Patents by Inventor Okky Ahmad Purwana
Okky Ahmad Purwana has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
-
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
-
Patent number: 8668408Abstract: The present invention provides a skirted foundation that can be used in a jack-up rig for providing enhanced bearing capacity. The skirted foundation comprises a spudcan footing having an upper part and a base, wherein the upper part and the base are coupled at their peripherals to form an outer edge, wherein both the upper part and the base have a flat or conical configuration, and wherein the upper part supports one leg of a jack-up rig, and the base has a flat bottom or downward slope, and a skirt having an upper end being integrally coupled to the spudcan footing and downwardly projected to encircle the base and a lower end for penetrating seabed, wherein the skirt comprises a plurality of circumferential openings adjacent to the base of the spudcan footing and located within the top half of the skirt height.Type: GrantFiled: March 7, 2012Date of Patent: March 11, 2014Assignee: Keppel Offshore & Marine Technology Centre Pte LtdInventors: Kok Seng Foo, Chin Kau Quah, Okky Ahmad Purwana, Henry Krisdani
-
Publication number: 20120230773Abstract: The present invention provides a skirted foundation that can be used in a jack-up rig for providing enhanced bearing capacity. The skirted foundation comprises a spudcan footing having an upper part and a base, wherein the upper part and the base are coupled at their peripherals to form an outer edge, wherein both the upper part and the base have a flat or conical configuration, and wherein the upper part supports one leg of a jack-up rig, and the base has a flat bottom or downward slope, and a skirt having an upper end being integrally coupled to the spudcan footing and downwardly projected to encircle the base and a lower end for penetrating seabed, wherein the skirt comprises a plurality of circumferential openings adjacent to the base of the spudcan footing and located within the top half of the skirt height.Type: ApplicationFiled: March 7, 2012Publication date: September 13, 2012Applicant: KEPPEL OFFSHORE & MARINE TECHNOLOGY CENTRE PTE LTD.Inventors: KOK SENG FOO, CHIN KAU QUAH, OKKY AHMAD PURWANA, HENRY KRISDANI
-
Patent number: 8146418Abstract: An apparatus for soil testing for a jack-up rig, the apparatus comprising a soil testing device integrated with a leg of the jack-up rig, the leg of the jack-up rig having a footing, an opening in the footing for allowing passage of an active portion of the soil testing device therethrough to obtain soil data from a seabed beneath the footing, and a retrieval assembly for retrieving the soil testing device.Type: GrantFiled: September 2, 2008Date of Patent: April 3, 2012Assignees: Keppel Offshore & Marie Technology Centre Pte Ltd, A.P. van den Berg Holding bvInventors: Kok Seng Foo, Chin Kau Quah, Okky Ahmad Purwana, Lodewijk Keizer, Mark Felton Randolph, Mark Jason Cassidy
-
Patent number: 8025463Abstract: The present invention describes an offshore foundation system (10,10a,10b) that is operable for preloading after self-weight installation on a seabed without relying on additional or external ballasts. The foundation system (10,10a,10b) is also operable for extraction by reversing the process of preload operation. In one embodiment, the foundation system (10) comprises a reaction base (20) and suction compartment (60). In another, the foundation system (10a,10b) comprises a plurality of units of reaction base (20) and suction compartments (60), with the units being connected by bridging structures (21). In yet another, the foundation system comprises a reaction base (20) and a plurality of suction compartments (60). A closed-top of the suction compartment (60) projects above the reaction base (20) so that, in use, there is a gap h between a top of a soil plug inside a suction compartment (60) and its closed-top.Type: GrantFiled: May 28, 2009Date of Patent: September 27, 2011Assignees: Keppel Offshore & Marine Technology Centre Pte Ltd, University of Western AustraliaInventors: Kok Seng Foo, Chin Kau Quah, Okky Ahmad Purwana, Mark Jason Cassidy, Christophe Rene Henri Gaudin
-
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
-
Publication number: 20100050764Abstract: An apparatus for soil testing for a jack-up rig, the apparatus comprising a soil testing device integrated with a leg of the jack-up rig, the leg of the jack-up rig having a footing, an opening in the footing for allowing passage of an active portion of the soil testing device therethrough to obtain soil data from a seabed beneath the footing, and a retrieval assembly for retrieving the soil testing device.Type: ApplicationFiled: September 2, 2008Publication date: March 4, 2010Applicants: KEPPEL OFFSHORE & MARINE TECHNOLOGY CENTRE PTE LTD, A.P. VAN DEN BERG HOLDING BVInventors: Kok Seng FOO, Chin Kau QUAH, Okky Ahmad PURWANA, Lodewijk KEIZER, Mark Felton RANDOLPH, Mark Jason CASSIDY
-
Publication number: 20090297276Abstract: The present invention describes an offshore foundation system (10,10a,10b) that is operable for preloading after self-weight installation on a seabed without relying on additional or external ballasts. The foundation system (10,10a,10b) is also operable for extraction by reversing the process of preload operation. In one embodiment, the foundation system (10) comprises a reaction base (20) and suction compartment (60). In another, the foundation system (10a,10b) comprises a plurality of units of reaction base (20) and suction compartments (60), with the units being connected by bridging structures (21). In yet another, the foundation system comprises a reaction base (20) and a plurality of suction compartments (60). A closed-top of the suction compartment (60) projects above the reaction base (20) so that, in use, there is a gap h between a top of a soil plug inside a suction compartment (60) and its closed-top.Type: ApplicationFiled: May 28, 2009Publication date: December 3, 2009Applicants: Keppel Offshore & Marine Technology Centre Pte Ltd, University of Western AustraliaInventors: Kok Seng Foo, Chin Kau Quah, Okky Ahmad Purwana, Mark Jason Cassidy, Christophe Rene Henri Gaudin
-
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