot axis (34) coincides with the BOP support floor pivot axis (30). This allows for a compact configuration of the BOP transport cart.
  • the yoke and the BOP support floor are fixed relative to each other, such that when the BOP support floor is lowered from the support position into the clearance position, the yoke is pivoted from the passive position into the active position.
  • the yoke is provided with a yoke securing device, e.g. comprising a slide or pins, to fixate the yoke in the active position, e.g. by securing a securing end of the yoke and the securing end of the guides relative to each other.
  • a part of the yoke is secured relative to the frame of the BOP transport cart to thus fix the yoke in the active position, and transfer the load of the BOP supported by the yoke to the frame of the BOP transport cart.
  • yoke and BOP transport cart can be provided with one or more stops, such that the yoke, when in the active position, rests on the frame of the BOP transport cart, more in particular against the stops provided on the frame of the BOP transport cart, to thus hold the yoke in position while supporting the BOP, and transferring weight loads from the yoke to the frame of the BOP transport cart, and ultimately form the yoke to the BOP transport track.
  • the firing line hoist system is a multiple firing line hoist system comprising a second hoisting device supported by the tower and having a load attachment device displaceable supported by the tower, one or more cables and one or more associated winches to manipulate the position of the load attachment device relative to the tower in a vertical direction along a second firing line, which second firing line extends on the outside of, and adjacent to, the second side of the tower and through the moonpool,
  • the base of the tower is connected to the hull of the drilling vessel at the moonpool at opposite sides thereof, such that the first side of the tower and the second side of the tower bridge the moonpool in a lateral direction thereof.
  • the BOP transport track is located below the main deck, e.g. supported by and located in the deck structure defining the main deck, preferably at such a distance below the main deck that the BOP extends above the main deck when supported by the BOP transport cart in the BOP storage.
  • the BOP transport track preferably further extends below the base of the tower between the first firing line and the second firing line to enable transporting the BOP, when supported in the transfer position, between the first firing line and the second firing line.
  • the BOP transport cart can be used to transfer the BOP below the main deck between the two firing lines of the tower.
  • the BOP support floor is provided with an upstanding BOP guide frame, which BOP guide frame is located alongside the BOP supported by the BOP support floor in the support position, and which BOP guide frame is located between the BOP and the guides of the BOP transport cart and/or the BOP transport track when the BOP support floor is in the clearance position and the BOP is lowered along the first firing line through the BOP transport cart.
  • the BOP transport cart is not only used to move the BOP into and out of the firing line, but in addition prevents the BOP from contacting the BOP transport track or the deck structure while the BOP is being lowered by the hoisting device.
  • the guide frame protects the BOP transport track and the deck structure from being damaged by the BOP.
  • the BOP guide frame is provided with two securing ends, which two securing ends are located adjacent the securing ends of the guides when the BOP support floor is in the clearance position, and a support floor securing device, e.g. comprising a slide or pins, is provided for securing the securing ends of the guide frame and the securing ends of the guides relative to each other to thus fixate the BOP support floor in the clearance position, and preferably thus fixate the yoke in the active position.
  • a support floor securing device e.g. comprising a slide or pins
  • the frame is secured in the same way, and at the same location, as the BOP support floor is secured, when in the BOP support position.
  • the BOP support floor comprises a BOP test stump that allows for the BOP to rest thereon, and preferably a BOP test stump lifting device, preferably comprising one or more hydraulic cylinders, being associated with the BOP test stump to allow for vertical displacement of the BOP test stump with the BOP resting thereon.
  • a BOP is typically mounted on a well head.
  • the BOP test stump is to mimic such a wellhead, enabling the BOP to be supported by the BOP support cart in the same way it would be supported when mounted on a wellhead.
  • the BOP transport cart is configured to enable testing of the BOP while supported by the BOP support cart.
  • the BOP support cart there is no need to remove the BOP from the BOP support cart prior to bringing it into the firing line from storage.
  • the BOP storage is located adjacent or above the moonpool, and adjacent the firing line, more in particular adjacent the mobile working deck located in the firing line.
  • the mobile working deck In an active position, the mobile working deck is located in the firing line, preferably between the BOP storage and the tower. Thus, it provides a deck surface for personal and equipment adjacent the firing line.
  • the deck surface defined by the mobile working deck is level with the deck surface of the main deck, when the mobile working deck is in the active position.
  • the mobile working deck can be pivoted, lifted or slid into a passive position, such that it does no longer forms an obstacle for the BOP to be moved into and/or lowered along the firing line.
  • the working deck is configured to be moved back into the active position, providing a deck surface adjacent the firing line, once the BOP has been lowered below the main deck.
  • the mobile working deck is provided with a riser string suspension device that allows to suspend a riser string, preferably with a BOP attached to the lower end of the riser string, from the mobile working deck in the first firing line.
  • the mobile working deck is provided with lifting means, so that in a raised non-active position of the mobile working deck the BOP can be brought from the BOB storage to underneath the mobile working deck into the first firing line.
  • the mobile working deck is movable in lateral direction, so that in a non active position of the mobile working deck the deck is cleared from the first firing line.
  • the mobile working deck is pivotable in an upward direction, so that in a non-active position of the mobile working deck the deck is cleared from the first firing line.
  • the offshore drilling vessel has a stationary working deck at the second side of the tower, and wherein the active position of the mobile working deck is at substantially the same height as the stationary working deck.
  • the offshore drilling vessel comprises a riser handling gantry crane provided with riser upending device that allows to raise and lower a riser.
  • the offshore drilling vessel is provided with a rotary drilling drive, e.g. a top drive, at the second side of the tower and/or the first side of the tower.
  • a rotary drilling drive e.g. a top drive
  • a riser tensioner system is arranged at the second side of the tower, the riser tensioner system preferably comprising a set of hydraulic tensioner cylinders.
  • the drilling vessel is configured to support a riser at the second firing line.
  • a X-mas tree storage is present adjacent the moonpool, preferably on the main deck, and a X-mas tree transport device is provided for displacement of the X-mas tree into a firing line of the hoist system, preferably in the firing line and on the mobile working deck.
  • the X-mas tree transport device includes a set of rails, and an X- mas tree support frame is displaceable over said rails.
  • the invention furthermore provides a BOP transport cart, in particular a double function BOP transport cart as disclosed herein.
  • the invention provides a BOP transport cart for use in a drilling vessel according to the claimed invention and provides a double function BOP transport cart for use in a drilling vessel according to the claimed invention.
  • the invention furthermore provides a method for bringing a BOP in a firing line, using a BOP transport cart as disclosed herein.
  • the invention furthermore provides a method for mounting a BOP on a wellhead from an offshore drilling vessel, preferably using a drilling vessel according to the claimed invention, the method comprising:
  • the method comprises the steps:
  • Fig. 1 shows a schematic perspective view of an exemplary embodiment of a drilling vessel comprising a BOP transport cart according to the claimed invention
  • Fig. 2 shows a perspective view of a first exemplary embodiment of a BOP transport cart according to the claimed invention in a first configuration, i.e. with a BOP support floor in a support position
  • Fig. 3 shows a perspective view of the BOP transport cart of Fig. 2 in a second configuration, i.e. with the BOP support floor lowered in a clearance position;
  • Fig. 4 shows a side view of a second exemplary embodiment of a BOP transport cart according to the claimed invention in a first configuration, i.e. with a BOP support floor in a support position;
  • Fig. 5 shows a frontal view of the BOP transport cart of Fig. 4;
  • Fig. 6 shows a side view of the BOP transport cart of Fig. 4 in a second configuration, i.e. with the BOP support floor in a clearance position;
  • Fig. 7 shows a frontal view of the BOP transport cart of Fig. 6;
  • Fig. 8 shows an overall side view, i.e. including a BOP suspended from the BOP transport cart, of the BOP transport cart of Fig. 6;
  • Fig. 9 shows an overall frontal view of the BOP transport cart of Fig. 7;
  • Fig. 10 shows a perspective view of a third exemplary embodiment of a BOP transport cart according to the claimed invention in a first configuration, i.e. with a BOP support floor in a support position;
  • Fig. 11 shows a perspective view of the BOP transport cart of Fig. 10 in a second configuration, i.e. with the BOP support floor lowered in a clearance position;
  • Fig. 12 shows a cross sectional view in close up of the drilling vessel of Fig. 1 depicting a dual firing line hoist system, a BOP and a BOP transport cart in a first configuration, the BOP transport cart supporting the BOP in a BOP storage location;
  • Fig. 13 shows the cross sectional view of Fig. 12 with the BOP transport cart supporting the BOP in a firing line;
  • Fig. 14 shows the cross sectional view of Fig. 13 with the BOP transport cart in a second configuration and the BOP being lifted from the BOP transport cart by a first hoisting device
  • Fig. 15 shows the cross sectional view of Fig. 14, the hoisting device having lowered the BOP through the BOP transport cart and the BOP being suspended via a tubular from the BOP transport cart;
  • Fig. 16 shows an overall cross sectional view in close up, i.e. including the BOP suspended from the BOP transport cart, of Fig. 15;
  • Fig. 17 shows the overall cross sectional view in close up of Fig. 16, with the BOP support cart skidded into a second firing line;
  • Fig. 18 shows the overall cross sectional view in close up of Fig. 17, with the BOP, via a tubular, being supported in the second firing line by a second hoisting device;
  • Fig. 19 shows an alternative cross sectional view in close up of the drilling vessel of Fig. 1 depicting a first side of the dual firing line hoist system, and a BOP transport cart in a second configuration;
  • Fig. 20 shows a top view in detail of the vessel of Fig. 1 ;
  • Fig. 21 shows a cross sectional top view in detail of the drilling vessel of Fig. 1 ;
  • Fig. 22 shows a partial view of the top view of Fig. 20 in close up;
  • Fig. 23 shows a partial cross sectional side view of the vessel of Fig. 1 , depicting a mobile working deck and a x-mas tree in a storage location on a main deck;
  • Fig. 24 shows the partial cross sectional side view of Fig. 23, depicting a BOP transport cart in a first configuration in a first firing line supporting a BOP;
  • Fig. 25 shows a partial cross sectional side view of the vessel of Fig. 1 , depicting a BOP transport cart in a second configuration in a second firing line.
  • FIG. 1 shows a schematic perspective view of an exemplary embodiment of an offshore drilling vessel 1 comprising a BOP transport cart according to the claimed invention.
  • the vessel is shown in detail in other figures, for example figures 20 and 21 which show a top view in detail of the vessel and a cross sectional top view in detail of the vessel respectively.
  • the exemplary embodiment of the offshore drilling vessel shown in figure 1 comprises a hull 2 having a moonpool 3, a deck structure 4 defining a main deck 5, a firing line hoist system 6, a mobile working deck 18, a BOP storage 19, a BOP transport track 20, and a BOP transport cart 22.
  • the moonpool 3 and the BOP transport track 20 are not visible in figure 1 , but are shown in the ross sectional side view shown in for example figures 12-16.
  • the offshore drilling vessel is a semisubmersible, comprising a hull supporting a deck structure defining the main deck and the moonpool, which is essentially located below the deck structure.
  • the firing line hoist system 6 is mounted on the hull 2, in the embodiment shown is supported by the deck structure which is supported by the hull, at the moonpool 3.
  • the hoist system comprises a tower 7 having a top side 8 and a base 9 connected to the hull 2 of the drilling vessel, in the embodiment shown via the deck structure, the deck structure comprising beams supported by the hull of the vessel and supporting the tower 7.
  • the tower 7 has a hollow construction with a first side 10 and an opposed second side 11. Furthermore, in the exemplary embodiment shown, the firing line hoist system is a multiple firing line hoist system comprising a hoisting device, or first hoisting device 12 and a second hoisting device 112, the hoisting devices being located on opposite sides of the tower 7.
  • the first hoisting device 12 is supported by the tower 7 on a first side thereof.
  • the first hoisting device comprises a load attachment device 13 displaceable supported by the tower, one or more cables 14 and one or more associated winches 15 to manipulate the position of the load attachment device 13 relative to the tower in a vertical direction along a first firing line 16.
  • the first firing line 16 extends on the outside of, and adjacent to, the first side 10 of the tower 7 and through the moonpool 3.
  • the first hoisting device 12 is adapted for raising and lowering a BOP 17 along the first firing line 16.
  • the second hoisting device 112 supported by the tower 7 on a second side thereof.
  • the second hoisting device is configured similar to the first hoisting device.
  • the second hoisting device 112 comprises a load attachment device 113 displaceable supported by the tower 7, one or more cables 114 and one or more associated winches 115 to manipulate the position of the load attachment device 113 relative to the tower 7 in a vertical direction along a second firing line 116.
  • the second firing line 116 extends on the outside of, and adjacent to, the second side 11 of the tower 7 and through the moonpool 3.
  • the base 9 of the tower 7 is connected to the hull 2, via the deck structure, of the drilling vessel 1 at the moonpool 3 at opposite sides thereof, such that the first side 10 of the tower 7 and the second side 11 of the tower 7 bridge the moonpool in a lateral direction thereof.
  • the BOP transport track 20 extends between the BOP storage 19 and the first firing line 16 to enable transporting the BOP 17 between the BOP storage and the first firing line 16.
  • the BOP transport track 20 comprises a set of rails 21 located on opposite sides of the first firing line 16.
  • the BOP transport track 20 is located below the main deck, and is supported by and located in the deck structure defining the main deck.
  • the BOP transport track is located below the main deck at such a distance below the main deck 5 deck surface that the BOP 17 extends above the main deck 5 when supported by the BOP transport cart 22 in the BOP storage 19.
  • the firing line hoist system is a multiple firing line hoist system.
  • the BOP transport track 20 further extends below the base 9 of the tower 7 between the first firing line
  • the vessel 1 is furthermore provided with a mobile working deck 18, which is provided at the first side 10 of the tower 7.
  • a mobile working deck 18 In an active position, for example shown in figure 1 and in figure 23, the mobile working deck 18 covers a portion of the moonpool 3 at said first side of the tower 7 while the first firing line 16 extends through an opening in said mobile working deck 18.
  • the BOP storage 19 is located adjacent the moonpool 3 and the mobile working deck 18.
  • the mobile working deck 18 is movable into a non-active position, which allows for the BOP
  • a first exemplary embodiment of a BOP transport cart 22 according to the claimed invention is shown in figures 2 and 3.
  • An alternative embodiment of a BOP transport cart 22 according to the claimed invention is depicted in figures 4-9.
  • a third exemplary embodiment of a BOP transport cart 22 according to the claimed invention is depicted in figures 10-11.
  • the BOP transport cart 22 is configured to be movably supported by the BOP transport track 20, for transporting the BOP 17 between the BOP storage 19 and the first firing line 16.
  • the BOP transport cart 22 comprises two guides 23, in the embodiment shown embodied as legs extending along rails of the BOP transport track and provided with rollers for moveably supporting the BOP transport cart 22 on the BOP transport track 20.
  • Each guide has a pivot end 24 and a securing end 25.
  • the BOP transport cart furthermore comprises a BOP support floor 26, which BOP support floor 26 extends along a longitudinal axis 27 between a pivot end 28 and a securing end 29.
  • the BOP support floor 26 is located between the guides 23 and is at the pivot end pivotably connected with the pivot end of the two guides 23 such that the support floor 26 can pivot relative to the guides 23 about a support floor pivot axis 30 between a support position for supporting the BOP 17, which is depicted n figures 4 and 5, and a clearance position, which is depicted in figures 6 and 7, for allowing the BOP 23 to be lowered between the two guides 23 of the BOP transport cart 22, which process is depicted in figures 14 and 15.
  • the support floor pivot axis 30 extends in a direction perpendicular to the BOP transport track 20.
  • the BOP support floor 26 is pivoted in a substantially downward direction from the support position into the clearance position.
  • the longitudinal axis 27 of the BOP support floor 26 extends substantially parallel to the BOP transport track 20 and thus has a substantially horizontal orientation.
  • the BOP support floor 26 When the BOP support floor 26 is in the clearance position, the BOP support floor 26 extends substantially perpendicular to the BOP transport track 20 and thus has a
  • the Bop transport cart is provided with actuators 31 for pivoting the BOP support floor 26 between the support position and the clearance position.
  • the BOP transport cart is provided with a BOP support floor securing device 32, in the embodiment shown comprising hydraulically actuated pins, to fixate the BOP support floor 26 in the support position.
  • the BOP support floor is fixated relative to the guides of the BOP transport cart by securing the securing end of the support floor 26 and the securing end of the guides 23 relative to each other, i.e. by inserting a pin through openings provided in the securing end of the support floor and in the securing end of the guide.
  • the process of transporting a BOP from storage into the firing line is shown in figures 12 and 13.
  • the process of lowering a BOP along the firing line is shown in figures 14 and 15.
  • the process of transferring a BOP between the firing lines is depicted in figures 16-18.
  • the BOP transport cart depicted in figures 2 and 3 comprises a BOP support floor that can be pivoted between a BOP support position, depicted in figure 2, and a clearance position, depicted in figure 3.
  • the BOP transport cart depicted in figures 4-9 is a double function BOP transport cart, configured for supporting the BOP 17 in a transport position, depicted in figures 4 and 5, and in a transfer position, depicted in figures 6-9.
  • the BOP support floor When the BOP support floor is in the transport position, the BOP 17 is supported from below by the BOP support floor 26 such that the BOP is located mainly above the BOP transport track 20.
  • the BOP support floor is in the clearance position, the BOP 17 can be suspended at a top end thereof such that the BOP is located mainly below the BOP transport track 20.
  • the double function BOP transport cart 22 comprises a yoke 33 for, when in the transfer position, suspending the BOP 17 at or near a top end of the BOP (17).
  • the yoke 33 is pivotably supported between the guides 23 such that the yoke 33 can pivot about a yoke pivot axis 34 between a passive position, depicted in figures 2 and 3, and an active position, depicted in figures 4-9.
  • the yoke pivot axis 34 extends perpendicular to the BOP transport track 22. Furthermore, in the exemplary embodiment shown, the yoke pivot axis 34 coincides with the BOP support floor pivot axis 30.
  • the yoke 33 In the passive position, the yoke 33 has a substantially vertical orientation, and, in the preferred embodiment shown, extends adjacent the BOP 17 supported in the transport position on the BOP support floor 26.
  • the yoke 33 In the active position, the yoke 33 has a substantially horizontal orientation for suspending the BOP 17 at or near a top end thereof in the transfer position and/or for suspending a tubular 35 or connector coupled with a top end of the BOP 17.
  • the BOP is suspended from the yoke via a tubular that is connected to the top end of the BOP.
  • the yoke (33) and the BOP support floor 26 are fixed relative to each other, such that when the BOP support floor 26 is lowered from the support position into the clearance position, the yoke 33 is pivoted from the passive position into the active position.
  • the yoke 33 is provided with a yoke securing device 36, e.g. comprising a slide or pins, in the embodiment shown provided in the form of openings for cooperating with a sliding pin, to fixate the yoke 33 in the active position, e.g. by securing a securing end of the yoke 33 and the securing end of the guides 23 relative to each other.
  • the securing end of the yoke is shared with the securing end of an upstanding guide frame, provided on the BOP support floor.
  • the BOP support floor 26 is provided with an upstanding BOP guide frame 37.
  • the frame is mounted on the BOP support floor such, that the BOP guide frame 37 is located alongside the BOP 17 supported by the BOP support floor 26, when in the support position.
  • the BOP guide frame 37 is located between the BOP 17 and the guides 23 of the BOP transport cart 22 and the BOP transport track 20 when the BOP support floor 26 is in the clearance position, see figures 5 and 7.
  • the frame shields the beams and the track from impact by the BOP, and prevents damage to BOP and the BOP transport track.
  • the BOP guide frame 37 is provided with two securing ends 40, which two securing ends are located adjacent the securing ends 25 of the guides when the BOP support floor 26 is in the clearance position.
  • the support floor securing device 36 comprising sliding pins, can thus be used for securing the securing ends of the guide frame 37 and the securing ends of the guides 23 relative to each other to thus fixate the BOP support floor 26 in the clearance position.
  • fixating the BOP support floor relative to the guides also fixates the yoke relative to the guides, since the yoke and support floor are fixed to each other and thus from a single component.
  • the BOP support floor 26 is provided with a BOP test stump 38. When mounted in the BOP transport crat, the BOP rests on the test stump.
  • additional or alternative BOP supports can be provided.
  • Providing the BOP transport cart with a BOP test stump allows for the BOP 17 to be tested while in the transport cart, e.g. while supported in the storage location or optionally in the firing line.
  • the BOP transport cart is furthermore provided with a BOP test stump lifting device 39, comprising a hydraulic cylinder.
  • the lifting device is associated with the BOP test stump 38 to allow for vertical displacement of the BOP test stump 38 with the BOP 17 resting thereon.
  • the mobile working deck is pivotable in upward direction into a non-active position, see figure 23.
  • the deck in the non-active position of the mobile working deck, the deck is cleared from the first firing line, and a BOP can be transported into the firing line over the BOP track partially located below the mobile working deck (when in the active position.
  • the mobile working deck is provided with lifting means, so that in a raised non-active position of the mobile working deck the BOP can be brought from the BOB storage to underneath the mobile working deck into the first firing line.
  • the mobile working deck is movable in lateral direction, so that in a non-active position of the mobile working deck the deck is cleared from the first firing line.
  • the offshore drilling vessel has a stationary working deck at the second side of the tower. More in particular, the main deck extends from one side of the tower alongside and on the opposite side of the tower. Furthermore, when the mobile working deck is in the active position, the mobile working deck is at substantially the same height as the stationary working deck, i.e. the extension of the main deck on the opposite side of the tower. Thus, the deck surface of the mobile working deck is level, or at least substantially level, with the deck surface of the main deck.
  • an X-mas tree storage 41 is present adjacent the moonpool, on the main deck, and a X-mas tree transport device 43 is provided for displacement of the X-mas tree 42 into a firing line of the hoist system, preferably in the firing line and onto the mobile working deck.
  • the X-mas tree transport device 43 comprises a set of rails, and a X-mas tree support frame is displaceable over said rails.
  • the offshore drilling vessel comprises a riser handling gantry crane 44 provided with riser upending device that allows to raise and lower a riser.
  • the tower 7 is provided with a carrousel 45 for supporting tubular, e.g. drilling tubulars, and manipulators 46 for transferring the tubulars between the carousel and the firing lines.
  • tubular e.g. drilling tubulars
  • manipulators 46 for transferring the tubulars between the carousel and the firing lines.
  • the offshore drilling vessel is furthermore provided with a rotary drilling drive, e.g. a top drive, at the second side of the tower.
  • a rotary drilling drive e.g. a top drive
  • the vessel is, at the second side of the tower 7 provided with a riser tensioner system 47, which riser tensioner system is arranged below the main deck.
  • the riser tensioner system comprises a set of hydraulic tensioner cylinders for supporting a riser connected to a wellhead, or to a BOP mounted on a wellhead.
  • An offshore drilling vessel provided with a BOP transport cart can be used for mounting a BOP on a wellhead, such a process comprises in the steps:
  • the method can further comprise the steps:
  • the process of transporting a BOP from storage into the firing line is shown in figures 12 and 13.
  • the process of lowering a BOP along the firing line is shown in figures 14 and 15.
  • the process of transferring a BOP between the firing lines is depicted in figures 16-18.
  • the support floor defines a BOP transport axis.
  • the BOP transport axis coincides with a central axis of the BOP, more in particular a central axis of a main conduit running through the BOP. In the embodiment shown, this main axis of the BOP coincides with the central axis of the BOP test stump supporting the BOP.
  • the BOP transport axis is aligned with the firing line when the BOP is in the main launch position, i.e. is positioned in the firing line such that the BOP can be coupled with a tubular suspended in the firing line.
  • the BOP transport axis is aligned with the firing line when the BOP is in the launch position, i.e. is positioned in the firing line such that the BOP can be coupled with a tubular suspended in the firing line.
  • the Bop transfer axis coincides with the central axis of the BOP, more in particular the central axis of the main conduit running through the BOP.
  • the BOP transfer axis is aligned with the firing line when the BOP is in the secondary launch position, i.e. is positioned in the firing line such that the BOP can be coupled with a tubular suspended in the firing line.
  • the BOP support floor more in particular the BOP test stump provided on the BOP support floor, and the yoke are positioned such that the BOP transport axis and the BOP transfer axis do not coincide, compare for example figures 14 and 15. This is caused by the yoke being located closer to the pivot axis than the BOP test stump.
  • the BOP, and possibly the tubulars connected to the top end thereof can be supported closer to the pivot axis, which allows for supporting an increased weight. This is beneficial, because the one or more tubulars add weight to the already heavy BOP.
  • a drilling vessel as referred to herein, can be any kind of vessel, such as for example a drilling vessel, or a floating platform such as a production platform.
  • the offshore drilling vessel is a semi-submersible comprising a hull and a deck structure, referred to as a deck box, the deck structure supporting the tower and defining the moonpool.
  • the hull of the offshore drilling vessel has a bow and a stern, an accommodation topside having crew quarters and a bridge, said accommodation topside being arranged on the hull at the bow, a main deck between the accommodation topside and the stern of the vessel, and wherein a front main deck portion of the main deck extends forward of the moonpool and a rear main deck portion of the main deck extends rearward of the moonpool, wherein the base of the tower extends between sections of the hull on port and starboard side of the moonpool, the base being spaced from the bow side and from the stern side of the moonpool, thereby forming a front moonpool area forward of the tower and a rear moonpool area rearward of the tower.
  • the hull comprises an engine room below the accommodation topside, the engine room containing one or more fuel powered engines and generators driven by said one or more engines to provide on-board power, at least for one or more electric motors of electric thrusters providing propulsion for the vessel, and wherein one or more exhausts associated with the one or more engines extend upward to one or more exhaust outlets above the accommodation topside.
  • the drilling vessel floor structure according to the invention is furthermore suitable for supporting the tower, transferring the weight of the tower to the hull of the vessel.

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Mechanical Engineering (AREA)
  • Earth Drilling (AREA)

Abstract

L'invention concerne un navire de forage en mer (1), le navire de forage en mer comprenant une voie de transport de BOP (20) et un chariot de transport de BOP associé (22). La voie de transport de BOP s'étend entre un entrepôt de BOP et une rampe de largage, pour permettre le transport d'un BOP 17 entre l'entrepôt de BOP et la rampe de largage. Selon l'invention, le chariot de transport de BOP est pourvu d'un plancher de support de BOP (26), lequel plancher de support de BOP est supporté de manière pivotante de telle sorte que le plancher de support peut pivoter entre une position de support permettant de supporter le BOP et une position de dégagement permettant au BOP d'être abaissé à travers le chariot de transport de BOP. Dans un mode de réalisation, le chariot de transport de BOP est en outre conçu pour suspendre un BOP à partir de celui-ci.
PCT/NL2019/050012 2018-01-12 2019-01-10 Navire de forage WO2019139476A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL2020273 2018-01-12
NL2020273A NL2020273B1 (en) 2018-01-12 2018-01-12 Drilling vessel

Publications (1)

Publication Number Publication Date
WO2019139476A1 true WO2019139476A1 (fr) 2019-07-18

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NL (1) NL2020273B1 (fr)
WO (1) WO2019139476A1 (fr)

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4367796A (en) * 1980-11-21 1983-01-11 Global Marine, Inc. Blowout preventer and guideline handling
WO2002033213A2 (fr) * 2000-10-19 2002-04-25 Weatherford/Lamb, Inc. Chassis de transport et de service pour ensemble obturateur de puits
WO2004094774A1 (fr) * 2003-03-28 2004-11-04 Helmerich & Payne, Inc. Systeme de transport et d'installation d'obturateur de puits
US20090057011A1 (en) * 2007-04-02 2009-03-05 Inge Petersson Drilling device
US20130098627A1 (en) * 2011-10-05 2013-04-25 Seahourse Equipment Corp Method and Apparatus for Drilling Multiple Subsea Wells From an Offshore Platform at a Single Site
US20150068726A1 (en) * 2013-09-11 2015-03-12 Woolslayer Companies, Inc. Blowout preventer transport and handling system
US20150330556A1 (en) * 2013-02-11 2015-11-19 Nabors Drilling USA Blowout Preventer Transport Cart
US20150377409A1 (en) * 2014-06-27 2015-12-31 Woolslayer Companies, Inc. Blowout preventer storage, transport and lift skid assembly

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4367796A (en) * 1980-11-21 1983-01-11 Global Marine, Inc. Blowout preventer and guideline handling
WO2002033213A2 (fr) * 2000-10-19 2002-04-25 Weatherford/Lamb, Inc. Chassis de transport et de service pour ensemble obturateur de puits
WO2004094774A1 (fr) * 2003-03-28 2004-11-04 Helmerich & Payne, Inc. Systeme de transport et d'installation d'obturateur de puits
US20090057011A1 (en) * 2007-04-02 2009-03-05 Inge Petersson Drilling device
US20130098627A1 (en) * 2011-10-05 2013-04-25 Seahourse Equipment Corp Method and Apparatus for Drilling Multiple Subsea Wells From an Offshore Platform at a Single Site
US20150330556A1 (en) * 2013-02-11 2015-11-19 Nabors Drilling USA Blowout Preventer Transport Cart
US20150068726A1 (en) * 2013-09-11 2015-03-12 Woolslayer Companies, Inc. Blowout preventer transport and handling system
US20150377409A1 (en) * 2014-06-27 2015-12-31 Woolslayer Companies, Inc. Blowout preventer storage, transport and lift skid assembly

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