Patents Assigned to OFFSHORE TECHNOLOGY DEVELOPMENT
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Patent number: 10011467Abstract: A self-elevating platform comprises a deck structure, a plurality of legs, a plurality of footings, and a jacking system, wherein the plurality of legs pass through the deck structure and are supported by the plurality of footings; and wherein the jacking system comprises a jackcase structure with a first locking pin, a jacking yoke with a second locking pin, a plurality of jacking cylinders with a first end and second end, where the first end of the jacking cylinders is supported by the jackcase structure, and the second end of the jacking cylinders by the jacking yoke; and a fixation system comprising a plurality of tension rods, wherein each tension rod has a first end and a second end, and wherein the first end of the tension rods is securely coupled with the jacking yoke, and the second end of the tension rods is securely coupled with the deck structure; thereby when the plurality of tension rods secures the jacking yoke to the deck structure, the load can be removed from the hydraulic cylinders and tranType: GrantFiled: August 31, 2015Date of Patent: July 3, 2018Assignees: KEPPEL OFFSHORE & MARINE TECHNOLOGY CENTRE PTE LTD, OFFSHORE TECHNOLOGY DEVELOPMENT PTE LTDInventors: Michael John Perry, Chin Kau Quah, Kok Seng Foo
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Patent number: 9376780Abstract: A jackup deployed riser protection structure comprises a plurality of coupler receivers disposed onto a jackup hull, a tubular sleeve, wherein the tubular sleeve is a hollow structure that allows a riser to pass through, a support structure coupled with the tubular sleeve to provide support for the tubular sleeve, and a plurality of couplers coupled with the support structure, wherein each of the plurality of couplers is coupled with one of the plurality of coupler receivers, so that the jackup deployed riser protection structure is supported by the jackup hull in order to provide protection to the riser.Type: GrantFiled: October 30, 2014Date of Patent: June 28, 2016Assignees: Offshore Technology Development Pte Ltd, Keppel Offshore & Marine Technology Centre Pte LtdInventors: Michael John Perry, James Benton Davis, Kok Seng Foo, Cynthia Wang
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Patent number: 9371625Abstract: A modified spudcan with optimal peripheral skirt for enhanced performance of jackup operations comprises a spudcan top part, a spudcan bottom part, wherein the spudcan bottom has a central tip protruding from the central part of the spudcan bottom; wherein the top and bottom parts are coupled at their peripherals or through a spudcan side wall to form a hull structure, and a peripheral skirt having an upper end being coupled to the spudcan bottom part and a lower end extending downwardly, wherein the tip of the lower end of the peripheral skirt is higher than the distal end of the central tip.Type: GrantFiled: June 9, 2014Date of Patent: June 21, 2016Assignee: Offshore Technology Development Pte LtdInventors: Kok Seng Foo, Chin Kau Quah, Okky Ahmad Purwana, Michael John Perry
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Patent number: 9260920Abstract: The present subject matter provides a multipurpose cantilever skidding frame having a first frame structure, a second frame structure and two connection beams integrally forming a rigid structure to provide longitudinal and lateral movement for an exemplary cantilever. The present subject matter also provides a drilling rig that enables a cantilever to be moved in both longitudinal and transverse directions.Type: GrantFiled: March 15, 2013Date of Patent: February 16, 2016Assignees: Offshore Technology Development, Keppel Offshore & Marine Technology CentreInventors: Foo Kok Seng, Matthew Quah Chin Kau, Michael John Perry, Shan Xiao Yu
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Patent number: 8926224Abstract: The present subject matter provides a multi-direction direct cantilever skidding system suitable for an offshore drilling system, where the multi-direction direct cantilever skidding system comprises movable guides accommodating a cantilever of a Jackup drilling unit or other mobile platform and enabling transverse skidding rails to provide direct support for the cantilever so the cantilever may be moved longitudinally and transversely.Type: GrantFiled: March 15, 2013Date of Patent: January 6, 2015Assignees: Offshore Technology Development, Keppel Offshore & Marine Technology CenterInventors: Foo Kok Seng, Matthew Quah Chin Kau, Michael John Perry, Xiao Yu Shan
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Patent number: 8851797Abstract: The present subject matter provides a three-rail multi-direction direct cantilever skidding system suitable for an offshore drilling system, where the three-rail multi-direction direct cantilever skidding system comprises movable guides accommodating the cantilever of a Jackup drilling unit and enabling transverse skidding rails to provide direct support for the cantilever so the cantilever may be moved in both longitudinal and transverse directions.Type: GrantFiled: March 15, 2013Date of Patent: October 7, 2014Assignees: Offshore Technology Development, Keppel Offshore & Marine Technology CenterInventors: Kok Seng Foo, Matthew Quah Chin Kau, Michael John Perry, Xiao Yu Shan
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Patent number: 8640340Abstract: Installation vessels and methods for offshore wind turbine installation are disclosed. In one embodiment, a cantilever mast is used to transfer of wind turbine components from an installation vessel to an offshore installation site and guide the transfer to prevent undesired swinging movements of the wind turbine components. In another embodiment, a main crane is used in cooperation with a guide arm to transfer and guide wind turbine components from an installation vessel to an offshore installation site.Type: GrantFiled: April 13, 2010Date of Patent: February 4, 2014Assignees: Keppel Offshore & Marine Technology Centre Pte Ltd, Offshore Technology Development Pte Ltd, Keppel Fels LtdInventors: Kok Seng Foo, Hock Chye Michael Chia, Asbjørn Mortensen, Cheng Choong Chan, Teng Kiat Lim, Toh Tung Wong, Tom Aksel Waitz Østvold, Rune Henriksen
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Patent number: 8439606Abstract: The present invention provides an improved cantilever (10) for skidding on a platform (30) of a drilling rig. The cantilever (10) has two longitudinal members (12) while an edge (32) of the platform (30) has two transverse members (14,14a). The longitudinal and transverse members are connected at each interposition by a sliding and swivel assembly (20, 20a, . . . 20d). Each sliding/swivel assembly (20, 20a . . . 20d) is connected by an actuator (24, 24a) to the longitudinal or transverse member so that the cantilever (10) is operable to be displaced on the platform (30) by translation, rotation or a combination of translation and rotation.Type: GrantFiled: September 10, 2007Date of Patent: May 14, 2013Assignees: Offshore Technology Development, Offshore Innovative Solutions LLCInventors: Kok Seng Foo, Hoe Phong Tham, Jacob Alford, William T. Bennett, Jr.
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Patent number: 8047151Abstract: A system and method for configuring and supporting mooring lines deployed on offshore structures, e.g. Spar-type platform, are provided with recessed portions that are located around the splash/ice zones for “cutting” through waves. An offshore structure may be provided with a chain tensioning mechanism that applies a desired tension to a hull chain and mooring line during mooring. Upon mooring the offshore structure, a chain lock mechanism maintains the tension in the hull chain and mooring line, while the chain tensioning mechanism releases a portion of the hull chain which is to be stored in a chain housing which is fully submerged underwater. This way, the recessed portions of the offshore structure around the splash/ice zones would be substantially free of the hull chains. Additionally, a disconnect mechanism may be provided to allow quick and safe disconnection of the offshore structure from the mooring position.Type: GrantFiled: July 29, 2009Date of Patent: November 1, 2011Assignees: Keppel Offshore & Marine Technology Centre Pte Ltd, Offshore Technology Development Pte LtdInventors: Kok Seng Foo, Asbjorn Mortensen, Rune Henriksen, Chai Wah Koh, Toh Tung Wong
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Patent number: 8011857Abstract: The present invention describes an extraction system (100,100a) for expediting removal of a footing (105) that is embedded in a seabed or marine floor. The extraction system provides a supply of pressurized fluid (140) to a chamber from where the pressurized fluid exudes through porous members (122,122a, etc) located on the base (114) of the footing (105). When an uplifting force is applied to the footing (105) for its removal, the pressurized fluid (140) exudes out through the porous member (122,122a, etc.) to compensate or reduce suction induced beneath the footing, without fluidizing or channeling of the seabed soil, thereby expediting removal of the footing (105).Type: GrantFiled: May 26, 2009Date of Patent: September 6, 2011Assignees: Offshore Technology Development Pte Ltd, National University of SingaporeInventors: Kok Seng Foo, Chin Kau Quah, Okky Ahmad Purwana, Yean Khow Chow, Chun Fai Leung
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Patent number: 7850398Abstract: A jackup rig having a built-in capability of driving and extracting piles without need for dedicated pile drivers or extractors. The jackup rig provides an ice breaking functional capability, supplied by a jacking system, for operating in icy waters.Type: GrantFiled: June 18, 2007Date of Patent: December 14, 2010Assignee: Offshore Technology Development Pte LtdInventors: Kok Seng Foo, Margarita Ivanova Georgieva, Chin Kau Quah
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Publication number: 20100260555Abstract: The present invention provides an improved cantilever (10) for skidding on a platform (30) of a drilling rig. The cantilever (10) has two longitudinal members (12) whilst an edge (32) of the platform (30) has two transverse members (14,14a). The longitudinal and transverse members are connected at each interposition by a sliding and swivel assembly (20, 20a, . . . 20d). Each sliding/swivel assembly (20, 20a . . . 20d) is connected by an actuator (24, 24a) to the longitudinal or transverse member so that the cantilever (10) is operable to be displaced on the platform (30) by translation, rotation or a combination of translation and rotation.Type: ApplicationFiled: September 10, 2007Publication date: October 14, 2010Applicants: OFFSHORE TECHNOLOGY DEVELOPMENT, OFFSHORE INNOVATIVE SOLUTIONS LLCInventors: Kok Seng Foo, Hoe Phong Tham, Jacob Alford, William T. Bennett, JR.
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Patent number: 7726910Abstract: A leg guide for use in a leg of a jack up unit adapted to provide sliding guidance of the leg during vertical movement of the leg. The leg guide has a first portion contacting an edge of a leg chord and a second portion contacting a face of the leg chord along a longitudinal plane opposite the contact plane of the first portion. The edge contacting guide has a deflecting guide unit, which uses a compressible member sandwiched between two rigid plates. As the leg moves, the teeth of the leg chord contact the edge guide unit, with the compressible member absorbing compressible loads acting on the leg chord. The second portion provides for a face plate mounted transversely to the edge contacting guide for reducing the build-up of horizontal moment acting on the leg chord during the vertical movement of the leg and for reducing bending moments acting on the leg.Type: GrantFiled: March 11, 2008Date of Patent: June 1, 2010Assignee: Offshore Technology Development Pte Ltd.Inventors: Kok Seng Foo, Chin Kau Matthew Quah, Cheng Choong Chan
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Publication number: 20100096068Abstract: A method of protecting and repairing surfaces of structures using hand-laid epoxy and glass-aramid fabric composite is taught. Unlike the use of such composites as structural members, the present invention makes use of such composites in novel and inventive applications. Also unlike other methods, the invention is carefully hand-laid to conform closely to any irregular surfaces on the structure to be protected or repaired. The product of the method of the present invention is tougher than conventional paints and coatings and lasts significantly longer than conventional paints and coatings.Type: ApplicationFiled: December 23, 2009Publication date: April 22, 2010Applicant: OFFSHORE TECHNOLOGY DEVELOPMENT PTE LTDInventors: Kok Seng Foo, Chin Kau Quah
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Publication number: 20100024706Abstract: A system and method for configuring and supporting mooring lines deployed on offshore structures, e.g. Spar-type platform, are provided with recessed portions that are located around the splash/ice zones for “cutting” through waves. An offshore structure may be provided with a chain tensioning mechanism that applies a desired tension to a hull chain and mooring line during mooring. Upon mooring the offshore structure, a chain lock mechanism maintains the tension in the hull chain and mooring line, while the chain tensioning mechanism releases a portion of the hull chain which is to be stored in a chain housing which is fully submerged underwater. This way, the recessed portions of the offshore structure around the splash/ice zones would be substantially free of the hull chains. Additionally, a disconnect mechanism may be provided to allow quick and safe disconnection of the offshore structure from the mooring position.Type: ApplicationFiled: July 29, 2009Publication date: February 4, 2010Applicants: Keppel Offshore & Marine Technology Centre Pte. Ltd., Offshore Technology Development Pte. Ltd.Inventors: Kok Seng FOO, Asbjorn MORTENSEN, Rune HENRIKSEN, Chai Wah KOH, Toh Tung WONG
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Publication number: 20090269144Abstract: The present invention describes an extraction system (100,100a) for expediting removal of a footing (105) that is embedded in a seabed or marine floor. The extraction system provides a supply of pressurized fluid (140) to a chamber from where the pressurized fluid exudes through porous members (122,122a, etc) located on the base (114) of the footing (105). When an uplifting force is applied to the footing (105) for its removal, the pressurized fluid (140) exudes out through the porous member (122,122a, etc.) to compensate or reduce suction induced beneath the footing, without fluidizing or channeling of the seabed soil, thereby expediting removal of the footing (105).Type: ApplicationFiled: May 26, 2009Publication date: October 29, 2009Applicants: Offshore Technology Development Pte Ltd, National University of SingaporeInventors: Kok Seng FOO, Chin Kau QUAH, Okky Ahmad PURWANA, Yean Khow CHOW, Chun Fai LEUNG
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Patent number: 7399142Abstract: A leg guide for use in a leg of a jack up unit adapted to provide sliding guidance of the leg during vertical movement of the leg. The leg guide has a first portion contacting an edge of a leg chord and a second portion contacting a face of the leg chord along a longitudinal plane opposite the contact plane of the first portion. The edge contacting guide has a deflecting guide unit, which uses a compressible member sandwiched between two rigid plates. As the leg moves, the teeth of the leg chord contact the edge guide unit, with the compressible member absorbing compressible loads acting on the leg chord. The second portion provides for a face plate mounted transversely to the edge contacting guide for reducing the build-up of horizontal moment acting on the leg chord during the vertical movement of the leg and for reducing bending moments acting on the leg.Type: GrantFiled: September 15, 2005Date of Patent: July 15, 2008Assignee: Offshore Technology Development Pte Ltd.Inventors: Kok Seng Foo, Chin Kau Matthew Quah, Cheng Choong Chan
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Publication number: 20070243024Abstract: A jackup rig having a built-in capability of driving and extracting piles without need for dedicated pile drivers or extractors. The jackup rig provides an ice breaking functional capability, supplied by a jacking system, for operating in icy waters.Type: ApplicationFiled: June 18, 2007Publication date: October 18, 2007Applicant: OFFSHORE TECHNOLOGY DEVELOPMENT PTE LTDInventors: Kok Foo, Margarita Georgieva, Chin Quah
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Publication number: 20070059106Abstract: The present invention provides a foundation that facilitates the extraction process by minimizing the soil resistance. When the foundation is lowered onto a seabed, it penetrates the seabed and experiences soil resistance therefrom. In particular, the suction generated at the base of the foundation contributes significantly to the soil resistance. The foundation is configured to uniformly distribute pressurized fluid to the base external via a plurality of outlets. The outlets are terminated with an interface layer to allow the transfer of pressurized fluid to the base external and prevent the ingress or seabed sediments into the body. The pressurized fluid released to the base external increases the pore pressure at the base external, thus minimizing the suction at the base.Type: ApplicationFiled: August 24, 2006Publication date: March 15, 2007Applicants: OFFSHORE TECHNOLOGY DEVELOPMENT PTE LTD, NATIONAL UNIVERSITY OF SINGAPOREInventors: Yean Khow Chow, Chun Leung, Okky Purwana, Kok Foo, Chin Quah
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Patent number: 7186061Abstract: The invention relates to mobile offshore jack-up structures and provides for a self-regulating jacking system for elevating and lowering of the legs and the hull. A central controller assembly regulates movement of each of the legs, depending on the relative speed of movement of each leg and inclination of the hull along two independent axes: forward-aft and starboard-port. Each chord of the supporting legs is inverter driven to ensure a bi-directional full rated torque control of the associated pinion assemblies at very low speeds. By regulating the relative speed of the leg vertical movement, the system monitors the hull inclination within allowable limits and prevents an excessive differential vertical travel of any of the leg chords, thereby minimizing a possibility of leg bending or jamming of the screw jacks of the jacking assemblies 30.Type: GrantFiled: September 15, 2005Date of Patent: March 6, 2007Assignee: Offshore Technology Development Pte Ltd.Inventors: Kok Seng Foo, Chuan Beng Tay