Patents Represented by Attorney Rodney V. Warfford
  • Patent number: 8235108
    Abstract: A sealing member. The sealing member can include a support member having an inner bore and a plurality of apertures formed therethrough. An outer swellable element can be disposed about an outer diameter of the support member, and an inner swellable element can be disposed about an inner diameter of the support member. The swellable elements can be unitized with one another through each aperture. A retainer can be disposed at each end of the support member.
    Type: Grant
    Filed: March 2, 2009
    Date of Patent: August 7, 2012
    Assignee: Schlumberger Technology Corporation
    Inventors: Frederick Lemme, Nitin Y. Vaidya
  • Patent number: 8191644
    Abstract: Disclosed herein is a completion device that includes an interior layer that swells when exposed to a wellbore fluid; and an exterior layer encasing the interior layer and configured to be impermeable to the wellbore fluid at temperatures below an activation depth temperature, and configured to be permeable to the wellbore fluid at temperatures above the activation depth temperature. Also disclosed herein is a method of deploying a completion device that includes encasing an interior layer of the device in a temperature-sensitive exterior layer that is impermeable to a fluid in the wellbore at temperatures below an activation depth temperature; attaching the device on a tube string; inserting the tube string into the wellbore; creating a leak path in the temperature-sensitive exterior layer in response to the device being exposed to the activation depth temperature in the wellbore; and swelling the interior layer with the wellbore fluid.
    Type: Grant
    Filed: December 7, 2009
    Date of Patent: June 5, 2012
    Assignee: Schlumberger Technology Corporation
    Inventors: Gary Rytlewski, Nitin Vaidya
  • Patent number: 8047280
    Abstract: A downhole tool for isolating zones in a well, the tool including a mandrel, a sealing element disposed around the mandrel, and an upper cone disposed around the mandrel proximate an upper end of the sealing element. The tool further including an upper slip assembly disposed around the mandrel adjacent a sloped surface of the upper cone, a lower cone disposed around the mandrel proximate a lower end of the sealing element, a lower slip assembly disposed around the mandrel adjacent a sloped surface of the lower cone, and two element end rings. Further, the tool includes a first element end ring disposed adjacent the upper end of the sealing element and a second element end ring disposed adjacent the lower end of the sealing element, and two element barrier assemblies, each assembly disposed adjacent one of the two element end rings.
    Type: Grant
    Filed: September 8, 2010
    Date of Patent: November 1, 2011
    Assignee: Smith International, Inc.
    Inventors: Lap T. Tran, William M. Roberts, Piro Shkurti, George J. Melenyzer
  • Patent number: 8037938
    Abstract: A completion system including a packer disposed in a wellbore and a tubular string having a bore therethrough configured to land into the packer. The tubular string includes an alignment sub, a seal assembly disposed below the alignment sub and having at least two longitudinal bores disposed through the seal assembly and offset from the bore of the tubular string. The tubular string also includes a sleeve sub disposed below the seal assembly, wherein the sleeve sub allows fluid communication between a bore of the tubular string and an annulus formed between the tubular string and the wellbore. The tubular string also includes at least two control lines operatively connected to the sleeve sub, wherein the at least two control lines are run through he at least two longitudinal bores of the seal assembly.
    Type: Grant
    Filed: May 28, 2009
    Date of Patent: October 18, 2011
    Assignee: Smith International, Inc.
    Inventors: Meroveu Jardim De Azevedo, Flavio Froes Sant'ana, Sebastian C. Calo, Alejandro Stepkowski
  • Patent number: 7938192
    Abstract: A packer that is usable with a well includes an anchor. The anchor includes at least one spirally extending ring, which is adapted to be selectively radially expanded to secure the packer to a casing string.
    Type: Grant
    Filed: November 24, 2008
    Date of Patent: May 10, 2011
    Assignee: Schlumberger Technology Corporation
    Inventor: Gary Rytlewski
  • Patent number: 7938191
    Abstract: A downhole tool includes a swellable core, and a coating that encapsulates the swellable core, wherein the coating is made of a material comprising a component soluble in a selected fluid and a component insoluble in the selected fluid. A method for controlling a downhole tool includes disposing a downhole tool in a wellbore, wherein the downhole tool includes a swellable core, and a coating that encapsulates the swellable core, wherein the coating is made of a material comprising a component soluble in a selected fluid and a component insoluble in the selected fluid; and exposing the swellable device to the selected fluid to increase the permeability of the coating to allow the swellable core to swell.
    Type: Grant
    Filed: April 15, 2008
    Date of Patent: May 10, 2011
    Assignee: Schlumberger Technology Corporation
    Inventor: Nitin Y. Vaidya
  • Patent number: 7854267
    Abstract: The present invention comprises a system and methods to actuate downhole tools by transmitting an optical signal through an optical fiber to the downhole tool. The optical signal can comprise a specific optical signal frequency, signal, wavelength or intensity. The downhole tool can comprise packers, perforating guns, flow control valves, such as sleeve valves and ball valves, samplers, sensors, pumps, screens (such as to expand), chemical cutters, plugs, detonators, or nipples.
    Type: Grant
    Filed: April 27, 2009
    Date of Patent: December 21, 2010
    Assignee: Schlumberger Technology Corporation
    Inventors: David R. Smith, Rogerio T. Ramos, Arthur H. Hartog, Vladimir Vaynshteyn
  • Patent number: 7836961
    Abstract: A tool includes an integrated hydraulic setting and hydrostatic setting mechanism that has a first part responsive to hydraulic pressure applied through a conduit, and a second part responsive to hydrostatic pressure. An activatable element can be activated by the integrated hydraulic setting and hydrostatic setting mechanism.
    Type: Grant
    Filed: March 5, 2008
    Date of Patent: November 23, 2010
    Assignee: Schlumberger Technology Corporation
    Inventors: Haoming Li, Bryan Burwell
  • Patent number: 7832471
    Abstract: A fitting arrangement and method of securing a fitting arrangement to a surface is provided. A plurality of adjacent fittings is coupled to and extends from a mounting surface of a structure in a well bore. Each fitting has an engagement surface that is configured to engage with an installation tool for coupling the fitting to the structure. The engagement surfaces of the adjacent fittings in the plurality are offset from each other to thereby define a clearance for the installation tool.
    Type: Grant
    Filed: March 28, 2008
    Date of Patent: November 16, 2010
    Assignee: Schlumberger Technology Corporation
    Inventors: James Verzwyvelt, James Hendricksonj, Ian Raw, Michael Alff
  • Patent number: 7819184
    Abstract: A logging plug is disclosed having an internal sealing mechanism therein which provides a high degree of sealing integrity between the bore of the plug and a coiled tubing or other means of suspending wellbore equipment running therethrough. The sealing mechanism utilizes a combination of low friction, elastomerically-energized cap seals and ring seals to ensure that the sealing surfaces adapt continuously to the changing profile of the coiled tubing to provide a true dynamic seal around the coiled tubing.
    Type: Grant
    Filed: June 21, 2005
    Date of Patent: October 26, 2010
    Assignee: Schlumberger Technology Corporation
    Inventors: Sandeep Sachdeva, Marc McCorry, Andrew S. Ferguson
  • Patent number: 7753128
    Abstract: Disclosed herein are methods for preparing a wellbore for production or injection. The methods may include the steps of positioning a completion longer than 300m comprising an inflow control device (ICD) having radial flow paths in the wellbore adjacent to a filtercake and determining the pressure required to lift the filtercake off of the wellbore. The radial flow paths of the ICD are designed such that when the filtercake adjacent to a downstream portion of the ICD completion is removed, the pressure drop across the first downstream part of the ICD completion is sufficient to maintain a drawdown pressure high enough such that the second upstream filtercake is also removed.
    Type: Grant
    Filed: November 21, 2008
    Date of Patent: July 13, 2010
    Assignee: Schlumberger Technology Corporation
    Inventor: Terje Moen
  • Patent number: 7741744
    Abstract: A technique is provided to facilitate pumping of fluids in a well. A submersible pumping system utilizes a submersible motor to power a submersible pump. A motor protector works in cooperation with the submersible motor to protect motor fluid within the submersible motor and to reduce differential pressures between the internal motor fluid and the external well fluid. The motor protector incorporates a piston slidably sealed within an interior cavity of the motor protector for movement to reduce undue differential pressures.
    Type: Grant
    Filed: March 27, 2006
    Date of Patent: June 22, 2010
    Assignee: Schlumberger Technology Corporation
    Inventors: Arthur I. Watson, Michael H. Du, John D. Rowatt
  • Patent number: 7720325
    Abstract: A technique is provided for utilizing an optical fiber in a variety of sensing applications and environments by beneficially routing the optical fiber. A continuous optical fiber is created to provide optical continuity between two ends of the optical fiber. The optical continuity is created with the assistance of an optical turnaround constructed in a simple, dependable form able to control the bend of the optical fiber as it extends through the optical turnaround.
    Type: Grant
    Filed: June 27, 2008
    Date of Patent: May 18, 2010
    Assignee: Schlumberger Technology Corporation
    Inventors: Harini Varadarajan, Scott A. Rubinstein, Rogerio T. Ramos
  • Patent number: 7712541
    Abstract: A technique is provided to temporarily protect well system components during transport, movement downhole and/or initial downhole operations. A sacrificial material is formed as a protective sacrificial element disposed proximate susceptible well system components. The protective sacrificial element is at least partially dissolvable in fluids within a wellbore to facilitate removal of the element after a desired time period. Once the temporary, protective sacrificial element is removed, the protected well system component is fully operable.
    Type: Grant
    Filed: November 1, 2006
    Date of Patent: May 11, 2010
    Assignee: Schlumberger Technology Corporation
    Inventors: Ives Loretz, Donald Ross