Submerged, Buoyant Wellhead Or Riser Patents (Class 166/350)
  • Patent number: 8905142
    Abstract: Disclosed herein is a guide frame (10) for location at one or more points along the length of a riser tower structure (112,114). The riser tower structure is of a type that has an upper end supported at a depth below the sea surface and has a central core (200) with one or more conduits (220) arranged therearound extending from the seabed toward the surface. In use, the guide frame guides the conduit (s) relative to the central core, said guide frame (10) being attachable to said riser tower structure non-continuously (40,50), thereby not becoming an integral part of said riser tower structure. Also disclosed is a riser tower comprising such guide frames.
    Type: Grant
    Filed: September 21, 2009
    Date of Patent: December 9, 2014
    Assignee: Acergy France SA
    Inventor: Jean-Luc Bernard Legras
  • Patent number: 8899333
    Abstract: The invention discloses a subsea device comprising a can, a string of risers, a blowout preventer and a string of tie-back pipes. The blowout preventer is installed on the can. The top of risers is connected to a rig and its bottom is mounted on the blowout preventer. The upper of tie-back pipes is fixed to the can. The lower of tie-back pipes is mounted to a wellhead in the seabed by a subsea wellhead apparatus and connected to the casings for collecting oil/gas stored in formations by the subsea wellhead apparatus. A passage communicating the blowout preventer with tie-back pipe is jointed on the can. A pipeline, transporting oil/gas, mud and cuttings in drilling process, is divided into two sections, both tie-back pipes and casings, by the wellhead apparatus settled on seabed, thereby ensuring security of the rig in the drilling process and stronger operability of entire production system.
    Type: Grant
    Filed: June 10, 2008
    Date of Patent: December 2, 2014
    Assignees: China National Offshore Oil Corporation, China Oilfield Services Limited
    Inventors: Yongfeng Guo, Shaojun Ji, Changquan Tang
  • Patent number: 8893802
    Abstract: The disclosure relates to an assembly including a supporting buoy and an anchoring assembly (28) comprising a base (100) attached to the bed (12) of the expanse of water. The assembly comprises a flexible anchoring line (30) connecting the anchoring assembly (28) to the supporting buoy (26). The anchoring line (30) comprises a lower section (84) made of chain links (92). The anchoring assembly (28) comprises a device (110) for guiding the lower section (84). The lower section (84) is movably mounted in the guide device (110) relative to the base (100), between an extended configuration and a contracted configuration, and a locking member (114) which can be released from the anchor line (30) on the anchoring assembly (28).
    Type: Grant
    Filed: January 4, 2011
    Date of Patent: November 25, 2014
    Assignee: Technip France
    Inventors: Ange Luppi, Philippe Espinasse
  • Patent number: 8888412
    Abstract: A bottom-to-surface connection installation between a plurality of undersea pipes resting on the sea bottom and a floating support on the surface and anchored to the sea bottom, the floating support including a turret; and a plurality of flexible hoses extending from the turret to respective ones of a plurality of rigid pipes, the rigid pipes providing connections between the flexible hoses and respective ones of the plurality of undersea pipes resting on the sea bottom, wherein the installation includes a guide structure maintained in the subsurface between the turret and the top of the rigid pipes, the guide structure being suitable for guiding the flexible hoses, the guide structure having a plurality of first guide elements with respective ones of the plurality of flexible hoses passing therethrough in such a manner that the flexible hose has at least a bottom flexible hose portion in a dipping catenary configuration, and a second flexible hose portion extending entirely above the point of contact between
    Type: Grant
    Filed: May 18, 2011
    Date of Patent: November 18, 2014
    Assignee: Saipem S.A.
    Inventors: François-Régis Pionetti, Damien Szyszka, Rami Chkir
  • Patent number: 8881830
    Abstract: A riser pipe section (4) is disclose for offshore well drilling operations comprising a main tube element (6) having as an extension a male connector element (10) and a female connector element (9) comprising a first series of tenons. At least one auxiliary tube element (7) is secured to the male connector element (10) and to the female connector element (9) so that the main tube element (6) and the auxiliary tube element (7) jointly transmit tensile stresses between the male connector element (10) and the female connector element (9). A locking ring is mounted on the male connector element and the ring comprises a second series of tenons.
    Type: Grant
    Filed: December 1, 2008
    Date of Patent: November 11, 2014
    Assignee: IFP Energies Nouvelles
    Inventors: Gérard Papon, Emmanuel Persent
  • Publication number: 20140326461
    Abstract: A buoyancy compensating element for connection to a flexible pipe and method of producing a buoyancy compensating element are disclosed. The buoyancy compensating element includes a first body portion and a further body portion, wherein the first and further body portion are configured to be connectable to each other and in use to encompass a portion of flexible pipe.
    Type: Application
    Filed: October 19, 2012
    Publication date: November 6, 2014
    Applicant: WELLSTREAM INTERNATIONAL LIMITED
    Inventors: Zhimin Tan, Yucheng Hou, Christopher Bush, John Rosche, Tricia Hill
  • Publication number: 20140326460
    Abstract: A buoyancy compensating element for connection to a flexible pipe and method of producing a buoyancy compensating element are disclosed for increasing or decreasing buoyancy of the portion of flexible pipe. The buoyancy compensating element includes a body portion; and a channel extending through the body portion for receiving a portion of flexible pipe, wherein the body portion and channel are configured such that when a portion of flexible pipe is received in the channel, the portion of pipe has increasing ability to flex towards an end of the channel.
    Type: Application
    Filed: October 19, 2012
    Publication date: November 6, 2014
    Applicant: WELLSTREAM INTERNATIONAL LIMITED
    Inventors: Zhimin Tan, George Karabelas
  • Patent number: 8875805
    Abstract: A mobile drilling system comprising a top member with a drilling rig positioned thereon. The top member is removably engaged with a foundation member. The foundation member comprises a tower. The top member is moveable and adapted to be elevated out of the water for placement on top of the tower. The tower is preferably of concrete and extends out of the water and above any ice. A method is also described by which the top member is elevated out of the water either by jacking down legs or lifting by interaction with the tower.
    Type: Grant
    Filed: March 27, 2012
    Date of Patent: November 4, 2014
    Assignee: KV/Erner Concrete Solutions AS
    Inventors: Jan-Diederik Advocaat, Jon Hermstad, Dag Nikolai Jenssen
  • Patent number: 8869900
    Abstract: In one embodiment, the present invention relates to a riser apparatus for use in offshore drilling for oil or other fossil fuels, the riser apparatus comprising: a plurality of riser sections coupled serially end-to-end, wherein each of the riser sections comprises: a tube having a first end and a second end; a first flanged that is mechanically joined to the first end of the tube; a second flanged that is mechanically joined to the second end of the tube; wherein the tube is constructed of an aluminum alloy; and wherein the flanges are constructed of the aluminum alloy; and wherein the riser apparatus has a length of approximately 1,500 meters or greater.
    Type: Grant
    Filed: April 28, 2008
    Date of Patent: October 28, 2014
    Assignee: Alcoa Inc.
    Inventors: Ralph Sawtell, Matthew P. Kiley, Harry R. Zonker, James T. Burg, John W. Cobes
  • Patent number: 8863847
    Abstract: An adjustable riser suspension system for suspending a riser under tension including a riser hanger, a mating sleeve rotationally coupled to the riser hanger, a ratchet-latch sleeve located inside the mating sleeve with an external profile configured to engage an internal profile of the mating sleeve and an internal profile configured to engage an externally threaded face of the riser. The riser hanger and mating sleeve are configured to move downward relative to the riser such that the mating sleeve fits over at least a portion of the riser, causing the ratchet-latch device to ratchet over the external threads of the riser. The mating sleeve is configured to rotate relative to the riser, causing the internal and external profiles of ratchet-latch device to lock the riser and the mating sleeve to prevent movement of the riser relative to the mating sleeve.
    Type: Grant
    Filed: May 6, 2011
    Date of Patent: October 21, 2014
    Assignee: Cameron International Corporation
    Inventors: Delbert Edwin Vanderford, Max Van Adrichem
  • Publication number: 20140305655
    Abstract: A top-tensioned riser system comprises a substantially vertical riser extending upward from the seafloor; a conductor surrounding an upper portion of the riser in spaced-apart relation; a coaxial keel guide surrounding a lower portion of the conductor; a tensioner attached to the conductor and the riser; a keel guide support structure attached to the keel guide and connected to the keel of a dry-tree, semi-submersible vessel; and, a keel joint centralizer attached to the riser proximate the keel guide and sized to prevent radial movement of the riser relative to the conductor. Side loads on the riser (such as those arising from displacement of the vessel from its nominal position or currents acting on the riser) are reacted from the riser to the conductor via the keel joint centralizer and thence to the keel of the vessel via the keel guide.
    Type: Application
    Filed: April 14, 2014
    Publication date: October 16, 2014
    Applicant: Seahorse Equipment Corp.
    Inventors: Jeffrey Douglas Otten, Peimin Cao, Thomas Prichard
  • Patent number: 8844632
    Abstract: An inertia transition terminal pipe element having a main rigid pipe element including at one of its ends an inertia transition piece that is constituted by at least one and preferably a plurality “n” of coaxial reinforcing pipe elements placed coaxially around the main pipe element, each reinforcing pipe element presenting an inside diameter greater than the outside diameter of the main pipe element. The various main and reinforcing pipe elements each being positioned with one end situated at the same level along the axis of symmetry of the pipe elements, and each reinforcing pipe element presenting a length that is less than the height of the main pipe element. The annular gap between the various pipe elements being filled with a solid filler material. A rigid undersea pipe is also disclosed including at at least one of its ends, an inertia transition pipe element.
    Type: Grant
    Filed: April 14, 2009
    Date of Patent: September 30, 2014
    Assignee: Saipem S.A.
    Inventor: François-Régis Pionetti
  • Patent number: 8833460
    Abstract: A suspension device (14) for suspending an oil pipe on an underwater float (12) between a seabed and a sea surface and a method for installing such a device. The device (14) includes two hitching members (16,18) that respectively comprise a connection end (22, 22) and an attachment end (24, 24). The hitching members are respectively attached to the float (12) and to the coupling end (10) of the pipe by the fastener thereof while the connection ends (24, 24) are connected by connectors (20, 20). The connection end (22, 22) of each hitching member (16, 18) comprises two hooks (44, 46, 44, 46). The connectors include two independent links (20) for parallel adjustment so as to connect, two by two, the hooks (44, 46, 44?, 46?) of the two hitching members (16, 18).
    Type: Grant
    Filed: July 8, 2010
    Date of Patent: September 16, 2014
    Assignee: Technip France
    Inventors: Ange Luppi, Anthony Berger
  • Patent number: 8833458
    Abstract: The present disclosure relates to an installation (10) that includes a floating top structure (20) and a fully submerged bottom structure (22). The top structure is mobile between a production position and an evacuation position. The installation (10) retains the top structure (20) in its production position which includes at least one rigid rod (90) carried by the top structure (20), at least one rod abutment (92) carried by the rigid rod (90) in the vicinity of its lower end and at least one complementary abutment (94) secured to a base (60) of the bottom structure (22). Each rod abutment (92) and each complementary abutment (94) are mobile in rotation relative to one another between an engaged configuration in which urging of the rigid rod (90) towards its top position (20) retains the top structure in its production position, and a disengaged configuration releasing the top structure (20) from the bottom structure (22).
    Type: Grant
    Filed: November 9, 2009
    Date of Patent: September 16, 2014
    Assignee: Technip France
    Inventor: Sami Malek
  • Patent number: 8820410
    Abstract: A modular control system consisting of multiple, remotely retrievable functional modules for controlling a blowout preventer stack. The various functional modules can be located on the lower marine riser package and blowout preventer stack positioned near the equipment with which they are associated, wherein this distribution of modules nearly eliminates the complex interface connection between the lower marine riser package and blowout preventer stack. Each of the functional modules is capable of being installed, retrieved or replaced with a single remotely operated vehicle (ROV) deployment from a vessel. The functional modules can be used to operate as a complete control system for a blowout preventer stack or can be used selectively individually or in various combinations to accommodate multiple control applications or upgrades of other control systems.
    Type: Grant
    Filed: August 11, 2008
    Date of Patent: September 2, 2014
    Assignee: DTC International, Inc.
    Inventors: William C. Parks, Dana C. Beebe, Chester W. Kronke
  • Patent number: 8820412
    Abstract: Disclosed are methods, systems and apparatus for circulating fluid within the annulus of a flexible pipe used in a riser in an offshore hydrocarbon production facility. Fluid, such corrosion inhibitors, can be introduced into the annulus by pumping fluid from a storage tank located on a platform or vessel into tubes within the annulus. Use of the system to flow the fluid through the annulus can prevent or reduce corrosion of the steel members within the annulus and increase the fatigue life of the riser.
    Type: Grant
    Filed: September 16, 2011
    Date of Patent: September 2, 2014
    Assignee: Chevron U.S.A. Inc.
    Inventors: Antonio C. F. Critsinelis, Christopher A. Kassner, Farzan Parsinejad, Ahmed Omar
  • Patent number: 8813851
    Abstract: A method is described for connecting a flexible upper riser part to a lower riser part via an upper riser assembly supporting a lower riser termination. The method includes securing a cable linkage to a riser connector at the lower end of the flexible upper riser part. The method includes operating a winching means on the upper riser assembly to wind in the cable linkage and draw the riser connector into a docking position on the upper riser assembly. Then coupling the riser connector to the lower riser termination occurs. A corresponding method of disconnecting the flexible riser part is also described, as well as a method of mounting the winching mechanism on a submerged landing platform.
    Type: Grant
    Filed: March 10, 2010
    Date of Patent: August 26, 2014
    Assignee: Subsea 7 Limited
    Inventors: Mark Lawrence Varley, Wilfred Johnson Emmanuel Cox
  • Patent number: 8813852
    Abstract: A subsea wellhead assembly includes a production casing hanger defining a series of passageways from an annulus between a production casing string and an outer casing to a region that can communicate, for example, by way of an isolation sleeve, with a production tree. The passageways extend to the interior of the casing hanger. A positionally adjustable sleeve fits within the casing hanger and carries exterior seals that are disposed so that for a first position of the adjustable sleeve within the casing hanger, fluid passage through the series of passageways is blocked, and for a second position of the sleeve within the casing hanger, the fluid passage is allowed. The adjustable sleeve can be operated by a simple tool through the production tree.
    Type: Grant
    Filed: July 15, 2009
    Date of Patent: August 26, 2014
    Assignee: Aker Subsea Limited
    Inventor: George S. Thomson
  • Patent number: 8807226
    Abstract: Subsea wellhead assembly with an inner bore for conduction of produced hydrocarbons, equipped with a cooling means for cooling a section of the wellhead assembly exposed to heating by said hydrocarbons.
    Type: Grant
    Filed: April 14, 2010
    Date of Patent: August 19, 2014
    Assignee: Aker Subsea AS
    Inventor: Øystein Møgedal
  • Patent number: 8800665
    Abstract: A structural health monitoring system for a marine composite riser string is provided. Each riser pipe section includes a cylindrical form having an axis and also a carbon epoxy matrix. A sensor is associated with (e.g., embedded in) and substantially circumscribes the riser pipe section. The sensor includes a PolyVinyliDene Fluoride laminate and electrodes (e.g., conductive silver ink coating) so that the sensor generates electricity at the electrodes responsive to mechanical stresses and strains of the riser section, including vibrations. The system can also include a data acquisition system and digital signal analyzer to analyze signals responsive to the generated electricity at the electrodes of sensors and to provide health monitoring and damage detection for the marine riser pipe string, including impact damage and fatigue crack initiation.
    Type: Grant
    Filed: August 5, 2010
    Date of Patent: August 12, 2014
    Assignee: Vetco Gray Inc.
    Inventor: Ashutosh Chandrashekhar Phadke
  • Patent number: 8800664
    Abstract: A buoyancy module assembly reduces the effective weight of a sub-sea conduit used in a deep-water wellbore drilling installation. The assembly includes a buoyant sleeve positioned around the conduit between upper and lower stop collar assemblies. The sleeve contains buoyant material forming most of its cross-section, with cross sectional segments thereof each encapsulated in a non-porous resinous material that forms an outer jacket around each segment. In one embodiment, a non-rotating generally circular inside diameter of the sleeve is formed by the thin layer of jacket material bonded directly to an interior reinforcing cage. A narrow gap is formed between the ID of the non-rotating sleeve and the OD of the conduit. The collar assemblies comprise an inner collar rigidly affixed to the conduit and contained within a larger diameter outer shell adapted for rotation relative to the fixed inner collar.
    Type: Grant
    Filed: July 27, 2010
    Date of Patent: August 12, 2014
    Assignee: WWT North America Holdings, Inc.
    Inventors: Eric Gollmyer, Norman Bruce Moore, Sarah Mitchell, Rudolph Ernest Krueger, IV
  • Publication number: 20140216751
    Abstract: An apparatus comprises a telescoping marine riser action and one of a rotating control device and an annular blow out preventer. The telescoping marine riser section comprises an inner barrel and an outer barrel.
    Type: Application
    Filed: February 6, 2014
    Publication date: August 7, 2014
    Applicant: M-I L.L.C.
    Inventor: Bastiaan Liezenberg
  • Patent number: 8789606
    Abstract: A system for controlling functions of a subsea structure, such as a blowout preventer, has a plurality of actuators respectively affixed to a plurality of controls of the subsea structure, and an acoustic signal generator positioned remotely from the plurality of actuators. Each of the plurality of actuators has a transponder connected thereto. The acoustic signal generator produces an acoustic signal so as to actuate at least one of the plurality of actuators. Each of the actuators is an electrically-powered torque wrench having a battery affixed there to so as to supply power thereto. An induction generator can transmit an electromagnetic wave along the tubing associated with the blowout preventer so as to recharge the batteries of the torque wrenches.
    Type: Grant
    Filed: September 9, 2011
    Date of Patent: July 29, 2014
    Assignee: Trendsetter Engineering, Inc.
    Inventor: Mario R. Lugo
  • Patent number: 8783359
    Abstract: An apparatus, system and method is disclosed for processing geological solids or wellbore cuttings generated by excavation or drilling under a body of water. An apparatus for processing solids in association with a riser may employ a solids processing apparatus having a central cavity that is substantially free of mechanical obstructions. The central cavity may be positioned in-line with the riser. The apparatus may be adapted for receiving solids within the central cavity and reducing the particle size of the solids by action of a cutter assembly which is positioned outside of the central cavity. The cut and processed solids may be pumped to the surface of the water.
    Type: Grant
    Filed: October 5, 2010
    Date of Patent: July 22, 2014
    Assignee: Chevron U.S.A. Inc.
    Inventor: Larry D. Reed
  • Patent number: 8776894
    Abstract: An offshore universal riser system may include a valve module which selectively permits and prevents fluid flow through a flow passage extending longitudinally through a riser string. An anchoring device may releasably secure the valve module in the passage. A method of constructing a riser system may include the steps of installing the valve module in the passage, and installing at least one annular seal module in the passage. The annular seal module may prevent fluid flow through an annular space between the riser string and a tubular string positioned in the passage. Drilling methods may include injecting relatively low density fluid compositions into the annular space, and selectively varying a restriction to flow through a subsea choke in a drilling fluid return line. The riser string, including housings for the various modules and external control systems, may be dimensioned for installation through a rotary table.
    Type: Grant
    Filed: July 6, 2012
    Date of Patent: July 15, 2014
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Charles R. Orbell, Christian Leuchtenberg, Craig W. Godfrey
  • Publication number: 20140174753
    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: Application
    Filed: March 23, 2012
    Publication date: June 26, 2014
    Applicant: Moss Maritime AS
    Inventors: Per Herbert Kristensen, Lars Martin Sørhaug, Knut A. Sveen, Morten Bøhlerengen
  • Publication number: 20140166296
    Abstract: A multi-tiered self-standing riser system includes one or more intermediate buoyancy chambers configured to provide an upward lifting force on strings of associated riser assemblies. The intermediate chambers have either an open-bottomed or closed container design. The chambers can further include an auxiliary buoyant material designed to either mix with or contain pressurized fluids injected into the chambers. The self-standing riser system further includes a lower riser assembly affixed to a primary well-drilling fixture. The system also includes an upper riser assembly and one or more additional buoyancy chambers disposed in either direct or indirect communication with one another, as well as with drilling, production and exploration equipment as required by associated operations.
    Type: Application
    Filed: July 10, 2013
    Publication date: June 19, 2014
    Inventor: Keith K. Millheim
  • Patent number: 8746349
    Abstract: A drilling riser adapter variably connects and releases a riser from a subsea wellhead assembly. The drilling riser adapter has a hydraulically actuated engagement assembly for selectively engaging and disengaging a lower end of the marine riser. The drilling riser adapter also includes a control panel communicatively coupled to the engagement assembly for actuating the engagement assembly to engage and disengage the lower end of the marine riser. The drilling riser adapter also includes a hydraulic fluid pressure receptacle on the control panel for engagement by a remotely operated vehicle to supply hydraulic fluid pressure to the engagement assembly. The drilling riser adapter may be actuated subsea to release a first riser from the wellhead assembly, and connect to a second riser.
    Type: Grant
    Filed: March 1, 2011
    Date of Patent: June 10, 2014
    Assignee: Vetco Gray Inc.
    Inventors: Eric Dale Larson, Robert Allen Blue
  • Patent number: 8746351
    Abstract: Systems and methods for stabilizing a riser or similar object against motion can include engaging two or more cylinder apparatus to the object. Communication of fluid between cylinder apparatus, responsive to a force on the object, can limit movement of the object, such as through extension or retraction of pistons within the cylinders. The cylinder apparatus can include internal channels that can accommodate coiled tubing, slickline, wireline, and similar conduits or devices, enabling operations to be performed through the cylinders, independent of their position.
    Type: Grant
    Filed: June 23, 2011
    Date of Patent: June 10, 2014
    Assignee: Wright's Well Control Services, LLC
    Inventor: David Wright
  • Patent number: 8734055
    Abstract: This method comprises connecting a downstream point (40) of a pipe (24) to a buoy (26) and completely submerging the buoy (26). It comprises deploying in the body of water (12) an intermediate section (30) of the pipe (24) from the downstream point (40) to at least as far as an upstream point (38), anchoring the upstream point (38), and tensioning the intermediate section (30) to keep it vertical. The height of the buoy (26) is less than 1.5 times its greatest transverse dimension. The method comprises moving the buoy (26) between a remote position and an installed position in line with an anchoring region, keeping the buoy (26) partly submerged on the surface (16) of the body of water.
    Type: Grant
    Filed: November 3, 2009
    Date of Patent: May 27, 2014
    Assignee: Technip France
    Inventors: Jeroen Remery, Romain Vivet, Christophe Defreslon, Ange Luppi
  • Patent number: 8733446
    Abstract: The invention relates to a riser pipe installation that comprises a flexible duct of the non-bound type, the duct being vertically arranged between a mechanical connection with a submerged buoy at the stub on the one hand, and a mechanical connection with the seabed at the bottom on the other hand, wherein fluid connections are provided at the stub and at the bottom for connecting the riser pipe with surface equipment on the one hand and bottom equipment on the other hand; the bottom of the pipe is located at a depth of at least 1000 m where it is submitted to a computable maximum reverse bottom effect F, while the buoy is oversized in order to generate at the bottom of the riser pipe a reaction tension T higher than at least 50% or even 100% of the computable maximum reverse bottom effect F applied at the bottom of the pipe.
    Type: Grant
    Filed: January 23, 2008
    Date of Patent: May 27, 2014
    Assignee: Technip France
    Inventors: Philippe Espinasse, Alain Coutarel, Isabel Teresa Waclawek
  • Patent number: 8727014
    Abstract: A tensioning apparatus for applying a substantially constant tension to a workover riser (12) includes a first portion (40) adapted to be coupled to a workover riser, a second portion (44) adapted to be coupled to a marine riser (14) and tensioning means (46) for providing relative movement between the first portion and the second portion to, in use, tension, the workover riser.
    Type: Grant
    Filed: April 26, 2012
    Date of Patent: May 20, 2014
    Assignee: Enovate Systems Limited
    Inventor: Jeffrey Edwards
  • Patent number: 8727013
    Abstract: A subsea control module for subsea well equipment has an actuator having a rod with a remote operated vehicle (ROV) interface on one end and a latch on an opposite end that latches to a subsea receptacle. Segments are releasably mounted around and to the actuator. Each of the segments has a sealed housing containing at least one internal control component. Couplings depend from the housing for engaging mating couplings in the receptacle. The housing has two radial walls, each extending along a radial line from an axis of the rod. An outer wall joins outer ends of the radial walls, the outer wall being a portion of a cylinder. An inner wall joins inner edges of the radial walls. The radial walls of adjacent ones of the segments abut each other.
    Type: Grant
    Filed: June 4, 2010
    Date of Patent: May 20, 2014
    Assignee: DTC International, Inc.
    Inventors: Margaret M. Buckley, David C. Baskett
  • Patent number: 8720583
    Abstract: A method and apparatus for determining and reacting to an upper packer failure in a riser slip joint. An upper packer failure is determined by comparing pressures at two points in the upper packer pressure circuit using a differential pressure valve. In the event of a failure of the upper packer, a secondary pressure source is used to energize a lower packer in the riser slip joint.
    Type: Grant
    Filed: December 22, 2008
    Date of Patent: May 13, 2014
    Assignee: Transocean Sedco Forex Ventures Limited
    Inventor: Bradley Ray Rodger
  • Patent number: 8720586
    Abstract: A casing hanger seal assembly is lowered into a pocket between a casing hanger and a wellhead housing while in a run-in position. The seal assembly has a metal-to-metal upper seal ring and an elastomeric and metal lower seal ring carried by and below the upper seal ring. The upper and lower seal rings are movable from a run-in position to a set position sealing between the sidewalls of the casing hanger and the wellhead housing by applying a downward force. The downward force required to move the lower seal ring to the set position is less than the downward force required to move the upper seal ring to the set position. A downward force applied to the upper seal ring after the lower seal ring has landed in the pocket transfers to the lower seal ring to cause the lower seal ring to move to the set position before the upper seal ring moves to the set position.
    Type: Grant
    Filed: June 30, 2011
    Date of Patent: May 13, 2014
    Assignee: Vetco Gray Inc.
    Inventor: Khanh Anh Duong
  • Patent number: 8708052
    Abstract: Systems, computer readable medium, program code, and methods for monitoring and managing a plurality of marine riser assets are provided. An example of a system includes a computer and a computer readable medium containing a program code of instructions that when executed by the computer, cause the computer to perform operations for tracking the subsea deployment and retrieval of each of a plurality of riser joints. The operations can include receiving riser joint identification data from a riser joint identification indicator connected to the respective riser joint during the operational deployment thereof, and identifying the respective riser joint being operationally deployed to thereby track the deployment thereof. The operations can also include receiving riser joint identification data from the riser identification indicator of the respective riser joint during retrieval thereof, and identifying the respective one or more riser joints being retrieved to thereby track the retrieval thereof.
    Type: Grant
    Filed: December 6, 2012
    Date of Patent: April 29, 2014
    Assignee: Vetco Gray Inc.
    Inventor: Amin Radi
  • Patent number: 8672039
    Abstract: An apparatus for performing well intervention work using coiled tubing. The apparatus includes a structural frame. The upper portion of the frame include two winches for suspending well interventions tools including a coiled tubing injector head. The winches may be selective reciprocated by a hydraulic cylinder to either bring the first or second winch into operative alignment into or out of alignment with a subsea wellhead.
    Type: Grant
    Filed: February 22, 2011
    Date of Patent: March 18, 2014
    Assignee: Devin International, Inc.
    Inventors: Joseph Hayden Miller, III, Joseph Hayden Miller, Jr.
  • Patent number: 8657012
    Abstract: A riser for use in subsea operations that is parked subsea deployed as needed onto wellheads disposed proximate where the riser is parked. A base anchored into the seafloor provides a pedestal for parking the riser. The riser emits a beacon signal so it can be located when needed. When parked, the riser can be kept in a vertical orientation by a buoyancy module mounted on an upper portion of the riser. A workboat, or other vessel, attaches to the parked riser and positions it onto a designated wellhead. An extension connects the riser to platform or other vessel above the sea surface.
    Type: Grant
    Filed: November 1, 2010
    Date of Patent: February 25, 2014
    Assignee: Vetco Gray Inc.
    Inventors: Stephen P. Fenton, Ian Calder, Stewart Christie, Robert Lee
  • Publication number: 20140041878
    Abstract: A hybrid riser system comprises a lower riser section secured between a lower subsea anchor and an upper buoyant structure, and an upper riser section extending between the lower riser section and a surface or near surface vessel. The lower riser section comprises an elongate support and one or more composite fluid conduits secured to and extending adjacent the elongate support. The composite fluid conduits comprise a composite material formed of at least a matrix and one or more reinforcing elements embedded within the matrix.
    Type: Application
    Filed: October 18, 2013
    Publication date: February 13, 2014
    Applicant: Magma Global Limited
    Inventor: Stephen Hatton
  • Publication number: 20140041879
    Abstract: A riser system (202) comprises a riser (204) to be secured between a floating body (206) and a subsea location (209). The riser comprises a composite material formed of at least a matrix and one or more reinforcing elements embedded within the matrix. In use, the riser (204) comprises an upper portion (214) extending from the floating body (206) and having a region arranged to be in tension, a lower portion (216) extending from the subsea location (209) and having a region arranged to be in tension, and an intermediate portion (218) located between the upper and lower portions (214, 216) and having a region arranged to be in compression. A flow-line jumper (302, 402) configured to be secured between two subsea locations, a flow-line jumper arrangement comprising a flow-line jumper (302, 402) and a method of forming a flow-line jumper 302, 402 are also disclosed.
    Type: Application
    Filed: October 18, 2013
    Publication date: February 13, 2014
    Applicant: Magma Global Limited
    Inventors: Martin Peter William Jones, Richard Damon Goodman Roberts, Charles Alexander Tavner
  • Patent number: 8647019
    Abstract: An installation of bottom-to-surface connections having a plurality of bottom-to-surface connections arranged in a fan from a common floating support. The installation having a first number k of first bottom-to-surface connections, with each first number of connections having a first riser connected to a first undersea pipe tensioned in substantially vertical manner by a first float, and a diving first flexible connection pipe connecting the floating support and first riser. The installation further having a second number m of second bottom-to-surface connection, with each second number of connections having a second rigid pipe connected to a second undersea pipe and tensioned by a second buoyancy element, and a second flexible connection pipe providing the connection between the floating support and the second rigid pipe.
    Type: Grant
    Filed: October 15, 2010
    Date of Patent: February 11, 2014
    Assignee: SAIPEM S.A.
    Inventors: Gianluca Sintini, Gianmarco Rota, Floriano Casola, Giulio Fatica
  • Patent number: 8616806
    Abstract: A riser support system for use in a body of water comprises a buoyant and ballastable support structure and a plurality of substantially vertical and rigid risers each of which is attached to the inside of the support structure at a location below the center of buoyancy of the support structure and below the surface of the body of water. Usually, each riser passes through the inside of a single tube in the support structure. Typically, the riser support system is used to support a plurality of risers and their surface wellheads inside the hull of an offshore platform, usually in such a manner that the axial movement of the risers and support structure is independent of the axial movement of the hull.
    Type: Grant
    Filed: September 7, 2011
    Date of Patent: December 31, 2013
    Assignee: Union Oil Company of California
    Inventor: Stephen B. Wetch
  • Publication number: 20130292129
    Abstract: A riser assembly (400) and method for transporting fluids from a sub-sea location (404) are disclosed. The riser (406) assembly includes a riser comprising at least one segment of flexible pipe; at least one buoyancy element (408) for providing a positive buoyancy to a portion of the riser; and a tethering element (410) for tethering the buoyancy element to a fixed structure (412) and to resist the positive buoyancy of the buoyancy element.
    Type: Application
    Filed: October 25, 2011
    Publication date: November 7, 2013
    Applicant: WELLSTREAM INTERNATIONAL LIMITED
    Inventors: Zhimin Tan, Yanqiu Zhang, Lun Qiu
  • Patent number: 8573307
    Abstract: A high pressure sleeve for a dual bore high pressure riser is provided. The high pressure sleeve is arranged for forming a connection between either the annulus bore and the high pressure sleeve, or for forming a connection between the high pressure sleeve and the production bore. The choice of connection is made by rotation of the sleeve.
    Type: Grant
    Filed: April 21, 2009
    Date of Patent: November 5, 2013
    Assignee: Ocean Riser Systems AS
    Inventor: Harald Moksvold
  • Publication number: 20130284448
    Abstract: Lifting devices for use with drilling risers, where the lifting devices have a plurality of segments, some of which are hinged to facilitate handling and provide multiple shear points between the hinged segments. One embodiment comprises a lifting device for a drilling riser, where the device includes a collar and a lifting lug. The collar has a cylindrical ring with one or more annular ribs connected to corresponding circular edges of the ring. The lifting lug is connected to the collar and the ribs. The collar has a plurality of segments, and at least a first one of the segments is pivotally connected to another one of the segments by a hinge. Each rib may taper smoothly from a smaller thickness at a top edge of the rib to a greater thickness at a base of the rib.
    Type: Application
    Filed: April 24, 2013
    Publication date: October 31, 2013
    Applicant: Taper-Lok Corporation
    Inventors: Justin M. Fraczek, Erik M. Howard, Randy D. Arthion, I
  • Publication number: 20130277061
    Abstract: The present disclosure relates to a tower comprising a fluid transporting pipe (24) and an element (29) for anchoring a transporting pipe (24) to the bottom (14) of the expanse of water (12), which element is connected to an upstream point (38) of an intermediate section (30) of the pipe. The tower comprises a buoy (26) connected to a downstream point (40) of the intermediate section in order to keep the intermediate section (40) in a substantially vertical configuration. The buoy (26) has a height less than 1.5 times its maximum transverse direction and delimits a first through-passage (78A) in which the intermediate section (30) is fitted. The buoy (26) delimits a second through-passage (78B), separate from the first through-passage (78A), the second through-passage (78B) accepting the upper section (34). The tower (20) comprises a coupling section (32) that couples the connecting upper section (34) to the intermediate section (30).
    Type: Application
    Filed: November 17, 2011
    Publication date: October 24, 2013
    Inventors: Ange Luppi, Gilles Cousin, Romain Vivet, René Maloberti
  • Patent number: 8555982
    Abstract: A method includes the positioning of a rising column (22) in a vertical configuration and the total immersion of a buoy for retaining the rising column (22). The method includes the insertion of a male connecting member (62) borne by the buoy in a female connecting member (64) borne by the rising column (22) and the immobilization of the male connecting member (62) in a receiving passage (92) defined by the female connecting member (64). The female connecting member (64) includes at least one surface (98) for guiding the male connecting member (62) towards the receiving passage (92). The insertion step including the guiding of the male connecting member (62) towards the receiving passage (92) by contact with a guiding surface (98) of the female connecting member (64) which has a vertical section diverging away from the receiving passage (92) towards the male connecting member (62).
    Type: Grant
    Filed: June 25, 2009
    Date of Patent: October 15, 2013
    Assignee: Technip France
    Inventor: Ange Luppi
  • Patent number: 8540030
    Abstract: Methods, systems, and program product for monitoring and managing a plurality of marine riser assets are provided. An example of a method includes tracking the subsea deployment and retrieval of each of a plurality of riser joints. This can include deploying the plurality of riser joints from a vessel to form an operationally deployed marine riser string, reading riser joint identification data from a riser joint identification indicator connected to the respective riser joint during the operational deployment thereof, and identifying the respective riser joint being operationally deployed to thereby track the deployment thereof. The method can also include retrieving one or more of the operationally deployed riser joints, reading riser joint identification data from the riser identification indicator of the respective riser joint during retrieval thereof, identifying the respective one or more riser joints being retrieved to thereby track the retrieval thereof.
    Type: Grant
    Filed: November 18, 2011
    Date of Patent: September 24, 2013
    Assignee: Vetco Gray Inc.
    Inventor: Amin Radi
  • Patent number: 8540028
    Abstract: An autonomous junk collecting sleeve for a riser is provided. The sleeve is constructed and arranged to be independently lowered and seated above a subsea tree section and, subsequently, raised and removed independent of the work string. The autonomous junk collecting sleeve includes a first cylindrical structure, a second cylindrical structure concentric to the first cylindrical structure and which are joined together in spatial relation at a bottom end to form an interior J-channel basket. The J-channel basket is operable to collect debris traveling up through the bottom end and over of the second cylindrical structure for deposit therein.
    Type: Grant
    Filed: April 16, 2012
    Date of Patent: September 24, 2013
    Assignee: Wellbore Specialties, LLC
    Inventor: Dennis J. Penisson
  • Patent number: 8511387
    Abstract: A cap is lowered onto and secured to a subsea member with an external flange, effecting a seal between the external flange and cap. The cap includes a tubular outer body defining a cavity, and a tubular inner body defining a bore, wherein the lower end of the inner body resides within the cavity. The cap also includes a lower engaging member coupled to the outer body that is radially movable between an inward state and an outward state and configured to alternately engage and disengage at least one of a backside of the external flange. Finally, the cap includes an upper engaging member coupled to the outer body and being radially movable independently of the lower engaging member between an inward state and an outward state and configured to engage and disengage the inner body.
    Type: Grant
    Filed: December 21, 2010
    Date of Patent: August 20, 2013
    Assignee: BP Corporation North America Inc.
    Inventors: Thomas A Fraser, John G Landthrip, Eric D Larson, Sara N Riddle, Dale Norman, Jamie C Gamble, Satish N Ramasheshaiah, James R Reams