Means To Provide Protective Environment For Operative Access Below Surface Of Water Patents (Class 166/356)
  • Patent number: 10655406
    Abstract: A horizontal connection system including: a first holding unit, to which a first hub is fixed; a second holding unit, to which a second hub is fixed; a heat bank including a casing with a rear part secured to the first holding unit and a front part releasably connectable to the rear part; and a clamp connector secured to the first holding unit and received inside the heat bank. The parts of the casing are temporarily fixed to each other by connecting members extending between the parts on the outside thereof. The front part of the casing is provided with fastening members configured to come into engagement with associated fastening members on the second holding unit, to thereby allow the front part to be secured to the second holding unit, when the front part and the second holding unit are brought into contact with each other.
    Type: Grant
    Filed: April 18, 2017
    Date of Patent: May 19, 2020
    Assignee: VETCO GRAY SCANDINAVIA AS
    Inventors: Olav Hande, Rolf Bastesen, Odd Marius Rosvold
  • Patent number: 10538986
    Abstract: Techniques and systems to provide pressure reduction of a fluid, for example, from a well. A device includes an input configured to be fluidly coupled to a well control device. The device also includes an output configured to be to be fluidly coupled to the well control device. The device further includes at least one valve configured to alter a pressure of a fluid received at the input and transmitted from the output.
    Type: Grant
    Filed: September 18, 2017
    Date of Patent: January 21, 2020
    Assignee: Ensco International Incorporated
    Inventors: Christopher Scott Stewart, Benjamin Matthew Riley, Steven Andrew Leppard, Justin Dow Alcorn
  • Patent number: 10508518
    Abstract: A system for connecting flow interface equipment to a subsea tree or manifold is disclosed. The system relates to an apparatus adapted to inject fluids into a well having a flow bore. The system includes a connection apparatus adapted to land a conduit on a subsea tree or manifold and to connect the conduit of the connection apparatus to an access port or choke body of the tree or manifold.
    Type: Grant
    Filed: December 14, 2016
    Date of Patent: December 17, 2019
    Assignee: OneSubsea IP UK Limited
    Inventors: Ian Donald, John Reid, Alan Crawford, Paul W. White
  • Patent number: 10355334
    Abstract: An underwater connector includes a first component and a second component, wherein the components are operable to be coupled together in operation in a first coupled state, and operable to be mutually spatially separated in a second uncoupled state. The first and second components each include communication arrangements which are operable to provide wireless communication between the first and second components when in their first coupled state. The first and second components include a power transfer arrangement for transmitting power between the first and second components. The power transfer arrangement includes inductive coupling devices and/or capacitive coupling devices, wherein the power transfer arrangement is implemented substantially as an annulus, for example circular, elliptical, or polygonal, on the first and second components together with the communication arrangements being disposed within the annulus and/or around a periphery of the annulus.
    Type: Grant
    Filed: October 4, 2016
    Date of Patent: July 16, 2019
    Assignee: WiSub AS
    Inventors: Mark Bokenfohr, Tomasz Ciamulski
  • Patent number: 10160528
    Abstract: A handling device (1) for an installable and retrievable subsea apparatus (2) to engage a docking device (3) on a subsea installation, the docking device (3) having a pair of engagement members (4, 5). The device (1) is provided with a top member (6) and a pair of engagement arms (7, 8) depending therefrom to extend along the outside of the apparatus (2). Each of the arms (7, 8) at a free end thereof is provided with a hook (7?, 8?) configured to engage in releasable way the engagement members (4; 5). A rotatable handle (9) is located above the top member (6) and has an integral or linked stem (10) which extends through the top member (6) and is pivotally linked to a top region of the apparatus (2). The handle (9) is able to operate the engagement arms (7, 8) relative to the engagement members (4,5).
    Type: Grant
    Filed: September 17, 2015
    Date of Patent: December 25, 2018
    Assignee: Aker Solutions AS
    Inventors: Michal Sebastian Lamentowicz, Viggo Lauritz Norum, Roald Pedersen, Lars Lein, Jan Øyen, Odd Harald Brøndbo, Devraj Sonavane, Einar Winther-Larssen
  • Patent number: 10161247
    Abstract: An ROV-mountable flush and sample skid is described that reduces the project cost and deliveries, and also improves HSE risk during Subsea Pump installation campaigns. The ROV skid can be configured as part of a standard ROV tooling across different projects. The tool also reduces the total pump module installation weight that is important in deepwater applications. The ROV-mountable flushing and sampling skid is mounted to an ROV and deployed to a subsea location to provide flushing of and sampling of barrier oil from a barrier oil supply jumper from an subsea umbilical termination assembly. The Subsea pump flushing and sampling ROV skid includes of a set of flush accumulators with enough capacity to flush the installed jumpers clean, and also one or more sample accumulators configured to sample the barrier oil after the flushing has been performed.
    Type: Grant
    Filed: November 26, 2014
    Date of Patent: December 25, 2018
    Assignee: OneSubsea IP UK Limited
    Inventor: Jostein Tvedt
  • Patent number: 9670733
    Abstract: Systems and methods for drilling multiple wells include a landing template, the landing template having at least two through bores. Each through bore extends from a first face of the landing template to an opposite second face of the landing template. A skirt conductor is secured to the landing template, the skirt conductor operable to be driven into a sea floor so that the landing template is proximate to a mudline. A bore separator guide has a drill bit guide sized to register with one of the through bores. The bore separator guide is moveable to align with each of the at least two through bores one at a time.
    Type: Grant
    Filed: January 21, 2016
    Date of Patent: June 6, 2017
    Assignee: GE Oil & Gas Pressure Control LP
    Inventor: Hoong Man Ng
  • Patent number: 9593540
    Abstract: A dual-BOP or multi-BOP self-standing riser configuration is disclosed, including at least a riser or another similarly fixed tubular structure disposed in communication with an associated drilling vessel and a subsurface well. The system supplements the traditional mud-line level BOP with one or more additional near-surface BOPs, which are tensioned using an adjustable buoyancy chamber rather than by means of a vessel-born tensioning device.
    Type: Grant
    Filed: May 15, 2013
    Date of Patent: March 14, 2017
    Inventor: Keith K. Millheim
  • Patent number: 9534474
    Abstract: A system for connecting flow interface equipment to a subsea tree or manifold is disclosed. The system relates to an apparatus adapted to inject fluids into a well having a flow bore. The system includes a connection apparatus adapted to land a conduit on a subsea tree or manifold and to connect the conduit of the connection apparatus to an access port or choke body of the tree or manifold.
    Type: Grant
    Filed: February 15, 2016
    Date of Patent: January 3, 2017
    Assignee: OneSubsea IP UK Limited
    Inventors: Ian Donald, John Reid, Alan Crawford, Paul W. White
  • Patent number: 9534467
    Abstract: According to one aspect, an apparatus is adapted to be operably coupled to a subsea blowout preventer and includes a first tubular member defining an internal passage, and a second tubular member extending within the internal passage. A sealing assembly is disposed radially between the first and second tubular members, and includes a sealing element. The second tubular member covers the sealing element and thus facilitates protecting the sealing element from any fluid flow through the internal passage. According to another aspect, a sealing element of a connector is protected before engaging the connector with a subsea casing. The connector is engaged with the casing while the sealing element is protected so that the sealing element is fluidically isolated from any fluid flow through the connector. The sealing element sealingly engages the casing.
    Type: Grant
    Filed: September 30, 2015
    Date of Patent: January 3, 2017
    Assignee: SEABOARD INTERNATIONAL, INC.
    Inventors: Jerry Keith Rhodes, Kenneth Bean, Paul Horton, Jr.
  • Patent number: 9322220
    Abstract: A drilling system including a drill head. The drill head defines a drill head bore and includes a drill head bore closure device. An inner core barrel and an inner core barrel retrieval device may be passed through the interior of the drill string and the drill head bore when the drill head is connected with the drill string and the drill head bore closure device is actuated to an open position. A method of wireline core drilling which includes passing an inner core barrel retrieval device through the drill head bore and into the interior of the drill string when the drill head is connected with the drill string, and removing an inner core barrel and the inner core barrel retrieval device from the interior of the drill string through the drill head bore when the drill head is connected with the drill string.
    Type: Grant
    Filed: June 30, 2010
    Date of Patent: April 26, 2016
    Assignee: Marl Technologies
    Inventors: Ronald W. Innes, Daniel P. Teeuwsen, Dustyn J. L. Elford, John T. Hackett, Mark Gurnett, Tan N. Nguyen, Donald B. Grass
  • Patent number: 9260944
    Abstract: A system for connecting flow interface equipment to a subsea manifold is disclosed. The system relates particularly to an apparatus adapted to inject fluids into a well having a flow bore. The system includes a connection apparatus adapted to land a conduit means on a subsea manifold and to connect a conduit means of the connection apparatus to a choke body of the manifold.
    Type: Grant
    Filed: May 20, 2014
    Date of Patent: February 16, 2016
    Assignee: ONESUBSEA IP UK LIMITED
    Inventors: Ian Donald, John Reid, Alan Crawford, Paul W. White
  • Patent number: 9175551
    Abstract: According to one aspect, an apparatus is adapted to be operably coupled to a subsea blowout preventer and includes a first tubular member defining an internal passage, and a second tubular member extending within the internal passage. A sealing assembly is disposed radially between the first and second tubular members, and includes a sealing element. The second tubular member covers the sealing element and thus facilitates protecting the sealing element from any fluid flow through the internal passage. According to another aspect, a sealing element of a connector is protected before engaging the connector with a subsea casing. The connector is engaged with the casing while the sealing element is protected so that the sealing element is fluidically isolated from any fluid flow through the connector. The sealing element sealingly engages the casing.
    Type: Grant
    Filed: December 3, 2013
    Date of Patent: November 3, 2015
    Assignee: Seaboard International, Inc.
    Inventors: Jerry Keith Rhodes, Kenneth Bean, Paul Horton, Jr.
  • Patent number: 9163482
    Abstract: There is provided a subsea system for increasing pressure and/or flow rate in a flow line, the subsea system being arranged in fluid communication with said flow line which receives fluid from at least one fluid source. The subsea system comprises at least one compressor or pump and at least one subsea cooler which is arranged in the flow line in series with the at least one compressor. The subsea system further comprises a recirculation line which is configured such that at least a portion of the fluid flowing in the flow line downstream the at least one compressor and the at least one subsea cooler may be recirculated back to the flow line upstream the at least one compressor and the at least one subsea cooler such that the recirculating line can be used for capacity regulation of the at least one compressor and cleaning of the at least one subsea cooler.
    Type: Grant
    Filed: March 29, 2010
    Date of Patent: October 20, 2015
    Assignee: Framo Engineering AS
    Inventors: Stig Kare Kanstad, Asmund Valland, Nils-Egil Kangas, Atle Berle
  • Patent number: 9074446
    Abstract: A system (10) for managed pressure drilling, or for workover of a hydrocarbon well with a wellhead, the system comprising a floating structure that is located in a body of water (41). A method is also described for connecting up the system for managed pressure drilling or well workover. The floating structure comprises a drill floor (13) and a work deck (14) that is movably arranged in an essentially vertical direction in relation to the drill floor. The system further comprises a riser (28) and a slip joint (32) that is connected to the underside of the work floor and to the upper end of the riser such that the work deck can be moved relative to the riser. The riser extends from the slip joint down to a wellhead valve device (40) arranged on the wellhead of the hydrocarbon well. The floating arrangement also comprises heave-compensated riser tensioners (17) which are connected to the slip joint such that the riser is held under tension.
    Type: Grant
    Filed: March 23, 2012
    Date of Patent: July 7, 2015
    Assignee: MOSS MARITIME AS
    Inventors: Per Herbert Kristensen, Lars Martin Sørhaug, Knut A. Sveen, Morten Bøhlerengen
  • Patent number: 9054512
    Abstract: A method of installing an off-shore tidal hydroelectric turbine generator is described. The method provides for a number of safety features, ensuring that all components are safe to handle during the installation operation, and also ensuring that the turbine will not start spinning during the installation operation.
    Type: Grant
    Filed: December 17, 2009
    Date of Patent: June 9, 2015
    Assignee: OpenHydro IP Limited
    Inventors: James Ives, David Taaffe, Paul Dunne
  • Patent number: 8960305
    Abstract: A method of monitoring a subsea pipeline system connecting one or more wells to a floating production system, wherein the pipeline system is at least partially flexible, the method comprises installing a continuous optical fiber distributed sensor as part of the pipeline system, the sensor capable of providing a distributed measurement of temperature, vibration, pressure or strain, or any combination thereof; using the sensor to obtain a distributed measurement of temperature, vibration, pressure and/or strain along at least part of the pipeline system indexed to a length thereof; and using the distributed measurement to predict the actual condition of the fluid, the pipeline system and/or the adjacent sea water using a model.
    Type: Grant
    Filed: January 7, 2009
    Date of Patent: February 24, 2015
    Assignee: Schlumberger Technology Corporation
    Inventors: Dominic McCann, Daniel Sack, Morten Stenhaug
  • Patent number: 8881843
    Abstract: The present invention relates to a managed pressure and/or temperature drilling system (300) and method. In one embodiment, a method for drilling a wellbore into a gas hydrates formation is disclosed. The method includes drilling the wellbore into the gas hydrates formation; returning gas hydrates cuttings to a surface of the wellbore and/or a drilling rig while controlling a temperature and/or a pressure of the cuttings to prevent or control disassociation of the hydrates cuttings.
    Type: Grant
    Filed: February 9, 2007
    Date of Patent: November 11, 2014
    Assignee: Weatherford/Lamb, Inc.
    Inventors: Richard J. Todd, Don M. Hannegan, Simon J. Harrall
  • Patent number: 8464745
    Abstract: A pressure equalizer for an underwater vessel can include a pneumatic reservoir and a pressure compensating valve (PCV). The PCV can be in fluid communication with the surrounding underwater environment and the vessel interior, and in selective fluid communication with the reservoir. The PCV can further include a valve body and a valve plug. As the PCV opens, the plug moves within the body to establish a path of fluid communication from the reservoir, through the PCV to the vessel interior, to allow flow of high pressure compressible fluid from the reservoir into the interior to pressurize the vessel interior. As the vessel interior pressure equalizes with the surrounding environment, the plug moves within the body to close the fluid communication path with the reservoir, thereby stopping the flow of compressible fluid into the vessel interior to maintain the equalized pressure.
    Type: Grant
    Filed: November 2, 2010
    Date of Patent: June 18, 2013
    Assignee: The United States of America, as Represented by the Secretary of the Navy
    Inventor: Charles Ringer
  • Patent number: 8430171
    Abstract: Several, preferably three, deflection elements are placed and fixed around the wellhead, preferably in equal circumferential distances around the wellhead. For each deflection element a guiding cable is lowered with its head end from one or several, preferably three workspaces in the direction of the wellhead. Each guiding cable is looped with its head end through the corresponding deflection element, wherein each deflection element forms a point of reversal. Each guiding cable is pulled back with its head end side to the corresponding workspace while in return additional guiding cable is supplied and passed through the corresponding deflection element. A sealing element which is fastened to each guiding cable is lowered in the direction of the wellhead by pulling the guiding cables at their head end sides upwards and, in return, supplying the guiding cables in the direction of the wellhead on the lowering side.
    Type: Grant
    Filed: July 1, 2010
    Date of Patent: April 30, 2013
    Inventor: David Robb Cochrane
  • Patent number: 8403065
    Abstract: A riser for use in boring a subsea wellbore having a gooseneck assembly connected onto the riser. The gooseneck assembly has an outlet that couples with a flowline on the riser and a connector assembly that selectively decouples the gooseneck assembly from the flowline. A release member, such as a wire, cable, or rod, is attached to the connector so the connector assembly can be actuated by manipulating the release member from a remote location.
    Type: Grant
    Filed: September 4, 2009
    Date of Patent: March 26, 2013
    Assignee: Detail Designs, Inc.
    Inventors: Robert H. Taylor, Arthur Jones
  • Patent number: 8196665
    Abstract: A method and apparatus are described for containing an oil spill caused by a subsea blowout, (i.e., a source of pollution located on a floor of an ocean, (e.g., a defective blowout preventer (BOP) that caused the oil spill)). A cylindrical containment assembly may be positioned such that a wall of the cylindrical containment assembly circumvents a portion of a floor of an ocean where the subsea blowout occurred. At least one mud flap may be configured to selectively protrude from the wall or retract into the wall when activated to control the depth that the cylindrical containment assembly sinks to below the ocean floor. A valve assembly may be positioned on the top perimeter of the wall. The top perimeter of the wall may have the same diameter as the outer perimeter of the valve assembly.
    Type: Grant
    Filed: July 23, 2010
    Date of Patent: June 12, 2012
    Assignee: Subsea IP Holdings LLC
    Inventor: Scott Wolinsky
  • Patent number: 8186443
    Abstract: A method and apparatus are described for containing an oil spill caused by a subsea blowout. A blowout preventer (BOP) stack, located on a floor of an ocean, may be circumvented with a hollow wall of a cylindrical containment assembly. The containment assembly may be reinforced by filling the wall with cement. A valve assembly having a hollow cavity may be positioned on a top perimeter of the wall and may be reinforced by filling the cavity with cement. Alternatively, a cylindrical containment assembly may be positioned such that a wall of the assembly circumvents a portion of a floor of an ocean where a subsea blowout occurred and at least one of oil or gas is spewing into the ocean. The wall may be reinforced with cement, a valve assembly may be positioned on a top perimeter of the wall, and the valve assembly may be reinforced with cement.
    Type: Grant
    Filed: November 17, 2010
    Date of Patent: May 29, 2012
    Assignee: Subsea IP Holdings LLC
    Inventor: Scott Wolinsky
  • Patent number: 8111502
    Abstract: An arrangement related to subsea electric power distributing AC-system and adapted for a subsea application. The arrangement is enclosed in a watertight casing. The casing exposes a main power input connection, adapted for watertight co-ordination with a first subsea cable and a main power output connection, adapted for a watertight co-ordination with a second subsea cable. The second subsea cable is adapted for a power supply to an AC-current and AC-voltage adapted device. The arrangement includes interconnected: a voltage regulator connected to the first cable, and a NO-load switching unit connected to the second cable, and a control unit. The control unit is adapted, in a first operative mode, to regulate the output AC-voltage from the voltage regulator towards and to zero, or at least almost to zero, and in a second subsequent operative mode, to bring the NO-load switching unit from an ON-position to an OFF-position or vice versa.
    Type: Grant
    Filed: July 2, 2008
    Date of Patent: February 7, 2012
    Assignee: Vetco Gray Scandinavia AS
    Inventor: Svend Rocke
  • Publication number: 20110284235
    Abstract: A dual-BOP or multi-BOP self-standing riser configuration is disclosed, including at least a riser or another similarly fixed tubular structure disposed in communication with an associated drilling vessel and a subsurface well. The system supplements the traditional mud-line level BOP with one or more additional near-surface BOPs, which are tensioned using an adjustable buoyancy chamber rather than by means of a vessel-born tensioning device.
    Type: Application
    Filed: May 3, 2011
    Publication date: November 24, 2011
    Inventor: Keith K. Millheim
  • Patent number: 8025103
    Abstract: A method and apparatus are described for stopping oil and/or gas from spewing from a defective blowout preventer (BOP) stack located on a floor of an ocean by entombing the defective BOP stack. A containment assembly, which is lowered below a surface of the ocean, includes a hollow wall and a large diameter high pressure valve mounted on an upper opening of the containment assembly. The large diameter high pressure valve is maintained in an open position. The containment assembly is positioned on a portion of the ocean floor such that a hollow inner cavity of the containment assembly circumvents the defective BOP stack. The hollow wall is filled with reinforcement material via a first set of valves, and the hollow inner cavity is filled with reinforcement material via a second set of valves. The upper opening may also then be filled with reinforcement material.
    Type: Grant
    Filed: July 21, 2010
    Date of Patent: September 27, 2011
    Assignee: Subsea IP Holdings LLC
    Inventor: Scott Wolinsky
  • Publication number: 20110056701
    Abstract: A riser for use in boring a subsea wellbore having a gooseneck assembly connected onto the riser. The gooseneck assembly has an outlet that couples with a flowline on the riser and a connector assembly that selectively decouples the gooseneck assembly from the flowline. A release member, such as a wire, cable, or rod, is attached to the connector so the connector assembly can be actuated by manipulating the release member from a remote location.
    Type: Application
    Filed: September 4, 2009
    Publication date: March 10, 2011
    Applicant: Detail Design, Inc.
    Inventors: Arthur Jones, Robert H. Taylor
  • Publication number: 20100326665
    Abstract: The present invention generally relates to methods and apparatus for subsea well intervention operations, including retrieval of a wellhead from a subsea well. In one aspect, a method of performing an operation in a subsea well is provided. The method comprising the step of positioning a tool proximate a subsea wellhead. The tool has at least one grip member and the tool is attached to a downhole assembly. The method also comprising the step of clamping the tool to the subsea wellhead by moving the at least one grip member into engagement with a profile on the subsea wellhead. The method further comprising the step of applying an upward force to the tool thereby enhancing the grip between the grip member and the profile on the subsea wellhead. Additionally, the method comprising the step of performing the operation in the subsea well by utilizing the downhole assembly. In another aspect, an apparatus for use in a subsea well is provided.
    Type: Application
    Filed: June 24, 2009
    Publication date: December 30, 2010
    Inventors: Thomas M. Redlinger, Andrew Antoine, My Le, Richard J. Segura
  • Patent number: 7823643
    Abstract: The present invention is directed to an insulation shroud with internal support structure. In one illustrative embodiment, the insulation shroud includes a body adapted to be positioned around a subsea component, the body including an insulating material having an internal support structure positioned therein and a door.
    Type: Grant
    Filed: June 4, 2007
    Date of Patent: November 2, 2010
    Assignee: FMC Technologies Inc.
    Inventors: Henry Wong, Michael Mann
  • Patent number: 7793725
    Abstract: The present invention relates to overpressure protection systems and methods for use on a production system for transferring hydrocarbons from a well on the seafloor to a vessel floating on the surface of the sea. The production system includes a subsea well in fluid communication with a turret buoy through a production flowline and riser system. The turret buoy is capable of connecting to a swivel located on a floating vessel. The overpressure protection device is positioned upstream of the swivel, to prevent overpressure of the production swivel and downstream components located on the floating vessel. The device may include one or more shut down valves, one or more sensors, an actuator assembly, and a control processor. Each shut down valve and sensor is coupled to a production flowline. Each of the sensors is capable of generating a signal based upon a pressure sensed within the production flowline. The actuator assembly is connected to each of the shut down valves for operating the shut down valves.
    Type: Grant
    Filed: December 6, 2006
    Date of Patent: September 14, 2010
    Assignee: Chevron U.S.A. Inc.
    Inventors: Jeremiah Daniel, Jin-Sug Chung, Ramanathan Ramaswamy, Joseph M. Gebara, John L. Upchurch
  • Patent number: 7770651
    Abstract: A submersible process environment for sub-sea processing is provided. Such environment can include a modular encapsulated unit having an interior volume and one or more processing units disposed therein, a first valve in fluid communication with the interior and exterior of the unit, and a second valve in fluid communication with the interior and exterior of the unit. The first valve and the second valve can be in fluid communication with the processing unit, and the processing unit can receive a fluid from the first valve and discharges the fluid to the second valve.
    Type: Grant
    Filed: February 13, 2007
    Date of Patent: August 10, 2010
    Assignee: Kellogg Brown & Root LLC
    Inventors: Drew Linden Krehbiel, Richard D'Souza
  • Patent number: 7745379
    Abstract: A method of insulating pipeline bundles used in recovering hydrocarbons from wells is disclosed. A polymeric substance, such as an orthophosphate ester, is injected into the annulus between a carrier pipe and the hydrocarbon conveying tubulars. A ferric salt, such as ferric sulphate, may be added as a gelling agent. The mixture results in a gel having a dynamic viscosity of greater than (1000) PaS. The gel insulates the inner hydrocarbon-conveying tubulars from the surrounding seawater thus helping to maintain the relatively high temperature therewithin. This in turn reduces the likelihood for chemicals, such as hydrates, to be precipitated out of the oil phase.
    Type: Grant
    Filed: June 3, 2004
    Date of Patent: June 29, 2010
    Assignee: Aubin Limited
    Inventor: Patrick Joseph Collins
  • Patent number: 7735561
    Abstract: A method and system for performing intervention and workover operations on a subsea well are provided, as well as an adapter for connecting a lower end portion of a conduit extending from a vessel with an upper portion of a lower marine riser package associated with a subsea tree. The method includes providing a lower marine riser package connected to an upper portion of a subsea tree associated with a subsea well, and a conduit extending from a vessel toward the lower marine riser package. The conduit is connected to the lower marine riser package with an adapter. A portion of a conduit bore of the conduit above the adapter is sealed from a chamber in the adapter, and a portion of a bore extending through the lower marine riser package is sealed from the chamber. The adapter is opened for access to the chamber from the sea.
    Type: Grant
    Filed: February 25, 2008
    Date of Patent: June 15, 2010
    Assignee: Chevron U.S.A. Inc.
    Inventors: Mark Alan Johnson, Dana Earl Witt, James David Dowell
  • Patent number: 7703534
    Abstract: A subsea drilling system comprises a pressurized drilling capsule that is sealed against the subsea environment and houses equipment for manipulating a drillstring that extends through an opening in the drilling capsule to the exterior of the capsule. A drilling fluid handling assembly is contained within the drilling capsule that communicates drilling fluid through the drillstring and returns the drilling fluid to the water's surface via a drilling fluid conduit. A seafloor unit engages the seafloor and the drilling capsule to position the drilling capsule relative to the seafloor, and includes an opening for passing the drillstring into the seafloor. A pressurized transport unit is movable between the drilling capsule and a support vessel at or near the water's surface for delivering personnel and supplies to the drilling capsule. A method of drilling using the subsea drilling system is disclosed.
    Type: Grant
    Filed: October 19, 2006
    Date of Patent: April 27, 2010
    Inventor: Adel Sheshtawy
  • Patent number: 7694743
    Abstract: A ROV-deployable gas hydrate diverter comprising a body having a circular disc shape with a center hole, and a handle attached to and protruding from a surface of the body, wherein the handle is adapted to be grasped by the grasping arm of an ROV to facilitate installation of the gas hydrate diverter over a subsea wellhead.
    Type: Grant
    Filed: April 12, 2006
    Date of Patent: April 13, 2010
    Inventor: Michael Dean Arning
  • Patent number: 7654328
    Abstract: A subsea gas compressor module having a housing comprising a sealing element generally defining within the pressure housing a first compartment holding as compressor and a second compartment holding an electric motor, the compressor and motor being driveably connected by at least one shaft. The first compartment is connected to an inlet line and an outlet line for sealing hydro carbon gas and for discharging gas. The second compartment has magnetic bearings for supporting the at least one shaft, and a pressure and volume regulator is fluidly connected to the second compartment and a gas supply, and includes elements for sensing respective pressures in the inlet and outlet lines whereby, based on the magnitude of sensed pressure, the pressure and volume regulator controls the pressure at which gas is injected into the second compartment.
    Type: Grant
    Filed: July 1, 2004
    Date of Patent: February 2, 2010
    Assignee: Aker Subsea AS
    Inventors: Kjell Olav Stinessen, H{dot over (a)}kon Skofteland
  • Patent number: 7621338
    Abstract: A wellhead assembly includes a tree cap having a production mandrel extending down into a production passage of a Christmas tree to form a seal. The tree has an annulus bore and an annular cavity at the upper end of the tree surrounding the upper ends of the production and annulus bore. A communication gallery leads between the annulus bore and the cavity. The tree cap also includes an annular sealing member that enters the cavity for sealing a communication gallery.
    Type: Grant
    Filed: July 27, 2007
    Date of Patent: November 24, 2009
    Assignee: Vetco Gray Inc.
    Inventors: Michael A. Wenham, Alistair D. Crozier
  • Patent number: 7600570
    Abstract: A drilling placed on the seabed and arranged for drilling of oil and gas wells is remote controlled from a light drilling vessel (2) through pipes and signal cables (3). The main structure of the drilling rig is made up of two cylindrical structures (1 and 10), in connection with which there is provided a number of cylindrical silos (8) for storing drill pipe magazines (23). A complete drilling module (17) can be lowered and retrieved through hatchways (11) at the top of the first cylindrical structure 10 The drilling rig is anchored to a foundation frame (7) by hydraulic legs (9). A cylindrical skirt (34) encloses the BOP (33) to prevent pollution of the environment.
    Type: Grant
    Filed: April 12, 2007
    Date of Patent: October 13, 2009
    Assignee: Seabed Rig AS
    Inventor: Per Olav Haughom
  • Patent number: 7575254
    Abstract: A stiffener fixation assembly fixed to the outer cover of a flexible tube, the flexible tube being in contact with a stiffener in an I-tube, at the end of which a bell mouth may be fixed, whereby the stiffener fixation assembly is located between the outer surface of the flexible tube and the inner wall of a centralizer and comprises rotary pieces that are axially movable with respect to the inner wall of the I-tube and capable of eliminating the relative movement between the flexible tube and the stiffener.
    Type: Grant
    Filed: August 31, 2004
    Date of Patent: August 18, 2009
    Assignee: Technip France
    Inventors: Gaspar Cunha Xavier, Fred Laaf, Luiz Antonio De Araujo Duvivier de Albuquerque Mello, Jucimar Coelho Moza
  • Patent number: 7393158
    Abstract: A centralizer system is provided for use in a marine riser system, the centralizer being preferably heat-shrink fitted to an upset portion of a keel joint, the upset portion having tapered sections on the upper and lower ends that gradually blend into the outer diameter of the pipe used as the keel joint, the centralizer preferably comprising axially extending annular grooves in surrounding relationship to the upset portion, the grooves serving to permit forces acting on the centralizer to be redirected or dissipated to thereby prevent excessive buildup on a selected region of the upset portion adjacent the radial grooves.
    Type: Grant
    Filed: October 20, 2003
    Date of Patent: July 1, 2008
    Assignee: RTI Energy Systems, Inc.
    Inventors: Christopher S. Caldwell, Carl F. G. Baxter, Robert E. Rose, Jr., Brent L. Dyer, Michael Beard
  • Patent number: 7261164
    Abstract: In aspects, embodiments of the present invention provide devices, systems and methods for managing cuttings formed during drilling of a subsea wellbore. By managing, it is meant the processing, storage, transportation and disposal of the cuttings. In an exemplary application, an offshore rig adapted to drill the wellbore uses one or more a selectively buoyant containers to transport the cuttings. The containers are positioned adjacent the offshore rig. In one arrangement, the containers are submerged to a selected depth below the water's surface. A transfer unit flows the cuttings from the offshore rig to the container via a conduit connected to the container.
    Type: Grant
    Filed: January 18, 2005
    Date of Patent: August 28, 2007
    Assignee: Baker Hughes Incorporated
    Inventor: Glynn Hollier
  • Patent number: 7210531
    Abstract: A protective element for a riser segment, including an elongated buffer body, at least one foot connected with the buffer body, the at least one foot being provided with an engagement part arranged to engage on a main pipe of a riser segment, the distance between the engagement part of the foot and the buffer body being such that in a mounted condition the part of the buffer body located farthest from the main pipe is located farther from the main pipe than auxiliary pipe elements arranged on the main pipe.
    Type: Grant
    Filed: November 13, 2001
    Date of Patent: May 1, 2007
    Assignee: Lankhorst Recycling B.V.
    Inventors: Arnoldus van Belkom, Martin Esselbrugge
  • Patent number: 7200540
    Abstract: Systems for implementing methods for generating platform location sets comprising selecting a set of platform locations; determining additional platform locations to add to the set of platform locations; validating the additional platform locations, and determining an optimum location for each platform location in the set of platform locations.
    Type: Grant
    Filed: July 18, 2003
    Date of Patent: April 3, 2007
    Assignee: Landmark Graphics Corporation
    Inventors: Richard Daniel Colvin, Glenn Robert McColpin
  • Patent number: 7185705
    Abstract: A subsea return fluid recovery system for recovering drilling fluid and cuttings (“return fluid”) from a subsea wellbore in one embodiment includes a hub at the opening of the subsea wellbore that directs fluid into a transport device. In one embodiment, the hub includes a stand pipe that forms a return fluid column, the hydrostatic pressure of which causes return fluid to flow into the transport device rather than up the stand pipe. One or more buoyant members attached to the transport device convey the transport device toward the surface. A preferred recovery method includes collecting return fluid at the seabed, passively transporting the collected fluid to the surface, and processing the collected fluid at a local (offshore) or land based treatment facility. The retrieval and processing of the return fluid is done outside the critical path of the drilling activities at an offshore platform.
    Type: Grant
    Filed: March 18, 2003
    Date of Patent: March 6, 2007
    Assignee: Baker Hughes Incorporated
    Inventor: Peter Fontana
  • Patent number: 6907326
    Abstract: A system and method autonomously clears obstacles and mines from an approach lane. A ship is distantly located from an approach lane spanning a surf zone and beach portion, and the ship has operator control station software in an onboard computer. At least one system delivery vehicle having a storage bay and propulsion system transits from the ship to the approach lane in response to instructions from the operator control station. A line charge is disposed in each bay and has one end coupled to the system delivery vehicle. A line charge delivery vehicle in the bay is connected to another end of the line charge to pull the line charge from the bay and emplace it in a straight path in the approach lane in response to instructions from the operator control station. Explosives in all line charges are detonated to clear the approach lane.
    Type: Grant
    Filed: May 28, 2002
    Date of Patent: June 14, 2005
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventor: Daniel P. Kucik
  • Patent number: 6889770
    Abstract: Method for protecting subsea installations against cooling which leads to hydrate formation, in particular during production halts. This is achieved by thermally isolating portions of the installation (1) against the surrounding water (2), and particularly by completely encompassing the subsea installation (1) by means of a cap (3) which seals against the surrounding water (2). The cap (3) comprises several elements of which each separately can be exposed to cooling and internal hydrate formation. The invention also comprises a thermally isolating apparatus, adapted for protecting subsea installations (1) against cooling, which involves a risk for hydrate formation. An apparatus (3, 9) for implementing the method comprises a relatively tight-fitting cap (3) which encompasses at least two of the elements to be protected from cooling.
    Type: Grant
    Filed: February 9, 2001
    Date of Patent: May 10, 2005
    Assignee: ABB Offshore Systems AS
    Inventors: Helge Andreas Qvam, Patrice Augilera, Steinar Hestetun
  • Patent number: 6796379
    Abstract: A method and an apparatus for storage and transport of drilling waste is provided. A number of storage containers (12) are anchored to the sea bed by means of anchors (15) and cables (13). The location of the containers (12) is marked with buoys (17). The containers (12) are of adjustable buoyancy, and are arranged to remain below the surface of the sea. Drilling waste is macerated on board a drilling vessel (18), and pumped via conduits (20) into the containers (12). Once the containers (12) are full, a tug (22) collects the containers (12) and transports them to an onshore waste recycling facility, while empty tanks are returned to the drilling vessel (18) to be reused. The containers (12) may be arranged to agitate stored waste, either by means of an internal agitator, or by virtue of fins or paddles mounted on the containers (12), to rotate the containers in response to sea currents.
    Type: Grant
    Filed: July 23, 2002
    Date of Patent: September 28, 2004
    Inventor: Andrew Martin
  • Publication number: 20040016548
    Abstract: A jumper for transferring fluids from an umbilical to a subsea tree assembly has a plurality of steel tubes. The steel tubes are bent so that the jumper is in a serpentine or w-shape while in a natural state. The steel allows resists damage to the jumper from the fluids and chemicals being transferred to the tree assembly. The w-shape of the jumper allows the jumper to be stretched or contracted so that the distance between the connectors on each end of the jumper can vary. The contracted width jumper is attached to a terminal plate located on the tree assembly as it is landed on a subsea wellhead. An ROV disconnects the jumper and connects the jumper to receptors on the tree assembly and the umbilical, while stretching the jumper to the necessary length to reach the receptors. The jumper can be disconnected from the tree assembly when maintenance is necessary without moving the umbilical.
    Type: Application
    Filed: July 29, 2002
    Publication date: January 29, 2004
    Inventors: Richard Kenneth Oakley Barratt, Robert Duane Fross
  • Patent number: 6622793
    Abstract: A method for carrying out operations on petroleum and gas fields is provided. The method involves using a platform which is located underwater when in working position at a depth where it is not subject to storm waves or under the lower surface of an ice field. The platform is made in the form of a structure which is water-tight and which includes an inner volume in which all the equipment, systems and structures are provided. The platform is directed from the surface using a surface complex which moves on the water or the ice field at the same speed as that of the current or the ice drift in the opposite direction.
    Type: Grant
    Filed: February 25, 2002
    Date of Patent: September 23, 2003
    Inventors: Igor Igorevich Rylov, Sergey Alexandrovich Vasiliev, Anna Igorevna Krasulina, Igor Igorevich Rylov
  • Patent number: 6564873
    Abstract: An apparatus for offshore production of hydrocarbon fluids is disclosed. The apparatus comprises a base and a buoyant structure secured to said base and connected or adapted to be connected to a subsea well or wells. The key characteristics of the apparatus are that: (A) the apparatus includes storage facility means for fluid(s) received from the subsea well or wells and/or for processed fluid(s) produced by the apparatus; (B) the buoyant structure is tethered to the base by a plurality of flexible tethers; and (C) the buoyant structure comprises (i) a sub-surface housing containing facilities for processing fluids received from the subsea well or wells via said storage facility in said base; and (ii) a column extending upwardly from the housing to a level above the sea surface. The invention also relates to the buoyant structure per se.
    Type: Grant
    Filed: November 29, 1999
    Date of Patent: May 20, 2003
    Inventors: Andrew Peter Tilbrook, David Bone, Paul Christopher Haywood, Nigel Barry Weir