Patents by Inventor Paul Wanjau

Paul Wanjau has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 11804314
    Abstract: Electrical cables and processes for making and using same. In some examples, the electrical cable can include one or more insulated electrical conductors and one or more metallic elements cabled together and a metallic layer disposed about the one or more insulated electrical conductors and the one or more metallic elements. The one or more metallic elements can partially fill a space located between the one or more insulated electrical conductors and the metallic layer. The one or more insulated electrical conductors can each include an electrically conductive core, a layer of electrically insulating material disposed about the electrically conductive core, and a layer of metallic strands disposed about the layer of electrically insulating material.
    Type: Grant
    Filed: February 1, 2021
    Date of Patent: October 31, 2023
    Assignee: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Joseph Varkey, Willem Wijnberg, Maria Grisanti, Paul Wanjau, Douglas Pipchuk
  • Patent number: 11098546
    Abstract: A system includes a cable and at least one coupling device installed along the cable. The coupling element has one or more through cavities for receiving the cable, and configured to hold the cable when disposed in the cavity against a surface of the wellbore.
    Type: Grant
    Filed: September 30, 2019
    Date of Patent: August 24, 2021
    Assignee: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Joseph Varkey, Maria Grisanti, Paul Wanjau, David Kim, William Brian Underhill, Nicolas Roumilly, Sebastien Isambert
  • Patent number: 11072983
    Abstract: A system includes a cable and a toolstring. The toolstring may couple to the cable to enable the toolstring to be placed in a wellbore. The toolstring includes a sensor that can collect measurements relating to the wellbore. An electromagnetic or anchoring device may selectively hold the toolstring or the cable against a surface of the wellbore.
    Type: Grant
    Filed: November 11, 2019
    Date of Patent: July 27, 2021
    Assignee: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Joseph Varkey, Maria Grisanti, Paul Wanjau, David Kim, William Brian Underhill
  • Publication number: 20210158991
    Abstract: Electrical cables and processes for making and using same. In some examples, the electrical cable can include one or more insulated electrical conductors and one or more metallic elements cabled together and a metallic layer disposed about the one or more insulated electrical conductors and the one or more metallic elements. The one or more metallic elements can partially fill a space located between the one or more insulated electrical conductors and the metallic layer. The one or more insulated electrical conductors can each include an electrically conductive core, a layer of electrically insulating material disposed about the electrically conductive core, and a layer of metallic strands disposed about the layer of electrically insulating material.
    Type: Application
    Filed: February 1, 2021
    Publication date: May 27, 2021
    Inventors: Joseph Varkey, Willem Wijnberg, Maria Grisanti, Paul Wanjau, Douglas Pipchuk
  • Patent number: 10854354
    Abstract: A method and method of using a cable that includes a cable core. The cable core has an inner armor wire layer disposed thereabout. The inner armor wire layer has an outer armor wire layer disposed thereabout. The inner armor wire layer and outer armor wire layer have torque removed therefrom during manufacturing.
    Type: Grant
    Filed: July 21, 2017
    Date of Patent: December 1, 2020
    Assignee: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Joseph Varkey, Sheng Chang, Burcu Unal Altintas, Qingdi Huang, Jeffrey Joseph Kamps, Paul Wanjau
  • Patent number: 10738577
    Abstract: Method and system for multi-stage well treatment wherein an isolating device is tethered with a distributed measurement cable during the treatment of one or more stages. The cable having a cable core including an optical fiber conductor.
    Type: Grant
    Filed: May 12, 2015
    Date of Patent: August 11, 2020
    Assignee: Schlumberger Technology Corporation
    Inventors: Joseph Varkey, Paul Wanjau, David Geehyun Kim, Maria Auxiliadora Grisanti, Sheng Chang, Peter John Richter, Alejandro Andres Pena Gonzalez, Bruno Lecerf, Dmitriy Usoltsev
  • Publication number: 20200072006
    Abstract: A system includes a cable and a toolstring. The toolstring may couple to the cable to enable the toolstring to be placed in a wellbore. The toolstring includes a sensor that can collect measurements relating to the wellbore. An electromagnetic or anchoring device may selectively hold the toolstring or the cable against a surface of the wellbore.
    Type: Application
    Filed: November 11, 2019
    Publication date: March 5, 2020
    Inventors: Joseph Varkey, Maria Grisanti, Paul Wanjau, David Kim, William Brian Underhill
  • Publication number: 20200024920
    Abstract: A system includes a cable and at least one coupling device installed along the cable. The coupling element has one or more through cavities for receiving the cable, and configured to hold the cable when disposed in the cavity against a surface of the wellbore.
    Type: Application
    Filed: September 30, 2019
    Publication date: January 23, 2020
    Inventors: Joseph Varkey, Maria Grisanti, Paul Wanjau, David Kim, William Brian Underhill, Nicolas Roumilly, Sebastien Isambert
  • Patent number: 10472910
    Abstract: A system includes a cable and a toolstring. The toolstring may couple to the cable to enable the toolstring to be placed in a wellbore. The toolstring includes a sensor that can collect measurements relating to the wellbore. An electromagnetic or anchoring device may selectively hold the toolstring or the cable against a surface of the wellbore.
    Type: Grant
    Filed: December 28, 2016
    Date of Patent: November 12, 2019
    Assignee: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Joseph Varkey, Maria Grisanti, Paul Wanjau, David Kim, William Brian Underhill
  • Publication number: 20180350488
    Abstract: Electrical cables and processes for making and using same. In some examples, the electrical cable can include one or more insulated electrical conductors and one or more metallic elements cabled together and a metallic layer disposed about the one or more insulated electrical conductors and the one or more metallic elements. The one or more metallic elements can partially fill a space located between the one or more insulated electrical conductors and the metallic layer. The one or more insulated electrical conductors can each include an electrically conductive core, a layer of electrically insulating material disposed about the electrically conductive core, and a layer of metallic strands disposed about the layer of electrically insulating material.
    Type: Application
    Filed: June 2, 2017
    Publication date: December 6, 2018
    Inventors: Joseph Varkey, Willem Wijnberg, Maria Grisanti, Paul Wanjau, Douglas Pipchuk
  • Publication number: 20180179840
    Abstract: A system includes a cable and a toolstring. The toolstring may couple to the cable to enable the toolstring to be placed in a wellbore. The toolstring includes a sensor that can collect measurements relating to the wellbore. An electromagnetic or anchoring device may selectively hold the toolstring or the cable against a surface of the wellbore.
    Type: Application
    Filed: December 28, 2016
    Publication date: June 28, 2018
    Inventors: Joseph Varkey, Maria Grisanti, Paul Wanjau, David Kim, William Brian Underhill
  • Patent number: 10001613
    Abstract: A cable having a cable core for use in fracturing zones in a well, wherein the cable core includes an optical fiber conductor. The optical fiber conductor has a pair of half-shell conductors. An insulated optical fiber located between the pair of half-shell conductors. The insulated optical fiber is coupled with the pair of half-shell conductors. An optical fiber conductor jacket is disposed about the pair of half-shell conductors.
    Type: Grant
    Filed: February 23, 2015
    Date of Patent: June 19, 2018
    Assignee: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Joseph Varkey, Paul Wanjau, David Kim, Maria Grisanti, Sheng Chang
  • Publication number: 20170323705
    Abstract: A method and method of using a cable that includes a cable core. The cable core has an inner armor wire layer disposed thereabout. The inner armor wire layer has an outer armor wire layer disposed thereabout. The inner armor wire layer and outer armor wire layer have torque removed therefrom during manufacturing.
    Type: Application
    Filed: July 21, 2017
    Publication date: November 9, 2017
    Inventors: Joseph Varkey, Sheng Chang, Burcu Unal Altintas, Qingdi Huang, Jeffrey Joseph Kamps, Paul Wanjau
  • Patent number: 9575189
    Abstract: Systems, methods, and devices involving segmented radiation detectors are provided. For example, a segmented radiation detector may include a segmented scintillator and an optical-to-electrical converter. The segmented scintillator may have several segments that convert radiation to light, at least one of which may detect radiation arriving from an azimuthal angle around an axis of the segmented scintillator. The optical-to-electrical converter may be coupled to the segmented scintillator. The optical-to-electrical converter may receive the light from the segments of the segmented scintillator and output respective electrical signals corresponding to the amount of radiation detected by each segment.
    Type: Grant
    Filed: October 28, 2011
    Date of Patent: February 21, 2017
    Assignee: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Joel L. Groves, Patrice Ligneul, Robert A. Adolph, Paul Wanjau, Tim Quinlan, Jack Purcell
  • Publication number: 20170001415
    Abstract: A wire includes a ferrous core. The ferrous core can be coated. The coatings can include nickel, molybdenum, zinc and Fe. A process of forming a wire can include placing a metal strip alongside a ferrous wire core, bending the strip around the core, and seam welding the strip to form a metal tube around the core. The process of forming a wire can include applying a metal layer to a ferrous metal rod to form a plated rod, placing a metal strip alongside the rod, bending the strip around the rod, and seam welding the strip to form a metal tube around the rod. The process of forming a wire can include coating a ferrous wire core with a layer of nickel, molybdenum or a nickel alloy that circumferentially surrounds the ferrous wire core.
    Type: Application
    Filed: September 14, 2016
    Publication date: January 5, 2017
    Inventors: Trevor Hughes, Joseph Varkey, Vadim Protasov, Evgeny Barmatov, Paul Wanjau
  • Publication number: 20170004905
    Abstract: A cable that includes a cable core. The cable core has an inner armor wire layer disposed thereabout. The inner armor wire layer has an outer armor wire layer disposed thereabout. The inner armor wire layer and outer armor wire layer have torque removed therefrom during manufacturing.
    Type: Application
    Filed: June 30, 2015
    Publication date: January 5, 2017
    Inventors: Joseph Varkey, Sheng Chang, Burcu Unal Altintas, Qingdi Huang, Jeffrey Joseph Kamps, Paul Wanjau
  • Patent number: 9446565
    Abstract: A wire includes a ferrous core. The ferrous core can be coated. The coatings can include nickel, molybdenum, zinc and Fe. A process of forming a wire can include placing a metal strip alongside a ferrous wire core, bending the strip around the core, and seam welding the strip to form a metal tube around the core. The process of forming a wire can include applying a metal layer to a ferrous metal rod to form a plated rod, placing a metal strip alongside the rod, bending the strip around the rod, and seam welding the strip to form a metal tube around the rod. The process of forming a wire can include coating a ferrous wire core with a layer of nickel, molybdenum or a nickel alloy that circumferentially surrounds the ferrous wire core.
    Type: Grant
    Filed: August 27, 2014
    Date of Patent: September 20, 2016
    Assignee: Schlumberger Technology Corporation
    Inventors: Trevor Hughes, Joseph Varkey, Vadim Protasov, Evgeny Barmatov, Paul Wanjau
  • Publication number: 20160059519
    Abstract: A wire includes a ferrous core. The ferrous core can be coated. The coatings can include nickel, molybdenum, zinc and Fe. A process of forming a wire can include placing a metal strip alongside a ferrous wire core, bending the strip around the core, and seam welding the strip to form a metal tube around the core. The process of forming a wire can include applying a metal layer to a ferrous metal rod to form a plated rod, placing a metal strip alongside the rod, bending the strip around the rod, and seam welding the strip to form a metal tube around the rod. The process of forming a wire can include coating a ferrous wire core with a layer of nickel, molybdenum or a nickel alloy that circumferentially surrounds the ferrous wire core.
    Type: Application
    Filed: August 27, 2014
    Publication date: March 3, 2016
    Inventors: Trevor Hughes, Joseph Varkey, Vadim Protasov, Evgeny Barmatov, Paul Wanjau
  • Publication number: 20160024902
    Abstract: Method and system for multi-stage well treatment wherein an isolating device is tethered with a distributed measurement cable during the treatment of one or more stages. The cable having a cable core including an optical fiber conductor.
    Type: Application
    Filed: May 12, 2015
    Publication date: January 28, 2016
    Inventors: Peter John Richter, Alejandro Andres Pena Gonzalez, Bruno Lecerf, Dmitriy Usoltsev, Paul Wanjau, Joseph Varkey, David Geehyun Kim, Maria Auxiliadora Grisanti, Sheng Chang
  • Publication number: 20160025945
    Abstract: A cable having a cable core for use in fracturing zones in a well, wherein the cable core includes an optical fiber conductor. The optical fiber conductor has a pair of half-shell conductors. An insulated optical fiber located between the pair of half-shell conductors. The insulated optical fiber is coupled with the pair of half-shell conductors. An optical fiber conductor jacket is disposed about the pair of half-shell conductors.
    Type: Application
    Filed: February 23, 2015
    Publication date: January 28, 2016
    Inventors: Paul Wanjau, Joseph Varkey, David Kim, Maria Grisanti, Sheng Chang