Means Removably Connected To Permanent Well Structure Patents (Class 166/351)
  • Patent number: 8037939
    Abstract: The invention relates to a riser pipe section comprising a main tube (2), at least one auxiliary line element (3) arranged substantially parallel to said tube (2), characterized in that the ends of main tube (2) comprise connecting means (8) allowing longitudinal stresses to be transmitted and in that the ends of auxiliary line element (3) comprise linking means (5-6) allowing longitudinal stresses to be transmitted.
    Type: Grant
    Filed: October 4, 2006
    Date of Patent: October 18, 2011
    Assignee: Institut Francais du Petrole
    Inventors: Yann Poirette, Gérard Papon, Jean Guesnon
  • Patent number: 8016042
    Abstract: In accordance with certain embodiments, the present invention provides a connector for attaching to a multi-toothed profile on a wellhead features a tooth profile that staggers loading preferably starting at a loading surface furthest from the connector body sitting on the wellhead and moving toward the connector body. The staggered loading more evenly distributes stresses on the matching loading surfaces as compared to the result of using a tooth profile on the connector that nearly exactly matches the profile on the wellhead. The joint can then take advantage of an increased preload and exhibit improved stress characteristics when operating at high loading conditions.
    Type: Grant
    Filed: September 30, 2009
    Date of Patent: September 13, 2011
    Assignee: Cameron International Corporation
    Inventors: Michael W. Spiering, Maoye Sun, Paul D. Bunch, Eric D. Larson
  • Patent number: 8006765
    Abstract: A well servicing tool storage system for subsea well intervention is disclosed which provides a tool storage means as part of the intervention system and which has a plurality of tool storage arms deployed around the tool storage means. Each arm has a clamp capable of clamping a tool, and moving the clamped tool between a stored position near the perimeter of the tool storage means, and a deployed position in the centre of the tool storage means where the tool can be made up into a wireline connection.
    Type: Grant
    Filed: June 3, 2005
    Date of Patent: August 30, 2011
    Assignee: Expro AX-S Technology Limited
    Inventors: Andrew Richards, Mark Davies
  • Patent number: 7984765
    Abstract: A system and method is described for well intervention in subsea installed oil and gas wells, comprising a surface vessel (10), or rig, with equipment (22) for handling and controlling a connection string (20) for downhole tools, and also a system (26) for the supply and return of drilling fluid, from where the connection string (20) for the downhole tool runs down in an actual drilling hole (36) of a well on the subsea, where a X-mas tree (12) with associated blowout preventer (16) is arranged on the well, and where a return line (24) for drilling fluid runs up to said system (26) on the surface vessel or the rig. The connecting string (20) for downhole tools runs into the well through open sea without a riser or landing string being fitted, and a removable intervention valve (14) is arranged in the drilling hole (36), where the intervention valve is arranged to function as a testable, temporary barrier.
    Type: Grant
    Filed: February 15, 2006
    Date of Patent: July 26, 2011
    Assignee: Well Intervention Solutions AS
    Inventor: Tom Kjetil Askeland
  • Publication number: 20110168401
    Abstract: A subsea coiled tubing injector apparatus is disclosed. The subsea coiled tubing injector apparatus includes a linear actuator and a pair of carriages coupled via the linear actuator. The linear actuator is electrically powered and is configured to apply lateral force to the carriages. The carriages are configured to move substantially laterally with respect to one another. Each carriage includes a tubing engagement assembly configured to engage tubing interposed between the carriages.
    Type: Application
    Filed: January 11, 2010
    Publication date: July 14, 2011
    Inventor: Galen Hebert
  • Patent number: 7958948
    Abstract: A system and method is described for use and return of drilling fluid/cuttings from a well, which is drilled on the ocean floor, in connection with offshore related oil production and gas production, where, from a drilling rig or drilling vessel (10), a drill stem (12) runs down into the bore hole and where a blowout preventer (BOP) is placed on said well, without mounting a riser between the rig or the vessel and said blowout preventer. A sealing and pressure-regulating device (16) is arranged on the blowout preventer (14) arranged to regulate the level of the drilling fluid, and thus the outlet pressure of the drilling fluid in said sealing and pressure-regulating device, and a pump module (18) is set up at a suitable distance adjacent said sealing and pressure-regulating device, where the pump module is arranged to pump said drilling fluid up to the ocean surface via an external return pipe.
    Type: Grant
    Filed: August 18, 2005
    Date of Patent: June 14, 2011
    Assignee: AGR Subsea AS
    Inventor: Roger Stave
  • Publication number: 20110114329
    Abstract: An apparatus and method for providing a controllable supply of fluid, and optionally power and/or communication signals, to a subsea equipment are provided. The fluid may be a water-based fluid, oil-based fluid, or chemicals. The apparatus includes a reservoir disposed on a seabed for storing a supply of fluid for delivery to the subsea well equipment. A subsea pumping device is configured to receive the fluid from the reservoir, pressurize the fluid, and deliver the pressurized fluid to an accumulator of a hydraulic power unit disposed on the seabed. The hydraulic power unit can store the pressurized fluid and control an output of the pressurized fluid to the subsea well equipment, thereby providing a subsea fluid source for the subsea equipment.
    Type: Application
    Filed: November 18, 2009
    Publication date: May 19, 2011
    Inventors: Chukwuemeka U. Emecheta, Thomas E. O'Donnell, Omid Oujani, Hailing An, Baha T. Tanju, George Siappas
  • Patent number: 7934560
    Abstract: A free standing riser system includes a riser, a subsea intervention unit, and an umbilical line. The riser includes interconnected joints linked to one another, a lower-end of the riser being coupled to a wellhead and an upper-end of the riser enclosed in a buoy assembly, including a terminal, the riser being maintained in an erect, substantially vertical position. The subsea intervention unit is provided above the riser, and includes three connections: one connection to the terminal of the riser, one connection to a flexible jumper that is connected to a FPU, and one connection that provides a vertical conveyance to an intervention rig.
    Type: Grant
    Filed: April 10, 2008
    Date of Patent: May 3, 2011
    Assignee: Petroleo Brasileiro S.A. - Petrobras
    Inventors: Francisco Edward Roveri, Cezar Augusto Silva Paulo, Roberto Rodrigues, Renato Brandão Mansano, Carlos Alberto Giacomin Pereira
  • Patent number: 7934376
    Abstract: An assembly for the hydraulic actuation of safety equipment includes a hydraulic pump disposed between a fluid feed line and a supply line in fluid communication with the safety equipment. A pump valve in the supply line downstream of the hydraulic pump is adjustable between open and closed positions for providing hydraulic fluid to supply line. A fluid source communicates with a bypass line in fluid communication with the supply line. A bypass valve is disposed between the fluid source and the supply line and is lockable between open and closed positions for providing other hydraulic fluid to supply line.
    Type: Grant
    Filed: April 27, 2006
    Date of Patent: May 3, 2011
    Assignee: Cameron International Corporation
    Inventor: Klaus Biester
  • Patent number: 7934561
    Abstract: A depth compensated passive eave compensator comprises a first cylinder connected at its upper end to a vessel. A piston rod extends from a piston located within the first cylinder through the lower end thereof and is connected to subsea equipment. A second cylinder contains a compressed gas which maintains pressure beneath the piston of the first cylinder. The upper end of the first cylinder is connected to the upper end of a third cylinder having a piston mounted therein. A piston rod extending from the piston of third cylinder extends through the lower end thereof thereby applying the pressure of the sea to the piston of the third cylinder.
    Type: Grant
    Filed: April 8, 2008
    Date of Patent: May 3, 2011
    Assignee: InterMoor, Inc.
    Inventor: Matthew Jake Ormond
  • Patent number: 7934562
    Abstract: A hybrid process control system including electrical transmission of power to a sub-sea hydraulic power unit, which in turn provides hydraulic power for control of hydraulic actuators. A circulation system using small bore tubing in the umbilical cord in combination with a traditional topside hydraulic power unit provides for active control of hydraulic fluid quality with respect to contamination caused by the sub-sea hydraulic actuators, especially process gas from down hole safety valves. Thus, a more economical power transmission is achieved without reduction of fluid quality, which is essential to system integrity and reliability. Also, a significant enhancement of power transmission without a dramatic increase in the size of hydraulic supply and return lines is achieved. Fluid environmental issues are reduced to a negligible aspect.
    Type: Grant
    Filed: December 2, 2005
    Date of Patent: May 3, 2011
    Assignee: Vetco Gray Scandinavia AS
    Inventors: Tom Grimseth, Christian Borchgrevink
  • Patent number: 7921918
    Abstract: A rigless support for a downhole operation, such as cutting of an underwater casing in preparation for plug-and-abandonment. The unit has a movable base that can be positioned on a floating structure, such as a barge or a marine vessel and delivered to the site. A pair of piston rams support a swivel unit therebetween, with the swivel unit being driven by a hydraulic motor and driving a casing cutter.
    Type: Grant
    Filed: June 26, 2008
    Date of Patent: April 12, 2011
    Inventors: Charles Larue Bryant, Jr., David J. Ruttley
  • Patent number: 7921917
    Abstract: Methods for deploying a subsea blowout preventer stack system comprising a lower marine riser package, a blowout preventer stack with a first ram blowout preventer, and an additional blowout preventer package releasably coupled to the blowout preventer stack and comprising a second ram blowout preventer. The subsea blowout preventer stack assembly can be deployed by coupling a drilling riser to the lower marine riser package that is releasably connected to the blowout preventer stack. The lower marine riser package and blowout preventer stack are then toward a subsea wellhead and then landed on the additional blowout preventer package that is coupled to the subsea wellhead.
    Type: Grant
    Filed: June 6, 2008
    Date of Patent: April 12, 2011
    Assignee: Cameron International Corporation
    Inventors: Johnnie E. Kotrla, Melvyn F. Whitby, David J. McWhorter, Glenn J. Chiasson
  • Patent number: 7891429
    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 and a subsea control system. The subsea control system is connected via electrical jumper to an ROV's tether management system. The subsea control system is connected via hydraulic jumpers to a multipurpose fluid-injection skid and one or more hydraulic accumulation banks. A fail-safe disconnect assembly is utilized with respect to the electrical jumper in order to provide easy removal during a drive-off condition.
    Type: Grant
    Filed: February 9, 2006
    Date of Patent: February 22, 2011
    Inventors: Charles B. Boyce, William R. Bath
  • Publication number: 20100307768
    Abstract: A method of raising a tubular, comprising attaching a lifter to a tubular associated with a wellbore, and operating the lifter to transmit a downward force to a subterranean formation via a surface of the wellbore formed in the subterranean formation while also operating the lifter to transmit an upward force to the tubular. A lifter for lifting a tubular associated with a wellbore comprising a securing mechanism configured to restrict movement of the securing mechanism relative to an upper tubular portion, and a piston configured to be received within a lower tubular portion and configured to promote a seal between the piston and the lower tubular portion.
    Type: Application
    Filed: June 8, 2009
    Publication date: December 9, 2010
    Applicant: HALLIBURTON ENERGY SERVICES, INC.
    Inventor: Gavin J. Bell
  • Publication number: 20100276153
    Abstract: A valve, such as a ball valve, is assembled and carried by a running tool. The valve is actuated by an actuator that is triggered by the running tool, and thus opens and closes communication between the drill pipe and the volume below the running tool. An actuating cam is assembled below the running tool that interfaces the actuator. The actuating cam is threaded such that it travels axially as the drill pipe is turned. A profile on the actuating cam is timed with the function of the running tool and controls the action of the actuator such that the valve is open when the running tool function requires communication with the volume below the running tool and the valve is closed when the running tool needs to be pressurized.
    Type: Application
    Filed: April 30, 2009
    Publication date: November 4, 2010
    Applicant: Vetco Gray Inc.
    Inventors: Nicholas P. Gette, Gregory M. Dunn
  • Patent number: 7770649
    Abstract: A locking device for locking an exchangeable unit in an insertion opening of an associated housing, particular in maritime mineral oil or mineral gas extraction, comprises locking elements adjustable between an insertion opening and a locking position, wherein in its insertion direction the unit can be inserted into the insertion opening, and is locked in the locking position within the insertion opening and relative to the housing. The locking elements are formed as thread segments spaced apart by insertion gaps in the circumferential direction and arranged on the outer side of the unit and being aligned with the insertion opening, said thread segments being arranged in the insertion opening at a gap and being in thread engagement in the locking position.
    Type: Grant
    Filed: October 12, 2004
    Date of Patent: August 10, 2010
    Assignee: Cameron International Corporation
    Inventors: Klaus Biester, Norbert Lenz
  • Publication number: 20100181075
    Abstract: 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: Application
    Filed: March 23, 2010
    Publication date: July 22, 2010
    Inventor: Graeme E. Reynolds
  • Publication number: 20100147527
    Abstract: A subsea boosting cap system is disclosed. The system comprises an anchor assembly capable of attaching to the sea floor. The anchor assembly comprises a pump cavity capable of receiving a removable pump assembly. A valve system is attached to the anchor assembly. The valve system comprises an inlet flow path and an outlet flow path. A boosting cap covers the pump cavity. The boosting cap comprises a first flow path configured to provide fluid communication between the inlet flow path and the removable pump assembly. A second flow path provides fluid communication between the removable pump assembly and the outlet. A crossover flow path provides fluid communication between the inlet flow path and the outlet flow path, the crossover flow path bypassing the pump cavity.
    Type: Application
    Filed: December 10, 2009
    Publication date: June 17, 2010
    Inventor: PAULO CEZAR SILVA PAULO
  • Patent number: 7677320
    Abstract: A subsea well production system has a natural drive mode and a lift-assist mode using a submersible pump. The submersible pump can be installed while the well is live. The well system has a downhole safety valve in the production tubing. The operator closes the downhole safety valve and lowers an electrical submersible pump assembly into the production tubing. Once landed, the valve is opened and the pump assembly placed in operation.
    Type: Grant
    Filed: June 12, 2006
    Date of Patent: March 16, 2010
    Assignee: Baker Hughes Incorporated
    Inventors: Chris K. Shaw, Michael V. Smith
  • Patent number: 7614453
    Abstract: In accordance with certain embodiments, the present invention provides a connector for attaching to a multi-toothed profile on a wellhead features a tooth profile that staggers loading preferably starting at a loading surface furthest from the connector body sitting on the wellhead and moving toward the connector body. The staggered loading more evenly distributes stresses on the matching loading surfaces as compared to the result of using a tooth profile on the connector that nearly exactly matches the profile on the wellhead. The joint can then take advantage of an increased preload and exhibit improved stress characteristics when operating at high loading conditions.
    Type: Grant
    Filed: June 1, 2006
    Date of Patent: November 10, 2009
    Assignee: Cameron International Corporation
    Inventors: Michael W. Spiering, Maoye Sun, Paul D. Bunch, Eric D. Larson
  • Publication number: 20090266553
    Abstract: An apparatus for preventing seawater from penetrating into a compressor module during lowering to or retrieval from a compression plant on the seabed, with optional discharge of residual production fluids, as for instance hydrocarbons, from the compressor module prior to retrieval, wherein the compressor module comprises an electric motor (1) and a compressor (2) which are respectively connected via at least one shaft (8) and are arranged in a common pressure shell (3), an inlet pipe (5) and an outlet pipe (6) to and from the compressor module which respectively are provided with an isolation valve (7, 7?).
    Type: Application
    Filed: June 20, 2007
    Publication date: October 29, 2009
    Applicant: AKER KVAERNER SUBSEA AS
    Inventors: Hakon Skofteland, Kjell Olav Stinessen, Audun Grynning, Oyvind Rokne
  • Patent number: 7600569
    Abstract: A method and a device for installing a sub-sea riser for an offshore operation, between a base installation disposed on the sea bed and a sea installation protruding above the base installation. The sub-sea riser is provided with a first end and a second end. The method comprises the following stages in the following order: a) the first end of the riser is joined to the sea installation; b) the sub-sea riser is deployed; c) the second end of the riser is guided towards the base installation; d) the second end is coupled to the base installation by releasing the second end and the efforts of the recoil force exerted on the base installation are transferred; e) the second end and the base installation are connected to each other.
    Type: Grant
    Filed: August 27, 2004
    Date of Patent: October 13, 2009
    Assignee: Technip France
    Inventors: Sylvain Routeau, Ludwig Gross, Didier Renard
  • Publication number: 20090211762
    Abstract: 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: Application
    Filed: February 27, 2009
    Publication date: August 27, 2009
    Applicant: Vetco Gray Inc.
    Inventor: Robert K. Voss
  • Publication number: 20090025937
    Abstract: A technique facilitates intervention operations in a plurality of wells from an offshore fixed platform. A jacking frame is movably mounted on the offshore fixed platform to provide access to selected wells of the plurality of wells. The jacking frame is coupled to a translation system that enables horizontal movement of the jacking frame along the offshore fixed platform to better position the jacking frame for intervention in desired wells. One or more jib cranes are mounted to the jacking frame to lift or deploy equipment with respect to selected wells.
    Type: Application
    Filed: July 16, 2008
    Publication date: January 29, 2009
    Inventors: Larry Robinson, Gary Simmons
  • Publication number: 20090025938
    Abstract: The present invention regards a device designed for injection of fluids in a well bore, typically an offshore well bore for petroleum production and gas injection/gas lift system for fluid injection. The device comprises a outer hollow housing (1) with an internal body (2) moveable within the outer housing (1) with an internal bore (3) which in a first closed position is closed with a metal to metal seal system between the outer housing (1) and the internal body (2), which internal body (2) is operated by pressure differential across the internal body (2), where the internal body (2) is designed with slots (4) forming outlets of the internal bore (3) which in an open position of the device leads to the outside of the outer housing (1).
    Type: Application
    Filed: February 7, 2007
    Publication date: January 29, 2009
    Applicant: PETROLEUM TECHNOLOGY COMPANY AS
    Inventors: Magnar Tveiten, Oyvind Stokka, Erling Kleppa, Tom Norland
  • Patent number: 7451821
    Abstract: An offshore well drilling assembly includes a drilling facility or support platform for location at sea. A drilling platform connects to the support platform so the drilling platform is cantilevered from the support platform. The drilling platform extends from the support platform, for positioning over a subsea well. The well drilling assembly includes a staging platform for use in loading and unloading of wellhead equipment. The staging platform is mounted to the drilling platform. The staging platform moves along a side of the drilling platform in directions toward and away from the support platform to a distance over the sea. A method of conveying wellhead equipment uses the staging platform for conveying wellhead equipment between the support platform and a distance over the sea by moving the staging platform along the drilling platform.
    Type: Grant
    Filed: October 29, 2004
    Date of Patent: November 18, 2008
    Assignee: Saudi Arabian Oil Company
    Inventors: Omar A. Rashid, Robert J. Rawls
  • Patent number: 7419006
    Abstract: An apparatus and method for protecting wellheads of a fixed-leg drilling and production platform which provide an alternative from the shutting in of producing wells as currently required. The apparatus provides a structural barrier for the production process systems of the platform, shielding such systems from heavy objects which may be dropped in the course of rig mobilization and skidding procedures. A method of installing an embodiment of the apparatus allows the barrier to be installed without shutting in the production wells.
    Type: Grant
    Filed: March 24, 2005
    Date of Patent: September 2, 2008
    Assignee: WZI, Inc.
    Inventor: James E. Armstrong
  • Publication number: 20080202761
    Abstract: The invention covers the method of supplying services to a device such as a Subsea Intervention Tree and Retainer Valve using conduits routed through a tubing Hanger. The method of this invention provides control of equipment sitting within the BOP stack and/or marine riser using control systems located external to the Marine riser. This removes the need for a costly umbilical/conduit to be run alongside the casing or tubing string within the marine riser, thereby reducing cost and risk of damage during deployment of the string. Running time will be significantly reduced saving valuable rig time. Also, in deeper waters complex Electro/Hydraulic or MUX control systems traditionally run within the Marine riser and/or the BOP stack as a part of the Landing string can be replaced by a local control system located outside the Marine riser on or around the Production Tree.
    Type: Application
    Filed: September 20, 2006
    Publication date: August 28, 2008
    Inventor: Ross John Trewhella
  • Patent number: 7387166
    Abstract: An electrically operated actuation tool for a subsea completion system component having at least one hydraulically actuatable mechanism comprises an electric motor, a hydraulic pump which is driven by the motor and at least one hydraulic line which communicates between the hydraulic pump and a corresponding hydraulic conduit that is fluidly connected to the mechanism. In this manner, the motor drives the hydraulic pump to generate hydraulic pressure which is used to actuate the mechanism.
    Type: Grant
    Filed: July 6, 2006
    Date of Patent: June 17, 2008
    Assignee: FMC Technologies, Inc.
    Inventor: Christopher D. Bartlett
  • Patent number: 7360601
    Abstract: A method of installing an electrical pump assembly in a subsea wellhead member avoids having to run the pump assembly through the wellhead member after removing the wear bushing. The operator first lowers the pump assembly on a string of tubing at least through the wear bushing while deploying the power cable alongside the tubing. He then connects a retrieval tool to the tubing, inserts the power cable into a slot in a side wall of the retrieval tool, and lowers the retrieval tool. After engaging the wear bushing, the operator retrieves the wear bushing while taking up the power cable. The operator connects a tubing hanger to the tubing, and lowers the pump assembly again until the tubing hanger lands in the wellhead member.
    Type: Grant
    Filed: February 28, 2005
    Date of Patent: April 22, 2008
    Assignee: Vetco Gray Inc.
    Inventor: Boon Sun See
  • Publication number: 20080035327
    Abstract: 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: Application
    Filed: July 30, 2007
    Publication date: February 14, 2008
    Inventor: Mick Fowkes
  • Patent number: 7264057
    Abstract: A method and system of subsea intervention comprises lowering one or more assemblies of intervention equipment into the sea. Underwater marine units (such as remote operated vehicles or small submarines) may be employed to connect the assemblies to each other and to the subsea wellhead equipment. The subsea wellhead equipment includes a carrier line spool (e.g., coiled tubing spool, wireline spool, slickline spool) and equipment to inject a carrier line from the carrier line spool into the subsea well. The carrier line spool can be located underwater, such as on the sea floor or positioned above the subsea wellhead equipment.
    Type: Grant
    Filed: April 28, 2004
    Date of Patent: September 4, 2007
    Assignee: Schlumberger Technology Corporation
    Inventors: Gary L. Rytlewski, Thomas H. Zimmerman, Peter A. Goode, Ashley C. Kishino, John A. Kerr, Alan Christie
  • Patent number: 7234527
    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: Grant
    Filed: July 3, 2002
    Date of Patent: June 26, 2007
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Harold W. Nivens, Curtis E. Wendler
  • Patent number: 7219737
    Abstract: A subsea well pumping system for installing and retrieving a hydraulically actuated down hole pump employed within the tubing suspended within casing extending from above a seabed, the system having a wellhead assembly affixed to the upper end of the casing for supporting the tubing and including provision for hydraulically communicating with the interior of the casing and the tubing, a remotely controllable main valve affixed to the tubing at its upper end, a tubular pump lubricator affixed at its lower end to the main valve, a removable pump latch sealably closing the pump lubricator at its upper end and having a pump catcher extending downwardly therefrom for removably latching onto the pump and a system for guiding the pump suspended form the pump catcher into the pump lubricator whereby the pump can be moved downwardly in the tubing into a pumping position by fluid injected into the tubing and can be moved upwardly in the tubing into a retrievable position for grasping by the pump catcher by fluid inject
    Type: Grant
    Filed: September 21, 2004
    Date of Patent: May 22, 2007
    Inventors: Melvin E. Kelly, Christopher H. Jenkins
  • Patent number: 7216714
    Abstract: 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. It is emphasized that this abstract is provided to comply with the rules requiring an abstract which will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure. It is submitted with the understanding that it will not be used to interpret or limit the scope of meaning of the claims.
    Type: Grant
    Filed: August 17, 2005
    Date of Patent: May 15, 2007
    Assignee: Oceaneering International, Inc.
    Inventor: Graeme E. Reynolds
  • Patent number: 7216715
    Abstract: 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: Grant
    Filed: May 5, 2006
    Date of Patent: May 15, 2007
    Assignee: Oceaneering International, Inc.
    Inventor: Graeme E. Reynolds
  • Patent number: 7216699
    Abstract: An inner tubular member of a subsea wellhead assembly carries a locking member that moves between a locked and unlocked positions lands within an outer tubular member having a grooved profile in its bore. The inner tubular member joins to a portion of the conductor casing extending from a low pressure wellhead housing above the mudline of the seafloor. In the locked position, the locking member engages the grooved profile on the outer tubular member to connect the outer tubular member and inner tubular member. The inner tubular member also carries a hydraulically actuated, axially moveable locking sleeve that slidingly engages the locking member to move the locking member between the locked and unlocked positions. An ROV supplies hydraulic fluid through an ROV port to actuate the locking sleeve.
    Type: Grant
    Filed: December 16, 2003
    Date of Patent: May 15, 2007
    Assignee: Vetco Gray Inc.
    Inventors: John Edward Nelson, James A. Gariepy
  • Patent number: 7152682
    Abstract: A subsea process assembly for separating a multiphase flow, the assembly comprising: an inlet for a multiphase medium; a pressure reducing means for reducing the pressure of the multiphase flow from the inlet and creating a source of energy; a multiphase separator for separating the multiphase input into individual phases; and a pumping system for, in use, pumping at least one of the desired individual phases to a delivery point by utilizing at least some of the energy from the source of energy.
    Type: Grant
    Filed: March 24, 2003
    Date of Patent: December 26, 2006
    Assignee: Cameron International Corporation
    Inventor: Hans Paul Hopper
  • Patent number: 7024081
    Abstract: Fiber optic cables suitable for use in harsh environments such as down hole oil and gas well applications and methods for fabricating the same have been provided. In one embodiment, an optic cable suitable for down hole oil field applications comprises one or more optical fibers disposed in an inner tube and a corrosion resistant metal outer tube disposed over the inner tube, where the inner and outer tubes make intermittent contact. In another embodiment, an optic cable suitable for down hole oil field applications comprise one or more optical fibers disposed in a polymer tube having fins extending therefrom.
    Type: Grant
    Filed: April 24, 2003
    Date of Patent: April 4, 2006
    Assignee: Weatherford/Lamb, Inc.
    Inventors: Edward M. Dowd, Milton E. Ives, Jr.
  • Patent number: 6832874
    Abstract: To install a modular seabed processing system (1) on a seabed, a monopile foundation (3) is first lowered down and driven into the seabed. A docking unit (4) is lowered towards the installed foundation (3) so that a mating clamp system (6) mounted on the docking unit is aligned with a spigot (5) on the foundation. The clamp system then clamps the spigot to fix the docking unit onto the foundation. Flowlines (2) and an electrical power connector plug (18) are connected to the docking unit. A first retrievable substantially autonomous module (8) is lowered and connected to the docking unit (4) by a multi-bored connector (10, 11) and the plug (18) on the docking unit is engaged by a corresponding socket (17) on the module. Isolation valves (14, 16) in the docking unit and module are opened so that the module (8) is able to act on fluid received from the flowlines (2) via the multi-bored connector (10, 11).
    Type: Grant
    Filed: February 18, 2003
    Date of Patent: December 21, 2004
    Assignee: Alpha Thames Ltd.
    Inventors: David Eric Appleford, Brian William Lane
  • Patent number: 6763889
    Abstract: A method and system of subsea intervention comprises lowering one or more assemblies of intervention equipment into the sea. Underwater marine units (such as remote operated vehicles or small submarines) may be employed to connect the assemblies to each other and to the subsea wellhead equipment. The subsea wellhead equipment includes a carrier line spool (e.g., coiled tubing spool, wireline spool, slickline spool) and equipment to inject a carrier line from the carrier line spool into the subsea well. The carrier line spool can be located underwater, such as on the sea floor or positioned above the subsea wellhead equipment. The carrier line spool can also be located on a sea vessel. Also, to switch tools, a carousel system having multiple chambers containing different types of tools can be used.
    Type: Grant
    Filed: August 2, 2001
    Date of Patent: July 20, 2004
    Assignee: Schlumberger Technology Corporation
    Inventors: Gary L. Rytlewski, Thomas H. Zimmerman, Peter A. Goode, Ashley C. Kishino, John A. Kerr, Alan R. Christie
  • Patent number: 6745840
    Abstract: The disclosure describes a spoolable compliant guide, a system including a spoolable compliant guide and injector and methods for using the compliant guide, where the guide is designed to connect at one end to the injector and at its other end to a remote installation having a seal and to allow coiled tubing to be inserted into the installation through the seal. Because the guide permits a substantial distance to exist between the injector and the installation seal and functions as a crimp or band resistor for the coiled tubing, the guide enables the injector to be conveniently positioned remote from the installation such as a wellhead and assumes a compliant shape between the injector and the installation allowing dynamic relative movement between them without the use of heave compensators. Thus, for subsea installations, the injector, its control system and coiled tubing reels can all be located on the water's surface for ease of access and maintenance.
    Type: Grant
    Filed: October 24, 2001
    Date of Patent: June 8, 2004
    Inventor: Colin Stuart Headworth
  • Patent number: 6725936
    Abstract: An underwater well system in which an initially vertical drilling riser conduit is fixed by a template at the seabed in a non-vertical orientation. Drilling is carried out through wellhead in the template which also includes a valve tree allowing the production fluid to be brought to the surface along a line separate from the drilling riser conduit. The template may be a junction template allowing several wells to be drilled from a single template, or allowing the template to be connected by one or more drilling conduits to further templates such that a wide area of the seabed can be covered for a single drilling riser conduit.
    Type: Grant
    Filed: October 28, 2002
    Date of Patent: April 27, 2004
    Assignee: Cooper Cameron Corporation
    Inventor: Hans Paul Hopper
  • Publication number: 20030180096
    Abstract: To install a modular seabed processing system (1) on a seabed, a monopile foundation (3) is first lowered down and driven in to the seabed. A docking unit (4) is lowered towards the installed foundation (3) so that a mating clamp system (6) mounted on the docking unit is aligned with a spigot (5) on the foundation. The clamp system then clamps the spigot to fix the docking unit onto the foundation. Flowlines (2) and an electrical power connector plug (18) are connected to the docking unit. A first retrievable substantially autonomous module (8) is lowered and connected to the docking unit (4) by a multi-bored connector (10, 11) and the plug (18) on the docking unit is engaged by a corresponding socket (17) on the module. Isolation valves (14, 16) in the docking unit and module are opened so that the module (8) is able to act on fluid received from the flowlines (2) via the multi-bored connector (10, 11).
    Type: Application
    Filed: February 18, 2003
    Publication date: September 25, 2003
    Inventors: David Eric Appleford, Brian William Lane
  • Publication number: 20030079881
    Abstract: The well intervention system of the invention is a novel 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. The subject invention also includes an improved 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.
    Type: Application
    Filed: November 5, 2002
    Publication date: May 1, 2003
    Applicant: EXXONMOBIL UPSTREAM RESEARCH COMPANY
    Inventor: Jeff H. Moss
  • Patent number: 6484806
    Abstract: An apparatus for controlling a blowout preventer stack. The apparatus comprises a control pod having a plurality of direct operated solenoid valves in electronic communication with a surface controller through one or more dedicated electronic control wires. The solenoids translate electronic control signals from the controller into hydraulic control signals that are in communication with a hydraulically operated pilot valve to cause delivery of hydraulic fluid from a power fluid source to a critical function of the blowout preventer stack (i.e., closing of a blowout preventer). The system also provides a plurality of hydraulically operated pilot valves that deliver hydraulic fluid from a power fluid source to a non-critical function of the blowout preventer stack upon receiving a hydraulic control signal directly from the controller through the umbilical.
    Type: Grant
    Filed: January 30, 2001
    Date of Patent: November 26, 2002
    Assignees: Atwood Oceanics, Inc., Oceaneering
    Inventors: Mark Childers, Michael Cunningham
  • Patent number: 6481504
    Abstract: A flowline connector having a first connector portion for mounting on a first piece of subsea equipment, such as a wellhead. A second connector portion of the flowline connector is attached to an end portion of a flowline. Each connector portion has a respective guide interengageable by lowering the second connector portion, on the end portion of the flowline, into the first connector portion. The guides allow the second connector portion to pivot relative to the first connector portion to bring the first connector portion and the second connector portion into axial alignment for make-up of a fluid tight connection therebetween. The second connector portion has a subsea equipment package, for example chokes, gas/water separators, gas liquifiers, pumps and the like, for connection to the first piece of the subsea equipment.
    Type: Grant
    Filed: June 29, 2000
    Date of Patent: November 19, 2002
    Assignee: FMC Corporation
    Inventor: Nicholas Gatherar
  • Patent number: 6435279
    Abstract: A method and apparatus for sampling fluids from an undersea wellbore comprising a self-propelled underwater vehicle and a collection and storage device; so that samples may be recovered directly from the wellbore and subsequently analyzed to determine the characteristics of the oil produced from separate wells.
    Type: Grant
    Filed: April 10, 2000
    Date of Patent: August 20, 2002
    Assignee: Halliburton Energy Services, Inc.
    Inventors: David Charles Howe, Kevin Fraser Robb
  • Patent number: 6422316
    Abstract: A mounting system for supporting elongate, metallic structural members used in offshore applications and subject to dynamic forces comprising a support assembly having a socket that at least partially encircles the structural member, an attachment for securing the support assembly to a positioned structure, such as an offshore platform, and a sleeve received in the socket, the sleeve being disposed in surrounding relationship to the structural member and comprising an electrically nonconductive, fiber-reinforced polymer composite.
    Type: Grant
    Filed: December 8, 2000
    Date of Patent: July 23, 2002
    Assignee: RTI Energy Systems, Inc.
    Inventors: Ronald W. Schutz, Carl F. G. Baxter