Patents Assigned to The Offshore Company
  • Publication number: 20190078281
    Abstract: A method to manufacture a platform for offshore installation by determining one or more properties selected from a group consisting of a desired length, a cargo tonnage requirement, a heavy lift capacity, total buoyancy, and an operating depth of the platform, and designing a hull section, a first jack up rig, and a second jack up rig based on the determined properties. The first designed jack up rig is joined to a first end of the designed hull section, and the second designed jack up rig is joined to a second end of the designed hull section located opposite the first end.
    Type: Application
    Filed: September 12, 2018
    Publication date: March 14, 2019
    Applicant: Exmar Offshore Company
    Inventors: Julian C. Cotaya, III, Kenneth W. Dugas, Otto M. DaSilva, M. Edward Nagel, Jr.
  • Publication number: 20190003290
    Abstract: An improved oil recovery module may include a floating platform, one or more improved oil recovery pods disposed on the floating platform, and one or more injection assemblies fluidly connected to the one or more improved oil recovery pods and configured to be fluidly connected to one or more injection wellheads.
    Type: Application
    Filed: July 3, 2017
    Publication date: January 3, 2019
    Applicant: Exmar Offshore Company
    Inventor: Marcus Hendrik Krekel
  • Patent number: 9845644
    Abstract: A method of manufacturing marine riser buoyancy elements includes providing a master mold and mold inserts such that a range of buoyancy elements may be manufactured from one master mold and providing the mold inserts such that an annular space between the riser main conduit and the buoyancy elements, or a groove width between the buoyancy elements may be varied during manufacture.
    Type: Grant
    Filed: April 21, 2016
    Date of Patent: December 19, 2017
    Assignee: DIAMOND OFFSHORE COMPANY
    Inventors: Donald Paul Howard, Alan Hugh Summers, Harris Allen Reynolds, Jr., Kati Rachelle Andrus
  • Patent number: 9718518
    Abstract: A method of connecting a member to a floating structure, the method includes disposing the floating structure in a body of water and attaching the member to the floating structure. The method also includes changing an orientation of the floating structure and aligning the member with a connection device disposed on a lower portion of the floating structure.
    Type: Grant
    Filed: November 4, 2015
    Date of Patent: August 1, 2017
    Assignee: Exmar Offshore Company
    Inventors: Otto DaSilva, M. Ed Nagel
  • Patent number: 9581289
    Abstract: An attachment system for an offshore structure includes a porch configured to be affixed to the offshore structure, an adaptor configured to engage with one or more plates of the porch, and a latch to retain the adaptor into engagement with the one or more plates, in which the adaptor is configured to support an equipment device. A method of attaching equipment device to a structure includes affixing a porch of an attachment system to the structure, engaging an adaptor with one or more plates of the porch, and attaching an equipment device to the adaptor.
    Type: Grant
    Filed: March 6, 2015
    Date of Patent: February 28, 2017
    Assignee: Exmar Offshore Company
    Inventors: M. Ed Nagel, Otto DaSilva, Harris Knecht
  • Publication number: 20160229493
    Abstract: A method of connecting a member to a floating structure, the method includes disposing the floating structure in a body of water and attaching the member to the floating structure. The method also includes changing an orientation of the floating structure and aligning the member with a connection device disposed on a lower portion of the floating structure.
    Type: Application
    Filed: November 4, 2015
    Publication date: August 11, 2016
    Applicant: Exmar Offshore Company
    Inventors: Otto DaSilva, M. Ed Nagel
  • Patent number: 9145190
    Abstract: A support structure includes a column having multiple sides. A first side and a second side of the column are disposed at a first angle with respect to another. The second side and a third side of the column are disposed at a second angle with respect to another. The third side and a fourth side of the column are disposed at a third angle with respect to another. The fourth side and a fifth side of the column are disposed at a fourth angle with respect to another. The fifth side may be disposed at a fifth angle with respect to a sixth side and/or the first side of the column, in which the sixth side and the first side of the column may be disposed at a sixth angle with respect to another.
    Type: Grant
    Filed: April 12, 2013
    Date of Patent: September 29, 2015
    Assignee: Exmar Offshore Company
    Inventors: Harris Knecht, Otto Dasilva, Marty Knapp
  • Publication number: 20150063922
    Abstract: A semi-submersible offshore structure, including a deck supported by a plurality of support columns, a submersible pontoon structure having the plurality of support columns extending to the deck therefrom, and a support spacer disposed between a sea bed and the pontoon structure.
    Type: Application
    Filed: August 30, 2013
    Publication date: March 5, 2015
    Applicant: Exmar Offshore Company
    Inventors: M. Ed Nagel, Harris Knecht, Otto Dasilva, Zhiyong Yang
  • Publication number: 20140305363
    Abstract: A support structure includes a column having multiple sides. A first side and a second side of the column are disposed at a first angle with respect to another. The second side and a third side of the column are disposed at a second angle with respect to another. The third side and a fourth side of the column are disposed at a third angle with respect to another. The fourth side and a fifth side of the column are disposed at a fourth angle with respect to another. The fifth side may be disposed at a fifth angle with respect to a sixth side and/or the first side of the column, in which the sixth side and the first side of the column may be disposed at a sixth angle with respect to another.
    Type: Application
    Filed: April 12, 2013
    Publication date: October 16, 2014
    Applicant: EXMAR OFFSHORE COMPANY
    Inventors: Harris Knecht, Otto Dasilva, Marty Knapp
  • Patent number: 6546739
    Abstract: An offshore liquefied natural gas regasification system is disclosed, which includes a mobile floating platform having a regasification unit disposed on it. The regasification unit is adapted to operatively couple to an outlet of a liquefied natural gas carrier. The regasification unit is adapted to operatively couple at its outlet to a tap on an offshore gas pipeline. The mobile floating platform is adapted to moor to at least one liquefied natural gas carrier.
    Type: Grant
    Filed: May 23, 2001
    Date of Patent: April 15, 2003
    Assignee: Exmar Offshore Company
    Inventors: Fernando C. Frimm, Johan Robert Karel De Laender, Leo Florent Lucien Cappoen
  • Patent number: 6263818
    Abstract: A drilling or other offshore application vessel which can have the outward appearance and other characteristic of a monohull vessel, comprised of two or more sub-hulls each of which may be sailed as an independent ship through restrictive waterways which would prevent passage of the assembled vessel. The sub-hulls are later joined together to form a composite drilling or other offshore application vessel. The sub-hulls in one example include a recessed portion which reduces the amount of ballast needed to balance the sub-hulls.
    Type: Grant
    Filed: October 12, 1999
    Date of Patent: July 24, 2001
    Assignee: Exmar Offshore Company
    Inventors: Walter A. Dietens, Harris I. Knecht, Fernando C. Frimm
  • Patent number: 6041865
    Abstract: A movable diverter housing including a guide adapted to be mounted to the underside of a drill floor on a drilling rig and a diverter housing adapted to move in engagement with the guide.
    Type: Grant
    Filed: October 31, 1997
    Date of Patent: March 28, 2000
    Assignee: Exmar Offshore Company
    Inventor: Martin R. Knapp
  • Patent number: 4411408
    Abstract: A jack-up platform apparatus operable for effecting relative vertical motion between a leg chord of a platform and a deck of the platform.The jack-up apparatus includes at least one generally rectangular reaction member operable to be connected at one end thereof to the platform deck in a posture contiguous to but spaced from a leg chord of the platform. An abutment member is connected to the other end of the reaction member and first and second leg chord engaging members are mounted for selective translation along the reaction member between the abutment member and the platform deck. A jack asembly is mounted between the first and second leg engaging members for translating the members along the reaction member wherein selective actuation of the first and second leg engaging members and the jack assembly will function to effect relative vertical motion between the platform leg chord and the platform deck while the reaction member reacts bending moments across the width thereof.
    Type: Grant
    Filed: December 3, 1982
    Date of Patent: October 25, 1983
    Assignee: The Offshore Company
    Inventors: Felix S. Radovan, Albert M. Koehler, Donald R. Ray
  • Patent number: 4351258
    Abstract: The invention relates to a method and apparatus for tension mooring an offshore platform having a deck and a plurality of buoyancy columns. An anchor system is initially installed upon the bed of a body of water. Permanent mooring lines are then connected to the anchor system and extend upwardly for support by a buoyancy system located below a lowest portion of the offshore platform and a zone of high oxygen content water adjacent the surface of the body of water. Sacrificial mooring lines are connected to an upper portion of the buoyancy system and extend upwardly through internal conduits with the plurality of bouyancy columns of the floating platform. In the event one of the sacrificial mooring lines becomes damaged the line may be selectively released from the buoyancy system, drawn up through a corresponding interior column and replaced from the deck of the platform.
    Type: Grant
    Filed: April 9, 1980
    Date of Patent: September 28, 1982
    Assignee: The Offshore Company
    Inventors: Donald R. Ray, Riddle E. Steddum
  • Patent number: 4317174
    Abstract: A riser angle positioning system and process provides information for dynamically positioning a floating vessel having a riser extending to a wellhead on the ocean floor. The system comprises an acoustic system for generating acoustic data signals representing the position of the vessel with respect to the wellhead, top and bottom riser inclinometers for generating respective sensor signals indicating angles of deflection of the riser at the top and bottom, respectively, thereof, and a processor responsive to the acoustic data signals and the sensor signals for generating positioning information. The riser angle positioning system and process serve as a backup system and method for checking the acoustic data for large errors, and additionally provide the sole position determining system and method in case of acoustic blackout.
    Type: Grant
    Filed: February 28, 1980
    Date of Patent: February 23, 1982
    Assignee: The Offshore Company
    Inventor: Q. Wayne Dean
  • Patent number: 4281613
    Abstract: A tension mooring system for a floating structure such as a drilling or production platform having a plurality of permanent mooring lines extending upwardly from a plurality of bottom anchors and terminating below the water level and having buoys connected to the upper ends thereof with sufficient buoyancy to maintain the upper end of the mooring lines in a generally vertical posture, replaceable mooring lines connecting from the buoys to the floating structure, the upper position of the permanent mooring lines being preselected to be below a highly corrosive area of the air-sea interface, and a pulling mechanism on the replaceable mooring lines to impart a preselected tension to the mooring lines, the bottom anchors being pre-positioned by drilling and cementing or driving piling through templates.
    Type: Grant
    Filed: November 20, 1979
    Date of Patent: August 4, 1981
    Assignee: The Offshore Company
    Inventors: Donald R. Ray, Riddle E. Steddum
  • Patent number: 4265568
    Abstract: The invention relates to an offshore, gravity base, jack-up platform comprising a deck, a gravity base and one or more legs interconnecting the deck and base. The gravity base comprises a generally polygonal shaped, monolithic hull structure with reaction members extending downwardly from the hull to penetrate the waterbed and react to vertical and lateral loads imposed upon the platform while maintaining the gravity hull in a posture elevated above the surface of the waterbed.A method aspect of the invention includes the steps of towing a gravity base, jack-up platform, as a unit, to a preselected offshore site floating upon the gravity hull. During the towing operation, the deck is mounted adjacent the gravity base with a leg or legs projecting through the deck. At a preselected offshore station ballast is added to the gravity base and the platform descends slightly to a posture where the platform is buoyantly supported by the deck.
    Type: Grant
    Filed: August 6, 1979
    Date of Patent: May 5, 1981
    Assignee: The Offshore Company
    Inventors: Robert P. Herrmann, Floyd T. Pease, Donald R. Ray
  • Patent number: 4260292
    Abstract: The invention relates to an offshore platform operable for use in Arctic locations where prolonged ice conditions may be encountered. The platform includes a lower barge hull having an exterior configuration in the general shape of a rectangular frustum and being operable to be fixed relative to a desired seabed site. The lateral side walls of the barge hull are heated for facilitating movement of contiguous sea ice upwardly relative to the barge side walls to fail the ice in bending as it advances toward the barge hull. A deck is positioned above the lower barge hull and is supported by a first and second column at an elevation whereby the lower surface of the deck will be above and out of contact with sea ice passing over the hull. The deck is positioned relative to the barge hull in a posture such that at least a portion of the deck extends beyond an imaginary vertical plane projecting upwardly from at least one longitudinal edge of the upper surface of the barge hull.
    Type: Grant
    Filed: October 25, 1979
    Date of Patent: April 7, 1981
    Assignee: The Offshore Company
    Inventors: Riddle E. Steddum, Theodore H. Nezames, Terrence M. Smith, Bruce L. Crager
  • Patent number: 4255069
    Abstract: The invention relates to a jack-up platform locking apparatus. The subject locking apparatus includes a frame operable to be securely connected to a deck of the platform and a lock unit having at least one tooth for engaging a compatibly configured surface upon a vertically adjustable platform leg. Hydraulic motor means are provided for vertically adjusting the lock with respect to the deck and leg. An additional hydraulic motor is provided for horizontally actuating or deactuating the lock with respect to the platform leg. The invention further includes a mechanical assembly for vertically securing an engaged lock with respect to the platform deck. A reaction wedge member is provided for horizontally securing the lock in firm engagement with the leg of the offshore platform.
    Type: Grant
    Filed: August 1, 1979
    Date of Patent: March 10, 1981
    Assignee: The Offshore Company
    Inventor: Ralph D. Yielding
  • Patent number: 4198179
    Abstract: A riser for production of oil and gas in a marine location with the riser connected to the casing supported at the mud line of a body of water and extending upward in the water to a tension moored floating structure. The riser includes a flexible joint near its connection to the casing and is supported at its upper end from the floating structure and is also supported from the floating structure at a point between 50 and 175 feet below the water level. A production string extends upwardly from the producing zone through the casing, the flexible joint and the riser to the floating structure and wellhead equipment is supported on such riser. Centralizers are provided for the production string with the centralizer immediately above the flexible joint being between 35 to 65% of the total distance between such centralizer and the centralizer positioned immediately below the flexible joint.
    Type: Grant
    Filed: August 11, 1978
    Date of Patent: April 15, 1980
    Assignee: The Offshore Company
    Inventors: Floyd T. Pease, Donald R. Ray, Riddle E. Steddum, Bruce L. Crager