US3412981A - Marine platform support assembly - Google Patents

Marine platform support assembly Download PDF

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Publication number
US3412981A
US3412981A US582984A US58298466A US3412981A US 3412981 A US3412981 A US 3412981A US 582984 A US582984 A US 582984A US 58298466 A US58298466 A US 58298466A US 3412981 A US3412981 A US 3412981A
Authority
US
United States
Prior art keywords
jacking
jacking assembly
platform
tubular member
marine
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.)
Expired - Lifetime
Application number
US582984A
Other languages
English (en)
Inventor
George T Richardson
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.)
SONAT OFFSHORE DRILLING Inc
Original Assignee
Offshore Co
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 Offshore Co filed Critical Offshore Co
Priority to US582984A priority Critical patent/US3412981A/en
Priority to NO67169366A priority patent/NO125150B/no
Priority to SE11524/67A priority patent/SE319731B/xx
Priority to GR670134308A priority patent/GR34308B/el
Priority to FR118912A priority patent/FR1534624A/fr
Priority to DE1634510A priority patent/DE1634510C3/de
Priority to GB40332/67A priority patent/GB1147293A/en
Priority to ES344868A priority patent/ES344868A1/es
Priority to NL6712834A priority patent/NL6712834A/xx
Priority to JP42061769A priority patent/JPS4939473B1/ja
Priority to DK481667AA priority patent/DK139199B/da
Priority to BE704549D priority patent/BE704549A/xx
Application granted granted Critical
Publication of US3412981A publication Critical patent/US3412981A/en
Assigned to SONAT OFFSHORE DRILLING INC. reassignment SONAT OFFSHORE DRILLING INC. CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). Assignors: OFFSHORE COMPANY, THE
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F3/00—Devices, e.g. jacks, adapted for uninterrupted lifting of loads
    • B66F3/24—Devices, e.g. jacks, adapted for uninterrupted lifting of loads fluid-pressure operated
    • B66F3/25—Constructional features
    • B66F3/30—Constructional features with positive brakes or locks
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02B—HYDRAULIC ENGINEERING
    • E02B17/00—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor
    • E02B17/04—Equipment specially adapted for raising, lowering, or immobilising the working platform relative to the supporting construction
    • E02B17/08—Equipment specially adapted for raising, lowering, or immobilising the working platform relative to the supporting construction for raising or lowering
    • E02B17/0836—Equipment specially adapted for raising, lowering, or immobilising the working platform relative to the supporting construction for raising or lowering with climbing jacks

Definitions

  • This invention relates to a marine platform support assembly. More particularly, the invention relates to a marine platform support assembly having a rigid support leg comprised of a plurality of tubes to extend between the marine platform and a marine bottom. Still more particularly the invention relates to a horseshoe or crescent-like jacking assembly for such a multitube support leg of a marine platform.
  • Marine platforms such as dock or offshore oil well drilling barges which are buoyant and adapted to be towed or otherwise propelled to a marine site are frequently provided with openings through which a corresponding number of supporting legs are arranged to be extended
  • These supporting legs have been constructed of single tubes which have been raised and lowered relative to the platforms by jacking assemblies which completely enveloped the tubes.
  • jacking assemblies which completely enveloped the tubes.
  • such tubes have had a long unsupported length extending between the marine bottom and the platform.
  • the tubes have been subjected to high bending forces created by wave, wind or current action, particularly during storms, creating a condition which in some circumstances may be unsafe as well as unstable.
  • this invention provides a marine platform with a support assembly having a plurality of supporting legs constructed of a plurality of tubular members interconnected by bracing which are raised and lowered relative to the platform by jacking assemblies of horseshoe or crescent-like shape mounted on the platform.
  • Each supporting leg is sized to pass through a cut-out in the deck of the platform and is of sufficient rigidity to withstand the bending loads imposed by the wind, wave or current action when embedded in a marine bottom to support the marine platform.
  • the crescent-like jacking as- 3,412,981 Patented Nov.
  • ice semblies are each constructed of a pair of vertically spaced horseshoe or crescent-like yokes which are disposed longitudinally of a tubular member of the support leg and movable relative to each other by a vertical jack means.
  • Each yoke has a pair of hydraulic pin cylinder devices mounted at the ends which are adapted to cooperate with apertures in or apertured racks on a tubular member of a support leg.
  • the jacking assemblies are shaped so as to move transversely of a leg when being mounted or dismantled for maintenance without interfering with the bracing connecting the tubular members of a support leg.
  • each jacking assembly has a guide means removably secured thereon which maintains the jacking assembly on the associated tubular member and guides the jacking assembly during longitudinal movement relative to the associated tubular member.
  • the guide means is secured in place after a jacking assembly is brought into position on a tubular member.
  • the jacking assemblies are mounted on the support legs between a platform and a jackhouse and actuated in unison to move relative to the support leg.
  • Each jacking assembly is of such dimensions so as to resist skewing on a support leg tubular member. Since the jacking assemblies do not completely surround the tubular members, the jacking assemblies are of reduced weight. Consequently, each jacking assembly can be handled with greater ease and portability.
  • FIG. 1 illustrates a perspective schematic view of a marine platform with a support leg according to the invention
  • FIG. 2 illustrates a segmented schematic view of a support leg of the invention passing through the deck of a marine platform
  • FIG. 3 illustrates a partially broken front view of a jacking assembly of the invention on a tubular member of the support leg;
  • FIG. 4 illustrates a plan view of the jacking assembly of FIG. 3 on the tubular member of the support leg
  • FIG. 5 illustrates a view taken on line 55 of FIG. 4.
  • a marine platform 10 constructed in accordance with the invention includes a support assembly having a plurality of leg supports 11, for example, four passing through cut-outs 12 in the deck 13 of the marine platform 10 to support the platform 10* on a marine bottom.
  • Each support leg 11 is formed of three elongated tubular members 14 which are interconnected by lateral bracing 15 to form a single rigid leg.
  • the tubular members 14 are arranged in a triangular fashion with respect to each other in order to present a support leg which is able to resist the high bending forces imparted by wind and water, for example, during periods of storm or when the legs extend through great depths of water to support the platform 10.
  • the bracing 15 is secured to the tubular members 14 in any suitable manner such as by welding and may consist of pipes, rods, angles or other conventional bracing members.
  • the 'leg supports 11 are moved in a vertical direction relative to the platform by means of jacking assemblies 16 mounted on each of the tubular members 14 in order to raise or lower the leg supports 11 relative to a marine bottom or to raise or lower the platform 10 on the leg supports 11 when supported on the marine bottom.
  • the jacking assemblies are mounted in a floating condition on the tubular members between the deck 13 and a jackhouse 17 positioned above the deck 13.
  • Each jacking assembly 16 is independent of fixed connection with the deck 13 and jackhouse 17 (FIG. 2).
  • each tubular member 14 is of cylindrical cross section, although any suitable polygonal cross section can be utilized, and is provided with a pair of racks 18 extending longitudinally along the exterior of member 14.
  • Each rack 18 is provided with an aligned series of apertures 19 disposed along the length of the rack for cooperation with a jacking assembly 16.
  • the racks 18 can be omitted and the apertures can be formed in the tubular member 14.
  • other types of known rack devices can be used such as gear types.
  • the racks 18 are disposed on the tubular mem ber 14 outside the points of connection of the bracing interconnecting the tubular member 14 with the remaining tubular members of the leg support 11 so as to provide a suflicient clearance between the jacking assembly 16 and bracing 15. For example, where three tubular members are used in equilateral fashion, the racks are disposed 180 apart.
  • Each jacking assembly 16 is of crescent-like or horseshoe shape so as to be moved transversely of a tubular member 14 during mounting of the jacking assembly on the tubular member or removal therefrom. This shape permits separate jacking assemblies 16 to be mounted individually on each of the tubular members 14 of a leg support 11 instead of using a single massive jacking assembly to envelop the entire support leg circumferentially.
  • the jacking assembly 16 is mounted between the deck 13 and jackhouse 17 in floating relation for abutment with a resilient buffer means 20 secured to the upper surface of the deck 13 and the underside of the jack'house 17.
  • the jacking assembly 16 is in abutment with one of the buffer means 20.
  • the jacking assembly 16 includes a pair of vertically spaced crescent-like yokes 21 disposed longitudinally of the tubular member 14 opposite the bracing 15, a pair of hydraulic pin cylinder devices 22, similar to the hydraulic pin cylinder apparatus disclosed in copending US. patent application Ser. No. 562,400, filed July 1, 1966-, mounted at the ends of each yoke 21 for cooperation with the racks 18 and a vertical jack means 23- for moving the yokes 21 relative to each other.
  • the yokes 21 are constructed of metal plates 24, such as steel plates which are welded together, in tubular form with a substantially square cross section (FIG. 5) which is suitably stiffened by interior stiffener plates (not shown).
  • Each yoke is shaped with a substantially straight intermediate section and arcuate-like end sections to form a substantially crescent-like or horseshoe shape.
  • any suitable shape can be used for the yokes provided the pin cylinder devices are in cooperation with a pair of apertured racks and the yokes are able to resist skewing on the tubular member, for example, a block C, L or arcuate shape.
  • the term crescent-like is thus used to provide a generic definition for these various shapes.
  • the pin cylinder devices 22 are connected to the ends of the yokes 21 as by welding so as to be disposed opposite the racks 18 of the tubular member 14.
  • Each pin cylinder device 22 has a hydraulically operated reciprocally mounted pin 25 which, as described in the above mentioned patent application, is adapted to be reciprocated into and out of the apertures 19 of the racks 18 for moving the tubular member 14 relative to the deck 13.
  • each pin cylinder device 22 is provided with a limit switch mechanism 26 and an electrical circuit (not shown) which is integrated with similar structure of the other pin cylinder devices 22 of the jacking assemblies 16 so that all the jacking assemblies are operated in unison in a manner similar to the system described in patent application Ser. No. 562,401, filed July 1, 1966.
  • the vertical jack means 23 consists of a pair of telescoping jacks, as disclosed in the above mentioned patent application, each of which is secured to a vertically aligned pair of pin cylinder devices 22 to connect the yokes 21 together for relative movement to each other.
  • each jacking assembly 16 is provided with a guide means for maintaining and guiding the jacking assembly 16 on the tubular member 14.
  • the guide means includes a guide bracket 27 (FIG. 4) removably mounted, as by bolts 28, on each pin cylinder device 22 on a side opposite the yoke 21.
  • Each guide bracket 27 includes a bearing pad 29, such as a brass pad, on the face disposed opposite to and in slightly spaced relation to the side of a rack 18 to the other side of the yoke 21.
  • the guide brackets 27 are each mounted on the respective pin cylinder devices 22 after the jacking assembly has been brought into mounting position on the tubular member 14 with each pin 25 in a retracted position. Conversely, when the jacking assembly 16 is to be removed from the tubular member 14, the guide brackets 27 are eac removed.
  • each jacking assembly 16 is provided with bumpers 30 centrally of each yoke 21 for guiding the jacking assembly 16 along the tubular member 14.
  • the bumpers 30 are arranged in pairs on the upper and lower surfaces of each yoke 21 and disposed in the direction of the tubular member 14.
  • Each bumper 30 consists of a generally L shaped bracket 31 which is mounted by bolts 32 to a mounting plate 33 fastened to the yoke surface as by welding.
  • the face of the bracket 31 depends along the inside of the yoke 21 in opposition to the tubular member 14 and has a projecting bearing plate 34 secured thereon by bolts 35 in slightly spaced relation to the tubular member 14.
  • the bumpers 30 serve with the guide bracket 27 to guide the jacking assembly 16 on the tubular member 14 during use.
  • the bumpers may be omitted and the yokes shaped to conform substantially to the shape of the tubular member, with or without pads between the yokes and tubular member.
  • the invention thus provides a marine platform with a support assembly having a multi-rnernber support leg which is able to resist the high bending forces imparted to the support legs during towing of the platform as well as during adverse wind and water conditions when erected at a marine site.
  • the members of the support legs are each sized of smaller cross section than a single tube which has been used before for the same water depths and thus allow an easier handling of the support leg.
  • the jacking assembly of the support assembly is of a size and shape so as to be easily positioned and secured on the members of the support leg. It is seen from the foregoing how these and other objects of the invention referred to herein may be achieved by the invention.
  • each of said jacking assemblies being disposed on a respective one of said members, each of said jacking assemblies including a pair of spaced crescent-like yokes disposed longitudinally of said member, a jack means connecting each of said yokes in movable relation to each other, and a pair of pin cylinder devices mounted at respective ends of each of said yoke for removable engagement with said member.
  • each said member includes a pair of apertured racks thereon for removable engagement with said pin cylinder devices.
  • each said jacking assembly includes a removable guide means for maintaining said jacking assembly on said member and for guiding said jacking assembly on said member during relative movement thereto.
  • each said jacking assembly includes bumper means mounted on each of said yokes in opposition to said member for guiding said jacking assembly on said member.
  • each member is tubular.
  • a jacking assembly on each of said tubular members between said deck and jackhouse for movement relative to said tubular member, said jacking assembly comprising a pair of spaced crescent shaped yokes disposed longitudinally of said tubular member, a jack means conmeeting said yokes for relative movement to each other, a pair of hydraulic pin cylinder devices mounted at respective ends of each of said yokes for removable engagement with said racks on said tubular member, said devices being disposed substantially 180 to each other, and removable guide means on each of said devices at one side of a respective rack for maintaining said jacking assembly on said tubular member and for guiding said jacking assembly on said
  • each said jacking assembly further includes bumper means mounted on each said yoke for guiding said jacking assembly on a tubular member.
  • a jacking assembly for an elongated member including a pair of spaced crescent-like yokes, a jacking means connecting each of said yokes in movable relation to each other, and a pair of pin cylinder devices mounted at respective ends of each said yokes for removable engagement with the elongated member.
  • a jacking assembly as set forth in claim 11 further including a removable guide means for maintaining and guiding said jacking assembly on said elongated member.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Civil Engineering (AREA)
  • Earth Drilling (AREA)
  • Packaging Of Machine Parts And Wound Products (AREA)
  • Jib Cranes (AREA)
  • Actuator (AREA)
US582984A 1966-09-29 1966-09-29 Marine platform support assembly Expired - Lifetime US3412981A (en)

Priority Applications (12)

Application Number Priority Date Filing Date Title
US582984A US3412981A (en) 1966-09-29 1966-09-29 Marine platform support assembly
NO67169366A NO125150B (xx) 1966-09-29 1967-08-15
SE11524/67A SE319731B (xx) 1966-09-29 1967-08-16
GR670134308A GR34308B (el) 1966-09-29 1967-08-16 Συγκροτημα υποστηριξεως ναυτικης εξεδρας.
FR118912A FR1534624A (fr) 1966-09-29 1967-08-24 Dispositif de supportage de plate-forme marine
DE1634510A DE1634510C3 (de) 1966-09-29 1967-09-01 Antrieb für die vertikal geführte Verschiebung der Stützbeine einer Hubinsel
GB40332/67A GB1147293A (en) 1966-09-29 1967-09-04 Marine platform support assembly
ES344868A ES344868A1 (es) 1966-09-29 1967-09-08 Un sistema de soporte de una plataforma maritima.
NL6712834A NL6712834A (xx) 1966-09-29 1967-09-20
JP42061769A JPS4939473B1 (xx) 1966-09-29 1967-09-27
DK481667AA DK139199B (da) 1966-09-29 1967-09-28 Søgående platform med støtteben af indbyrdes forbundne rør.
BE704549D BE704549A (xx) 1966-09-29 1967-09-29

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US582984A US3412981A (en) 1966-09-29 1966-09-29 Marine platform support assembly

Publications (1)

Publication Number Publication Date
US3412981A true US3412981A (en) 1968-11-26

Family

ID=24331210

Family Applications (1)

Application Number Title Priority Date Filing Date
US582984A Expired - Lifetime US3412981A (en) 1966-09-29 1966-09-29 Marine platform support assembly

Country Status (11)

Country Link
US (1) US3412981A (xx)
JP (1) JPS4939473B1 (xx)
BE (1) BE704549A (xx)
DE (1) DE1634510C3 (xx)
DK (1) DK139199B (xx)
ES (1) ES344868A1 (xx)
GB (1) GB1147293A (xx)
GR (1) GR34308B (xx)
NL (1) NL6712834A (xx)
NO (1) NO125150B (xx)
SE (1) SE319731B (xx)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4015434A (en) * 1975-10-22 1977-04-05 Scandril Offshore, Inc. Leg and guide construction for use in jackup barges
EP0035023A1 (en) * 1979-08-06 1981-09-09 Offshore Co METHOD AND APPARATUS FOR THE WEIGHT BASE OF A RUBBER PLATFORM.
WO1997042393A1 (en) 1996-05-03 1997-11-13 Transocean Offshore Inc. Multi-activity offshore exploration and/or development drilling method and apparatus
US6273193B1 (en) 1997-12-16 2001-08-14 Transocean Sedco Forex, Inc. Dynamically positioned, concentric riser, drilling method and apparatus
US7802636B2 (en) 2007-02-23 2010-09-28 Atwood Oceanics, Inc. Simultaneous tubular handling system and method
US8215888B2 (en) 2009-10-16 2012-07-10 Friede Goldman United, Ltd. Cartridge tubular handling system

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL175208C (nl) * 1980-09-04 1984-10-01 Rsv Gusto Eng Bv Inrichting voor het dempen van horizontale stootbelastingen bij de steunpoten van een kunstmatig eiland tijdens het neerlaten respectievelijk optillen van de poten.
US4405115A (en) * 1981-02-20 1983-09-20 Varco International, Inc. Gripping jack system
JPS60213834A (ja) * 1984-04-09 1985-10-26 Matsushita Electric Ind Co Ltd 熱流センサ
JPS60230027A (ja) * 1984-04-27 1985-11-15 Matsushita Electric Ind Co Ltd 熱流センサ
NO843746L (no) * 1984-09-19 1986-03-20 Saga Petroleum Heksagonalt fagverks t¨rn og fremgangsm¨te ved fremstillin g av slikt.
JPH02189432A (ja) * 1989-01-18 1990-07-25 Sharp Corp 路面の熱収支量測定装置
CN103754793B (zh) * 2013-10-21 2016-04-13 华中科技大学 一种具有自动限位装置的升降机构

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2992812A (en) * 1958-05-01 1961-07-18 De Long Corp Jacking mechanism and controls
GB949420A (en) * 1961-05-17 1964-02-12 Byggforbattring Ab Improvements in jacks
US3171259A (en) * 1960-09-30 1965-03-02 Universal Drilling Company Inc Offshore drilling barge

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2992812A (en) * 1958-05-01 1961-07-18 De Long Corp Jacking mechanism and controls
US3171259A (en) * 1960-09-30 1965-03-02 Universal Drilling Company Inc Offshore drilling barge
GB949420A (en) * 1961-05-17 1964-02-12 Byggforbattring Ab Improvements in jacks

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4015434A (en) * 1975-10-22 1977-04-05 Scandril Offshore, Inc. Leg and guide construction for use in jackup barges
EP0035023A1 (en) * 1979-08-06 1981-09-09 Offshore Co METHOD AND APPARATUS FOR THE WEIGHT BASE OF A RUBBER PLATFORM.
EP0035023A4 (en) * 1979-08-06 1982-07-19 Offshore Co APPARATUS AND METHOD FOR A PLATFORM MOUNTED ON JACKS WITH BASE OF GRAVITY.
EP2332822A2 (en) 1996-05-03 2011-06-15 Transocean Offshore Deepwater Drilling Inc. Drillship or semi-submersible and multi-activity drilling assembly
WO1997042393A1 (en) 1996-05-03 1997-11-13 Transocean Offshore Inc. Multi-activity offshore exploration and/or development drilling method and apparatus
US6047781A (en) * 1996-05-03 2000-04-11 Transocean Offshore Inc. Multi-activity offshore exploration and/or development drilling method and apparatus
US6056071A (en) * 1996-05-03 2000-05-02 Transocean Offshore Inc. Multi-activity offshore exploration and/or development drilling method and apparatus
US6068069A (en) * 1996-05-03 2000-05-30 Transocean Offshore Inc. Multi-activity offshore exploration and/or development drilling method and apparatus
US6085851A (en) * 1996-05-03 2000-07-11 Transocean Offshore Inc. Multi-activity offshore exploration and/or development drill method and apparatus
US6273193B1 (en) 1997-12-16 2001-08-14 Transocean Sedco Forex, Inc. Dynamically positioned, concentric riser, drilling method and apparatus
US7802636B2 (en) 2007-02-23 2010-09-28 Atwood Oceanics, Inc. Simultaneous tubular handling system and method
US8186455B2 (en) 2007-02-23 2012-05-29 Atwood Oceanics, Inc. Simultaneous tubular handling system and method
US8584773B2 (en) 2007-02-23 2013-11-19 Atwood Oceanics, Inc. Simultaneous tubular handling system and method
US9410385B2 (en) 2007-02-23 2016-08-09 Friede Goldman United, Ltd. Simultaneous tubular handling system
US10612323B2 (en) 2007-02-23 2020-04-07 Friede & Goldman United B.V. Simultaneous tubular handling system
US8215888B2 (en) 2009-10-16 2012-07-10 Friede Goldman United, Ltd. Cartridge tubular handling system
US8696289B2 (en) 2009-10-16 2014-04-15 Friede Goldman United, Ltd. Cartridge tubular handling system
US9476265B2 (en) 2009-10-16 2016-10-25 Friede Goldman United, Ltd. Trolley apparatus

Also Published As

Publication number Publication date
JPS4939473B1 (xx) 1974-10-25
DE1634510C3 (de) 1974-06-20
ES344868A1 (es) 1969-02-01
SE319731B (xx) 1970-01-19
DK139199B (da) 1979-01-08
GR34308B (el) 1968-04-15
NL6712834A (xx) 1968-04-01
NO125150B (xx) 1972-07-24
DK139199C (xx) 1979-06-11
DE1634510B2 (de) 1973-11-22
GB1147293A (en) 1969-04-02
BE704549A (xx) 1968-02-01
DE1634510A1 (de) 1971-10-14

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Date Code Title Description
AS Assignment

Owner name: SONAT OFFSHORE DRILLING INC.

Free format text: CHANGE OF NAME;ASSIGNOR:OFFSHORE COMPANY, THE;REEL/FRAME:004048/0943

Effective date: 19820105