EP4127384A1 - Installing casing from a drilling vessel - Google Patents

Installing casing from a drilling vessel

Info

Publication number
EP4127384A1
EP4127384A1 EP21713946.8A EP21713946A EP4127384A1 EP 4127384 A1 EP4127384 A1 EP 4127384A1 EP 21713946 A EP21713946 A EP 21713946A EP 4127384 A1 EP4127384 A1 EP 4127384A1
Authority
EP
European Patent Office
Prior art keywords
slip device
string
casing
drilling
tubulars
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP21713946.8A
Other languages
German (de)
French (fr)
Inventor
Diederick Bernardus Wijning
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Huisman Equipment BV
Original Assignee
Itrec BV
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 BV filed Critical Itrec BV
Publication of EP4127384A1 publication Critical patent/EP4127384A1/en
Pending legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B19/00—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables
    • E21B19/10—Slips; Spiders ; Catching devices
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B19/00—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables
    • E21B19/16—Connecting or disconnecting pipe couplings or joints
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
    • E21B21/01—Arrangements for handling drilling fluids or cuttings outside the borehole, e.g. mud boxes

Definitions

  • the present invention relates to the installation of casing in a subsea wellbore from a drilling vessel.
  • drilling vessels are commonly provided with a drilling installation comprising a drilling tower, a top drive system, and a vertical motion drive adapted to cause vertical motion of the top drive system relative to the drilling tower, for example in order to perform drilling and tripping operations involving a tubulars string along a firing line of the drilling installation.
  • a diverter support housing that is configured to removable receive therein a diverter insert assembly.
  • a diverter support housing includes one or more outlets that may be coupled to one or more exhaust flow lines away from the drill floor for diverting any high-pressure fluid resulting from, for example, a blowout, away from the drill floor.
  • the diverter insert assembly may couple to an upper end of a casing or a riser and be positioned about the drill string as the wellbore is drilled.
  • a drilling vessel is shown in WO2014/193228, wherein the drilling vessel comprises a working or drilling deck, which deck has a deck top surface.
  • a tubulars support structure is recessed in this drilling deck.
  • the tubulars support system has a set of parallel horizontal rails on which two slip devices are mobile. Each slip device can be brought into an operative position in the firing line, above the diverter support housing, and a retracted position away from the firing line. The retracted positions are at opposite ends of the rails.
  • Each of these slip devices has a lateral access allowing to laterally displace the slip device relative to the tubulars string in the firing line for placing the tubular string in the slip device and for removing the tubular string from the slip device.
  • a diverter support housing is mounted to the deck, here mounted under the tubulars support system.
  • the tubulars support system allows to configure the slip devices so that they can handle different diameter tubulars, so that when the wellbore related process involves switching from one diameter tubulars to another diameter tubulars, the one slip device is retracted and the other slip device is brought into the operative position thereof.
  • installation of casing also referred to as running or landing of casing, is a common activity.
  • casing is pipe, mostly steel pipe, that lines the wall of the wellbore, e.g. to seal off troublesome formations.
  • the largest diameter casing is called the conductor pipe or conductor string and is installed close to the seabed surface. Then further casing types are installed, one within the other, such as surface casing, intermediate casing, and production casing.
  • a dedicated slip device for handing casing, that is to support a casing string when connecting a further casing joint to the casing string in the assembly of a casing string that is to be installed in a wellbore.
  • This dedicated slip device is often called casing slip device or casing spider.
  • the present invention aims to enhance the installation of casing in a subsea wellbore from a drilling vessel.
  • the invention proposes a drilling vessel provided with a drilling installation according to claim 1.
  • the vessel is provided with a first slip device, which may also be called a casing slip device, that is configured to be arranged in the diverter support housing to support the casing string when connecting a further casing joint to the casing string in the assembly of a casing string that is to be installed in a wellbore.
  • the invention thus proposes to use the diverter support housing in the context of the installation of casing by arranging the slip device handling the casing within the diverter support housing.
  • the load of the casing string suspended from the first slip device is absorbed by the diverter support housing.
  • the first or casing slip device has a main body that is landed on a shoulder of the diverter support housing when placing the first slip device from above into the diverter support housing.
  • the diverter support housing is, as is conventional in the art, mounted to the working deck, e.g. a drill floor, e.g. under the working deck.
  • the internal diameter of the diverter support housing is commonly sufficiently large to arrange the first or casing slip device herein.
  • the internal diameter is 75.5-inch, 60.5-inch, 49.5 inch, or 37.5 inch.
  • the internal diameter is at least 32 inches to allow for sufficient space for the casing slip device.
  • the arrangement of the first slip device within the diverter support housing allows for more efficient procedures and/or more effective arrangement of equipment on-board the vessel.
  • the vessel comprises a second slip device that is configured to be arranged in an operative position thereof in the firing line and above the diverter support housing to support a tubulars string when connecting a further tubular to the tubulars string in the assembly of the tubulars string.
  • the configuration is such that the second slip device can be positioned in the firing line, whilst the first slip device remains in place in the diverter support housing.
  • the second slip device can, for example, be used for handling smaller diameter casing types than the first slip device, and/or for handling a landing string used in landing of a casing string that has previously assembled using the first slip device, and/or for handling of production tubing during the completion of a subsea well, and/or for handling drill pipe of a drill string during drilling activities.
  • the second slip device is movable away from the operative position to a retracted position, e.g. by a corresponding actuator, e.g. the second slip device travelling over a horizontal rail assembly, e.g. the rail assembly fitted to the working deck.
  • the second slip device is mounted on a horizontal rail assembly comprising one or more rails so as to be displaceable between the operative position and a retracted position away from the firing line, wherein the second slip device is provided with a lateral access allowing to laterally displace the second slip device relative to the tubulars string in the firing line for placing the tubular string in the second slip device and for removing the tubular string from the second slip device.
  • a further third slip device is mounted on the horizontal rail assembly so as to be displaceable between the operative position and a retracted position away from the firing line, and the third slip device is provided with a lateral access allowing to laterally displace the third slip device relative to the tubulars string in the firing line for placing the tubular string in the third slip device and for removing the tubular string from the third slip device.
  • WO2014/193228 discloses a tubulars support system having two slip devices on a horizontal rail assembly above the diverter support housing, which system is suitable for use in the context of the present invention.
  • the second slip device - and when present the further third slip device - is/are movable into the respective operative position thereof whilst the first or casing slip device remains in place in the diverter support housing.
  • This allows for enhanced continuity in a casing installation process, e.g. as the switching from the use of the first slip device to another slip device does not need to involve the removal of the first slip device from the housing.
  • this is advantageous when the second slip device is used for the assembly and launching of a landing string from which a casing string that has been assembled using the first slip device is suspended for the purpose of landing the casing string.
  • a cross-over piece is connected to the top of the assembled casing string, and then a landing string joint is connected to the cross-over piece.
  • the second slip device is then used in the further assembly of the landing string and serves to retain the landing string as well as the casing string now held by the landing string, as the first slip device is then disengaged from the casing string.
  • the second slip device - and when present the third slip device - is/are mounted to the deck in a recess below a drill floor of the drilling installation, e.g. as shown in WO2014/193228, e.g. an elongated recess.
  • the recess may be covered by removable floor panels, e.g. allowing personnel to walk over the floor panels.
  • the horizontal rail assembly includes two parallel horizontal rails that are arranged on opposite sides of the diverter support housing, preferably in proximity of a top of the diverter support housing, e.g. located just above the top of the support housing.
  • the second slip device is configured, e.g. set, to handle tubulars having a second diameter and the third slip device is configured, e.g. set, to handle tubulars having a third diameter, different from the second diameter, e.g. as disclosed in WO2014/193228 and in WO2015/167330.
  • the first or casing slip device is configured to handle casing tubulars having a first diameter that is greater than said second diameter and greater than said third diameter, e.g. a first diameter that is greater than the maximum tubulars diameter that can be handled by any of the second and third slip device.
  • the second and third slip devices are generally of the same construction, with the configuration to handle a certain diameter, or certain range of diameters, of tubulars being adjustable.
  • each of these slip devices comprises one or more mobile or exchangeable parts, e.g. exchangeable clamping parts, often called dies in the field, to adapt or set the effective clamping diameter of the slip device.
  • the first slip device may comprise one or more mobile or exchangeable parts, e.g. exchangeable clamping parts, often called dies in the field, to adapt or set the effective clamping diameter of the first slip device.
  • mobile or exchangeable parts e.g. exchangeable clamping parts, often called dies in the field
  • the working deck is vertically mobile relative to the hull, e.g. in view of heave compensation of the deck relative to the hull of the vessel.
  • the present invention also relates to a method according to claim 7 for installation of casing in a wellbore from a drilling vessel.
  • the method comprises assembly of a casing string involving a first or casing slip device to support the launched casing string when connecting a further casing joint to the casing string.
  • the first slip device is arranged in the diverter support housing.
  • the casing string is a conductor casing string, or another type of casing string.
  • the vessel comprises a second slip device that is configured to be arranged in an operative position thereof in the firing line and above the diverter support housing. This second slip device is configured to support a tubulars string when connecting a further tubular to the tubulars string in the assembly of the tubulars string.
  • the second slip device is configured and operated to handle casing or production tubing of a different, smaller, diameter than the casing handled by the first slip device in another, earlier, stage of the installation process.
  • the second slip device is mounted on a horizontal rail assembly of the working deck, the assembly comprising one or more rails so as to be displaceable between the operative position and a retracted position away from the firing line, wherein the second slip device is provided with a lateral access allowing to laterally displace the second slip device relative to the tubulars string in the firing line for placing the tubular string in the second slip device and for removing the tubular string from the second slip device.
  • a third slip device is mounted on the horizontal rail assembly so as to be displaceable between the operative position and a retracted position away from the firing line, and wherein the third slip device is provided with a lateral access allowing to laterally displace the third slip device relative to the tubulars string in the firing line for placing the tubular string in the third slip device and for removing the tubular string from the third slip device.
  • each of the second and/or third slip device allows to move the slip device out of the operative position for retraction whilst a string remains in the firing line, e.g. the string being suspended from the top drive device.
  • a string remains in the firing line, e.g. the string being suspended from the top drive device.
  • the second slip device - and when present the third slip device - is moved into the respective operative position whilst the first slip device remains in place in the diverter support housing. This, for example, allows for enhanced continuity in a casing installation process.
  • the second slip device is configured and operated to handle tubulars having a second diameter and the third slip device is configured and operated to handle tubulars having a third diameter, different from the second diameter, wherein the first slip device is configured to handle casing tubulars having a first diameter that is greater than said second diameter and said third diameter.
  • the first slip device is configured to handle casing tubulars having a first diameter that is greater than said second diameter and said third diameter.
  • the method involves the assembly and landing of a conductor string.
  • a conductor string is a string that is installed to cover unconsolidated formations, to seal off shallow water sands and to provide protection against shallow gas flows.
  • the string is commonly cemented to the seabed.
  • the conductor string is assembled using the first of casing slip device to support the launched conductor string when connecting a further conductor string joint to the conductor string.
  • the first slip device is arranged in the diverter support housing. Once the desired length of the conductor string has been reached, a cross-over piece is secured to the top of the conductor string, which is still retained by the first slip device.
  • a landing string joint is connected to the cross-over piece, for example the landing string joint being embodied as drill pipe.
  • the second slip device is then used to retain the landing string and the conductor string suspended therefrom, allowing the release of the first slip device from the conductor string.
  • the conductor string is landed.
  • any type of casing string is assembled using the first slip device, which casing string is then landed involving the assembly and use of a landing string, e.g. of drill pipe joints, and the second slip device.
  • the present invention also relates to a casing slip device according to claim 12 for use on board of a drilling vessel provided with a drilling installation.
  • the installation comprises:
  • a vertical motion drive adapted to cause vertical motion of the top drive system relative to the drilling tower in order to perform drilling and tripping operations involving tubulars string along a firing line of the drilling installation
  • a working deck e.g. a drill floor
  • a diverter support housing that is mounted to the working deck and is configured to removable receive therein a diverter insert assembly, wherein the casing slip device is configured to support a launched casing string when connecting a further casing joint to a casing string.
  • the casing slip device is configured to be arranged in the diverter support housing.
  • the present invention also relates to the combination of a diverter support housing that is configured to removable receive therein a diverter insert assembly for use on-board of a drilling vessel provided with a drilling installation and of a casing slip device that is configured to be arranged in the diverter support housing for support a launched casing string when connecting a further casing joint to a casing string.
  • the combination may also include one or more diverter insert assemblies configured to be arranged in the diverter support housing, as is known in the art.
  • the present invention also relates to the assembly and landing of a casing string, e.g. a conductor string, as described herein.
  • FIG. 1 shows in cross-section a part of an exemplary drilling vessel according to the invention with the first slip device in the diverter support housing,
  • FIG. 2 shows the view of figure 1 with the first slip device arranged in the diverter support housing
  • FIG. 3 shows in perspective view the second and third slip devices of the vessel of figure 1, as well as the horizontal rail assembly and the diverter support housing,
  • FIG. 4 shows the view of figure 2 with the first slip device engaging and supporting a casing string
  • FIG. 5 shows the view of figure 2 with the first slip device in inoperative mode and the second slip device engaging and supporting another tubular string, e.g. a drill pipe string.
  • another tubular string e.g. a drill pipe string.
  • a drilling installation which comprises a drilling tower, a top drive system, and a vertical motion drive adapted to cause vertical motion of the top drive system relative to the drilling tower in order to perform drilling and tripping operations involving tubulars string along a firing line 10 of the drilling installation.
  • WO2014/193228 wherein a vessel with these standard components is shown.
  • the vessel has a moon pool 2 and the tower is arranged on the hull of the vessel over or adjacent the moon pool.
  • the figures 1, 2, 4, and 5 depict a working deck 1, possibly (as here) embodied as a drill floor, arranged in vertical projection above the moon pool 2.
  • the deck 1 is fixed to the hull of the vessel.
  • the deck 1 is vertically mobile relative to the hull, e.g. in view of heave compensation of the deck 1 relative to the hull of the vessel.
  • the latter embodiment is, for example, elucidated in WO2015/133895.
  • sheave 8 of a wireline riser tensioner system which is not discussed in more detail as it is a further standard component of a drilling vessel.
  • the deck 1 has a top surface 3, here accessible by personnel.
  • the deck 1 includes an elongated recessed space 4 below the top surface 3. Below this space 4, e.g. at the underside of the deck 1 , a diverter support housing 20 is mounted to the deck 1. This housing 20 is configured to removable receive therein a diverter insert assembly as is known in the art.
  • the housing 20 has a circumferential wall 21 with outlets 22, 23 to one or more flow lines 25.
  • the wall 21 surrounds a central bore of the housing 20, e.g. of an internal diameter of at least 32 inch, e.g. any one of 37.5, 49.5, 60.5, or 75.5 inch, which are standard sizes in the field.
  • the housing 20 is open at the top for placement of the diverter insert therein from above, e.g. the housing having a shoulder 26 on which the insert assembly is landed.
  • the housing 20 may be provided with one or more operable locking members to lock the insert assembly in place relative to the housing 20.
  • the housing 20 is a load bearing housing, e.g. in view of a functionality wherein a riser string is supported from the housing in an emergency hang-off situation.
  • FIGS. 2, 4, and 5 depict the arrangement, in the central bore of the housing 20, of a first slip device 30 that is configured to support a casing string 40, e.g. a conductor casing or surface casing, when connecting a further casing joint to the casing string in the assembly of a casing string that is to be installed in a wellbore.
  • a casing string 40 e.g. a conductor casing or surface casing
  • the slip device 30 is landed on the shoulder 26 of housing 20, so that a load of the casing string held by the slip device 30 is transferred to the housing 20 and thereby to the deck 1.
  • the slip device 30 comprises a main body 31, mobile clamping parts 32, e.g. wedge clamping parts cooperating with wedge guides 33 on the main body 31, and one or more actuators 34 that are operable to move the clamping parts 32 between a clamping position and a non-operative position.
  • the main body 31 is an annular one-piece main body.
  • the main body is a split main body, e.g. composed of two semi-circular main body parts, e.g. one body part being detachable from the rest of the main body to allow for placement of the slip device 30 in the housing 20 whilst a tubular string or another item extends along the firing line.
  • the slip device 30 is a split-type slip device allowing for placement and/or removal of the slip device 30 while a tubular string extends through the slip device 30 along the firing line 10.
  • the figures also illustrate the provision of a second slip device 50 and a third slip device 70, in an arrangement and in embodiment known from WO2014/193228.
  • these further second and/or third slip devices 50, 70 are mounted on the working deck 1 , here arranged in the space 4 below the top 3 of the deck 1 , as is preferred.
  • the slip devices 50, 70 are depicted with their mobile clamping parts in raised non-clamping position, and in two lower clamping positions indicative of the clamping range of each device.
  • the second and/or third slip devices 50, 70 are embodied as described in WO2015/167330.
  • the second slip device 50 is configured to be arranged in an operative position thereof in the firing line 10 and above the diverter support housing 20 to support a tubulars string 80 when connecting a further tubular to the tubulars string in the assembly of the tubulars string. This is illustrated in figure 5.
  • the second slip device 50 is mounted on a horizontal rail assembly 60 that is mounted to the working deck and comprises one or more rails 61, 62.
  • the device 50 is displaceable over the rails, by one or more actuators 64, 65, between the operative position and a retracted position away from the firing line 10.
  • the second slip device 50 is provided with a lateral access, here formed by hinged sections 51, 52 of the device 50, allowing to laterally displace the second slip device 50 relative to the tubulars string in the firing line for placing the tubular string in the second slip device and for removing the tubular string from the second slip device. This is explained, for example, in WO2014/193228.
  • the third slip device 70 is also is mounted on the horizontal rail assembly 60 so as to be displaceable between the operative position and a retracted position away from the firing line 10.
  • the third slip device 70 is provided with a lateral access., here formed by hinged sections 71, 72, allowing to laterally displace the third slip device relative to the tubulars string in the firing line for placing the tubular string in the third slip device and for removing the tubular string from the third slip device.
  • the horizontal rails assembly includes two parallel rails 61, 62 that are arranged on opposite sides of the diverter support housing 20, in proximity of a top of the diverter support housing.
  • the second slip device 50 is configured to handle tubulars 80 having a second diameter and the third slip device 70 to be configured to handle tubulars having a third diameter, different from the second diameter.
  • the first slip device 30 is configured to handle casing tubulars 40 having a first diameter that is greater than said second diameter and then said third diameter.
  • the second slip device 50 and the third slip device 70 can be moved over the rails 61, 62 into the respective operative position whilst the first slip device 30 remains in place in the diverter support housing 20. This, for example, allows for enhanced continuity in a casing installation process.
  • the diverter support housing 20 is configured to receive therein a diverter insert, as part of the normal use of a diverter in a wellbore related activity.
  • the figure 2 then illustrates the inventive concept of arranging a casing slip device 30 in the housing 20.
  • casing slip device 30 is in use and supports casing string 40, e.g. conductor or surface casing string 40.
  • the second and third slip devices 50, 70 are in their retracted position, remote from the firing line 10.
  • Figure 5 illustrates that the casing slip device 30 can remain in place in the housing 20, whilst a selected one of the second and third slip devices 50, 70 can be brought into the respective operative position for handling another, smaller diameter, tubulars string 80.
  • the second or third slip device is used for handing a landing string, e.g. composes of drill pipe joints, when landing a casing string.
  • the slip devices 50, 70 can also be used in other activities for handling a drill pipe string, or for handling a production casing string.

Abstract

A casing slip device for use on-board of a drilling vessel provided with a drilling installation comprising a drilling tower, a top drive system, a vertical motion drive adapted to cause vertical motion of the top drive system relative to the drilling tower in order to perform drilling and tripping operations involving tubulars string along a firing line of the drilling installation. The vessel has a diverter support housing configured to removable receive therein a diverter insert assembly. A casing slip device is configured to support a launched casing string when connecting a further casing joint to a casing string. The casing slip device is configured to be arranged in the diverter support housing.

Description

INSTALLING CASING FROM A DRILLING VESSEL
The present invention relates to the installation of casing in a subsea wellbore from a drilling vessel.
In the field, drilling vessels are commonly provided with a drilling installation comprising a drilling tower, a top drive system, and a vertical motion drive adapted to cause vertical motion of the top drive system relative to the drilling tower, for example in order to perform drilling and tripping operations involving a tubulars string along a firing line of the drilling installation. Another standard component of a drilling vessel is a diverter support housing that is configured to removable receive therein a diverter insert assembly. Commonly, a diverter support housing includes one or more outlets that may be coupled to one or more exhaust flow lines away from the drill floor for diverting any high-pressure fluid resulting from, for example, a blowout, away from the drill floor. The diverter insert assembly may couple to an upper end of a casing or a riser and be positioned about the drill string as the wellbore is drilled.
For example, a drilling vessel is shown in WO2014/193228, wherein the drilling vessel comprises a working or drilling deck, which deck has a deck top surface. A tubulars support structure is recessed in this drilling deck. The tubulars support system has a set of parallel horizontal rails on which two slip devices are mobile. Each slip device can be brought into an operative position in the firing line, above the diverter support housing, and a retracted position away from the firing line. The retracted positions are at opposite ends of the rails. Each of these slip devices has a lateral access allowing to laterally displace the slip device relative to the tubulars string in the firing line for placing the tubular string in the slip device and for removing the tubular string from the slip device. A diverter support housing is mounted to the deck, here mounted under the tubulars support system.
As explained in WO2014/193228, the tubulars support system, for example, allows to configure the slip devices so that they can handle different diameter tubulars, so that when the wellbore related process involves switching from one diameter tubulars to another diameter tubulars, the one slip device is retracted and the other slip device is brought into the operative position thereof. This saves time compared to more common drilling vessels where there is just one slip device that needs to be adapted from a setting handling the one diameter to a setting handling the other diameter, e.g. involving the need to exchange clamping parts of the slip device. In the field, installation of casing, also referred to as running or landing of casing, is a common activity. Commonly casing is pipe, mostly steel pipe, that lines the wall of the wellbore, e.g. to seal off troublesome formations. Commonly the largest diameter casing is called the conductor pipe or conductor string and is installed close to the seabed surface. Then further casing types are installed, one within the other, such as surface casing, intermediate casing, and production casing.
Often, due to the large diameter of casing, e.g. 20 inch diameter for conductor casing and/or 16 inch diameter for surface casing, a dedicated slip device is provided for handing casing, that is to support a casing string when connecting a further casing joint to the casing string in the assembly of a casing string that is to be installed in a wellbore. This dedicated slip device is often called casing slip device or casing spider.
The present invention aims to enhance the installation of casing in a subsea wellbore from a drilling vessel.
The invention proposes a drilling vessel provided with a drilling installation according to claim 1. Herein the vessel is provided with a first slip device, which may also be called a casing slip device, that is configured to be arranged in the diverter support housing to support the casing string when connecting a further casing joint to the casing string in the assembly of a casing string that is to be installed in a wellbore.
The invention thus proposes to use the diverter support housing in the context of the installation of casing by arranging the slip device handling the casing within the diverter support housing. Herein, preferably, the load of the casing string suspended from the first slip device is absorbed by the diverter support housing. For example, the first or casing slip device has a main body that is landed on a shoulder of the diverter support housing when placing the first slip device from above into the diverter support housing.
The diverter support housing is, as is conventional in the art, mounted to the working deck, e.g. a drill floor, e.g. under the working deck. The internal diameter of the diverter support housing is commonly sufficiently large to arrange the first or casing slip device herein. For example, the internal diameter is 75.5-inch, 60.5-inch, 49.5 inch, or 37.5 inch. For example, the internal diameter is at least 32 inches to allow for sufficient space for the casing slip device.
The arrangement of the first slip device within the diverter support housing allows for more efficient procedures and/or more effective arrangement of equipment on-board the vessel.
In an embodiment, the vessel comprises a second slip device that is configured to be arranged in an operative position thereof in the firing line and above the diverter support housing to support a tubulars string when connecting a further tubular to the tubulars string in the assembly of the tubulars string. Preferably, the configuration is such that the second slip device can be positioned in the firing line, whilst the first slip device remains in place in the diverter support housing. The second slip device can, for example, be used for handling smaller diameter casing types than the first slip device, and/or for handling a landing string used in landing of a casing string that has previously assembled using the first slip device, and/or for handling of production tubing during the completion of a subsea well, and/or for handling drill pipe of a drill string during drilling activities.
Preferably, the second slip device is movable away from the operative position to a retracted position, e.g. by a corresponding actuator, e.g. the second slip device travelling over a horizontal rail assembly, e.g. the rail assembly fitted to the working deck.
In an embodiment, e.g. as disclosed in WO2014/193228, the second slip device is mounted on a horizontal rail assembly comprising one or more rails so as to be displaceable between the operative position and a retracted position away from the firing line, wherein the second slip device is provided with a lateral access allowing to laterally displace the second slip device relative to the tubulars string in the firing line for placing the tubular string in the second slip device and for removing the tubular string from the second slip device.
In an embodiment, e.g. as disclosed in WO2014/193228, a further third slip device is mounted on the horizontal rail assembly so as to be displaceable between the operative position and a retracted position away from the firing line, and the third slip device is provided with a lateral access allowing to laterally displace the third slip device relative to the tubulars string in the firing line for placing the tubular string in the third slip device and for removing the tubular string from the third slip device. It will be appreciated that WO2014/193228 discloses a tubulars support system having two slip devices on a horizontal rail assembly above the diverter support housing, which system is suitable for use in the context of the present invention.
In an embodiment, as preferred, the second slip device - and when present the further third slip device - is/are movable into the respective operative position thereof whilst the first or casing slip device remains in place in the diverter support housing. This, for example, allows for enhanced continuity in a casing installation process, e.g. as the switching from the use of the first slip device to another slip device does not need to involve the removal of the first slip device from the housing. For example, this is advantageous when the second slip device is used for the assembly and launching of a landing string from which a casing string that has been assembled using the first slip device is suspended for the purpose of landing the casing string. For example, a cross-over piece is connected to the top of the assembled casing string, and then a landing string joint is connected to the cross-over piece. The second slip device is then used in the further assembly of the landing string and serves to retain the landing string as well as the casing string now held by the landing string, as the first slip device is then disengaged from the casing string.
In an embodiment, as preferred, the second slip device - and when present the third slip device - is/are mounted to the deck in a recess below a drill floor of the drilling installation, e.g. as shown in WO2014/193228, e.g. an elongated recess. The recess may be covered by removable floor panels, e.g. allowing personnel to walk over the floor panels.
In an embodiment, the horizontal rail assembly includes two parallel horizontal rails that are arranged on opposite sides of the diverter support housing, preferably in proximity of a top of the diverter support housing, e.g. located just above the top of the support housing.
In an embodiment, the second slip device is configured, e.g. set, to handle tubulars having a second diameter and the third slip device is configured, e.g. set, to handle tubulars having a third diameter, different from the second diameter, e.g. as disclosed in WO2014/193228 and in WO2015/167330. In an embodiment of the invention, the first or casing slip device is configured to handle casing tubulars having a first diameter that is greater than said second diameter and greater than said third diameter, e.g. a first diameter that is greater than the maximum tubulars diameter that can be handled by any of the second and third slip device.
In embodiments, the second and third slip devices are generally of the same construction, with the configuration to handle a certain diameter, or certain range of diameters, of tubulars being adjustable. For example, each of these slip devices comprises one or more mobile or exchangeable parts, e.g. exchangeable clamping parts, often called dies in the field, to adapt or set the effective clamping diameter of the slip device.
It is noted that the first slip device may comprise one or more mobile or exchangeable parts, e.g. exchangeable clamping parts, often called dies in the field, to adapt or set the effective clamping diameter of the first slip device.
In embodiments, the working deck is vertically mobile relative to the hull, e.g. in view of heave compensation of the deck relative to the hull of the vessel.
The present invention also relates to a method according to claim 7 for installation of casing in a wellbore from a drilling vessel. Herein the method comprises assembly of a casing string involving a first or casing slip device to support the launched casing string when connecting a further casing joint to the casing string. The first slip device is arranged in the diverter support housing. For example, the casing string is a conductor casing string, or another type of casing string. In an embodiment of the method, e.g. as disclosed in WO2014/193228, the vessel comprises a second slip device that is configured to be arranged in an operative position thereof in the firing line and above the diverter support housing. This second slip device is configured to support a tubulars string when connecting a further tubular to the tubulars string in the assembly of the tubulars string.
For example, the second slip device is configured and operated to handle casing or production tubing of a different, smaller, diameter than the casing handled by the first slip device in another, earlier, stage of the installation process.
In an embodiment, e.g. as disclosed in WO2014/193228, the second slip device is mounted on a horizontal rail assembly of the working deck, the assembly comprising one or more rails so as to be displaceable between the operative position and a retracted position away from the firing line, wherein the second slip device is provided with a lateral access allowing to laterally displace the second slip device relative to the tubulars string in the firing line for placing the tubular string in the second slip device and for removing the tubular string from the second slip device.
In an embodiment, e.g. as discussed in WO2014/193228, a third slip device is mounted on the horizontal rail assembly so as to be displaceable between the operative position and a retracted position away from the firing line, and wherein the third slip device is provided with a lateral access allowing to laterally displace the third slip device relative to the tubulars string in the firing line for placing the tubular string in the third slip device and for removing the tubular string from the third slip device.
The lateral access of each of the second and/or third slip device, for example, allows to move the slip device out of the operative position for retraction whilst a string remains in the firing line, e.g. the string being suspended from the top drive device. Once the one slip device is moved out of the operative position, in an embodiment, the other slip device can be moved into the operative position.
In an embodiment, as preferred, the second slip device - and when present the third slip device - is moved into the respective operative position whilst the first slip device remains in place in the diverter support housing. This, for example, allows for enhanced continuity in a casing installation process.
In a practical embodiment of the method, the second slip device is configured and operated to handle tubulars having a second diameter and the third slip device is configured and operated to handle tubulars having a third diameter, different from the second diameter, wherein the first slip device is configured to handle casing tubulars having a first diameter that is greater than said second diameter and said third diameter. This, for instance, allows for highly effective performance of a casing installation process, wherein the largest diameter or diameters casing is handled by the first slip device that is mounted in the diverter support housing, whilst the other two slip devices are employed to handle different diameter casing types or other drilling tubular, e.g. drill pipe, e.g. as part of a landing string used for landing the casing string.
In a practical embodiment, the method involves the assembly and landing of a conductor string. Generally, a conductor string is a string that is installed to cover unconsolidated formations, to seal off shallow water sands and to provide protection against shallow gas flows. The string is commonly cemented to the seabed. In the method, the conductor string is assembled using the first of casing slip device to support the launched conductor string when connecting a further conductor string joint to the conductor string. The first slip device is arranged in the diverter support housing. Once the desired length of the conductor string has been reached, a cross-over piece is secured to the top of the conductor string, which is still retained by the first slip device. Then a landing string joint is connected to the cross-over piece, for example the landing string joint being embodied as drill pipe. The second slip device is then used to retain the landing string and the conductor string suspended therefrom, allowing the release of the first slip device from the conductor string. Through a subsequent process of assembly of the landing string, the conductor string is landed.
It will be appreciated that the invention allows for embodiments, wherein any type of casing string is assembled using the first slip device, which casing string is then landed involving the assembly and use of a landing string, e.g. of drill pipe joints, and the second slip device.
The present invention also relates to a casing slip device according to claim 12 for use on board of a drilling vessel provided with a drilling installation. Herein the installation comprises:
- a drilling tower,
- a top drive system,
- a vertical motion drive adapted to cause vertical motion of the top drive system relative to the drilling tower in order to perform drilling and tripping operations involving tubulars string along a firing line of the drilling installation,
- a working deck, e.g. a drill floor,
- a diverter support housing that is mounted to the working deck and is configured to removable receive therein a diverter insert assembly, wherein the casing slip device is configured to support a launched casing string when connecting a further casing joint to a casing string. The casing slip device is configured to be arranged in the diverter support housing.
The present invention also relates to the combination of a diverter support housing that is configured to removable receive therein a diverter insert assembly for use on-board of a drilling vessel provided with a drilling installation and of a casing slip device that is configured to be arranged in the diverter support housing for support a launched casing string when connecting a further casing joint to a casing string. The combination may also include one or more diverter insert assemblies configured to be arranged in the diverter support housing, as is known in the art.
The present invention also relates to the assembly and landing of a casing string, e.g. a conductor string, as described herein.
The invention will now be discussed with reference to the drawings. In the drawings:
- Fig. 1 shows in cross-section a part of an exemplary drilling vessel according to the invention with the first slip device in the diverter support housing,
- Fig. 2 shows the view of figure 1 with the first slip device arranged in the diverter support housing,
- Fig. 3 shows in perspective view the second and third slip devices of the vessel of figure 1, as well as the horizontal rail assembly and the diverter support housing,
- Fig. 4 shows the view of figure 2 with the first slip device engaging and supporting a casing string,
- Fig. 5 shows the view of figure 2 with the first slip device in inoperative mode and the second slip device engaging and supporting another tubular string, e.g. a drill pipe string.
The invention will now be discussed with reference to the example shown in figures 1 - 5.
The figures depict a part of a drilling vessel that is provided with a drilling installation which comprises a drilling tower, a top drive system, and a vertical motion drive adapted to cause vertical motion of the top drive system relative to the drilling tower in order to perform drilling and tripping operations involving tubulars string along a firing line 10 of the drilling installation. For example, reference is made to WO2014/193228, wherein a vessel with these standard components is shown.
As is common in the field, the vessel has a moon pool 2 and the tower is arranged on the hull of the vessel over or adjacent the moon pool. The figures 1, 2, 4, and 5 depict a working deck 1, possibly (as here) embodied as a drill floor, arranged in vertical projection above the moon pool 2.
For example, the deck 1 is fixed to the hull of the vessel. In another embodiment, the deck 1 is vertically mobile relative to the hull, e.g. in view of heave compensation of the deck 1 relative to the hull of the vessel. The latter embodiment is, for example, elucidated in WO2015/133895.
Also illustrated are sheave 8 of a wireline riser tensioner system, which is not discussed in more detail as it is a further standard component of a drilling vessel.
The deck 1 has a top surface 3, here accessible by personnel.
The deck 1 includes an elongated recessed space 4 below the top surface 3. Below this space 4, e.g. at the underside of the deck 1 , a diverter support housing 20 is mounted to the deck 1. This housing 20 is configured to removable receive therein a diverter insert assembly as is known in the art.
Generally, the housing 20 has a circumferential wall 21 with outlets 22, 23 to one or more flow lines 25. The wall 21 surrounds a central bore of the housing 20, e.g. of an internal diameter of at least 32 inch, e.g. any one of 37.5, 49.5, 60.5, or 75.5 inch, which are standard sizes in the field.
The housing 20 is open at the top for placement of the diverter insert therein from above, e.g. the housing having a shoulder 26 on which the insert assembly is landed.
The housing 20 may be provided with one or more operable locking members to lock the insert assembly in place relative to the housing 20.
The housing 20 is a load bearing housing, e.g. in view of a functionality wherein a riser string is supported from the housing in an emergency hang-off situation.
In figures 1 and 3 the housing 20 is depicted empty, so without any equipment arranged therein.
The figures 2, 4, and 5 depict the arrangement, in the central bore of the housing 20, of a first slip device 30 that is configured to support a casing string 40, e.g. a conductor casing or surface casing, when connecting a further casing joint to the casing string in the assembly of a casing string that is to be installed in a wellbore.
The slip device 30 is landed on the shoulder 26 of housing 20, so that a load of the casing string held by the slip device 30 is transferred to the housing 20 and thereby to the deck 1. For example, the slip device 30 comprises a main body 31, mobile clamping parts 32, e.g. wedge clamping parts cooperating with wedge guides 33 on the main body 31, and one or more actuators 34 that are operable to move the clamping parts 32 between a clamping position and a non-operative position.
In an embodiment, the main body 31 is an annular one-piece main body. In another embodiment, the main body is a split main body, e.g. composed of two semi-circular main body parts, e.g. one body part being detachable from the rest of the main body to allow for placement of the slip device 30 in the housing 20 whilst a tubular string or another item extends along the firing line.
For example, the slip device 30 is a split-type slip device allowing for placement and/or removal of the slip device 30 while a tubular string extends through the slip device 30 along the firing line 10.
The figures also illustrate the provision of a second slip device 50 and a third slip device 70, in an arrangement and in embodiment known from WO2014/193228.
It is illustrated that these further second and/or third slip devices 50, 70 are mounted on the working deck 1 , here arranged in the space 4 below the top 3 of the deck 1 , as is preferred.
The slip devices 50, 70 are depicted with their mobile clamping parts in raised non-clamping position, and in two lower clamping positions indicative of the clamping range of each device.
As preferred, the second and/or third slip devices 50, 70 are embodied as described in WO2015/167330.
The second slip device 50 is configured to be arranged in an operative position thereof in the firing line 10 and above the diverter support housing 20 to support a tubulars string 80 when connecting a further tubular to the tubulars string in the assembly of the tubulars string. This is illustrated in figure 5.
In more detail, the second slip device 50 is mounted on a horizontal rail assembly 60 that is mounted to the working deck and comprises one or more rails 61, 62. The device 50 is displaceable over the rails, by one or more actuators 64, 65, between the operative position and a retracted position away from the firing line 10.
The second slip device 50 is provided with a lateral access, here formed by hinged sections 51, 52 of the device 50, allowing to laterally displace the second slip device 50 relative to the tubulars string in the firing line for placing the tubular string in the second slip device and for removing the tubular string from the second slip device. This is explained, for example, in WO2014/193228. The third slip device 70 is also is mounted on the horizontal rail assembly 60 so as to be displaceable between the operative position and a retracted position away from the firing line 10. Like the second slip device 50, the third slip device 70 is provided with a lateral access., here formed by hinged sections 71, 72, allowing to laterally displace the third slip device relative to the tubulars string in the firing line for placing the tubular string in the third slip device and for removing the tubular string from the third slip device.
It is illustrated that the horizontal rails assembly includes two parallel rails 61, 62 that are arranged on opposite sides of the diverter support housing 20, in proximity of a top of the diverter support housing.
As explained herein, it is possible for the second slip device 50 to be configured to handle tubulars 80 having a second diameter and the third slip device 70 to be configured to handle tubulars having a third diameter, different from the second diameter. Herein the first slip device 30 is configured to handle casing tubulars 40 having a first diameter that is greater than said second diameter and then said third diameter.
It is illustrated, that, as preferred, the second slip device 50 and the third slip device 70 can be moved over the rails 61, 62 into the respective operative position whilst the first slip device 30 remains in place in the diverter support housing 20. This, for example, allows for enhanced continuity in a casing installation process.
As shown in figure 1 the diverter support housing 20 is configured to receive therein a diverter insert, as part of the normal use of a diverter in a wellbore related activity. The figure 2 then illustrates the inventive concept of arranging a casing slip device 30 in the housing 20.
In figure 4 the casing slip device 30 is in use and supports casing string 40, e.g. conductor or surface casing string 40. The second and third slip devices 50, 70 are in their retracted position, remote from the firing line 10.
Figure 5 illustrates that the casing slip device 30 can remain in place in the housing 20, whilst a selected one of the second and third slip devices 50, 70 can be brought into the respective operative position for handling another, smaller diameter, tubulars string 80. For example, as explained herein, the second or third slip device is used for handing a landing string, e.g. composes of drill pipe joints, when landing a casing string. The slip devices 50, 70 can also be used in other activities for handling a drill pipe string, or for handling a production casing string.

Claims

C L A I M S
1. A drilling vessel provided with a drilling installation comprising:
- a drilling tower,
- a top drive system,
- a vertical motion drive adapted to cause vertical motion of the top drive system relative to the drilling tower in order to perform drilling and tripping operations involving a tubulars string along a firing line (10) of the drilling installation,
- a working deck (1), e.g. a drill floor,
- a diverter support housing (20) mounted to the working deck (1) and configured to removable receive therein a diverter insert assembly,
- a first slip device (30) configured to support a casing string (40) when connecting a further casing joint to the casing string in the assembly of a casing string that is to be installed in a wellbore, characterized in that the first slip device (30) is configured to be arranged or is arranged in the diverter support housing (20) to support the casing string (40) when connecting a further casing joint to the casing string in the assembly of a casing string that is to be installed in a wellbore.
2. Drilling vessel according to claim 1, wherein the vessel comprises a second slip device (50) that is configured to be arranged in an operative position thereof in the firing line and above the diverter support housing to support a tubulars string (80) when connecting a further tubular to the tubulars string in the assembly of the tubulars string.
3. Drilling vessel according to claim 2, wherein the second slip device (50) is mounted on a horizontal rail assembly (60) comprising one or more rails (61,62) so as to be displaceable between the operative position and a retracted position away from the firing line (10), and wherein the second slip device (50) is provided with a lateral access (51,52) allowing to laterally displace the second slip device relative to the tubulars string in the firing line for placing the tubular string in the second slip device and for removing the tubular string from the second slip device.
4. Drilling vessel according to claim 3, wherein a third slip device (70) is mounted on the horizontal rail assembly (60) so as to be displaceable between the operative position and a retracted position away from the firing line (10), and wherein the third slip device (70) is provided with a lateral access (71,72) allowing to laterally displace the third slip device relative to the tubulars string in the firing line for placing the tubular string in the third slip device and for removing the tubular string from the third slip device.
5. Drilling vessel according to claim 3 or 4, wherein the horizontal rails assembly includes two parallel rails (61,62) that are arranged on opposite side of the diverter support housing (20), preferably in proximity of a top of the diverter support housing.
6. Drilling vessel according to claim 4 or 5, wherein the second slip device (50) is configured to handle tubulars having a second diameter and the third slip device (70) is configured to handle tubulars having a third diameter, different from the second diameter, wherein the first slip device is configured to handle casing tubulars having a first diameter that is greater than said second diameter and then said third diameter.
7. Method for installation of casing (40) in a wellbore from a drilling vessel, wherein use is made of the drilling vessel, and the drilling vessel is provided with a drilling installation comprising:
- a drilling tower,
- a top drive system,
- a vertical motion drive adapted to cause vertical motion of the top drive system relative to the drilling tower in order to perform drilling and tripping operations involving a tubulars string along a firing line (10) of the drilling installation,
- a working deck (1), e.g. a drill floor,
- a diverter support housing (20) mounted to the working deck (1) and configured to removable receive therein a diverter insert assembly, and
- a first slip device (30), wherein the method comprises:
- assembly of a casing string, comprising connecting a further casing joint to the casing string,
- supporting the launched casing string by means of the first slip device (30) when connecting the further casing joint to the casing string, characterized in that the first slip device (30) is arranged in the diverter support housing (20).
8. Method according to claim 7, wherein the vessel comprises a second slip device (50) that is configured to be arranged in an operative position thereof in the firing line (10) and above the diverter support housing (20), which second slip device is configured to support a tubulars string (80) when connecting a further tubular to the tubulars string in the assembly of the tubulars string, for example casing of a different diameter than casing handled by the first slip device (30).
9. Method according to claim 8, wherein the second slip device (50) is mounted on a horizontal rail assembly (60) comprising one or more rails (61,62) so as to be displaceable between the operative position and a retracted position away from the firing line (10), and wherein the second slip device (50) is provided with a lateral access (51,52) allowing to laterally displace the second slip device relative to the tubulars string in the firing line for placing the tubular string in the second slip device and for removing the tubular string from the second slip device.
10. Method according to claim 9, wherein a third slip device (70) is mounted on the horizontal rail assembly (60) so as to be displaceable between the operative position and a retracted position away from the firing line (10), and wherein the third slip device is provided with a lateral access allowing to laterally displace the third slip device (70) relative to the tubulars string in the firing line for placing the tubular string in the third slip device and for removing the tubular string from the third slip device.
11. Method according to claim 10, wherein the second slip device (50) is configured and operated to handle tubulars having a second diameter and the third slip device (70) is configured and operated to handle tubulars having a third diameter, different from the second diameter, wherein the first slip device (30) is configured to handle casing tubulars (40) having a first diameter that is greater than said second diameter and said third diameter.
12. A casing slip device (30) for use on-board of a drilling vessel provided with a drilling installation comprising:
- a drilling tower,
- a top drive system,
- a vertical motion drive adapted to cause vertical motion of the top drive system relative to the drilling tower in order to perform drilling and tripping operations involving a tubulars string along a firing line of the drilling installation,
- a working deck (1), e.g. a drill floor, - a diverter support housing (20) that is mounted to the working deck (1) and is configured to removable receive therein a diverter insert assembly, wherein the casing slip device (30) is configured to support a launched casing string when connecting a further casing joint to a casing string, characterized in that the casing slip device (30) is configured to be arranged in the diverter support housing (20).
13. In combination a diverter support housing (20) that is configured to removable receive therein a diverter insert assembly for use on-board of a drilling vessel provided with a drilling installation and a casing slip device (30) that is configured to be arranged in the diverter support housing for support a launched casing string (40) when connecting a further casing joint to a casing string.
EP21713946.8A 2020-03-30 2021-03-23 Installing casing from a drilling vessel Pending EP4127384A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL2025237 2020-03-30
PCT/EP2021/057389 WO2021197915A1 (en) 2020-03-30 2021-03-23 Installing casing from a drilling vessel

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EP4127384A1 true EP4127384A1 (en) 2023-02-08

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Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6591916B1 (en) * 1998-10-14 2003-07-15 Coupler Developments Limited Drilling method
GB0026598D0 (en) * 2000-10-31 2000-12-13 Coupler Developments Ltd Improved drilling methods and apparatus
NO333021B1 (en) * 2010-01-26 2013-02-18 West Drilling Products As Device and method for drilling with continuous tool rotation and continuous drilling fluid supply
CN105247161B (en) 2013-05-27 2017-09-29 伊特里克公司 Drilling ship
WO2015133895A1 (en) 2014-03-03 2015-09-11 Itrec B.V. An offshore drilling vessel and method
US10352113B2 (en) 2014-04-29 2019-07-16 Itrec B.V. Tubular product clamp
EP3472422B1 (en) * 2016-06-15 2020-05-06 Itrec B.V. Wellbore drilling with a rotatable head clamp component

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