Patents by Inventor John David Struthers

John David Struthers 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).

  • Cable bypass and method for controlled entry of a tubing string and a cable adjacent thereto
    Patent number: 9458677
    Abstract: A system and method is provided for the controlled entry of a tubing string, and cable adjacent thereto, into a wellbore. A stationary housing is fit to a wellhead and has a bore in communication with the wellbore. The cable can be laterally displaced from the bore into a cable access formed into the side wall of the stationary housing for fitting a sealing assembly to the bore and engages a sealing surface therein. The sealing assembly seals tubulars passing therethrough. The cable access interrupts the sealing surface. A cable bypass sub is fit to the cable access and permits the cable to extend sealingly from above the sealing surface to the wellbore wherein the cable bypasses the sealing assembly and sealing surface. A seal reconstitutes the interrupted portion of the sealing surface at the cable access.
    Type: Grant
    Filed: June 12, 2013
    Date of Patent: October 4, 2016
    Assignee: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: John David Struthers, George James Michaud, Lawrence Gerald Cyr, Salem Ahmed Lotfi Elsayed
  • CABLE BYPASS AND METHOD FOR CONTROLLED ENTRY OF A TUBING STRING AND A CABLE ADJACENT THERETO
    Publication number: 20130292139
    Abstract: A system and method is provided for the controlled entry of a tubing string, and cable adjacent thereto, into a wellbore. A stationary housing is fit to a wellhead and has a bore in communication with the wellbore. The cable can be laterally displaced from the bore into a cable access formed into the side wall of the stationary housing for fitting a sealing assembly to the bore and engages a sealing surface therein. The sealing assembly seals tubulars passing therethrough. The cable access interrupts the sealing surface. A cable bypass sub is fit to the cable access and permits the cable to extend sealingly from above the sealing surface to the wellbore wherein the cable bypasses the sealing assembly and sealing surface. A seal reconstitutes the interrupted portion of the sealing surface at the cable access.
    Type: Application
    Filed: June 12, 2013
    Publication date: November 7, 2013
    Applicant: Schlumberger Technology Corporation
    Inventors: John David Struthers, George James Michaud, Lawrence Gerald Cyr, Salem Ahmed Lotfi Elsayed
  • Cable bypass and method for controlled entry of a tubing string and a cable adjacent thereto
    Patent number: 8573294
    Abstract: A system and methodology for controlled entry of a tubing string, and cable adjacent thereto, into a wellbore. A stationary housing is fit to a wellhead and has a bore in communication with the wellbore. The cable can be laterally displaced from the bore into a cable access formed into the housing's side wall for fitting a sealing assembly to the bore and engages a sealing surface therein. The sealing assembly seals tubulars passing therethrough. The cable access interrupts the sealing surface. A cable bypass sub is fit to the cable access and permits the cable to extend sealingly from above the sealing surface to the wellbore wherein the cable bypasses the sealing assembly and sealing surface. A seal reconstitutes the interrupted portion of the sealing surface at the cable access.
    Type: Grant
    Filed: July 23, 2010
    Date of Patent: November 5, 2013
    Assignee: Schlumberger Technology Corporation
    Inventors: John David Struthers, George James Michaud, Lawrence Gerald Cyr, Salem Ahmed Lotfi Elsayed
  • CABLE BYPASS AND METHOD FOR CONTROLLED ENTRY OF A TUBING STRING AND A CABLE ADJACENT THERETO
    Publication number: 20110174501
    Abstract: A system and methodology for controlled entry of a tubing string, and cable adjacent thereto, into a wellbore. A stationary housing is fit to a wellhead and has a bore in communication with the wellbore. The cable can be laterally displaced from the bore into a cable access formed into the housing's side wall for fitting a sealing assembly to the bore and engages a sealing surface therein. The sealing assembly seals tubulars passing therethrough. The cable access interrupts the sealing surface. A cable bypass sub is fit to the cable access and permits the cable to extend sealingly from above the sealing surface to the wellbore wherein the cable bypasses the sealing assembly and sealing surface. A seal reconstitutes the interrupted portion of the sealing surface at the cable access.
    Type: Application
    Filed: July 23, 2010
    Publication date: July 21, 2011
    Applicant: Schlumberger Technology Corporation
    Inventors: John David Struthers, George James Michaud, Lawrence Gerald Cyr, Salem Ahmed Lotfi Elsayed