Means Removably Connected To Permanent Well Structure Patents (Class 166/351)
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Publication number: 20140034328Abstract: The invention provides a bore protector for a tubing hanger, the bore protector is to be arranged in a tubing hanger in a spool in a subsea production Xmas tree for through tubing rotary drilling (TTRD) in an existing production well. The bore protector is distinctive in that it comprises a means to be releasably fastened in at least one of: the spool in the Xmas tree and the tubing hanger, and a wear sleeve extending down into the tubing hanger, covering the tubing hanger sealing surfaces for the tubing hanger plugs, the wear sleeve comprises a shoulder at or near an upper end, the shoulder is arranged on a below positioned seat of a main part of the bore protector, in which position the wear sleeve is releasably fastened.Type: ApplicationFiled: January 11, 2012Publication date: February 6, 2014Applicant: Aker Subsea ASInventors: André M. Smith, Roar Eide, Bengt Dahlborg, Magnus Fjørtoft Urke, Per Bostedt, Joachim Vilhelmsson
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Publication number: 20140027125Abstract: A retrievable flow module (RFM) apparatus is provided. In one embodiment, the RFM apparatus is a standalone assembly configured to mate with a subsea device, such as a production tree. The RFM apparatus may include a frame within which various flow control and monitoring elements are disposed. The frame may have an alignment system that enables the RFM apparatus to horizontally mate with the tree. Because the RFM apparatus provides for the collocation of flow control and monitoring elements within a standalone assembly, deployment or retrieval of the flow control and monitoring elements may be accomplished in single operation. Additional systems, devices, and methods are also disclosed.Type: ApplicationFiled: October 3, 2013Publication date: January 30, 2014Applicant: Cameron International CorporationInventors: Edmund McHugh, Finbarr Evans, Tobias Voelkel
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Patent number: 8627891Abstract: The invention relates to a manifold structure that includes a frame construction (1), a number of pipes (2), a pipe bend and possible valves, deployed in a pipe system having a number of pipe terminations projecting from the frame construction. The frame construction (1) is designed with a number of support brackets (5) for respective coupling parts associated with said pipe terminations. Each support bracket (5) is made as a separate, standardized unit that includes several securing means for releasable assembly to the frame construction, where each securing means is arranged for defined adjustability in height and lateral direction for adaption to a preinstalled pipe termination.Type: GrantFiled: May 12, 2009Date of Patent: January 14, 2014Assignee: Aker Subsea ASInventor: Sigvard Omvik
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Patent number: 8622137Abstract: There is disclosed a system comprising a subsea structure; and a carrier comprising an opening adapted to receive the subsea structure.Type: GrantFiled: August 13, 2009Date of Patent: January 7, 2014Assignee: Shell Oil CompanyInventors: William Scott Childres, John Joseph Kenney, William Michael Pritchett, Bruce Clinton Volkert
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Patent number: 8607879Abstract: A distributed function control module adapted for use in a modular blowout preventer (BOP) stack for use subsea comprises a housing, adapted to be manipulated by a remotely operated vehicle (ROV) with a stab portion adapted to be received into a BOP stack control module receiver. Control electronics, adapted to control a predetermined function with respect to the BOP stack, are disposed within the housing and connected to one or more controllable devices by a wet mateable connector interface.Type: GrantFiled: March 23, 2010Date of Patent: December 17, 2013Assignee: Oceaneering International, Inc.Inventor: Graeme Reynolds
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Patent number: 8579033Abstract: What is provided is a method and apparatus wherein a swivel can be detachably connected to an annular blowout preventer while the drill string is being rotated and/or reciprocated. In one embodiment the sleeve or housing can be rotatably and sealably connected to a mandrel. The swivel can be incorporated into a drill or well string and enabling string sections both above and below the sleeve to be rotated in relation to the sleeve. In one embodiment the drill or well string does not move in a longitudinal direction relative to the swivel. In one embodiment, the drill or well string does move longitudinally relative to the sleeve or housing of the swivel.Type: GrantFiled: April 14, 2011Date of Patent: November 12, 2013Assignee: Mako Rentals, Inc.Inventors: Kip M. Robichaux, Terry G. Robichaux
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Publication number: 20130292130Abstract: A subsea system includes an electrically powered control system for controlling the subsea system and a replaceable reserve battery electrically coupled to the control system to provide backup and/or supplemental power to the control system when the reserve battery is activated. The reserve battery is provided in a housing having a first coupling, the subsea system includes a second coupling, and the first and second couplings are detachably connectable to each other and include electrical connections so that the reserve battery is replaceable while the subsea system remains below the sea-surface.Type: ApplicationFiled: January 7, 2013Publication date: November 7, 2013Applicants: CAMERON INTERNATIONAL CORPORATION, EAGLEPICHER TECHNOLOGIES, LLCInventors: John BENNETT, Greg MILLER, Mike PARROT, Jim FERRARO, Greg KIRK, Dharmesh BHAKTA, Donald Scott COONROD
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Publication number: 20130284449Abstract: The present invention provides monitoring means for monitoring the space and volume within a lower annulus. In particular, the monitoring means monitors the space and volume within the lower annulus 52 located between the inner surface of the 22 intermediate casing string 22 and the outer surface of the inner casing string 32. Furthermore, the monitoring means provides the capability to retrieve and/or introduce fluid(s) into the annular space 52. The monitoring means provides a port, specifically a passageway 100, which extends upwardly from the annular space 52 to an outlet located above the hanger 36 for the intermediate casing string 22. The passageway 100 is provided in a sleeve 102. The monitoring means includes a sensor located above the hanger 36 which means that the fluid in the annular space 52 can be monitored without the need for penetrating a casing in the wellhead.Type: ApplicationFiled: October 5, 2011Publication date: October 31, 2013Applicant: Plexus Holdings, PLC.Inventors: Craig Francis Bryce Hendrie, Herman Bernard Van Bilderbeek, Michael Robertson
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Patent number: 8561705Abstract: A wear bushing having a lead impression block is landed axially above a casing hanger and actuated to test an elevation of lock ring grooves formed in a wellhead. Then, drilling operations are performed through the wear bushing. The wear bushing includes a first tubular member having an axis and a second tubular member coaxial with the first tubular member. The second tubular member moves down to actuate a lead impression assembly to measure an elevation within the wellhead with the lead impression block. After the drilling operations are completed, the deformed lead impression block is retrieved along with the wear bushing.Type: GrantFiled: April 13, 2011Date of Patent: October 22, 2013Assignee: Vetvo Gray Inc.Inventor: Thomas McCreath Wilson
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Publication number: 20130269948Abstract: A method for abandonment of a subsea well includes: fastening a pressure control assembly (PCA) to a subsea wellhead; and deploying a tool string into the PCA. The tool string includes a packer and an upper perforator located above the packer. The method further includes: closing a bore of the PCA above the tool string with a solid barrier; and setting the packer against an inner casing hung from the subsea wellhead. The method further includes, while the PCA bore is closed, perforating a wall of the inner casing by operating the upper perforator. The method further includes injecting cement slurry into an inner annulus formed between the inner casing and an outer casing hung from the subsea wellhead.Type: ApplicationFiled: February 26, 2013Publication date: October 17, 2013Applicant: Wild Well Control, Inc.Inventors: Corey Eugene HOFFMAN, Stace Brac McDANIEL, Christopher John MURPHY
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Patent number: 8550170Abstract: A retrievable flow module (RFM) apparatus is provided. In one embodiment, the RFM apparatus is a standalone assembly configured to mate with a subsea device, such as a production tree. The RFM apparatus may include a frame within which various flow control and monitoring elements are disposed. The frame may have an alignment system that enables the RFM apparatus to horizontally mate with the tree. Because the RFM apparatus provides for the collocation of flow control and monitoring elements within a standalone assembly, deployment or retrieval of the flow control and monitoring elements may be accomplished in single operation. Additional systems, devices, and methods are also disclosed.Type: GrantFiled: March 15, 2012Date of Patent: October 8, 2013Assignee: Cameron International CorporationInventors: Edmund McHugh, Finbarr Evans, Tobias Voelkel
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Patent number: 8534364Abstract: An underwater placed assembly produces gas or gas and oil/condensate from a subsea gaseous reservoir, where at least one production well is provided from the seabed to a production zone and at least one water injection well is provided from the seabed to an injection zone. The assembly includes: a pressure increasing device connected to the outlet of the production well in order to increase the pressure in a production flow from the production well, and a water turbine that is connected to and driving the pressure increasing device.Type: GrantFiled: December 18, 2008Date of Patent: September 17, 2013Assignee: Statoil ASAInventor: Harald Underbakke
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Patent number: 8528646Abstract: An apparatus for blocking or capping a pipe end is disclosed. The apparatus includes a tubular body defining a central cavity having an inlet, an outlet, and an axis. The apparatus also includes a plurality of conical blocker rings mounted to an inner diameter surface of the tubular body within the cavity, at least some of the blocker rings being rigid and some of the blocker rings being compliant. The blocker rings are adapted to seal to a pipe end inserted into the central cavity. The rigid blocker rings have an outer diameter joined to an inner diameter of the central cavity, and the compliant blocking rings have an inner diameter smaller than an inner diameter of the rigid blocker rings and are adapted to seal around an exterior of the pipe when inserted from the inlet.Type: GrantFiled: April 14, 2011Date of Patent: September 10, 2013Assignee: Vetco Gray Inc.Inventor: Pawel Karol Stezycki
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Publication number: 20130213662Abstract: A coiled tubing lifting frame (10) for deploying coiled tubing in a riser (32). The coiled tubing lifting frame (10) comprises a coiled tubing injector (12) and the frame (10) is configured to position the coiled tubing injector (12) relative to a support (44). The coiled tubing lifting frame (10) is configured to support the riser (32). Methods of deploying a riser (32) and coiled tubing in a riser (32), including supporting the riser (32) with a coiled tubing lifting frame (10).Type: ApplicationFiled: July 15, 2011Publication date: August 22, 2013Applicant: HELIX ENERGY SOLUTIONS (U.K.) LIMITEDInventors: Leigh Beck, Colin Nicol
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Publication number: 20130206420Abstract: A retrievable flow module (RFM) apparatus is provided. In one embodiment, the RFM apparatus is a standalone assembly configured to mate with a subsea device, such as a production tree. The RFM apparatus may include a frame within which various flow control and monitoring elements are disposed. The frame may have an alignment system that enables the RFM apparatus to horizontally mate with the tree. Because the RFM apparatus provides for the collocation of flow control and monitoring elements within a standalone assembly, deployment or retrieval of the flow control and monitoring elements may be accomplished in single operation. Additional systems, devices, and methods are also disclosed.Type: ApplicationFiled: March 15, 2012Publication date: August 15, 2013Applicant: CAMERON INTERNATIONAL CORPORATIONInventors: Edmund McHugh, Finbarr Evans, Tobias Voelkel
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Publication number: 20130199793Abstract: A method of well intervention in a subsea well having a wellhead on the sea floor includes extending an intervention hose downwardly through the sea from a hose drum installed on a vessel on the sea surface into the well through a subsea intervention stack installed on the wellhead. The intervention hose is exposed directly to the ambient sea between the vessel and the top of the subsea intervention stack. In a method of well intervention, an intervention hose extends from a hose drum and into a well. The hose is driven out of the well without the use of an injector by pulling the hose out of the well with the hose drum. In a method of well intervention, an intervention hose extends from a hose drum towards a wellhead, with the hose being guided downward from the drum towards the wellhead by a guiding sheave.Type: ApplicationFiled: August 22, 2011Publication date: August 8, 2013Applicant: QUAILITY INTERVENTION ASInventors: Bjorn Bro Sorensen, Bjarne Langeteig, Jostein Alvaern
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Patent number: 8485260Abstract: A system and method to allow backup or alternate fluid flow routes around malfunctioning components using removable, modular component sets. In one exemplary embodiment, an ROV establishes a backup hydraulic flow to a BOP function by attaching one end of a hose to a modular valve block and the other end to an intervention shuttle valve, thus circumventing and isolating malfunctioning components. A compound intervention shuttle valve is provided that comprises first and second primary inlets, first and second secondary inlets, and an outlet. A modular valve block is provided that comprises a directional control valve, a pilot valve, a manifold pressure regulator, a pilot pressure regulator, stab type hydraulic connections and an electrical wet-make connection.Type: GrantFiled: March 30, 2012Date of Patent: July 16, 2013Assignee: Transocean Offshore Deepwater DrillingInventors: Steve O'Leary, Tom Thrash, Angela Donohue
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Patent number: 8485262Abstract: A modular wellhead system having the capability for single or dual annulus via interchangeable heads, a unique capping system, and other features. A unique wellhead manual positive lock system incorporating an energizable inner bite ring for engaging the casing tubing, a compressible slip hanger for the tubing, as well as a hydraulic jack for lifting the tubing from the well to reintroduce tension are provided, the system being particularly suitable for use in conjunction with repair or low pressure plug and abandon (P&A) operations. Components of the system are designed for assembly via locking pins for diver friendly operation, While the present system is designed principally for use in subsea environments, the system can likewise be utilized on land or platforms.Type: GrantFiled: April 16, 2012Date of Patent: July 16, 2013Inventor: John W. Angers
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Publication number: 20130175043Abstract: What is provided is a method and apparatus which can be detachably connected to an annular blowout preventer thereby separating the drilling fluid or mud into upper and lower sections and allowing the fluid to be displaced in two stages, such as while the drill string is being rotated and/or reciprocated. In one embodiment the sleeve can be rotatably and sealably connected to a mandrel. The swivel can be incorporated into a drill or well string and enabling string sections both above and below the sleeve to be rotated in relation to the sleeve. In one embodiment the drill or well string does not move in a longitudinal direction relative to the swivel. In one embodiment, the drill or well string does move longitudinally relative to the sleeve of the swivel.Type: ApplicationFiled: November 27, 2012Publication date: July 11, 2013Applicant: MAKO RENTALS, INC.Inventor: Mako Rentals, Inc.
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Publication number: 20130161022Abstract: System and method provide a rapid mobilization and deployment technique for effectively mechanically dispersing marine oil spills that either eliminates or reduces the use of chemical dispersants. The disclosed systems and methods work by mechanically generating finely dispersed oil and gas droplets which may improve the dispersion of the hydrocarbons into the water column which can increase the rate of natural degradation of hydrocarbons in the water column.Type: ApplicationFiled: December 21, 2012Publication date: June 27, 2013Applicant: BP CORPORATION NORTH AMERICA INC.Inventor: BP Corporation North America INC.
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Publication number: 20130161020Abstract: Methods and apparatus for diverting fluids either into or from a well are described. Some embodiments include a diverter conduit that is located in a bore of a tree. The invention relates especially but not exclusively to a diverter assembly connected to a wing branch of a tree. Some embodiments allow diversion of fluids out of a tree to a subsea processing apparatus followed by the return of at least some of these fluids to the tree for recovery. Alternative embodiments provide only one flowpath and do not include the return of any fluids to the tree. Some embodiments can be retro-fitted to existing trees, which can allow the performance of a new function without having to replacing the tree. Multiple diverter assembly embodiments are also described.Type: ApplicationFiled: November 28, 2012Publication date: June 27, 2013Applicant: CAMERON SYSTEMS (IRELAND) LIMITEDInventor: Cameron Systems (Ireland) Limited
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Patent number: 8430167Abstract: Control lines on the outer surface of a tubular disposed within a drilling riser casing may be encapsulated to facilitate formation of a seal in an annular space defined by an inner surface of the drilling riser casing and an outer surface of the tubular. More specifically, an encapsulation body may be configured to at least partially encase control lines. The encapsulation body may include a first surface and a second surface. The first surface may have an arcuate shape that corresponds to the outer surface of the tubular to facilitate formation of a seal between the first surface of the encapsulation body and the outer surface of the tubular when the first surface of the encapsulation body abuts the outer surface of the tubular. The second surface may be shaped to provide a geometrically continuous periphery about the tubular and the encapsulation body when the first surface of the encapsulation body abuts the outer surface of the tubular.Type: GrantFiled: June 29, 2010Date of Patent: April 30, 2013Assignee: Chevron U.S.A. Inc.Inventor: John A. McD. Cameron
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Publication number: 20130092383Abstract: 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.Type: ApplicationFiled: October 11, 2012Publication date: April 18, 2013Applicant: WEATHERFORD/LAMB, INC.Inventor: WEATHERFORD/LAMB, INC.
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Publication number: 20130087342Abstract: A riser system and method including a bore submerged surface package of valves, a cross over assembly with a high pressure-low pressure connector connected to the bore submerged surface package of valves, a high pressure insert, and a telescoping flow tube. The riser system also include a high pressure bore subsea stack, a low pressure slip joint, a tension ring, a flex joint, a diverter, a mandrel capable of interfacing with the high pressure-low pressure connector, a high pressure mandrel crossover and at least one high pressure insert riser joint, a high pressure-low pressure latch, a telescoping flow tube telescopic conduit, at least one telescoping flow tube latch, a telescoping flow tube low pressure flex joint, a telescoping flow tube main housing, or a rotating control device.Type: ApplicationFiled: October 4, 2012Publication date: April 11, 2013Applicant: HELIX ENERGY SOLUTIONS GROUP, INC.Inventor: HELIX ENERGY SOLUTIONS GROUP, INC.
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Patent number: 8393399Abstract: System and method for controlling a blowout preventer (BOP) stack and a tree attached to a wellhead of a well. The system includes at least a MUX pod configured to receive electrical signals and a fluid under pressure, and to provide a first set of functions to the LMRP part, and a second set of functions to a lower BOP part; a pod extension module configured to receive the fluid under pressure from the MUX pod, and to provide a third set of functions to the tree based on the received fluid under pressure; and a control part configured to be attached to the tree and to communicate with the pod extension module. The third set of functions for the tree is different from the second set of functions provided to the lower BOP part.Type: GrantFiled: November 30, 2010Date of Patent: March 12, 2013Assignee: Hydril USA Manufacturing LLCInventor: Robert Arnold Judge
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Patent number: 8381819Abstract: A system for rotating an element inside a pressure containing housing. In some embodiments, the mechanism includes a pressure containing housing having an opening through a wall of the housing into an internal chamber in which, in use, the element to be rotated is located, a bushing located within the opening, and a worm gear rotatably mounted in the bushing. The worm gear is offset from the axial center of the bushing such that rotation of the bushing moves the worm gear between an extended position, wherein the thread of the worm gear engages an element in the chamber, and a retracted position, wherein the thread is disengaged from the element in the chamber.Type: GrantFiled: October 13, 2008Date of Patent: February 26, 2013Assignee: Cameron International CorporationInventors: Robert Fern, Ted Thornburrow
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Patent number: 8376050Abstract: A system for sampling production well production fluids from a manifold interface panel on a subsea production manifold. In some embodiments, the system includes a remotely operated vehicle, a skid coupled to the remotely operated vehicle, a sample tank supported on the skid, and a fluid transfer pump operable to convey production fluid from at least one of the production wells through the manifold interface panel into the sample tank.Type: GrantFiled: June 24, 2010Date of Patent: February 19, 2013Assignee: Cameron International CorporationInventors: Mike Cumming, Alan Dawson, Roger Osborne
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Patent number: 8376049Abstract: A running tool for use in handling control modules on a subsea production tree. The running tool is deployable on wire line and includes a column like body and a connector adapted for connection to the production tree. The running tool also includes a hoist system that is selectively positioned by a swiveling jib crane for handling the control modules. A replacement control module can be included with the running tool when the tool is deployed from above the sea surface. After the running tool connects to the production tree, the jib crane can position the hoist for attachment to and removal of an existing control module on the production tree. The hoist can then to attach to and install the replacement control module and can be further manipulated to retrieve the existing control module and stow it onto the body.Type: GrantFiled: September 30, 2010Date of Patent: February 19, 2013Assignee: Vetco Gray Inc.Inventor: Robert Bell
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Patent number: 8353351Abstract: Pressure within a subsea well is managed as temperature within the well fluctuate. The management of the pressure mitigates stress to the structure of the well caused by the pressure. To manage the pressure, fluid is received from and/or provided to the well to reduce and/or increase pressure within the well.Type: GrantFiled: May 20, 2010Date of Patent: January 15, 2013Assignee: Chevron U.S.A. Inc.Inventors: Robert B. Carpenter, Omid Oujani, Krystian K. Maskos, John Lofton
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Patent number: 8342248Abstract: An apparatus for venting an annular space between a liner and a pipeline of a subsea riser used for conveying hydrocarbons, the apparatus comprising a permeate recovery device for recovering permeate passing through the liner into the annular space. The permeate recovery device includes a first vent port in a wall of the pipeline at or adjacent a lower region of the pipeline and communicating with a permeate recovery line defining a flow path between the annular space and a permeate collection vessel. A one-way valve is associated with the permeate recovery line for preventing flow from the permeate recovery line into the annular space. A gaseous permeate recovery line connected to a second vent port at an upper region of the pipeline defining a flow of gaseous permeate from the annular space.Type: GrantFiled: February 8, 2008Date of Patent: January 1, 2013Assignee: Technip France SAInventors: Scott Hall, Sylvain Denniel, Jeroen Remery
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Patent number: 8342249Abstract: According to one or more aspects of the invention, a method for drilling an offshore wellbore into a seabed from a platform positioned proximate to the water surface comprises making-up a first tubular string with a first conveyance assembly and running the first tubular string into the wellbore with the first conveyance assembly, wherein the first tubular string enters the wellbore from the water column at an entry position proximate to the seabed; performing a wellbore task with the first tubular string; while the wellbore task is being performed with the first tubular string, making-up a second tubular string in the water column from a second conveyance assembly; withdrawing the first tubular string from the wellbore with the first conveyance assembly once the wellbore task is completed; and running the second tubular string with the second conveyance assembly into the wellbore at the entry point from the water column.Type: GrantFiled: July 21, 2010Date of Patent: January 1, 2013Assignee: BP Corporation North America Inc.Inventor: Michael L. Payne
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Publication number: 20120325488Abstract: An apparatus that includes a chemical-injection management system. The chemical-injection management system may include a tree interface configured to couple the chemical-injection management system to a tree and a positive-displacement flow meter.Type: ApplicationFiled: September 3, 2012Publication date: December 27, 2012Applicant: CAMERON INTERNATIONAL CORPORATIONInventors: Andrew Grace, Gregory Greene, Edmund McHugh
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Publication number: 20120318518Abstract: 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: ApplicationFiled: May 11, 2012Publication date: December 20, 2012Inventor: Stephen Paul FENTON
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Patent number: 8322434Abstract: A Vertical Annular Separation and Pumping System (VASPS) utilizing a outer annulus liquid discharge arrangement to replace a standard pump shroud associated with an electrical submersible pump. The outer annulus liquid discharge arrangement directs produced wellbore liquids around the electrical submersible pump motor to provide a cooling medium to prevent overheating and premature failure of the electrical submersible pump.Type: GrantFiled: May 2, 2006Date of Patent: December 4, 2012Assignee: ExxonMobil Upstream Research CompanyInventors: Brian J. Fielding, Tracy A. Fowler
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Patent number: 8322442Abstract: A method of unloading a well using a modular adapter having a pump, a pump suction line, and a pump discharge line. The adapter is connected to a subsea wellhead assembly so that the pump suction line communicates with a main bore in the wellhead assembly and the pump discharge line communicates with a production line attached to the wellhead assembly. The production line is isolated from the main bore and the pump draws fluid from within the well and discharges it into the production line. After unloading the well, the adapter can be removed and moved to another location for well unloading.Type: GrantFiled: December 10, 2009Date of Patent: December 4, 2012Assignee: Vetco Gray Inc.Inventor: Robert K. Voss
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Patent number: 8322440Abstract: A wellhead assembly having a data sensor circuit for transmitting sensed data from within a wellbore to the well surface. The circuit includes a signal conduit axially inserted within the wall of a stab unit with connectors at the top and bottom portions of the stab unit. Corresponding connection leads are included within the wellhead assembly to connect with the stab unit connectors. The connectors may comprise a gallery ring wet connect.Type: GrantFiled: March 6, 2009Date of Patent: December 4, 2012Assignee: Vetco Gray Inc.Inventor: Davis S. Christie
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Patent number: 8322441Abstract: 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: GrantFiled: July 10, 2009Date of Patent: December 4, 2012Assignee: Vetco Gray Inc.Inventor: Stephen P. Fenton
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Patent number: 8307903Abstract: 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: GrantFiled: June 24, 2009Date of Patent: November 13, 2012Assignee: Weatherford / Lamb, Inc.Inventors: Thomas M. Redlinger, Andrew Antoine, My Le, Richard J. Segura
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Publication number: 20120273217Abstract: Embodiments of the present invention generally relate to a casing tester for plugging and abandoning a wellbore. In one embodiment, a method of testing an annulus defined between a first tubular string and a second tubular string includes engaging a first annular packer with an outer surface of the first tubular string and engaging a second annular packer with an outer surface of the second tubular string. The tubular strings extend into a wellbore. The method further includes injecting a test fluid between the packers until a predetermined pressure is exerted on the annulus.Type: ApplicationFiled: July 11, 2012Publication date: November 1, 2012Inventors: Corey Eugene Hoffman, Dolphus C. Green, III
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Patent number: 8281863Abstract: A removable module for actuating elements, such as valves, within a subsea production tree. The module can include a motor, a drive shaft, and a ball screw. Embodiments exist where only the motor is removable, optionally the motor and drive shaft and/or all module elements are removable. A fail safe system is included that moves the production tree element into a pre-designated fail safe position.Type: GrantFiled: February 27, 2009Date of Patent: October 9, 2012Assignee: Vetco Gray Inc.Inventor: Robert K. Voss
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Patent number: 8235121Abstract: A jumper including an upstream connector configured to communicate with an umbilical, and a downstream connector configured to communicate with an end device. The jumper also includes a conduit having a first end attached to the upstream connector and a second end attached to the downstream connector, a plurality of valves, and a programmable processor.Type: GrantFiled: December 16, 2009Date of Patent: August 7, 2012Assignee: Dril-Quip, Inc.Inventor: Alfred Moore Williams
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Patent number: 8230928Abstract: An internal tree cap having a running configuration and a latched configuration to be selectively secured to a tree spool. The tree cap may include an inner sleeve movable between upper and lower positions. The movement of the inner sleeve to the lower position may simultaneously engage a locking profile within the tree spool and energize a sealing element around the exterior of the tree cap. The tree cap may be a low profile tree cap that is flush with the top of the tree spool when installed. The tree cap may provide a collateral beneficial locking means to secure a tubing hanger within the tree spool. A lower housing may be attached to the tree cap to seal on the exterior of the upper neck of the tubing hanger. The tree cap may include a profile to accept a wireline plug.Type: GrantFiled: April 21, 2009Date of Patent: July 31, 2012Assignee: Aker Subsea Inc.Inventors: Glen H. Cuiper, Paulo Cezar Silva Paulo, André Smith
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Patent number: 8220551Abstract: A compact, low footprint water separation system for use in subsea well operations. A subsea production tree has a vertical passage and at least one laterally extending branch. A subsea gravity separation device having a hollow toroidal body detachably is mounted around and connected to the production tree. An inlet on a first side portion of the separation device is connected to the at least one laterally extending branch of the production tree and admits production fluid. The production fluid flows through the separation device where it passes through a separation unit. After passing through a separation unit, less dense fluid is discharged through an upper outlet and more dense fluid is discharged through a lower outlet. The upper and lower outlets are positioned opposite the first side portion of the separation device.Type: GrantFiled: April 27, 2009Date of Patent: July 17, 2012Assignee: Vetco Gray Inc.Inventor: Stephen P. Fenton
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Patent number: 8220550Abstract: A running tool for coaxially setting together subsea wellhead housings, such as a high pressure wellhead housing within a low pressure wellhead housing. The tool includes a conically shaped body that is insertable within the inner most housing, a frame with a base, an axial bore and latches. The base perpendicularly rests on top of an inner housing and the latches extend from the base to connect with an outer housing. The bore is formed to accommodate the tool freely therethrough. Wedge shaped members are provided between the base and inner housing top having their wide ends contactable by the tool. Urging the tool through the bore pushes the wedges radially outward that imparts a force between the base and inner housing top in one direction. The attached latches apply an oppositely directed force onto the outer housing.Type: GrantFiled: June 23, 2009Date of Patent: July 17, 2012Assignee: Vetco Gray Inc.Inventors: Gregory M. Dunn, Joseph W. Pallini, Jr.
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Patent number: 8215405Abstract: Year 2010 showed us that the oil/gas industry was not prepared to shut down in few days a high pressure oil/gas well. The Gulf of Mexico was polluted by thousands of barrels of oil that were leaking from a high pressure well. The environment damage was humongous as well as the economical loses. Here, I am presenting a method to shut down a high pressure oil/gas well in matter of days rather than in months. This method keeps the well integrity. This method is effective even if the well integrity was compromised.Type: GrantFiled: May 23, 2011Date of Patent: July 10, 2012Inventor: Jorge Fernando Carrascal
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Patent number: 8186441Abstract: A system and method to allow backup or alternate fluid flow routes around malfunctioning components using removable, modular component sets. In one exemplary embodiment, an ROV establishes a backup hydraulic flow to a BOP function by attaching one end of a hose to a modular valve block and the other end to an intervention shuttle valve, thus circumventing and isolating malfunctioning components. A compound intervention shuttle valve is provided that comprises first and second primary inlets, first and second secondary inlets, and an outlet. A modular valve block is provided that comprises a directional control valve, a pilot valve, a manifold pressure regulator, a pilot pressure regulator, stab type hydraulic connections and an electrical wet-make connection.Type: GrantFiled: June 11, 2010Date of Patent: May 29, 2012Assignee: Transocean Offshore Deepwater Drilling Inc.Inventors: Steve Donohue, Angela Donohue, legal representative, Steve O'leary, Tom Thrash
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Patent number: 8141643Abstract: A method of installing equipment subsea comprising the steps of: assembling the equipment within a frame; submerging in the sea at least a part of an assembly comprising the frame and the equipment; coupling the at least partially submerged assembly to a vessel; transporting the at least partially submerged assembly proximate a subsea installation site; coupling the assembly to an installation device; and installing the equipment at the installation site using the installation device. A frame for supporting equipment is also disclosed wherein the frame is shaped to match the dimensions of the equipment to be supported. The frame comprises at least one clamp having a first half clamp member for releasably engaging a second half clamp member of a second structure and a full clamp member for clamping around and supporting the equipment. The first half clamp member and the full clamp member can be integrally formed.Type: GrantFiled: July 30, 2007Date of Patent: March 27, 2012Assignee: Subsea 7 LimitedInventor: Mick Fowkes
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Publication number: 20120000665Abstract: Well template (11) for the protection of equipment for wells on the sea bed, comprising outer, upper template parts (17a, 17b) and flippable protection hatches (15) which, in a closed position, protect well slots. The protection hatches (15) are mounted so that they can flip up about two non-parallel flip axes.Type: ApplicationFiled: March 24, 2010Publication date: January 5, 2012Applicant: AKER SUBSEA ASInventor: Sigvard Omvik
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Publication number: 20110290500Abstract: Methods and apparatus for diverting fluids either into or from a well are described. Some embodiments include a diverter conduit that is located in a bore of a tree. The invention relates especially but not exclusively to a diverter assembly connected to a wing branch of a tree. Some embodiments allow diversion of fluids out of a tree to a subsea processing apparatus followed by the return of at least some of these fluids to the tree for recovery. Alternative embodiments provide only one flowpath and do not include the return of any fluids to the tree. Some embodiments can be retro-fitted to existing trees, which can allow the performance of a new function without having to replacing the tree. Multiple diverter assembly embodiments are also described.Type: ApplicationFiled: August 8, 2011Publication date: December 1, 2011Applicant: CAMERON INTERNATIONAL CORPORATIONInventors: Ian Donald, John Reid
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Patent number: 8056634Abstract: A running tool for lowering a christmas tree to a subsea wellhead. The running tool includes an off center adjustment to compensate for asymmetric weight distribution in the christmas tree. The running tool comprises a main body, latches for coupling the body to the christmas tree, an offset arm connected to the body, and a lift arm (drill pipe adaptor) connected to the lift arm and selectively positioned on the lift arm to offset and compensate for the christmas tree asymmetric weight distribution.Type: GrantFiled: April 14, 2008Date of Patent: November 15, 2011Inventor: David N. Spencer