External Anchoring Or Bracing Means Patents (Class 166/96.1)
  • Patent number: 9587467
    Abstract: A containment system for recovering hydrocarbon fluid from a leaking device comprising a wall extending from a base level to a first level for surrounding the leaking device, and a dome situated above the wall and forming a cavity for accumulating hydrocarbon fluid. The dome comprises an upper output opening for extracting the hydrocarbon fluid. The containment system further comprises a lower output opening extending up to a dome level. The wall and the dome are independent members so as the wall can be landed on the seafloor before the dome is installed.
    Type: Grant
    Filed: December 14, 2012
    Date of Patent: March 7, 2017
    Assignee: TOTAL SA
    Inventors: Van-Khoi Vu, Jean-Claude Bourguignon
  • Patent number: 8960276
    Abstract: A wellhead seal device forms metal seals in an annular space between inner and outer tubular members such as a rough casing held within aligned casing and tubing heads. An annular metal sealing sleeve has a lower portion seated in the annular space, and an upper portion which forms an inner sealing annulus adjacent the outer wall of the inner tubular member. A metal seal ring and a wedge ring are located in the inner sealing annulus. A retaining ring is retained by the upper portion above the wedge ring. Threaded seal energizing members extend through the retaining ring to push downwardly on the wedge ring and compress the metal seal ring radially inwardly to form a metal seal to the inner tubular member and thus seal the inner sealing annulus. The lower portion of the annular metal sealing sleeve may seal to the casing head and to the casing.
    Type: Grant
    Filed: September 21, 2011
    Date of Patent: February 24, 2015
    Assignee: Stream-Flo Industries Ltd.
    Inventors: Heinrich Lang, Tony M. Lam, Tianle Guo
  • Patent number: 8944156
    Abstract: Systems and methods are provided for isolating a landing ring of a hanger from pressure inside a wellhead and sealing a portion of the hanger via a seal assembly. The hanger includes a floating ring axially interposed between the landing ring and the seal assembly, and between the landing ring and a shoulder of the hanger. The seal assembly includes one or more radially retractable elastomeric seals that are radially retracted during run in of the seal assembly. The radially retractable seals may be radially expanded via shearing of one or more shear pins by torque applied to the seal assembly. The seal assembly may also include one or more metal seals having a plurality of rings having a nib configuration that includes three smaller nibs for sealing and a larger flat nib for withstanding the energizing load on the seal assembly.
    Type: Grant
    Filed: April 19, 2010
    Date of Patent: February 3, 2015
    Assignee: Cameron International Corporation
    Inventors: Lim Haw Keat, Joseph Chan
  • Publication number: 20140360716
    Abstract: The present application includes a tool configured to prevent bidirectional passage through a pipe or wellhead. The tool includes at least a housing and a latch. The housing is coupled to the wellhead. The housing has an interior volume in communication with an interior volume of the wellhead through an aperture. The wellhead has a central axis. The latch is pivotally coupled to the interior of the housing and oriented so as to pivot within a plane parallel to the central axis. The latch is configured to selectively enter and exit the interior of the wellhead between a first orientation and a second orientation. The tool may further include a tube to be coupled in axial alignment with the wellhead or pipe.
    Type: Application
    Filed: June 9, 2013
    Publication date: December 11, 2014
    Inventor: Richard Machina
  • Patent number: 8733434
    Abstract: In some embodiments, apparatus connectable between a top drive system and a tool useful in connection with a hydrocarbon exploration or production well includes a rotatable barrel, a non-rotating upper housing engageable with the top drive system, a rotatable lower housing engageable with the tool and a non-rotating communication ring.
    Type: Grant
    Filed: August 22, 2011
    Date of Patent: May 27, 2014
    Assignee: Baker Hughes Incorporated
    Inventor: Stewart John Barker
  • Patent number: 8720585
    Abstract: The present invention provides a deep-water oil well plug apparatus having a plunger member on an elongate shaft and a plurality of inflatable members configured and shapes to seal within the well bore, and a bell-shaped chamber placed on top of the oil well and adapted to be filled with concrete, and a hydraulic mechanism to remove and release the bell-shaped chamber from the oil well.
    Type: Grant
    Filed: May 9, 2011
    Date of Patent: May 13, 2014
    Inventor: Hussain Y. A. M. Mothaffar
  • Publication number: 20140076583
    Abstract: An anchor assembly for anchoring casing or other pipe against axial upward movement while permitting rotation of the casing or other pipe. An inner mandrel member has a central bore and a flange member extending around the outer circumference of the mandrel. A friction reducing ring member is located on an upper surface of the flange member, while layered friction reducing sleeve members are positioned around the outer surface of the mandrel member. An anchor sleeve member is concentrically and rotatably positioned around the outer surface of the outermost friction reducing sleeve member. Connection flanges, each having at least one bore for attachment to a shackle or other connecting device, extend laterally from the outer periphery of the anchor sleeve member and allow for anchoring of the assembly (and any attached casing or other pipe) to a rig or other structural support member.
    Type: Application
    Filed: September 18, 2013
    Publication date: March 20, 2014
    Applicant: BLACKHAWK SPECIALTY TOOLS, LLC
    Inventors: RON D. ROBICHAUX, THAD SCOTT, JAMES G. MARTENS, J. CHRISTOPHER JORDAN, JR.
  • 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: 8640767
    Abstract: A support structure for use on a rig floor and for supporting a unit used to manipulate tubular components through a wellhead comprises a support plate adapted to securely mount the support structure to said unit, a passage in the support plate of sufficient diameter to allow tubular components to pass therethrough, a plurality of rig engaging members and at least one tensile member mount. The unit used to manipulate tubular components through a wellhead may be a compact snubbing unit or may be a push/pull unit. The support structure may further comprise a worker platform to support a worker above the rig floor. Various push/pull system embodiments.
    Type: Grant
    Filed: May 11, 2009
    Date of Patent: February 4, 2014
    Assignee: Team Snubbing Services Inc.
    Inventor: Brian Tucken
  • Publication number: 20130087346
    Abstract: A temporary support device for oil well tubes and method of use. The device comprises a holding structure to be applied to the well surface casing, a holding base resting in the well's cellar floor and sets of adjustable supporting arms connecting the holding structure and the supporting base.
    Type: Application
    Filed: September 7, 2012
    Publication date: April 11, 2013
    Inventor: Lance N. Pattillo
  • Patent number: 8371373
    Abstract: A method and apparatus for plugging leaking oil and leaking gas wells is disclosed. The apparatus includes a stepped structure capable of being mounted over the one of the leaking oil well and the leaking gas well. The stepped structure includes a plurality of structural modules arranged in a stacked form. A pipe arrangement capable of extracting one or effluents perpendicularly passes through the plurality of structural modules. One or more effluents are extracted from one of the leaking oil well and the leaking gas well. Additionally, one or more pressure relief pipes are provided to extract the one or more effluents. The one or more pressure relief pipes protrude outwardly through a peripheral surface of each of one or more structural modules. The pipe arrangement and the one or more pressure relief pipes enables extraction of the one or more effluents to reduce the pressure within the stepped structure.
    Type: Grant
    Filed: August 27, 2010
    Date of Patent: February 12, 2013
    Assignee: King Abdul Aziz City for Science and Technology (KACST)
    Inventor: Mazen A. Ba-abbad
  • 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: 20120048542
    Abstract: An anti-lock system, device and method for logging a wellbore are presented. The anti-lock system of a downhole tool preferably includes a first arm, a second arm, a pad, a swivel bearing between the first arm and the pad, and an anti-locking device. The first arm has an arm first end connected to the tool body of the downhole tool and an arm second end connected to a first end of the pad. The second arm has an arm first end connected to the tool body of the downhole tool and an arm second end connected to a second end of the pad. The swivel bearing between the first arm and the pad pivotally connects the first arm to the pad.
    Type: Application
    Filed: August 30, 2010
    Publication date: March 1, 2012
    Inventor: Grégoire Jacob
  • Publication number: 20120018164
    Abstract: A tubular clamp for gripping a tubular is disclosed. In one aspect, a tubular clamp for use with a cutting and lifting system is provided. The tubular clamp is configured to move between an opened position and a closed position. The tubular clamp further includes at least one slip member to permit the clamp to bear the weight of a severed tubular string. Lifting lugs on an outer surface of the clamp permit attachment to a lifting assembly.
    Type: Application
    Filed: July 22, 2010
    Publication date: January 26, 2012
    Inventors: William J. Tabor, Huey J. Kliebert, JR., Scott A. Marshall, Benton John Vicknair
  • Patent number: 8066064
    Abstract: A wellhead system comprising a high pressure housing having a retractable ring and a casing hanger having an activation ring configured to be engaged by the retractable ring when the casing hanger is lowered into the high pressure housing. An expandable load member is carried by the casing hanger into the high pressure housing. When the activation ring is engaged by the retractable ring, the activation ring is blocked from further downward motion. The activation ring and the body of the casing hanger cooperate with the load member to expand the load member outward into engagement with the high pressure housing as the casing hanger is lowered further into the high pressure housing. The outer surface of the load member and the inner surface of the high pressure housing are configured so that the high pressure housing supports the casing hanger when the load member is expanded into engagement with the high pressure housing.
    Type: Grant
    Filed: November 12, 2008
    Date of Patent: November 29, 2011
    Assignee: Vetco Gray Inc.
    Inventors: Marc Minassian, David L. Ford
  • Publication number: 20110226488
    Abstract: An apparatus for supporting a rotatable tubing string in a well and for tensioning the tubing string includes a tubing head (12) and inner mandrel (34) positioned at least partially within the tubing head and supporting the tubing string. A bushing (32) is supported on the tubing head and engages the inner mandrel, such that the bushing and the inner mandrel rotate together. A tubing rotator (16) is provided for rotating the bushing, with a tubing rotator having a rotator mandrel connected to the bushing. A plurality of circumferentially spaced J-lock mechanisms (56) between the bushing and the inner mandrel are provided for tensioning the tubing string.
    Type: Application
    Filed: March 22, 2010
    Publication date: September 22, 2011
    Inventor: Javier Adolfo Garcia
  • Patent number: 7987904
    Abstract: A well cellar system includes a substantially planar base plate, the base defining an aperture sized to receive a conductor pipe. The planar base plate is an integral structural member which, in conjunction with the seal between the base plate and the wall and the riser and the conductor, are sufficiently robust to support the weight of the conductor pipe and its auxiliary equipment. The sealed well cellar is afforded with a laterally extending flange which serves as an anti-buoyancy anchor. A anti-buoyancy port allows the upward floatation pressure to be balanced out by water pressure within the cellar during placement to avoid floatation. A sacrificial anode housing is provided with a removable lid and holes for allowing passage of electrolyte. Although the preferred embodiments of sealed well cellars are metal and plastic, a cementaceous embodiment is also envisioned.
    Type: Grant
    Filed: June 17, 2008
    Date of Patent: August 2, 2011
    Inventor: James A. Rose
  • Patent number: 7984758
    Abstract: A multi-lock adapter used to inject high-pressure well stimulation fluids through an independent screwed wellhead includes an adapter pin having a central passageway with an internal diameter at least as large as a passageway through the wellhead. A lockdown flange secures the adapter pin to a casing mandrel of the wellhead. The lockdown flange ensures that stress on connection points to the screwed independent wellhead due to elevated fluid pressures used for well stimulation procedures does not exceed engineered specifications.
    Type: Grant
    Filed: March 31, 2010
    Date of Patent: July 26, 2011
    Assignee: Stinger Wellhead Protection, Inc.
    Inventors: Bob McGuire, L. Murray Dallas
  • Publication number: 20100258295
    Abstract: A wellhead system, in an embodiment, includes a first wellhead component with an internal bore, and a second wellhead component with a lower end disposed within the first wellhead component internal bore and an upper end disposed outside of the first wellhead component internal bore. The upper end of the second wellhead component has a groove disposed on an outer surface thereof. The wellhead system also includes a retaining member with a plurality of sections, wherein a portion of the retaining member is at least partially disposed in the groove on the second wellhead component, the retaining member is coupled to the first wellhead component, and an anti-rotation mechanism engages both the retaining member and the second wellhead component.
    Type: Application
    Filed: December 16, 2008
    Publication date: October 14, 2010
    Applicant: CAMERON INTERNATIONAL CORPORATION
    Inventor: Dennis P. Nguyen
  • Publication number: 20100212916
    Abstract: A stabilizer for a wellhead is disclosed, comprising: a ground engaging support structure having lateral dimensions suitable for laterally stabilizing a wellhead; wellhead stabilizer elements disposed within the ground engaging support structure, the wellhead stabilizer elements having wellhead abutting faces spaced to laterally cage a wellhead to restrict lateral movement of the wellhead while permitting the wellhead to move in a vertical direction.
    Type: Application
    Filed: March 23, 2009
    Publication date: August 26, 2010
    Inventor: Jim Rice
  • Patent number: 7740061
    Abstract: A method and apparatus for installing casing hangers in a wellbore utilizing an externally activated gripping system to temporarily bind wearbushings secured to casing and tubing hangers in order to lock-down such hangers during various wellbore drilling activities, thereby minimizing the size of landing shoulders and eliminating additional lock down equipment and simplifying running procedures.
    Type: Grant
    Filed: September 24, 2007
    Date of Patent: June 22, 2010
    Assignee: Plexus Ocean Systems Ltd.
    Inventors: Bernard Herman Van Bilderbeek, Craig Hendrie
  • Patent number: 7726393
    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 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: May 21, 2008
    Date of Patent: June 1, 2010
    Assignee: Duhn Oil Tool, Inc.
    Inventors: Rex E. Duhn, Robert K. Meek
  • Patent number: 7708079
    Abstract: A multi-lock adapter used to inject high-pressure well stimulation fluids through an independent screwed wellhead includes an adapter pin having a central passageway with an internal diameter at least as large as a passageway through the wellhead. A lockdown flange secures the adapter pin to a casing mandrel of the wellhead. The lockdown flange ensures that stress on connection points to the screwed independent wellhead due to elevated fluid pressures used for well stimulation procedures does not exceed engineered specifications.
    Type: Grant
    Filed: September 18, 2008
    Date of Patent: May 4, 2010
    Assignee: Stinger Wellhead Protection, Inc.
    Inventors: Bob McGuire, L. Murray Dallas
  • Publication number: 20100038095
    Abstract: An apparatus for use in wellbore operations and a method for using it is provided. The apparatus includes a main body, two support ears spaced-apart and projecting from the main body, each having an inner ear part and an outer ear part. The inner ear part is able to support more weight than the outer ear part. In certain aspects, structure for preventing a large support link from being positioned on an outer ear part is provided. The apparatus, may be any of a link adapter, a block adapter, a becket, an elevator, and a drilling hook.
    Type: Application
    Filed: October 22, 2009
    Publication date: February 18, 2010
    Inventors: Lawrence E. Wells, James Edward Lynch, Neil Edward West, Guy L. McClung, III
  • Patent number: 7650936
    Abstract: A drilling flange and an independent screwed wellhead provides a metal-to-metal seal that supplements the traditional elastomeric O-rings for providing a fluid seal between the drilling flange and the wellhead. The metal-to-metal seal may be achieved using a metal ring gasket or two contacting metal surfaces that are machined to required tolerances and are configured to be forced together when the drilling flange is mounted to the wellhead. The metal-to-metal seal ensures a fluid seal between the flange body and the wellhead in the event that the O-rings malfunction or are destroyed by fire.
    Type: Grant
    Filed: December 9, 2008
    Date of Patent: January 26, 2010
    Assignee: Stinger Wellhead Protection, Inc.
    Inventors: Bob McGuire, L. Murray Dallas
  • Patent number: 7520322
    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: December 11, 2007
    Date of Patent: April 21, 2009
    Assignee: Duhn Oil Tool, Inc.
    Inventors: Rex E. Duhn, Robert K. Meek
  • Patent number: 7484558
    Abstract: A support structure for a rig above a wellhead, such as a snubbing unit, is provided which directs loads from the rig into the ground to minimize stress on the wellhead components. The support structure generally comprises a support plate to be secured onto a wellhead and onto which the rig is secured and at least three ground engaging members distributed around and connected to the support plate, with the ground engaging members accepting the load placed on the support plate. The ground engaging members can be independently vertically adjustable, such as jack stands, for distributing the load between the ground engaging members. The support structure can also be adapted to be movable between a compact shipping position and a deployed operating position.
    Type: Grant
    Filed: May 25, 2006
    Date of Patent: February 3, 2009
    Assignee: High Arctic Energy Services Limited Partnership
    Inventor: Jed Morgan Wood
  • Patent number: 7475721
    Abstract: A drilling flange and an independent screwed wellhead provides a metal-to-metal seal that supplements the traditional elastomeric O-rings for providing a fluid seal between the drilling flange and the wellhead. The metal-to-metal seal may be achieved using a metal ring gasket or two contacting metal surfaces that are machined to required tolerances and are configured to be forced together when the drilling flange is mounted to the wellhead. The metal-to-metal seal ensures a fluid seal between the flange body and the wellhead in the event that the O-rings malfunction or are destroyed by fire.
    Type: Grant
    Filed: February 26, 2008
    Date of Patent: January 13, 2009
    Assignee: Stinger Wellhead Protection, Inc.
    Inventors: Bob McGuire, L. Murray Dallas
  • Patent number: 7469742
    Abstract: A gas well cap seal assembly adapted to seal the casing bowl of a gas well and to pressurize the annulus region between the inner surface of the well bore and the outer surface of the well casing which is filled with wet cement. The pressurized annulus aids in the prevention of forming gas bubbles and gas leakage paths in the annulus region.
    Type: Grant
    Filed: June 6, 2006
    Date of Patent: December 30, 2008
    Inventor: Lance Earl Larsen
  • Patent number: 7428931
    Abstract: A multi-lock adapter used to inject high-pressure well stimulation fluids through an independent screwed wellhead includes an adapter pin having a central passageway with an internal diameter at least as large as a passageway through the wellhead. A lockdown flange secures the adapter pin to a casing mandrel of the wellhead. The lockdown flange ensures that stress on connection points to the screwed independent wellhead due to elevated fluid pressures used for well stimulation procedures does not exceed engineered specifications.
    Type: Grant
    Filed: August 8, 2007
    Date of Patent: September 30, 2008
    Assignee: Stinger Wellhead Protection, Inc.
    Inventors: Bob McGuire, L. Murray Dallas
  • Patent number: 7416020
    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 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: August 9, 2007
    Date of Patent: August 26, 2008
    Assignee: Duhn Oil Tool, Inc.
    Inventors: Rex E. Duhn, Robert K. Meek
  • Publication number: 20080196882
    Abstract: A slip spool includes radially disposed actuators for radially moving slip blocks between a loose encirclement position in which they surround the tubing string and a cached position in which the slip blocks clear an axial passage of the slip spool. The slip spool further includes axially disposed actuators for axially displacing the slip blocks between the loose encirclement position and an engagement position in which the slip blocks are seated within a slip bowl of the slip spool so that a weight of the suspended tubing string causes the slip blocks to tightly grip the tubing string. The slip spool facilitates positioning and repositioning of the tubing string in the wellbore and can be used for supporting or snubbing a tubing string in a live well bore.
    Type: Application
    Filed: April 21, 2008
    Publication date: August 21, 2008
    Applicant: STINGER WELLHEAD PROTECTION, INC.
    Inventors: Bob McGuire, L. Murray Dallas, Irwin Rosenhauch
  • Patent number: 7413008
    Abstract: A tool for use in wells to maintain a tubed pipe filled with drilling fluid supplied by a well and to circulate the fluid through a well-pipe space, the tool facilitating sliding of tubes and producing cementation of the space. The tool can be intercalated with drilling equipment between a block and a pipe elevating arrangement for tubes that are gradually coupled to make up the casing pipe. The tool is placed between amelas extending from a rig support to adjacent the pipe elevating arrangement, the tool including a support array for positioning the tool in the drilling equipment, a positioning dynamic array to move the tool upward and downward to mate the tool on, and decouple it from, a tube, and a packaging array to, during the matings, establish a hermetic, self-adjustable elastic seal for the passage of well fluid to the inside of the tube.
    Type: Grant
    Filed: July 26, 2005
    Date of Patent: August 19, 2008
    Inventor: Antonio Carlos Cayetano Basso
  • Publication number: 20080135230
    Abstract: An apparatus for use in wellbore operations, the apparatus including a main body, two support ears spaced-apart and projecting from the main body, each inner ear part having an inner part, and an outer ear part, the inner part able to support more weight than the outer part; and, in certain aspects, structure for preventing a large support link from being positioned on an outer ear part; the apparatus, in certain aspects, being any of a link adapter, a block adapter, a becket, an elevator, and a drilling hook.
    Type: Application
    Filed: December 6, 2006
    Publication date: June 12, 2008
    Inventors: Lawrence E. Wells, James Edward Lynch, Neil Edward West, Guy L. McClung
  • Patent number: 7290612
    Abstract: The present invention is directed to an apparatus and method for reverse circulation cementing a casing in an open-hole wellbore. The apparatus includes a surface pack-off device, which has a housing defined by an upper section and lower section. A load bearing plate is secured to the housing between the upper and lower sections. The load plate and lower section of the housing cooperate to prevent sloughing of the earth at the surface of the wellbore via a section of casing string. The surface pack-off device also includes a casing hanger, which couples to the casing in the wellbore. Fluid inlets allow the cement to be pumped into the wellbore in the annulus formed between the casing and wellbore sidewall. The method includes the steps of installing the surface pack-off device and operation on reverse circulation of the cement down the annulus.
    Type: Grant
    Filed: December 16, 2004
    Date of Patent: November 6, 2007
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Henry E. Rogers, Earl D. Webb
  • Patent number: 7267180
    Abstract: A lockdown flange for use with an independent screwed wellhead includes an annular body having a center passageway with an internal diameter at least as large as a passageway through the wellhead. The lock down flange may be used to construct a multi-lock adapter for connecting a high pressure valve, a blowout preventer or a well stimulation tool to the independent screwed wellhead. The lockdown flange ensures that stress on connection points to the screwed independent wellhead due to elevated fluid pressures used for well stimulation procedures does not exceed engineered specifications.
    Type: Grant
    Filed: April 25, 2006
    Date of Patent: September 11, 2007
    Assignee: Stinger Wellhead Protection, Inc.
    Inventors: Bob McGuire, L. Murray Dallas
  • Patent number: 7225871
    Abstract: A system for cementing a casing in an open wellbore having no surface casing, wherein an annulus is defined between the casing and the wellbore, the system having: an annular plug around the casing at the mouth of the wellbore; a cement composition pump fluidly connected to the annulus through the seal; and a coupling connected to the exposed end of the casing for taking circulation fluid returns from the inner diameter of the casing.
    Type: Grant
    Filed: October 21, 2005
    Date of Patent: June 5, 2007
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Henry E. Rogers, Earl D. Webb, Karl Blanchard
  • Patent number: 7128143
    Abstract: A method and apparatus for a seal assembly for a unitized wellhead system for land or platform applications utilizes a friction grip technology to create maintainable metal-to-metal seals with finely-controlled contact stresses, lock-down casing and tubing hangers, support test loads to minimize the size of landing shoulders required, and to rotationally lock casing hangers to provide simplified running procedures. The system can be used in combination with a friction grip clamping assembly to greatly streamline the wellhead design.
    Type: Grant
    Filed: December 31, 2003
    Date of Patent: October 31, 2006
    Assignee: Plexus Ocean Systems Ltd.
    Inventor: Bernard Herman Van Bilderbeek
  • Patent number: 7032677
    Abstract: A lockdown flange for use with an independent screwed wellhead includes an annular body having a center passageway with an internal diameter at least as large as a passageway through the wellhead. The lock down flange may be used to construct a multi-lock adapter for connecting a high pressure valve, a blowout preventer or a well stimulation tool to the independent screwed wellhead. The lockdown flange ensures that stress on connection points to the screwed independent wellhead due to elevated fluid pressures used for well stimulation procedures does not exceed engineered specifications.
    Type: Grant
    Filed: June 27, 2003
    Date of Patent: April 25, 2006
    Assignee: H W CES International
    Inventors: Bob McGuire, L. Murray Dallas
  • Patent number: 6920925
    Abstract: A wellhead isolation tool and a wellhead assembly incorporating such a tool are provided. The wellhead assembly has an annular assembly coupled to a well. The annular assembly may include a casing head coupled to the well and a tubing head mounted over the casing head. The wellhead isolation tool is suspended in the annular assembly. The wellhead isolation tool has a first end portion extending above the annular assembly and a second end portion below the first end portion within the annular assembly. A production casing suspended in the annular assembly and is aligned with the wellhead isolation tool.
    Type: Grant
    Filed: February 19, 2003
    Date of Patent: July 26, 2005
    Assignee: Duhn Oil Tool, Inc.
    Inventors: Rex E. Duhn, Robert K. Meek
  • Publication number: 20040055742
    Abstract: A cup tool for use with a mandrel of a wellhead isolation tool has a substantially right-angled stepped shoulder over which an elastomeric sealing element is forced by elevated fluid pressures. A top end of the elastomeric sealing element is inhibited from extrusion past the stepped shoulder during the insertion of the mandrel, thereby reducing the risk of damaging the sealing element before the mandrel is fully inserted through the wellhead. Once the sealing element is exposed to elevated fluid pressures, the top end of the elastomeric sealing element is forced upwardly over the stepped shoulder, and extruded into an annulus between the mandrel and a well casing or production tubing to provide a high-pressure fluid seal.
    Type: Application
    Filed: September 20, 2002
    Publication date: March 25, 2004
    Inventor: L. Murray Dallas
  • Patent number: 6662868
    Abstract: A clamp for clamping two concentric tubes, typically two concentric tubes in an oil or gas well. The clamp has two axially movable tapered components which can be pulled over one another in an axial direction to provide a contraction of internal diameter which grips the smaller diameter tube. In one embodiment, a spacer is fitted to allow the tapered components to be held apart until the tubes have been correctly positioned. The spacer is then removed, and the tapered components are drawn together to effect the clamping. A hydraulic ram can be provided to separate the tapered components should readjustment be required. In another embodiment, the larger diameter tube is made with a relatively thin wall, so that it can be distorted inwards to grip the smaller tube.
    Type: Grant
    Filed: October 25, 2000
    Date of Patent: December 16, 2003
    Inventor: Bernard H. Van Bilderbeek
  • Patent number: 6508311
    Abstract: A string of pipe formed by the connection together of multiple joints of shorter pipe segments is stored in the water space adjacent an offshore drilling rig. The pipe string bends from the drilling rig floor in a semicircular arc and enters the water adjacent the drilling rig. A curving guide is used to direct the pipe string movement. A platform extension from the corner of the drilling rig is provided to position a work area above the point at which the pipe enters the water. Multiple guides may be employed for simultaneously running two strings of pipe. The string may be stored in one or more long sections or in a single continuous string. The major portions of the string or long pipe sections may be stored below the surface of the water. Provision is made for pumping fluids through the pipe string, and/or the pipe sections, to the well. The string may be stored in a sleeve.
    Type: Grant
    Filed: October 2, 2000
    Date of Patent: January 21, 2003
    Inventor: Carlos A. Torres
  • Patent number: 6401811
    Abstract: A tool tie down system is provided which ties down a well tool inserted into the top end of a casing string being lowered into a well from upward movement caused by pressure forces from below the well tool inside the upper end of the casing string. The system includes a frictionally engageable clasp for supporting a tie down yoke on the bails connecting the traveling block and elevator slips assembly. A plurality of cords attached to the elevator on one end and the tie down yoke on the other end redirect forces from below to hold the well tool in place resisting these forces, the cords being fabricated, for example from an elastomer, a metal or metal alloy, a fiber, or combinations thereof.
    Type: Grant
    Filed: April 24, 2000
    Date of Patent: June 11, 2002
    Assignee: Davis-Lynch, Inc.
    Inventor: Malcolm G. Coone
  • Patent number: 6276464
    Abstract: A coupling for quickly and easily attaching and detaching stakes from the drive head of a horizontal directional drill. The coupling includes an upper coupler member and a lower coupler member. The lower coupler member slides into the upper coupler member, and a pin in the upper coupler member rotates into opposed, horizontal slots in the lower coupler member.
    Type: Grant
    Filed: February 10, 2000
    Date of Patent: August 21, 2001
    Assignee: Case Corporation
    Inventors: Robert G. Draney, Donald C. Sassor, Jeffrey S. Volden