US20120006247A1 - Skid beam assembly for loading and transporting large structures - Google Patents

Skid beam assembly for loading and transporting large structures Download PDF

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Publication number
US20120006247A1
US20120006247A1 US13/201,871 US201013201871A US2012006247A1 US 20120006247 A1 US20120006247 A1 US 20120006247A1 US 201013201871 A US201013201871 A US 201013201871A US 2012006247 A1 US2012006247 A1 US 2012006247A1
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United States
Prior art keywords
skid beam
support structures
lateral
support
beam assembly
Prior art date
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Abandoned
Application number
US13/201,871
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English (en)
Inventor
Edward Stephen Piter
William Michael Pritchett
Roy Keith Smith
Wilbert Ray Ulbricht
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.)
Shell USA Inc
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Individual
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Filing date
Publication date
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Priority to US13/201,871 priority Critical patent/US20120006247A1/en
Assigned to SHELL OIL COMPANY reassignment SHELL OIL COMPANY ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: PRITCHETT, WILLIAM MICHAEL, ULBRICHT, WILBERT RAY, PITER, EDWARD STEPHEN, SMITH, ROY KEITH
Publication of US20120006247A1 publication Critical patent/US20120006247A1/en
Abandoned legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B35/00—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
    • B63B35/40—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for for transporting marine vessels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B35/00—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
    • B63B35/44—Floating buildings, stores, drilling platforms, or workshops, e.g. carrying water-oil separating devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63C—LAUNCHING, HAULING-OUT, OR DRY-DOCKING OF VESSELS; LIFE-SAVING IN WATER; EQUIPMENT FOR DWELLING OR WORKING UNDER WATER; MEANS FOR SALVAGING OR SEARCHING FOR UNDERWATER OBJECTS
    • B63C3/00—Launching or hauling-out by landborne slipways; Slipways
    • B63C3/08—Tracks on slipways

Definitions

  • the invention is directed to systems and methods for loading and transporting large structures over bodies of water.
  • U.S. Pat. No. 4,864,957 discloses an apparatus for recovery and launch of secondary watercraft such as SALM bases, barges and the like onto and from the deck of a host ship, comprising a pair of elongated inclined skid beam assemblies extending transversely across the host ship defining a pair of parallel skid paths spaced apart longitudinally of the ship, each skid beam assembly comprising a stationary skid beam section and a hinged skid beam section.
  • the stationary skid beam section has a substantially rectilinear skid surface spanning a major portion of the width of the ship's deck and extending in an inclined plane relative to the deck defining a wedge-like skid formation converging toward a side of the vessel for slidably supporting the secondary watercraft during launch and recovery thereof.
  • a hinge block supports the hinged beam at an end of its associated stationary skid beam section adjacent a lateral margin of the deck for swivel movement about a pivot axis lying in a vertical transverse plane and extending perpendicular to the inclined plane of the skid surfaces of the stationary and hinged beam sections.
  • U.S. Pat. No. 5,290,128 discloses a skidbase and a drilling structure are adapted for transfer between a jack-up platform and a fixed platform.
  • the jack-up platform is moved into position adjacent the fixed platform and raised to a height aligned with the fixed platform.
  • the skidbase is then transferred onto the fixed platform to provide a base on which the drilling structure is next placed.
  • the jack-up platform is raised to a vertical height aligned with the skidbase.
  • a connection means automatically engages and aligns the jack-up platform with the skidbase so that skid rails located on the deck of the jack-up platform and on a top surface of the skidbase are positioned a precise distance apart and at the same vertical height.
  • the drilling structure is then skidded onto the skidbase so that drilling operations may be performed from the fixed platform.
  • the connection means takes the form of a multi-dimension blade member affixed to the skidbase. The blade member progressively engages a series of guide members on the jack-up platform and, thereby, progressively and stagewise aligns the skidbase as the jack-up platform is moved to its desired vertical height.
  • U.S. Pat. No. 5,290,128 is herein incorporated by reference in its entirety.
  • U.S. Pat. No. 5,388,930 discloses a method and apparatus for transporting and using a drilling apparatus or a construction crane apparatus from a single moveable vessel. Either a drilling apparatus or a construction crane apparatus is skidded onto the deck of a jack-up rig which is then floated to a remote location for use of the apparatus. The skidding of the construction crane apparatus is facilitated by a new and unique pony structure to raise the base of the construction crane apparatus above a skid on the jack-up rig.
  • U.S. Pat. No. 5,388,930 is herein incorporated by reference in its entirety.
  • U.S. Pat. No. 7,350,475 discloses a method and apparatus for launching and recovering an object by a host vessel while the host vessel is in motion.
  • the recovery system utilizes a tethered capture system for connecting with the object and then directing the object to the host vessel where it is secured.
  • the tethered capture system includes one or more side planers that direct a capture cable away from the host vessel.
  • the capture cable is preferably disposed below the waterline through the use of a diving rig or extended cable struts so that the cable does not foul the propeller of the object to be recovered.
  • the side planer itself may include a ramped surface for loading the object prior to securing to the host vessel.
  • the object may be secured by way of a boom attached to the host vessel or by a lifting cradle that selectively extends aft of the host vessel.
  • a boom attached to the host vessel or by a lifting cradle that selectively extends aft of the host vessel.
  • a lifting cradle that selectively extends aft of the host vessel.
  • One aspect of the invention provides a system comprising a floating vessel comprising a deck having a longitudinal axis and a lateral axis; a plurality of support structures in an array spaced along the longitudinal axis and the lateral axis; a plurality of lateral support members spanning a lateral distance between adjacent support structures; a plurality of longitudinal support members spanning a longitudinal distance between adjacent support structures; and a skid beam resting on the plurality of lateral support members and the plurality of longitudinal support members.
  • FIG. 1 shows a perspective view of a transport vessel with a skid beam assembly in accordance with embodiments of the present disclosure.
  • FIG. 2 shows a detail view of the skid beam assembly shown in FIG. 1 in accordance with embodiments of the present disclosure.
  • FIG. 3 shows a top view of the skid beam assembly shown in FIG. 2 in accordance with embodiments of the present disclosure.
  • FIG. 4 shows a top view of support structures shown in FIG. 2 in accordance with embodiments of the present disclosure.
  • FIGS. 5-7 show cross-sectional views of the skid beam assembly and support structures shown in FIG. 2 in accordance with embodiments of the present disclosure.
  • embodiments disclosed herein relate generally to apparatuses and methods for loading and transporting large structures over bodies of water. Specifically, embodiments disclosed herein relate to a structure that may be disposed on a transport vessel, such as a barge, that enables larger structures to be transported on the transport vessel.
  • a transport vessel such as a barge
  • a large structure such as an oil platform or an oil rig, may be used to house machinery and/or workers used within the oil and gas industry to drill and/or extract oil and gas (i.e., hydrocarbons) through wells formed in the ocean bed.
  • This platform or oil rig depending on the environment and circumstances at the location of the hydrocarbons, may be attached to the ocean floor, may be formed as an artificial island, or may be floating at a desired location.
  • Offshore structures may be located on the continental shelf, though improvements in technology have enabled drilling and production of hydrocarbons in deeper waters and environments to be both feasible and profitable.
  • a typical offshore structure may then include around thirty wellheads located about the platform, in which directional drilling enables reservoirs to be accessed at both different depths and positions up to 10 kilometers away from the structure.
  • Offshore structures may be of various types, including fixed platforms, semi-submersibles, jack-ups, floating production systems (“FPSO's”), tension leg platforms, SPAR platforms, and others known to those skilled in the art.
  • FPSO's floating production systems
  • topsides of the platform may generally refer to the surface hardware installed above the water. This may include an oil production plant, workers' housing quarters, a drilling rig and other drilling equipment, and any other equipment known to those skilled in the art. Topsides may be modular in design, in which the topsides may be rearranged to enable expensive platforms to be readily updated with newer or different technology. Typical topsides may range in size, such as from about 6,000 short tons to about 10,000 short tons (5440 metric tons to 9070 metric tons), depending on the size and needs of the project. As such, large transport vessels, typically barges, may be used to transport the topsides from a construction yard on land to the desired offshore site. These topsides may then be transported in a single unit, or the topsides may be divided into portions for transport.
  • FIGS. 1 & 2
  • FIGS. 1 and 2 multiple side views of a transport vessel 100 having a skid beam assembly 110 disposed thereon in accordance with embodiments of the present disclosure is shown.
  • FIG. 1 shows a perspective side view of the transport vessel 100 with the skid beam assembly 110
  • FIG. 2 shows a detail side view of a portion of the skid beam assembly 110 .
  • the transport vessel 100 may include, for example, a barge or ship, on which the skid beam assembly 110 may then be placed and/or assembled to the deck of the transport vessel 100 .
  • one or more support structures 140 may be placed on the deck of the transport vessel 100 .
  • the skid beam assembly 110 may then be placed on top of the support structures 140 .
  • each of the support structures 140 may be individually adjusted, such as shimming the support structures 140 .
  • the support structures 140 may be adjusted to form a substantially flat and/or level surface to dispose the skid beam assembly 110 thereon. Otherwise, any non-level surfaces of the transport vessel 100 may affect the orientation of the skid beam assembly 110 .
  • the skid beam assembly 110 is tapered, for example, longitudinally (from bow 102 to stern 104 ) along the length of the assembly 110 .
  • the taper of the skid beam assembly 110 may be such that the height of the skid beam assembly 110 at the stern 104 of the transport vessel 100 is higher than the height of the skid beam assembly 110 at the bow 102 of the transport vessel 100 .
  • the transport vessel 100 may have a lowered vertical center-of-gravity.
  • the skid beam assembly 110 may still be high enough at the stern 104 for loading and unloading the transport vessel 100 , but may then also be lower in height at other portions of the transport vessel 100 to lower the vertical center-of-gravity of the skid beam assembly 110 and the transport vessel 100 .
  • the transport vessel 100 may be more stable at transport and, therefore, sustain larger loads.
  • the taper of the skid beam assembly 110 may range from about 0.5 degrees to about 1.5 degrees, depending on the size of the topside to be disposed upon the skid beam assembly. Specifically, the upper surface of the skid beam assembly 110 may be disposed at an angle between about 0.5 degrees and 1.5 degrees with respect to the lower surface of the skid beam assembly 110 . More particularly, the upper surface of the skid beam assembly 110 may be disposed at an angle of about 0.6 degrees to about 1 degrees with respect to the lower surface of the skid beam assembly 110 . However, those having ordinary skill in the art will appreciate that the present disclosure is not so limited, and in other embodiments, the taper of the skid beam assembly may be disposed at an angle outside of the above described range. For example, in other embodiments, the taper of the skid beam assembly may be disposed at an angle between about 0.1 degrees and about 3.0 degrees.
  • the skid beam assembly 110 may be formed as one large structure, or may instead be formed in multiple portions assembled together. As shown, particularly in FIG. 2 , the skid beam assembly 110 may be formed as multiple portions 110 A, 110 B, in which each of the portions 110 A, 110 B may then be disposed on top of the support structures 140 . If preferred, though not required, the skid beam assembly 110 may then be fixed to the support structures 140 , for example, by welding or using mechanical fasteners, and/or the skid beam assembly portions 110 A, 110 B may be fixed to each other.
  • FIGS. 3 & 4
  • FIGS. 3 and 4 multiple top perspective views of the skid beam assembly portion 110 A and the support structures 140 in accordance with embodiments of the present disclosure are shown. Specifically, FIG. 3 shows a top perspective view of the skid beam assembly portion 110 A, and FIG. 4 shows a top perspective view of the support structures 140 that support the skid beam assembly portion 110 A.
  • the skid beam assembly portion 110 A includes multiple beams 112 that run longitudinally when placed upon the transport vessel. These beams 112 of the skid beam assembly 110 A may be intersected and supported by other support members 114 that run laterally (side-to-side across the transport vessel) when placed upon the transport vessel.
  • the support members 114 are rigidly attached to the beams 112 , such as by welding, adhering, or mechanically fastening the support members 114 to the beams 112 , such that the support members 114 may then distribute weight and forces evenly across the skid beam assembly portion 110 A.
  • support structures 140 may be placed upon the deck of the transport vessel to support the skid beam assembly 110 and portions thereof.
  • the support structures 140 may all be formed and/or configured substantially the same, if desired. However, as shown in FIG. 4 , the shape and size of the support structures 140 may vary, such as depending on the location of the support structure 140 with respect to the skid beam assembly 110 .
  • Each of the support structures 140 includes a frame 142 , in which base members 144 are attached to the frame 142 .
  • the frames 142 may be formed in varying shapes and sizes, for example, a trapezoidal shape, a triangular shape, and a pyramidal shape. Example designs are described more below with reference to FIGS. 5-7 .
  • the base members 144 are attached to a bottom of each of the frames 142 , in which the base members 144 provide support for the support members 140 in the longitudinal direction, and the frames 142 provide support for the support members 140 in the lateral direction.
  • each support structure 140 may include one or more frames 142 and/or one or more base members 144 .
  • support structures 140 may vary. Because support structures 140 A, 140 F have larger frames 142 , these support structures 140 A, 140 F may be placed underneath ends A, F of the skid beam assembly portion 110 A to provide the most support to the skid beam assembly portion 110 A. Support structures 140 C, 140 D, which have additional base members 144 attached thereto, may then be placed underneath central locations C, D of the skid beam assembly portion 110 A to provide support to the skid beam assembly portion 110 A in the longitudinal direction. Support structures 140 B, 140 E may be placed underneath locations B, E of the skid beam assembly portion 110 A to provide any additional support necessary for the skid beam assembly.
  • support structures 140 B, 140 E may be placed underneath locations B, E of the skid beam assembly portion 110 A to provide any additional support necessary for the skid beam assembly.
  • FIGS. 5-7
  • FIGS. 5-7 multiple cross-sectional views of the skid beam assembly portion 110 A with the support assemblies 140 in accordance with embodiments of the present disclosure are shown.
  • FIG. 5 shows a cross-sectional view of the skid beam assembly portion 110 A with support assembly 140 taken across the cross-section A-A in FIG. 2
  • FIG. 6 shows a cross-sectional view of the skid beam assembly portion 110 A with support assembly 140 taken across the cross-section B-B in FIG. 2
  • FIG. 7 shows a cross-sectional view of the skid beam assembly portion 110 A taken across the cross-section C-C in FIG. 2 .
  • the skid beam assembly portion 110 A includes multiple beams 112 that run longitudinally in length and support members 114 that intersect the beams 112 for support. As such, these support members 114 may intersect the tops of the beams 112 , as shown, or at other locations upon the support members 114 , when providing support. Further, the support members 114 may include a raised edge 116 formed at one or more of the ends thereof. This raised edge 116 may provide support to prevent any movement of the topside when loaded on top of the skid beam assembly.
  • the support structures 140 each include a frame 142 and base members 144 attached thereto. Specifically, in FIG. 5 , the support structure 140 includes two base members 144 attached thereto, and in FIG. 6 , the support structure 140 includes three base members 144 attached thereto. As such, the support structures 140 may have one or more base members 144 attached thereto to help brace the support structures 140 .
  • the frame 142 is shown having a trapezoidal shape to support the skid beam assembly 110 A. However, as discussed above, those having ordinary skill in the art will appreciate that the present disclosure is not so limited, and other shapes, such as a rectangular shape or a triangular shape, may be used without departing from the scope of the present disclosure.
  • the skid beam assembly and the support structures may be fabricated in a shipyard and custom manufactured to transport particular topsides offshore.
  • the skid beam assembly and the support structures may be constructed of metal mainly, such as steel, with fabrication techniques, such as welding or bolting, which are known in the art.
  • the skid beam assembly and the support structures may also be coated with corrosion resistant coatings to withstand the offshore environment and/or to protect the integrity of the welds.
  • the skid beam assembly 140 may be used with a skid shoe 170 when loading and transporting large structures, such as topsides.
  • the skid shoe 170 may be attached to the top side, in which the skid shoe 170 would facilitate the loadout of the topside upon the transport vessel 100 .
  • An example of a skid shoe 170 is discussed in greater detail in co-pending application 61/153,332 (Attorney Docket No. TH3495), and is incorporated herein in its entirety.
  • embodiments of the present disclosure may provide for a transport vessel that is capable of transporting topsides that may otherwise have been too large for the capacity of the transport vessel. Due to the lowered vertical center-of-gravity and the increased buoyancy, the transport vessel may be able to sustain more weight while maintaining stability. Additionally, embodiments disclosed herein may allow some transport vessels to transport larger loads, thereby not requiring the need for other larger vessels.
  • a system comprising a floating vessel comprising a deck having a longitudinal axis and a lateral axis; a plurality of support structures in an array spaced along the longitudinal axis and the lateral axis; a plurality of lateral support members spanning a lateral distance between adjacent support structures; a plurality of longitudinal support members spanning a longitudinal distance between adjacent support structures; and a skid beam resting on the plurality of lateral support members and the plurality of longitudinal support members.
  • the skid beam is inclined at an angle from 0.1 to 3 degrees relative to the floating vessel deck along the longitudinal axis.
  • the skid beam is inclined at an angle from 0.5 to 1.5 degrees relative to the floating vessel deck along the longitudinal axis. In some embodiments, the skid beam further comprises a raised edge along at least one of its sides. In some embodiments, the system also includes a connection between a lateral support member and a longitudinal support member, the connection selected from the group consisting of bolts and welds. In some embodiments, the support structures comprise from 2 to 3 base members. In some embodiments, the support structures comprise a trapezoidal frame shape. In some embodiments, the system also includes a skid shoe resting on the skid beam. In some embodiments, the system also includes an offshore structure resting on the skid beam, the offshore structure comprising a topsides structure.
  • the array comprises from 3 to 10 support structures spaced along the longitudinal axis. In some embodiments, the array comprises from 4 to 8 support structures spaced along the longitudinal axis. In some embodiments, the array comprises from 2 to 6 support structures spaced along the lateral axis. In some embodiments, the array comprises from 3 to 5 support structures spaced along the lateral axis. In some embodiments, the skid beam comprises a plurality of sections connected to each other at a lateral beam. In some embodiments, the skid beam comprises a plurality of sections connected to each other at a longitudinal beam.
US13/201,871 2009-02-18 2010-02-16 Skid beam assembly for loading and transporting large structures Abandoned US20120006247A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US13/201,871 US20120006247A1 (en) 2009-02-18 2010-02-16 Skid beam assembly for loading and transporting large structures

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US15333109P 2009-02-18 2009-02-18
PCT/US2010/024278 WO2010096376A2 (fr) 2009-02-18 2010-02-16 Ensemble poutre de patin pour charger et transporter de grosses structures
US13/201,871 US20120006247A1 (en) 2009-02-18 2010-02-16 Skid beam assembly for loading and transporting large structures

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US20120006247A1 true US20120006247A1 (en) 2012-01-12

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US13/201,871 Abandoned US20120006247A1 (en) 2009-02-18 2010-02-16 Skid beam assembly for loading and transporting large structures

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US (1) US20120006247A1 (fr)
CN (1) CN102325691B (fr)
AU (1) AU2010216206B2 (fr)
BR (1) BRPI1013343A2 (fr)
GB (1) GB2479331B (fr)
MY (1) MY158643A (fr)
NO (1) NO339275B1 (fr)
WO (1) WO2010096376A2 (fr)

Cited By (4)

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Publication number Priority date Publication date Assignee Title
US20170068423A1 (en) * 2015-09-08 2017-03-09 Apple Inc. Intelligent automated assistant in a media environment
US20180004474A1 (en) * 2015-01-23 2018-01-04 Zhejiang Geely Holding Group Co., Ltd Mobile terminal, combined terminal device and method for splicing control
US20180323017A1 (en) * 2012-06-29 2018-11-08 Lg Innotek Co., Ltd. Touch window having improved electrode pattern structure
US10684696B2 (en) 2014-03-26 2020-06-16 Intel Corporation Mechanism to enhance user experience of mobile devices through complex inputs from external displays

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Publication number Priority date Publication date Assignee Title
CN102530201B (zh) * 2010-12-13 2015-05-20 舟山中远船务工程有限公司 船台下水钢结构滑道

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US4345536A (en) * 1979-10-30 1982-08-24 Gregg F Browne Vessel raising heavy structures

Cited By (4)

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Publication number Priority date Publication date Assignee Title
US20180323017A1 (en) * 2012-06-29 2018-11-08 Lg Innotek Co., Ltd. Touch window having improved electrode pattern structure
US10684696B2 (en) 2014-03-26 2020-06-16 Intel Corporation Mechanism to enhance user experience of mobile devices through complex inputs from external displays
US20180004474A1 (en) * 2015-01-23 2018-01-04 Zhejiang Geely Holding Group Co., Ltd Mobile terminal, combined terminal device and method for splicing control
US20170068423A1 (en) * 2015-09-08 2017-03-09 Apple Inc. Intelligent automated assistant in a media environment

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CN102325691B (zh) 2015-01-28
NO339275B1 (no) 2016-11-21
NO20111267A1 (no) 2011-09-19
GB201113712D0 (en) 2011-09-21
WO2010096376A3 (fr) 2010-12-09
AU2010216206A1 (en) 2011-09-08
WO2010096376A2 (fr) 2010-08-26
GB2479331A (en) 2011-10-05
BRPI1013343A2 (pt) 2019-04-16
GB2479331B (en) 2012-09-26
MY158643A (en) 2016-10-31
CN102325691A (zh) 2012-01-18
AU2010216206B2 (en) 2013-06-27

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