With Valve On Cap Or Head Patents (Class 166/97.1)
  • Patent number: 9181996
    Abstract: A backspin reducing device for reducing an amount or a rate of backspin of a rod string when lifting the rotor apart from the stator of an oil or gas downhole progressive cavity pump. The backspin reducing device includes a substantially cylindrical housing having one or more threaded pin receptacles holding respective threaded pins in threaded engagement around a polished rod portion of the rod string of the progressive cavity pump. Turning threaded pins in their respective threaded pin receptacles causes the interior ends of the threaded pins to move towards or away from the polished rod in the center of the housing. Attached to the interior end of each threaded pin is a friction roller.
    Type: Grant
    Filed: August 29, 2013
    Date of Patent: November 10, 2015
    Assignee: Titus Tools Inc.
    Inventors: Tracy Earl Klotz, Dwayne Darryl Commandeur, Frank Jesse Lay
  • Patent number: 9157291
    Abstract: The present invention relates to a device and to a method for blocking the outflow of a pressurized fluid from an underwater well, in particular, for blocking the outflow of crude oil and/or of natural gas, for carrying out an operation of closure of the well. In particular, the invention relates to a device and to a method for quickly stopping the flow and closing the well in case of incident and/or in case of fault of emergency shut-off devices of the underwater well, such as “blowout preventer” (“BOP”) systems, in order to reduce harm to the environment and economic losses due to fluid outflow from the well.
    Type: Grant
    Filed: June 21, 2011
    Date of Patent: October 13, 2015
    Assignee: SIME SRL
    Inventors: Stefano Favilli, Matteo Bertolini, Giacomo Iarrusso
  • Publication number: 20150034338
    Abstract: A wellhead plug and a method for using a wellhead plug are presented. The ahead plug includes a plug body having at least a locking module, multiple sealing members, and a threaded connection tool. The wellhead plug according to the present disclosure offers multiple advantages over existing technologies. For example, the device may serve duplex roles as a wellhead pressure plug and/or a connection test tool. The device may, for example, serve as a blowout preventer (BOP) connection test tool, as well as an emergency drill pipe hang off tool (EDPHOT). This Abstracts submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims.
    Type: Application
    Filed: July 29, 2014
    Publication date: February 5, 2015
    Inventors: Ah Chai LIM, Chamal Jayanath SENEVIRATNE, Kyaw THET, Kim Kok GOI, Nur Adlina Binte SUHAIMI, Sim Guan TEO
  • Patent number: 8944159
    Abstract: A system, in certain embodiments, includes a horizontal fracturing tree. The horizontal fracturing tree includes a first hydraulic fracturing bore configured to flow a first fluid, wherein the first hydraulic fracturing bore extends along a first horizontal axis, and the first horizontal axis is generally perpendicular to a vertical axis of a wellhead.
    Type: Grant
    Filed: August 5, 2011
    Date of Patent: February 3, 2015
    Assignee: Cameron International Corporation
    Inventors: Kirk Paul Guidry, Stefan Marek Radwanski
  • Publication number: 20150027730
    Abstract: The present disclosure relates to providing a hub coupled into a production tree, manifold, or other equipment, and a base module that is attachable to and retrievable from the hub. The base module may be reconfigurable. The base module may be configured to receive other modules that are reconfigurable, wherein the other modules are retrievable from the base module. The hub provides a dedicated space or support at or near the production tree or equipment for using the base module. An interface is provided between the base module and the production tree. A fluid conduit provides a fluid path across or through the interface. The hub may be part of the interface such that the module can fluidly couple to the fluid conduit and the production tree across the interface via the hub.
    Type: Application
    Filed: February 21, 2013
    Publication date: January 29, 2015
    Applicant: Cameron International Corporation
    Inventors: Graham Hall, Graham Shee, Craig McDonald
  • Patent number: 8833393
    Abstract: A hydraulic connector (14) attaches a valve chamber (16) to a flow pipe (P) using a hydraulic clamp (20) to grab the pipe (P) or a flange (F). The valve chamber (16) contains a primary hydraulic ram (26) to telescopically extend a primary seal (28) on the ram (26) to close or open the outlet ports (22) by moving the primary seal (28) to permit flow through valve up flow tubes (34) to a riser (R). Outlet ports (22) in the cap valve (12), or an intermittent pipe (18), permit unrestricted flow while the connector (14) is being installed.
    Type: Grant
    Filed: September 2, 2011
    Date of Patent: September 16, 2014
    Inventor: Charles J. Adams
  • Patent number: 8820411
    Abstract: A deepwater blow out throttling apparatus and method. The apparatus is sized to reach an equilibrium between the force of the oil flow against the equipment that constitute the apparatus during its assembly and the forces available from the ROV and the drill ship and connexion pipe to hold the pieces in position for assembly. This solution is applicable to all wells and requires sizing the diffusion transition spool and the throttling valves such that the forces of the flow of the free discharging oil can be overcome by the forces available from the ROV and drill ship. Downward loading from the drill ship during the throttling is applied as throttling generates forces and vibration that can exceed the physical strength of the riser piping and connections. Slow closing of the throttling device must be assured to avoid shocking (or water hammering) the oil well installation.
    Type: Grant
    Filed: June 9, 2011
    Date of Patent: September 2, 2014
    Assignee: Organoworld Inc.
    Inventor: Frédérick Churchill
  • Publication number: 20140182863
    Abstract: A system in some embodiments includes a back pressure valve. The back pressure valve includes a body, a plunger disposed internal to the body, and a friction member disposed about the exterior of the body. The friction member is configured to expand radially to contact an internal surface of a bore. In some embodiments, a method includes disposing a back pressure valve into a straight bore and expanding a friction member of the back pressure valve radially into contact with an internal surface of the straight bore.
    Type: Application
    Filed: December 30, 2013
    Publication date: July 3, 2014
    Applicant: Cameron International Corporation
    Inventors: Dennis P. Nguyen, Maria R. Contreras
  • Publication number: 20140151063
    Abstract: Systems and methods for performing operations on a well include first and second flow control devices positioned between upper and lower sections of a conduit. An upper connector assembly engaged with the upper section includes connectors adapted for connection to a chemical stimulation device, a blowout preventer, or other well intervention apparatuses. A lower connector assembly engaged with the lower section includes connectors adapted for connection to a chemical stimulation device, a running tool, wellbore conduits, or other well intervention apparatuses. The two connector assemblies, above and below the flow control devices, enable sequential or simultaneous operations to be performed, and can enable operations to be performed independent of the state of the flow control devices.
    Type: Application
    Filed: December 5, 2012
    Publication date: June 5, 2014
    Inventor: David WRIGHT
  • Patent number: 8739883
    Abstract: Internal tree cap (201) (ITC) adapted to be installed in the bore of a subsea well unit (301) or to an internal tubular element (303) of the same, comprising a locking element (209) for releasably locking the internal tree cap (201) to said subsea well unit (301) or internal tubular element (303). The ITC further comprises a fluid channel (215) extending through a fluid barrier between the lower and upper part of the internal tree cap (201), which fluid channel (215) is blocked by a burst element (217) adapted to break and open for fluid flow through the fluid channel (215) when exposed to a predetermined pressure difference over the burst element (217). The invention also relates to an ITC running tool (101) and a locking mechanism (117) for supporting the ITC in the tool.
    Type: Grant
    Filed: April 28, 2009
    Date of Patent: June 3, 2014
    Assignee: Aker Subsea AS
    Inventors: Lasse E. Aarnes, Andre M. Smith
  • Publication number: 20140138082
    Abstract: A seal assembly for use in a valve that maintains a seal during operational excursions of high temperature, such as during a fire. The seal assembly includes a eutectic material that retains an energizing element in place during normal conditions, which in turn keeps a secondary seal spaced axially away from a sealing position. During high temperature excursions, the eutectic material degrades and releases the energizing element. When released, the energizing element energizes a secondary seal that is in an annular space between a valve stem and valve housing.
    Type: Application
    Filed: November 14, 2013
    Publication date: May 22, 2014
    Applicant: Vetco Gray Inc.
    Inventors: Sergio Felipe Meyberg, Mark Anthony Viator, David Daniel Comeaux
  • Patent number: 8672038
    Abstract: A retrievable bridge is provided which mounts to the top of a subsea tree to provide fluid communication between the production line of the subsea tree and a production flowline. The retrievable bridge mounts to the top of the subsea tree and preferably connects to a vertically oriented pipe of the production flowline. The retrievable bridge can be utilized to carry wear items such as chokes, subsea control modules, and flow meters which may require maintenance more often than other components of the subsea tree. By mounting these items along the flow passageway in the retrievable bridge the components are securely mounted and still available for maintenance/replacement without the need to remove the entire tree. In one embodiment, Intervention into the well is available without removing the retrievable bridge.
    Type: Grant
    Filed: January 28, 2011
    Date of Patent: March 18, 2014
    Assignee: Magnum Subsea Systems PTE Ltd.
    Inventors: Hoon Kiang Tan, Kim Kok Goi, Patrick Joseph Hyde, Peter Ernest Page
  • Publication number: 20140041861
    Abstract: A system useful for monitoring or controlling the back pressure of fluid in a wellbore is disclosed. The system may include: a choke assembly including: a housing having an inlet, an outlet, and a bore; a choke member disposed in the bore for controlling a flow of a fluid from the inlet to the outlet, and a rod coupled to the choke member and extending through the housing; a cylinder including: a housing having an axial bore; a piston, directly or indirectly coupled to the rod, disposed in the axial bore and separating the axial bore into a first chamber and a second chamber; a position indicating device fluidly coupled to the second chamber, wherein a change in volume of fluid in the second chamber causes a corresponding change in volume of fluid in the position indicating device, thereby indicating a change in the position of the choke member.
    Type: Application
    Filed: July 15, 2013
    Publication date: February 13, 2014
    Applicant: M-I L.L.C.
    Inventor: Christopher D. Nicholson
  • Patent number: 8644592
    Abstract: A method for determining a position of a fluid discharge in an underwater environment, the method including: collecting data relating to an underwater area through at least two acoustic sensors; filtering and processing the data collected to identify the presence of the discharged fluid and the underwater area involved; forming a single stereoscopic image by combining the plurality of single three-dimensional images; and estimating the position of the fluid discharge on the basis of the stereoscopic image thus obtained.
    Type: Grant
    Filed: April 6, 2009
    Date of Patent: February 4, 2014
    Assignee: ENI S.p.A.
    Inventors: Eliana De Marchi, Paolo Ferrara, Roberto Ferrario, Roberto Finotello
  • Patent number: 8636058
    Abstract: A system includes a back pressure valve. The back pressure valve includes a body, a plunger disposed internal to the body, and a friction member disposed about the exterior of the body. The friction member is configured to expand radially to contact an internal surface of a bore. A method includes disposing a back pressure valve into a straight bore and expanding a friction member of the back pressure valve radially into contact with an internal surface of the straight bore.
    Type: Grant
    Filed: March 19, 2009
    Date of Patent: January 28, 2014
    Assignee: Cameron International Corporation
    Inventors: Dennis P. Nguyen, Maria R. Contreras
  • Patent number: 8622121
    Abstract: A reinforced wellhead member for use during fracing operations. The wellhead member is preloaded at a flange section by creating compressive stresses via a ring that interacts with a tightening nut on a bolt. The bolt is rigidly attached to an adapter which may also be modified to create stresses on the flange of the wellhead member. The induced stresses counter the tensile stresses experienced by the flange during fracing operations, allowing a standard wellhead member to be utilized.
    Type: Grant
    Filed: February 10, 2011
    Date of Patent: January 7, 2014
    Assignee: Vetco Gray Inc.
    Inventors: Mahesha Udipi, Alfredo Olvera, Jim Hwang, Jean Brunjes, Eugene A. Borak, Jr.
  • Publication number: 20140000907
    Abstract: A valve assembly for use in regulating a fracturing fluid that includes an actuating stem for actuating a gate, a balancing stem, and a backseat on the stem that defines a backseat seal when urged against a profile in the valve assembly. The backseat seal is energized by applying a force to an end of the balancing stem. An end of the balancing stem is enclosed within a plenum, so that the force on an end of the balancing stem can be applied by pressurizing the plenum. The assembly can be on an opposite side of the valve body/bonnet to create a backseat seal on a balancing stem/bonnet to allow changing the stem packing on the balance stem side while maintaining pressure integrity.
    Type: Application
    Filed: June 28, 2012
    Publication date: January 2, 2014
    Applicant: VETCO GRAY INC.
    Inventors: Alfred Olvera, Mahesha Udipi, Mark A. Viator, Jim Hwang
  • Publication number: 20130299162
    Abstract: The present invention provides a check valve comprising a valve housing (1,2), a substantially circular flapper (3), a valve seat (16) for the flapper (3), an expandable chamber (11) in fluid contact with a connecting port (8) for hydraulics fluid, and a piston (4) having a first and a second end, the flapper comprises a first (19) and a second (18) connection point and is pivotably connected at the first connection point (19), said flapper is capable of pivoting between a closed position in close contact with the valve seat (16) and an open position which allows fluid to flow through the valve, the piston (4) is in contact with the expandable chamber (11) and a pre-stressed compressible device (15), said piston (4) pivotably connected at the first end to the flapper (3) via the second connection point (18), wherein the compressible device (15) can move the piston (4) in a direction towards the valve seat (16), and that hydraulics fluid can move the piston (4) in a direction away from the valve seat when suff
    Type: Application
    Filed: January 25, 2012
    Publication date: November 14, 2013
    Applicant: TS INNOVATION AS
    Inventor: Terje Morten Soltvedt
  • Patent number: 8555980
    Abstract: A blowout containment system is permanently positioned on the wellhead. The blowout containment system is relatively inexpensive, is always available and in place, it does not interfere with normal drilling operations, will capture all of the oil and gas emitted by the blowout, does not require special or unique sea surface or underwater apparatus or vessels, does not have any operational requirements that are different than those which drilling crews normally use and are already familiar, and is activated the using actions are similar to those used by drilling crews for well drilling and completion.
    Type: Grant
    Filed: June 9, 2011
    Date of Patent: October 15, 2013
    Inventor: John Powell
  • Publication number: 20130175055
    Abstract: Sealing mechanisms are provided. In one embodiment, a system includes a connector configured to couple one or more flow-control valves to equipment installed at a well and an isolation sleeve configured to be retained by the connector. The isolation sleeve may include a seal and a hydraulically actuated piston disposed adjacent one another about a body of the isolation sleeve such that actuation of the piston engages the seal. The isolation sleeve may also include a mechanically driven actuator ring, where the actuator ring energizes a seal against the bore of a tubing hanger. Additional systems, devices, and methods are also disclosed.
    Type: Application
    Filed: July 4, 2012
    Publication date: July 11, 2013
    Applicant: CAMERON INTERNATIONAL CORPORATION
    Inventors: Brian Hart, Cameron J. Berry, Dennis Harwood
  • Publication number: 20130175054
    Abstract: A sealing mechanism is provided. In one embodiment, a system includes a connector configured to couple one or more flow-control valves to equipment installed at a well and an isolation sleeve configured to be retained by the connector. The isolation sleeve may include a seal and a hydraulically actuated piston disposed adjacent one another about a body of the isolation sleeve such that actuation of the piston engages the seal. Additional systems, devices, and methods are also disclosed.
    Type: Application
    Filed: January 6, 2012
    Publication date: July 11, 2013
    Applicant: CAMERON INTERNATIONAL CORPORATION
    Inventors: Brian Hart, Cameron J. Berry
  • Patent number: 8322437
    Abstract: A method of, and system for, collecting and controlling hydrocarbons leaking from offshore sea bottom environments entail providing a concrete containment barrier and catenary gasket around the leak source, pumping concrete onto the catenary gasket, opening ports and valves in a containment vessel while it is positioned over the leak source, at least partially embedding the containment vessel in the pumped concrete, closing the ports and valves to capture leaking fluids, and communicating the fluids to the surface for further processing. The modular containment barrier may be placed around an existing or potential well site, or an operating well, abandoned well or sea bottom fissure to facilitate implementation of the method in the event of a leak.
    Type: Grant
    Filed: June 22, 2011
    Date of Patent: December 4, 2012
    Inventor: Arden L. Brey
  • Publication number: 20120175103
    Abstract: 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: Application
    Filed: February 27, 2012
    Publication date: July 12, 2012
    Applicant: CAMERON INTERNATIONAL CORPORATION
    Inventors: Ian Donald, John Reid
  • Patent number: 8109330
    Abstract: An angled or inline choke for flowing drilling fluid to a choke and kill manifold, wherein the choke has a body with a bore, a connection can be sealed to the body and can have a connection bore in communication with the bore. A locking plate can index the connection to the body. The choke can have a cavity with a piston. A port can be in communication with the cavity to provide a hydraulic fluid to the piston. A choke bean in the bore can flow drilling fluid to the choke and kill manifold. A tip can connect to the choke bean with a rod. When the hydraulic fluid passes into the port, the piston can move within the bore and compress a choke element around the tip to cause restriction of the drilling fluid, enabling for control of a pressure of the drilling fluid.
    Type: Grant
    Filed: May 27, 2011
    Date of Patent: February 7, 2012
    Inventor: James Otis Miller
  • Publication number: 20120024536
    Abstract: A pressure relief device is used to relieve pressure in a void within a wellhead housing. In one embodiment, the pressure relief device includes a plunger having a stepped plug, wherein the plug can be fully open to allow flow from the void, restricted to allow a predetermined flow to relieve pressure, or closed to prevent flow from the void. In another embodiment, the pressure relief device includes a vacuum puller that creates negative pressure in a vessel. As fluid in the void expands, it is able to enter the space formerly occupied by the plunger. In yet another embodiment, a rupture disc is used to prevent fluid from flowing from the void, through a passage, to the wellbore. If pressure in the void exceeds a predetermined value, the rupture disc yields and allows the trapped fluid to flow to the wellbore.
    Type: Application
    Filed: July 29, 2010
    Publication date: February 2, 2012
    Applicant: VETCO GRAY INC.
    Inventors: Michael J. Given, Neil J. Scott, William D. Munro
  • Patent number: 8016030
    Abstract: An apparatus and method for containing oil from a deep water (greater than 1,000 meters) oil well is disclosed herein. The apparatus has an anchor section, a plurality of riser sections, an upper section and a flow tube. A pressure within the apparatus is equal to a pressure outside of the apparatus to prevent collapse of the apparatus, and to prevent crystallization. Oil is suctioned from the interior of the apparatus through the flow tube to a surface of the ocean.
    Type: Grant
    Filed: September 2, 2010
    Date of Patent: September 13, 2011
    Assignee: triumUSA, Inc.
    Inventor: Jose Jorge Prado Garcia
  • Patent number: 7987903
    Abstract: An apparatus and method for containing oil from a deep water (greater than 1,000 meters) oil well is disclosed herein. The apparatus has an anchor section, a plurality of riser sections, an upper section and a flow tube. A pressure within the apparatus is equal to a pressure outside of the apparatus to prevent collapse of the apparatus, and to prevent crystallization. Oil is suctioned from the interior of the apparatus through the flow tube to a surface of the ocean.
    Type: Grant
    Filed: December 30, 2010
    Date of Patent: August 2, 2011
    Assignee: triumUSA Inc.
    Inventor: Jose Jorge Prado Garcia
  • Patent number: 7934550
    Abstract: A wellhead assembly for an injection tubing string is provided which allows a master valve to be closed without damaging the injection tubing string while still allowing for the use of a back pressure valve to isolate the tree. Wellhead assemblies and related methods of the present invention include a flange adapted to be connected between a wellhead and a Christmas tree. The assembly also includes a mandrel adapted to being inserted into the longitudinal bore of the flange, the mandrel having a port for communicating with an injection port which extends radially through the flange. The assembly further includes a hanger adapted to connect to the upper end of the injection string, wherein the hanger is further adapted to land in the longitudinal bore of the mandrel. The hanger includes a communication passageway for facilitating fluid communication between the port of the mandrel and the injection tubing string.
    Type: Grant
    Filed: January 10, 2008
    Date of Patent: May 3, 2011
    Assignee: BJ Services Company, U.S.A.
    Inventors: Jeffrey L. Bolding, Blane Cole, Thomas G. Hill, Jr.
  • Patent number: 7909103
    Abstract: A subsea wellhead assembly has a tubing hanger landed in a wellhead housing. A spool lands on the wellhead housing and has a bore with a laterally extending production flow outlet. A tree cap having an axially extending flow passage and a laterally extending production flow outlet lands within the bore of the spool. Upper and lower seals on the tree cap seal between the tree cap and the bore of the spool above and below the production flow outlet of the spool. An isolation tube on a lower end of the tree cap sealingly engages the production flow passage of the tubing hanger. The tree cap may be ran with the spool as an assembly and retrieved from the spool for workover operations.
    Type: Grant
    Filed: April 19, 2007
    Date of Patent: March 22, 2011
    Assignee: VetcoGray Inc.
    Inventor: Stephen P. Fenton
  • Patent number: 7621338
    Abstract: A wellhead assembly includes a tree cap having a production mandrel extending down into a production passage of a Christmas tree to form a seal. The tree has an annulus bore and an annular cavity at the upper end of the tree surrounding the upper ends of the production and annulus bore. A communication gallery leads between the annulus bore and the cavity. The tree cap also includes an annular sealing member that enters the cavity for sealing a communication gallery.
    Type: Grant
    Filed: July 27, 2007
    Date of Patent: November 24, 2009
    Assignee: Vetco Gray Inc.
    Inventors: Michael A. Wenham, Alistair D. Crozier
  • Patent number: 7621340
    Abstract: The invention describes a system for capping an abandoned well having production casing and surface casing. The system enables the effective sealing of the production casing volume from the surface casing volume such that any gases leaking from either volume can be independently released from independent valves. The system is particularly effective in improving the safety of re-entering an abandoned well.
    Type: Grant
    Filed: May 8, 2008
    Date of Patent: November 24, 2009
    Assignee: CCS Corporation
    Inventors: Kary Cuthill, Daryl Cuthill
  • Patent number: 7571773
    Abstract: Multiple ball launch assemblies comprise a plurality of ball launch pods disposed around an outer wall surface of a housing. The ball launch pods are operatively associated with a flow tube disposed within the housing. An actuator assembly rotates the flow tube to align a first opening in the flow tube with a first ball launch pod so that a first ball is launched into the wellbore. Further rotation of the flow tube aligns subsequent openings in the flow tube with subsequent corresponding ball launch pods so that subsequent balls are launched into the wellbore.
    Type: Grant
    Filed: April 17, 2008
    Date of Patent: August 11, 2009
    Assignee: Baker Hughes Incorporated
    Inventors: Lonnie C. West, Jason C. Mailand, Winfield M. Sides, III, Glenn A. Bahr
  • Patent number: 7568527
    Abstract: The invention includes methods of collecting crude oil and apparatus which collect crude oil. In one implementation, a crude oil collection header apparatus comprises a collection reservoir. A plurality of fluid conduits is connected to feed crude oil to the collection reservoir. The fluid conduits respectively comprise a collection reservoir feed valve, a bypass valve, and a crude oil feed inlet received between the collection reservoir feed and bypass valves. A flow meter conduit is connected with multiple of the plurality of fluid conduits downstream of the respective bypass valves. A flow meter is operably connected with the flow meter conduit. A crude oil outlet is associated with the collection reservoir. Other aspects and implementations are disclosed.
    Type: Grant
    Filed: January 4, 2007
    Date of Patent: August 4, 2009
    Assignee: Rock Well Petroleum, Inc.
    Inventors: Jonathan Richter, John McCarthy
  • Patent number: 7543649
    Abstract: The invention includes methods of collecting crude oil and apparatus which collect crude oil. In one implementation, a crude oil collection header apparatus includes a collection reservoir and a plurality of fluid conduits connected to feed crude oil to the collection reservoir. The fluid conduits respectively include a collection reservoir feed valve, a bypass valve, and a crude oil feed inlet received between the collection reservoir feed and bypass valves. A bypass conduit to which the fluid conduits connect is received downstream of the respective bypass valves. The bypass conduit includes a gas separator device. A flow meter conduit is connected with the bypass conduit downstream of the gas separator device. A flow meter is operably connected with the flow meter conduit. A crude oil outlet is associated with the collection reservoir. Other aspects and implementations are disclosed.
    Type: Grant
    Filed: January 11, 2007
    Date of Patent: June 9, 2009
    Assignee: Rock Well Petroleum Inc.
    Inventors: Jonathan Richter, John McCarthy
  • Publication number: 20080169097
    Abstract: A wellhead assembly for an injection tubing string is provided which allows a master valve to be closed without damaging the injection tubing string while still allowing for the use of a back pressure valve to isolate the tree. Wellhead assemblies and related methods of the present invention include a flange adapted to be connected between a wellhead and a Christmas tree. The assembly also includes a mandrel adapted to being inserted into the longitudinal bore of the flange, the mandrel having a port for communicating with an injection port which extends radially through the flange. The assembly further includes a hanger adapted to connect to the upper end of the injection string, wherein the hanger is further adapted to land in the longitudinal bore of the mandrel. The hanger includes a communication passageway for facilitating fluid communication between the port of the mandrel and the injection tubing string.
    Type: Application
    Filed: January 10, 2008
    Publication date: July 17, 2008
    Applicant: BJ Services Company
    Inventors: Jeffrey L. Bolding, Blane Cole, Thomas G. Hill
  • Patent number: 7377311
    Abstract: A safety valve system for removing down-hole tools from a coal-bed methane well. The system includes first and second horizontally opposed stuffer-blocks, a stuffer-box housing for housing the stuffer-blocks, a means for attaching said stuffer-box housing to a coal-bed methane wellhead, and a means for delivering fluid to move the stuffer-blocks between an open position and a closed position. In one embodiment, the safety valve system further includes a controller, at least one methane sensor, a stuffer-box position sensor, and a stuffer-block activation system. A control algorithm is stored on or in communication with the controller enabling the controller to control the position of the stuffer-blocks, moving the stuffer-blocks between an open and closed configuration, wherein the stuffer-blocks are maintained in an open configuration if the methane level is below a predetermined threshold level. The valve system may further comprise a free-rotating stripper-diverter atop of the valve system.
    Type: Grant
    Filed: March 15, 2006
    Date of Patent: May 27, 2008
    Inventors: Richard E. Scallen, Roy E. Knutson, Jr.
  • Patent number: 7363969
    Abstract: A casing vent security device includes an in-line section in communication with a casing vent, the in-line section having an ambient air passageway for selectively allowing ambient air to pass through the in-line section and into the vent. The device further includes a plurality of sensors disposed within the in-line section for monitoring the ambient air passing through the in-line section. The device still further includes at least one mechanism for selectively occluding the passage of ambient air into the vent upon receiving a signal from the sensors. The device provides information on the plurality of sensors and the vent.
    Type: Grant
    Filed: August 2, 2004
    Date of Patent: April 29, 2008
    Assignee: Xela Innovations, LLC
    Inventors: Kenneth Muderlak, Todd J. Muderlak
  • Patent number: 7350580
    Abstract: A coupling switches control fluid from a tubing hanger to a downhole completion of a subsea well. The coupling, located between a tubing hanging running tool and a downhole completion, includes a coupling body and a tubing hanger. A hydraulic poppet switches control fluid flow from a first and second flow path. The hydraulic poppet includes an isolation sleeve for opening and closing a first and second inlet port. At least two perimeter seals provide fluid isolation for the first flow path. A retainer seal seals the coupling body against the second inlet port. A retaining sleeve holds the coupling body against the tubing hanger. A first and second circumferential seal are located on opposite ends between the coupling body and tubing hanger. The hydraulic poppet is adapted to move perimeter seals and the retainer seal to open and close the first and second inlet ports.
    Type: Grant
    Filed: July 25, 2005
    Date of Patent: April 1, 2008
    Assignee: Aker Kvaerner Subsea, Inc.
    Inventor: Marcio Laureano
  • Patent number: 7331396
    Abstract: A subsea production system is disclosed. The subsea production system may comprise a well head, a tubing spool, a tubing hanger, an annulus, a production tree, and a bypass flow path.
    Type: Grant
    Filed: March 10, 2005
    Date of Patent: February 19, 2008
    Assignee: Dril-Quip, Inc.
    Inventors: Larry E. Reimert, Lionel J. Milberger
  • Patent number: 7322407
    Abstract: A wellhead assembly is provided including a casing and a tubular member mounted over the casing. A flange extends from the tubular member. A generally elongated annular member is provided in the tubular member. The generally elongated annular member has a first end portion above the tubular member and second end portion below the first end portion. A seal is formed between the second end portion and the tubular member. A hanger may be suspended within the tubular member. In such case, a seal may be formed between the elongate annular member and the hanger.
    Type: Grant
    Filed: November 9, 2005
    Date of Patent: January 29, 2008
    Assignee: Duhn Oil Tool, Inc.
    Inventors: Rex E. Duhn, Robert K. Meek
  • Patent number: 7111687
    Abstract: A method and assembly for recovering fluids from, or injecting fluids into, a well having a christmas tree; the fluids typically flow between first and second flowpaths in a continuous path. The assembly may be located within the main bore, or a side passage of the christmas tree. Embodiments of the invention allow the fluids to be fed to a processing apparatus, (e.g. a pump or chemical injection apparatus) for treatment, before being returned to the christmas tree. Optionally, the assembly may include a pump located inside the christmas tree body.
    Type: Grant
    Filed: August 29, 2003
    Date of Patent: September 26, 2006
    Assignee: DES Enhanced Recovery Limited
    Inventors: Ian Donald, James Steele, John Reid
  • Patent number: 7059418
    Abstract: A pressurized sealing arrangement suited for providing a seal between a valve stem and a valve body is provided. The sealing arrangement includes a piston that is restrained in and statically sealed to the valve body and which surrounds the valve stem. Contained within the piston is an annular seal packing that includes two sealing elements spaced apart by a spacer element. The piston includes a face acted upon by a process fluid flowing through the valve body in such a manner that the piston exerts pressure upon a lubricant cavity. The lubricant cavity is in fluid communication with the seal packing such that lubricant contained therein forms a lubricant ring around the stem. Lubricant is also thereby supplied to sealing elements of the packing seal. To prevent contamination of the seal packing, a removable cover is provided that encloses the piston and seal packing.
    Type: Grant
    Filed: November 18, 2003
    Date of Patent: June 13, 2006
    Assignee: Woodward Governor Company
    Inventors: Kevin E. Greeb, Jeffrey T. Stewart, Wade A. Burdick, Gary M. Bowman
  • Patent number: 7055611
    Abstract: A plug-dropping container used for releasing plugs or other objects into a wellbore during fluid circulation procedures. In one aspect, the plug-dropping container is used as part of a cementing head. The plug-dropping container comprises an elongated housing, and a canister disposed co-axially within the housing. The canister is configured to receive the plug, such as a drill pipe dart. A valve is disposed below the canister. The valve is movable from a plug-retained position where the plug is blocked, to a plug-released position where the plug may be released into the wellbore there below. In the plug-retained position, fluid is permitted to flow through the canister-housing annulus and around the valve.
    Type: Grant
    Filed: July 10, 2003
    Date of Patent: June 6, 2006
    Assignee: Weatherford / Lamb, Inc.
    Inventors: Gerald D. Pedersen, David E. Hirth
  • Patent number: 7051804
    Abstract: A cap for covering an open upper end of a subsea structure includes a base and a body. The base has a size, after shrinkage, at least slightly larger than the exterior of the open upper end of the subsea structure. The body is connected to the base and projects downward from the base. The body has an open bottom. The cap is positioned over the open upper end of the subsea structure with the base of the cap resting on the open upper end of the subsea structure and the body of the cap forms a wall around the exterior of the open upper end of the subsea structure for inhibiting the cap from slipping off the open upper end of the subsea structure.
    Type: Grant
    Filed: May 16, 2003
    Date of Patent: May 30, 2006
    Inventor: Michael Dean Arning
  • Patent number: 6966383
    Abstract: The horizontal spool tree assembly 10 controls fluid flow through a production tubing string 18 within a well. The horizontal spool tree assembly is adapted for use with a workover string for fluid communication with the tree assembly. The spool body 12 has a central bore 14 for receiving a tubing hanger 22 therein, with a production passageway extending laterally through the spool body to a production line 36. The spool body also includes an annulus passageway extending laterally through the spool body for fluid communication between the tubing annulus 16 and the annulus line 52. The spool tree assembly has improved porting for the production line and the annulus line, and also for both workover and crossover operations.
    Type: Grant
    Filed: December 9, 2003
    Date of Patent: November 22, 2005
    Assignee: Dril-Quip, Inc.
    Inventors: Lionel J. Milberger, Morris B. Wade
  • Patent number: 6953084
    Abstract: An electrical actuator is particularly suited for driving a wellhead valve for regulating the flow of natural gas from a production well. The electrical actuator can be driven using the existing local power supply in wellhead valve systems, typically a solar panel and a battery. The electrical actuator may include a gear reduction train, a brake and a manual input override with clutch protection. The electrical actuator can be configured in three different operational modes that provides a predetermined position upon power loss including fail-bias fixed, fail open and fail bias closed.
    Type: Grant
    Filed: January 10, 2003
    Date of Patent: October 11, 2005
    Assignee: Woodward Governor Company
    Inventors: Kevin E. Greeb, Jeffrey T. Stewart, Grant A. Sweer, Joel W. Kleckler, Roger T. Hybeck
  • Patent number: 6918439
    Abstract: A tubing assembly including a tubing string and tubing hanger provides a fluid passage with backpressure threads for securing a backpressure plug in a fluid-tight seal below the tubing hanger, so that the tubing hanger can be removed from the tubing string. The back pressure threads are preferably incorporated in a backpressure adapter pin connected between the tubing string and the tubing hanger. The adapter pin may also incorporate external weight-bearing shoulders for snubbing and/or suspending the tubing assembly. The backpressure plug is inserted or removed using a backpressure plug tool that slides through a packing in a pressurized casement that maintains pressure in an axial passage through a control stack of the wellhead.
    Type: Grant
    Filed: January 6, 2003
    Date of Patent: July 19, 2005
    Inventor: L. Murray Dallas
  • Publication number: 20040262010
    Abstract: A horizontal spool tree assembly includes a spool body or housing 12 and a tubing hanger 18, 118, 218, 318 supporting a tubing string in a well. An internal tree cap 20, 120, 220, 320 is provided within the central bore in the spool body. In some embodiments, the tree cap includes a central bore in communication with a production bore through the tubing hanger and the lateral bore extending to a production port in the spool body. First and second closure members may be provided in the tree cap.
    Type: Application
    Filed: June 22, 2004
    Publication date: December 30, 2004
    Inventor: Lionel J. Milberger
  • Patent number: 6817423
    Abstract: An apparatus for protecting equipment in a wellhead from exposure to fluid pressures, abrasives and corrosive fluids used in a well treatment to stimulate production, includes a mandrel to be inserted through the wellhead into an operative position. The apparatus further includes injectors for reciprocating the mandrel to and from the operative position. The injectors are connected on their top ends to a connector plate that provides a support platform to permit equipment, such as blowout preventers, wireline units, coil tubing injectors or the like, to be mounted to the top of the apparatus.
    Type: Grant
    Filed: June 4, 2002
    Date of Patent: November 16, 2004
    Inventor: L. Murray Dallas
  • Publication number: 20040177969
    Abstract: A flowhead for a well testing system is disclosed. The well testing system comprises a plurality of threaded connection pipes extending from the surface to a subterranean zone of interest which is isolated for testing purposes. Fluid flows from the subterranean zone into the flowhead and is directed to a flare and related measuring instrumentation. The flowhead includes a swab inlet with a swab valve, a kill line with an associated valve and a flow line with an associated valve. The line connecting directly to the well preferably comprises an outer swivel element integral with a body of the flowhead and a roller bearing supported inner swivel element rotatably mounted therein.
    Type: Application
    Filed: June 11, 2003
    Publication date: September 16, 2004
    Inventors: Alagarsamy Sundararajan, John Paul Ribeyre