With Provision For Disassembly Patents (Class 166/365)
  • Patent number: 9267336
    Abstract: The method according to the invention comprises providing a flexible line (18) and a bend limiter axially immobilized around the flexible line (18) by a releasable immobilizing mechanism (46). It includes partially inserting the flexible line (18) through a hollow rigid member (40), immobilizing the bend limiter on the hollow rigid member (40), and deactivating the releasable immobilizing mechanism (46). The releasable immobilizing mechanism (46) is deactivated independently of the movement of the flexible line (18) relative to the bend limiter.
    Type: Grant
    Filed: September 5, 2012
    Date of Patent: February 23, 2016
    Assignee: TECHNIP FRANCE
    Inventors: Sylvain Routeau, Frédérick Vergne
  • Patent number: 8991503
    Abstract: A subsea wellhead assembly is provided. The subsea wellhead assembly comprises a tubing head structure with a tree above the tubing head structure, and a recoverable module attached to the tubing head structure below said tree, the recoverable module comprising at least one valve and at least one sensor.
    Type: Grant
    Filed: May 11, 2012
    Date of Patent: March 31, 2015
    Assignee: Vetco Gray Inc.
    Inventor: Stephen Paul Fenton
  • Patent number: 8960299
    Abstract: A device including a fluid transport pipe (24), a superstructure (16), and a floating barge (18) rotatably mounted on the superstructure (16) about an axis of rotation (A-A?). The pipe (24) includes a hose section (150) wound around the axis of rotation (A-A?) supported by an intermediate structure (20) mounted between the superstructure (16) and the barge (18), between a configuration rotatably driven with the barge (18) about the axis of rotation and a configuration rotatably retained about the axis of rotation (A-A?) by the superstructure (16). During a step of connecting the pipe (24), the intermediate structure (20) is placed in either the driven configuration or the retained configuration, a step of disconnecting the pipe (24) including switching the intermediate structure (20) to the other one of the driven configuration and the retained configuration.
    Type: Grant
    Filed: December 29, 2009
    Date of Patent: February 24, 2015
    Assignee: Technip France
    Inventor: Philippe Espinasse
  • Patent number: 8950474
    Abstract: A cap having a stinger adapted to be inserted into a bore of a subsea well element. The stinger includes locking means for locking to a profile in said bore, which locking means include a plurality of locking dogs. The locking dogs exhibit a large inclination face and a small inclination face, and are adapted to be actuated in a radial direction by an actuation sleeve. The small inclination face is divided by a slot, in which slot the large inclination face is arranged. A cam is arranged on the actuation sleeve and is adapted to extend into said slot. Alternatively, the small inclination face is divided by a cam arranged on the locking dog, on which the large inclination face is arranged, which cam is adapted to extend into a slot in the actuation sleeve.
    Type: Grant
    Filed: January 7, 2011
    Date of Patent: February 10, 2015
    Assignee: Aker Subsea AS
    Inventor: Jarmo Kekarainen
  • Patent number: 8893801
    Abstract: A method is presented for connecting and disconnecting sections of a work string for use in a subterranean wellbore. A preferred method of disconnecting includes the steps of positioning a stinger and a downhole tool assembly of a work string adjacent upper and lower sealing rams, such as in a BOP and lubricator assembly. The sealing rams are closed, defining a first and second pressure zone adjacent the tool. A differential pressure is applied across the pressure zones, moving a piston element in the tool assembly. Axial movement of the piston element causes relative rotational movement of cooperating locking elements. In one embodiment, the locking elements are rotated to an unlocked position and then move relative to one another axially in response to a biasing spring. The relative axial movement of the locking elements results in unlatching of a latching assembly, thereby disconnecting the tool and stinger.
    Type: Grant
    Filed: April 2, 2012
    Date of Patent: November 25, 2014
    Assignee: Halliburton Energy Services, Inc.
    Inventors: John H Hales, Ed A Eaton, John D. Burleson, John P Rodgers
  • Patent number: 8869899
    Abstract: Provided is a method and apparatus for pulling a crown plug comprising: (a) providing a subsea lubricator having a longitudinal through bore and a jack attached to the subsea lubricator, the jack having a landing area; (b) providing a jacking string which includes a landing sub and a crown plug connector, the sub having a landing surface; (c) without the jacking string in step “b”, lowering the subsea lubricator of step “a”, to the horizontal christmas tree and attaching the lubricator to the christmas tree; (d) lowering the jacking string to the lubricator; (e) jacking up the jack such that the landing area of the jack contacts the landing surface of the landing sub; and (f) while the lubricator remains attached to the christmas tree, raising the jacking string and crown plug through and out of the lubricator.
    Type: Grant
    Filed: February 20, 2012
    Date of Patent: October 28, 2014
    Assignee: Tetra Technologies, Inc.
    Inventors: John Keith Caulfield, Patrick Brown
  • Patent number: 8783357
    Abstract: A subsea well safing method and apparatus adapted to secure a subsea well in the event of a perceived blowout in a manner to mitigate the environmental damage and the physical damage to the subsea wellhead equipment to promote the ability to reconnect and recover control of the well. The safing assembly is adapted to connect the marine riser to the BOP stack. Pursuant to a safing sequence, the well tubular is secured in the upper and lower safing assemblies and the tubular is then sheared between the locations at which it has been secured. Subsequently, an ejection device is actuated to physically separate the upper safing assembly and connected marine riser from the lower safing assembly that is connected to the BOP stack.
    Type: Grant
    Filed: August 29, 2011
    Date of Patent: July 22, 2014
    Assignee: Bastion Technologies, Inc.
    Inventors: Charles Don Coppedge, Dana Karl Kelley, Charles C. Porter, Hildebrand Argie Rumann
  • Publication number: 20140190703
    Abstract: A landing string for use in deploying equipment between a surface vessel and a subsea well comprises a separation assembly configured to permit relative movement of upper and lower regions of the landing string upon exposure to a predetermined load.
    Type: Application
    Filed: July 24, 2012
    Publication date: July 10, 2014
    Applicant: Expro North Sea Limited
    Inventors: Alistair Tennant, Paul Deacon
  • Patent number: 8689881
    Abstract: An offshore unit includes a hull and/or a deck frame, a mat attached to at least one connecting leg or a spud can attached to each of at least one connecting leg or lower hull attached to at least one connecting means. A wellhead deck is removably attached to the hull and/or deck frame and a sub-sea clamp in conjunction with a caisson or a sub-sea conductor frame is removably attached to the mat or to the at least one connecting leg, where a spud can is attached to each of the at least one connecting leg, or to the lower hull. The offshore unit is relocatable and is a platform or a rig capable of performing drilling, production, construction, accommodation, hook-up and commissioning or a combination of any of these functions thereof. The offshore unit is a self-elevating mobile platform or submersible platform or semi-submersible platform.
    Type: Grant
    Filed: March 1, 2013
    Date of Patent: April 8, 2014
    Assignee: Kingtime International Limited
    Inventors: Nagendran C. Nadarajah, Renata Anita De Raj, Mahendran Sippiah
  • Patent number: 8555981
    Abstract: A riser weak link (10) is described. The riser weak link comprises an upper housing (16) for connecting to a riser upper section (12), a lower housing (18) for connecting to a riser lower section (14), at least one connection device for releasably connecting the upper and lower housings, and a pressure application device (24) adapted to apply a coupling force to the upper housing to at least partially counter a separation force applied, in use, by well pressure, the well pressure separation force acting to separate the upper and lower housings.
    Type: Grant
    Filed: June 18, 2009
    Date of Patent: October 15, 2013
    Inventors: Jeffrey Charles Edwards, Dewi Graham Rankin
  • Patent number: 8499839
    Abstract: A connection device comprises a lock component of non-circular cross-sectional shape, the lock component being both angularly and axially moveable relative to a housing, stop means operable to limit angular movement of the lock component relative to the housing, the lock component having a threaded drive region, and a drive nut in threaded engagement with the drive region, wherein angular movement of the drive nut relative to the housing when the stop means are not engaged is able to drive the lock component for angular movement, rotation of the drive nut when the stop means are engaged causing axial displacement of the lock component relative to the housing.
    Type: Grant
    Filed: January 19, 2010
    Date of Patent: August 6, 2013
    Assignee: Viper Subsea Limited
    Inventors: Iain Reid, Paul Charles Roberts, Alistair Ross Donald
  • Patent number: 8464797
    Abstract: A method for assembling a control module having a fixed part and a removable section. The method includes configuring the fixed part of the control module to be attached to a pressure supply line for receiving a fluid under pressure; providing in the fixed part a valve manifold that houses a hydraulic activated valve; detachably attaching the removable section of the control module to the fixed part; fluidly connecting an electrically activated valve of the removable section to the hydraulic activated valve such that the electrically activated valve controls the hydraulic activated valve; and configuring the electrically activated valve to electrically connect to a control section.
    Type: Grant
    Filed: June 16, 2010
    Date of Patent: June 18, 2013
    Assignee: Hydril USA Manufacturing LLC
    Inventors: Hardev Singh, David Dietz, Jr., Luis Melendez, Dat Nguyen
  • Patent number: 8403058
    Abstract: An offshore unit includes a hull and/or a deck frame, a mat attached to at least one connecting leg or a spud can attached to each of at least one connecting leg or lower hull attached to at least one connecting means. A wellhead deck is removably attached to the hull and/or deck frame and a sub-sea clamp in conjunction with a caisson or a sub-sea conductor frame is removably attached to the mat or to the at least one connecting leg, where a spud can is attached to each of the at least one connecting leg, or to the lower hull. The offshore unit is relocatable and is a platform or a rig capable of performing drilling, production, construction, accommodation, hook-up and commissioning or a combination of any of these functions thereof. The offshore unit is a self-elevating mobile platform or submersible platform or semi-submersible platform.
    Type: Grant
    Filed: November 10, 2010
    Date of Patent: March 26, 2013
    Assignee: Kingtime International Limited
    Inventors: Nagendran C. Nadarajah, Renata Anita De Raj, Mahendran Suppiah
  • Patent number: 8322441
    Abstract: A method and system for retrieving a wear bushing from within a subsea wellhead assembly. The system includes a retrieval tool deployable on a wireline that inserts within the bushing. Latches on the tool radially project outwards and mate with a groove on the bushing inner surface. A hydraulically actuated jack is included with the tool and projects downward to the wellhead assembly to pull the bushing from its temporary coupling in the wellhead assembly. A remotely operated vehicle can be used to assist deploying the tool and for supplying hydraulics and/or control for operating the latch and the jack.
    Type: Grant
    Filed: July 10, 2009
    Date of Patent: December 4, 2012
    Assignee: Vetco Gray Inc.
    Inventor: Stephen P. Fenton
  • Patent number: 8286712
    Abstract: An apparatus for use with a subsea well includes a lubricator configured to attach to subsea wellhead equipment, an electrically-activated tool, and a coiled tubing attached to the electrically-activated tool. The electrically-activated tool is initially provided in the lubricator to allow for deployment of the electrically-activated tool on the coiled tubing into the subsea well. Multiple tools may be deployed independently from within the lubricator to latch into a concentric electrical connector within the well which may also act as a switch. A concentric electrical connector will permit the passage of a tool through the body of the connector retaining full bore access when the tool is withdrawn.
    Type: Grant
    Filed: November 8, 2010
    Date of Patent: October 16, 2012
    Assignee: Schlumberger Technology Corporation
    Inventor: Steve Wilson
  • Publication number: 20120234549
    Abstract: A method for removing a hydrocarbon production platform at sea, the production platform being connected to a hydrocarbon well, and including a support structure and an upper part being supported by the support structure, where the method includes the steps of; temporarily closing the well, removing at least part of the upper part from the support structure, positioning a well abandonment module on the support structure, which well abandonment module is constructed and arranged to perform well abandonment operations, performing abandonment operations from the well abandonment module to abandon the well, removing the well abandonment module from the support structure after the well abandonment operations are completed.
    Type: Application
    Filed: March 16, 2012
    Publication date: September 20, 2012
    Applicant: HEEREMA MARINE CONTRACTORS NEDERLAND B.V.
    Inventor: Marinus Christiaan Lammertink
  • Patent number: 8235124
    Abstract: A variable buoyancy subsea running tool for use with subsea transportable devices, such as a tree cap. The buoyancy of the running tool may be varied through fluid or gas displacement in one or more containers. Alternatively, the running tool may be configured with a buoy that has static buoyancy, with the buoyancy of the running tool being varied through the addition of a counterweight. The running tool can be used to install or uninstall a tree cap on a subsea tree. Installation of a tree cap may be actuated by a remotely operated vehicle. Additionally, the running tool may be moved by a remotely operated vehicle and may have additional features such as a position locator device.
    Type: Grant
    Filed: July 2, 2009
    Date of Patent: August 7, 2012
    Assignee: Aker Subsea Inc.
    Inventors: Glen H. Cuiper, Paulo Cezar Silva Paulo
  • Patent number: 8210264
    Abstract: The disclosure provides a subsea overload release system and method. The disclosure provides a releasable connection system than can be overridden during an overload condition, and is resettable in a subsea location in situ. During normal operation, a collet sleeve is slidably engageable with a collet having one or more fingers that can releasably couple a first member with a second member. During an overload condition, an overload piston acting on fluid in an overload reservoir causes an overload pressure and a rupture or other release of fluid through an overload pressure member, causing the overload reservoir to at least partially collapse. The collapse allows the system to extend and force open the fingers to disengage the second member from the first member. When the overload symptom is rectified, the overload reservoir can be reset and the overload pressure member reset or replaced without requiring repairs above sea surface.
    Type: Grant
    Filed: May 6, 2009
    Date of Patent: July 3, 2012
    Assignees: Techip France, Nautilus Minerals Pacific Pty Ltd
    Inventor: Harvey O. Mohr
  • Patent number: 8151890
    Abstract: A modular tree production tree assembly reduces the weight during transfer of the tree components from a barge to a production rig. The tree assembly includes an upper tree module, a lower tree module, and a choke bridge module. The upper tree module has a tree head, the lower tree module has a guidance system and ties in the flow lines to the in-field infrastructure, and the choke bridge module has the choke and instrumentation bridge to link the three components together. Prior to delivery to the rig, the components of the modular tree assembly may be joined together and tested on shore. Upon arrival at the rig, the components are individually lifted from the barge onto the rig by a crane. After the tree components are on the rig, the modular tree is reassembled and then deployed to the sea floor via the draw works.
    Type: Grant
    Filed: October 27, 2008
    Date of Patent: April 10, 2012
    Assignee: Vetco Gray Inc.
    Inventors: David N. Spencer, Michael A. Wenham, Paul W. White
  • Patent number: 8127854
    Abstract: A gas and oil recovery system including a vessel, platform or rig, with a rig floor, a riser including a pipe that extends from the vessel, platform or rig to a x-mas tree on top of a well head and via which a wire or coiled tubing is fed down into a well. The riser is movable through an opening in the rig floor, and a surface flow head connected to the riser and to a wire line or coiled tubing equipment. The surface flow head is arranged to be run through the opening in the rig floor.
    Type: Grant
    Filed: April 18, 2005
    Date of Patent: March 6, 2012
    Assignee: Vetco Gray Scandinavia AS
    Inventor: Svein A. Håheim
  • Publication number: 20120043089
    Abstract: A method for riserless intervention of a subsea well includes: lowering a pressure control assembly (PCA) from a vessel to a subsea production tree; fastening the PCA to the tree; deploying a plug running tool (PRT) into the PCA, wherein the PRT comprises a latch, an anchor, and a stroker; engaging the latch with a plug of the tree; engaging the anchor with the PCA; and operating the stroker to pull the latch and the plug from the tree.
    Type: Application
    Filed: August 15, 2011
    Publication date: February 23, 2012
    Inventors: Corey Eugene Hoffman, Tom Unsgaard
  • Publication number: 20120018164
    Abstract: A tubular clamp for gripping a tubular is disclosed. In one aspect, a tubular clamp for use with a cutting and lifting system is provided. The tubular clamp is configured to move between an opened position and a closed position. The tubular clamp further includes at least one slip member to permit the clamp to bear the weight of a severed tubular string. Lifting lugs on an outer surface of the clamp permit attachment to a lifting assembly.
    Type: Application
    Filed: July 22, 2010
    Publication date: January 26, 2012
    Inventors: William J. Tabor, Huey J. Kliebert, JR., Scott A. Marshall, Benton John Vicknair
  • Publication number: 20120012331
    Abstract: A device including a fluid transport pipe (24), a superstructure (16), and a floating barge (18) rotatably mounted on the superstructure (16) about an axis of rotation (A-A?). The pipe (24) includes a hose section (150) wound around the axis of rotation (A-A?) supported by an intermediate structure (20) mounted between the superstructure (16) and the barge (18), between a configuration rotatably driven with the barge (18) about the axis of rotation and a configuration rotatably retained about the axis of rotation (A-A?) by the superstructure (16). During a step of connecting the pipe (24), the intermediate structure (20) is placed in either the driven configuration or the retained configuration, a step of disconnecting the pipe (24) including switching the intermediate structure (20) to the other one of the driven configuration and the retained configuration.
    Type: Application
    Filed: December 29, 2009
    Publication date: January 19, 2012
    Inventor: Philippe Espinasse
  • Publication number: 20110284237
    Abstract: The method of releasing a drilling riser depending from a surface vessel from a subsea installation, comprising unlatching a connector on the primary conduit of the drilling riser, allowing the tension in the drilling riser to cause a separation between the portion of the primary conduit above the connector and the portion of the primary conduit below the connector, and the separation causing one or more control lines to be cut into an upper portion and a lower portion.
    Type: Application
    Filed: May 20, 2010
    Publication date: November 24, 2011
    Inventor: Benton Ferderick Baugh
  • Publication number: 20110168402
    Abstract: An offshore unit includes a hull and/or a deck frame, a mat attached to at least one connecting leg or a spud can attached to each of at least one connecting leg or lower hull attached to at least one connecting means. A wellhead deck is removably attached to the hull and/or deck frame and a sub-sea clamp in conjunction with a caisson or a sub-sea conductor frame is removably attached to the mat or to the at least one connecting leg, where a spud can is attached to each of the at least one connecting leg, or to the lower hull. The offshore unit is relocatable and is a platform or a rig capable of performing drilling, production, construction, accommodation, hook-up and commissioning or a combination of any of these functions thereof. The offshore unit is a self-elevating mobile platform or submersible platform or semi-submersible platform.
    Type: Application
    Filed: November 10, 2010
    Publication date: July 14, 2011
    Inventors: Nagendran C. Nadarajah, De Raj Renata Anita, Mahendran Suppiah
  • Publication number: 20110127041
    Abstract: A riser weak link (10) is described. The riser weak link comprises an upper housing (16) for connecting to a riser upper section (12), a lower housing (18) for connecting to a riser lower section (14), at least one connection device for releasably connecting the upper and lower housings, and a pressure application device (24) adapted to apply a coupling force to the upper housing to at least partially counter a separation force applied, in use, by well pressure, the well pressure separation force acting to separate the upper and lower housings.
    Type: Application
    Filed: June 18, 2009
    Publication date: June 2, 2011
    Inventors: Jeffrey Charles Edwards, Dewi Graham Rankin
  • Patent number: 7762338
    Abstract: An assembly for landing a tubing hanger in a subsea well includes a riser extending from a subsea wellhead assembly to a vessel at the surface of the sea. A tubing hanger having a string of tubing suspended therefrom is lowered through the riser with a string of conduit, and the tubing hanger lands within the subsea wellhead assembly. A sensor is positioned adjacent the subsea wellhead assembly to monitor the axial position of the tubing hanger within the subsea wellhead assembly. The sensor also communicates the axial position of the tubing hanger to the surface. A locking mechanism is carried by the tubing hanger and is selectively operable to lock the tubing hanger in place relative to the subsea wellhead assembly when the tubing hanger reaches a predetermined axial location.
    Type: Grant
    Filed: August 21, 2006
    Date of Patent: July 27, 2010
    Assignee: Vetco Gray Inc.
    Inventors: Stephen P. Fenton, Lars-Petter Sollie, Andrew Davidson
  • Patent number: 7537057
    Abstract: A connector for securing a first cylindrical member to a second cylindrical member comprises a cylindrical body which includes a first end that is attached to the first member and a second end that is positioned proximate the second member, a cylindrical housing sleeve which is positioned concentrically over the body and which includes an upper end portion that is secured to the body and a lower end portion that is disposed adjacent the second member, a cylindrical primary piston that is positioned between the body and the housing sleeve, a locking mandrel which is connected to or formed integrally with the primary piston and which includes at least first and second annular portions that have different diameters, and a split lock ring which is supported by the lower end portion adjacent a number of locking grooves in the second member and which includes at least first and second cylindrical portions that correspond to the first and second annular portions of the locking mandrel.
    Type: Grant
    Filed: July 23, 2004
    Date of Patent: May 26, 2009
    Assignee: FMC Technologies, Inc.
    Inventors: Shiva Singeetham, Eric Baltmanis
  • Patent number: 7487836
    Abstract: A subsea well intervention system that permits dynamic disconnection from subsea well intervention equipment without removing any of the equipment during a drive-off condition is provided. The system includes a blowout preventer module operatively connected to a subsea tree, a lubricator assembly attached to the blowout preventer module that provides access to the interior of the blowout preventer and the subsea tree by well intervention equipment, and an umbilical module including a fail-safe disconnect assembly. The fail-safe disconnect assembly is disconnected using hydraulic power provided by the control umbilical or by a remotely operated vehicle.
    Type: Grant
    Filed: March 11, 2005
    Date of Patent: February 10, 2009
    Assignee: Saipem America Inc.
    Inventors: Charles B. Boyce, William R. Bath
  • Patent number: 7472755
    Abstract: A method for servicing a component of a riser system, such as a flexible joint is disclosed. The riser system may be supported in a support apparatus such that the flexible joint and an adjoining section of riser are detached to allow for inspection, servicing, repair, and/or replacement of the flexible joint or various subcomponents thereof. An apparatus is also disclosed for supporting the flexible joint during servicing.
    Type: Grant
    Filed: June 27, 2005
    Date of Patent: January 6, 2009
    Inventor: David C. Riggs
  • Patent number: 7451822
    Abstract: A method for preparing to move a floating structure away from a wellbore drilled below the bottom of a body of water includes filling a riser extending from the bottom of the body of water to the floating structure with water. The water in the riser is displaced to a selected first depth below the water surface. The riser is sealed at a second selected depth shallower than the first selected depth. The portion of the riser above the second selected depth is withdrawn onto the floating structure.
    Type: Grant
    Filed: May 9, 2006
    Date of Patent: November 18, 2008
    Assignee: Noble Drilling Services Inc.
    Inventor: Hans H. J. Deul
  • Patent number: 7426963
    Abstract: This invention relates to a flowline-riser production system for the recovery of hydrocarbons from offshore wells, and a method for pigging the interior surfaces of the riser and flowlines. More particularly, this invention is a piggable flowline-riser system in which a pig is launched from or near a host production facility, down a riser into a looped flowline and returned up through the same riser. According to one embodiment of the invention, there is a piggable flowline-riser system for producing hydrocarbons comprising a riser, a “Y” joint and a looped flowline, wherein the looped flowline is in fluid communication with at least one subsea well.
    Type: Grant
    Filed: September 20, 2004
    Date of Patent: September 23, 2008
    Assignee: ExxonMobil Upstream Research Company
    Inventor: Marguerite E. O'Neill
  • Publication number: 20080105436
    Abstract: A cutter module includes a piston and a shear blade. The piston includes at least two movable telescoping elements that are adapted to expand from a first retracted length to a second expanded length. The shear blade is connected to the first piston to sever a tubing in response to the piston expanding from the retracted length to the second expanded length. The shear blade has a cutting edge that has a radius greater than 0.01 inches.
    Type: Application
    Filed: November 2, 2006
    Publication date: May 8, 2008
    Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Paul Molina, Allyn Pratt, John Yarnold
  • Patent number: 7331394
    Abstract: A self-contained well intervention system which can be deployed from a lightweight vessel and coupled directly to a wellhead is described. The system includes valve means for providing a suitable well barrier and sealing the intervention system to allow an emergency disconnect. Within the intervention system, a tool magazine is provided which contains at least one deployable intervention tool. The intervention system also contains a tool selection and deployment means based on a winch located in close proximity to the magazine and which is operable from the surface for selecting a particular tool from the magazine and for deploying the selected tool through the intervention system and the wellhead into the well. The tool magazine has a plurality of magazine pockets each of which may have a deployable tool therein.
    Type: Grant
    Filed: January 16, 2004
    Date of Patent: February 19, 2008
    Assignee: Expro North Sea Limited
    Inventors: Jeffrey Charles Edwards, Gavin David Cowie
  • Patent number: 7243729
    Abstract: The invention relates to a running tool for subsea junction plate assembly installation. The invention further relates to a method for installing a junction plate assembly using the running tool of the present invention.
    Type: Grant
    Filed: October 18, 2005
    Date of Patent: July 17, 2007
    Assignee: Oceaneering International, Inc.
    Inventors: Charles Tyrrell, Christopher Mancini
  • Patent number: 7036598
    Abstract: The invention relates to an intervention module (18) for well intervention operations in preferably a pressurized subsea well (2) with a wellhead (4) disposed on a water floor. The intervention module (18) is provided with necessary equipment to replace, under water, intervention tools (54) and thereby perform several well intervention operations in one run, without the supply of equipment from a surface vessel. The module (18) is lowered from a surface vessel and placed on the wellhead (4), possibly a BOP (12), of the well (2). The intervention module (18) is connected to the surface vessel through a connecting line/hose or a wireless connection which communicates, as a minimum, necessary control and feed-back signals. The module (18) is provided with i.e.
    Type: Grant
    Filed: August 20, 2001
    Date of Patent: May 2, 2006
    Assignee: Offshore & Marine AS
    Inventors: Odd B. Skjærseth, Geir Ueland
  • Patent number: 6964304
    Abstract: A technique for maintaining pressure integrity within a submersible system. The system utilizes a pressure housing with an internal component, such as a valve. The internal component is actuated by an external actuator via an actuator stem. A seal region is positioned to interact with the stem, such that the interior of the pressure housing is sealed and pressure integrity is maintained upon retraction of the stem from engagement with the internal component.
    Type: Grant
    Filed: December 20, 2002
    Date of Patent: November 15, 2005
    Assignee: FMC Technologies, Inc.
    Inventors: Harold Brian Skeels, Michael R. Williams
  • Patent number: 6763890
    Abstract: A modular work system permits Rig Up time to be substantially reduced by reducing the number of crane lifts required to offload equipment for a transport boat or vehicle. This is achieved by developing transport skids capable of holding multiple system components. The number of equipment components that must be mechanically coupled on location is reduced by pre-assembling the components and maintaining the assembly in operating condition during storage and transport. Skid design concepts are employed, wherein a skid system carries various pre-assembled components for transport, storage and operation. Specifically, a skid sub-system includes various related components. The components are either pre-assembled or are designed to complete a sub-assembly through final assembly on the rig. The skid is moved into place using the crane, and the assembly is completed. Additional sub-systems are mounted on additional skids which are designed to be mated with the other related skids and sub-assemblies.
    Type: Grant
    Filed: July 9, 2002
    Date of Patent: July 20, 2004
    Assignee: Schlumberger Technology Corporation
    Inventors: Yarom Polsky, Rod Shampine, Terry McCafferty
  • Publication number: 20040094305
    Abstract: The invention relates to an intervention module (18) for well intervention operations in preferably a pressurized subsea well (2) with a wellhead (4) disposed on a water floow. The intervention module (18) is provided with necessary equipment to replace, under water, intervention tools (54) and thereby perform several well intervention operations in one run, without the supply of equipment from a surface vessel. The module (18) is lowered from a surface vessel and placed on the wellhead (4), possibly a BOP (12), of the well (2). The intervention module (18) is connected to the surface vessel through a connecting line/hose or a wireless connection which communicates, as a minimum, necessary control and feed-back signals. The module (18) is provided with i.a.
    Type: Application
    Filed: June 16, 2003
    Publication date: May 20, 2004
    Inventors: Odd B Skjrseth, Geir Ueland
  • Publication number: 20040003926
    Abstract: A system and method for controllably separating a conduit into an upper portion and a lower portion. The system includes a first valve in the upper portion of the conduit above a point of separation, and a second valve in the lower portion of the conduit below the point of separation. When the conduit is separated, the valves are actuated to cease flow therethrough and prevent loss of fluids into the seawater. A hang-off tool in the lower portion of the conduit engages the well and supports the lower portion of the conduit.
    Type: Application
    Filed: July 3, 2002
    Publication date: January 8, 2004
    Inventors: Harold W. Nivens, Curtis E. Wendler
  • Publication number: 20030132002
    Abstract: A lifting top drive sub sea staging cement head in which cement slurry flows from outside into its central bore, thru a rotating swivel connection. The cement head has a rotatabley indexable reservoir cylinder with multiple cells which may be loaded with balls, and/or darts, and/or staging bombs. One first cell is kept open for circulation. The cylinder is rotatabley aligned, at will to the flow path, so that the staging elements may be washed down the drill string.
    Type: Application
    Filed: January 16, 2002
    Publication date: July 17, 2003
    Inventors: Norman B. Giebeler, James F. Giebeler
  • Patent number: 6568875
    Abstract: A connector in particular intended for use with a tension leg platform is disclosed. The connector comprises a male part (1) and a female part (2), which male part (1) is designed to engage in the female part (2) and the parts are able to engage with one another without any of the parts having to rotate in respect of the other. The female part (2) comprises an abutment ring having an internal continuous downward facing abutment shoulder (4) and the male part (1) has a discontinuous segmented ring (5). Each individual ring segment (8) is limitary independantly movable, both axially and radially, which segmented ring (5) lies slidably against a mandrel abutment (9).
    Type: Grant
    Filed: March 12, 2001
    Date of Patent: May 27, 2003
    Assignee: Kvaerner Oilfield Products AS
    Inventors: Bjørn Paulshus, Willy Bjerke, Morten Rengman Mørck
  • Patent number: 6550537
    Abstract: A subsea wellhead with a tension latching system for a casing hanger or a tubing hanger, a tension latching system for hangers, and a method for adjusting the tension on a casing hanger or tubing hanger for subsea wells.
    Type: Grant
    Filed: January 9, 2002
    Date of Patent: April 22, 2003
    Assignee: Kugerner Oilfield Products, Inc.
    Inventors: Ralph A. Alvarez, Michael J. Miller
  • Patent number: 6488093
    Abstract: The well intervention system is a subsea deployed wire line, “stiff wire” (conventional wire-line located inside reeled tubing or embedded in the tubing wall), coil tubing, or reeled pipe unit landed on the existing subsea wellhead assembly or tree, wherein the unit includes as an additional novel component a “carousel” tool caddy. The carousel is utilized to allow the remote change-out of multiple tool strings that are included in the carousel prior to deployment, thereby eliminating the need for a “riser” conduit to the surface or the need to trip tools through the riser column for tool replacement. A method for conducting a well intervention activity, wherein the method includes the step of selecting a tool for the well intervention activity from a carousel tool caddy located in close proximity to the well. The invention system may also be employed in a similar manner to conduct repair or surveillance operations for pipelines or flowlines having flow control manifolds.
    Type: Grant
    Filed: March 21, 2001
    Date of Patent: December 3, 2002
    Assignee: ExxonMobil Upstream Research Company
    Inventor: Jeff H. Moss
  • Patent number: 6367554
    Abstract: The riser system includes a small diameter riser that can be disconnected from the subsea BOP/wellhead assembly to obtain access to the wellbore for large diameter casing while continuously maintaining a hydrostatic head to control the well. The riser system further includes a large diameter riser joint having one end connected to the BOP/wellhead assembly and one or more hydraulic conduits extending from the BOP/wellhead assembly to the small diameter riser which extends to the surface. The small diameter riser has a first position where the small diameter riser is aligned and connected to the other end of the riser joint and a second position where the small diameter riser is non-aligned and unconnected with the large diameter riser joint. The riser system further includes a shifter which moves the small diameter riser from the first position to the second position. Downhole operations are conducted through the small diameter riser in the first position.
    Type: Grant
    Filed: May 26, 2000
    Date of Patent: April 9, 2002
    Assignee: Cooper Cameron Corporation
    Inventor: David H. Theiss
  • Patent number: 6336508
    Abstract: The invention is a device for eliminating the “tripping” of the BOP stack to the surface when switching between drilling and completion modes of operation on a drilling rig. This device is a new apparatus for attaching a BOP guide funnel, which will allow the funnel to be released and/or reattached while the BOP remains subsea on or near the seafloor. The new BOP guide funnel assembly consists of three basic components: a guide funnel, a connector shroud and a parking pile adapter. The guide funnel has a downwardly opening funnel on bottom (used to capture a wellhead) and an upwardly opening smaller funnel on top (used to guide the shroud back into the guide funnel during re-installation of the guide funnel). The connector shroud is permanently attached to the bottom of the BOP stack, surrounding the BOP wellhead connector and holds the guide funnel in place.
    Type: Grant
    Filed: April 14, 2000
    Date of Patent: January 8, 2002
    Assignee: Shell Oil Company
    Inventor: Roy Mitchell Guinn
  • Patent number: 6325160
    Abstract: An undersea drilling template adapted to be lowered onto a seabed by a drillpipe. The template comprises a template base and at least one arm having a releasable clamping assembly for releasably connecting the template to the drillpipe. The clamping assembly is adapted to be clamped to the drillpipe during lowering of the template and release from the drillpipe when the lowering is completed.
    Type: Grant
    Filed: May 18, 1999
    Date of Patent: December 4, 2001
    Assignee: Cooper Cameron Corporation
    Inventors: Michael James Goodwin, David Harold Theiss
  • Patent number: 6293344
    Abstract: An apparatus for retaining fluid in a pipe includes an elongated body adapted to be positioned within a subsea wellhead assembly. The elongated body has an end adapted for connection to the pipe, a flow passage for fluid communication with the pipe, and an outer surface for engagement with a sealing member in the subsea wellhead assembly. A first chamber is defined within the elongated body and connected to receive pressure from above the subsea wellhead assembly. A second chamber is defined within the elongated body and connected to receive pressure from below the subsea wellhead assembly. A valve is supported in the elongated body for movement in response to pressure differential between the first and the second chambers. The valve is movable between an open position to permit fluid flow through the flow passage and a closed position to prevent fluid flow through the flow passage.
    Type: Grant
    Filed: July 28, 1999
    Date of Patent: September 25, 2001
    Assignee: Schlumberger Technology Corporation
    Inventors: Vance E. Nixon, Gary L. Rytlewski, Anthony P. Vovers
  • Patent number: 6260624
    Abstract: An internal tieback connector for connecting a riser from a platform to a subsea wellhead having internal grooves and a casing hanger therein. The connector has an inner body which carries a lower housing adapted to land on the wellhead. A plurality of dogs abut the lower housing and are adapted to engage and lift the inner body relative to the lower housing. An upper housing is carried on the inner body and adapted to force the dogs inward into engagement with the inner body. A plurality of latch members are carried on the inner body and are adapted to engage the internal grooves when the internal is moved upward relative to the lower housing.
    Type: Grant
    Filed: July 2, 1999
    Date of Patent: July 17, 2001
    Assignee: ABB Vetco Gray, Inc.
    Inventors: Joseph William Pallini, Jr., Jerry Keith Rhodes
  • Patent number: RE38458
    Abstract: A bottom connector for the tendon of a tension leg platform uses a latch ring with an outer profile to engage a mating profile in a receptacle on the sea floor. The latch ring moves radially within a housing, relative to the receptacle, between an engaged position and a retracted position. The latch ring engages the receptacle by lowering the connector into the receptacle below the mating profile and then lifting it until the latch ring locks into the receptacle. The latch ring disengages the receptacle by lowering the connector beyond a recess located below the mating profile and then lifting the connector out of the receptacle. As the connector is lifted above the recess, a retaining ring is actuated by the recess to retain the latch ring in its retracted position.
    Type: Grant
    Filed: September 25, 2001
    Date of Patent: March 9, 2004
    Assignee: ABB Vetco Gray Inc.
    Inventors: Joseph W. Pallini, Jr., Jerry K. Rhodes, Jason R. Jackson