Patents by Inventor David Geehyun Kim

David Geehyun Kim 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).

  • Electrically conductive fiber optic slickline for coiled tubing operations
    Patent number: 11725468
    Abstract: A slickline that includes both electrically conductive and fiber optic capacity. The slickline includes a fiber optic thread or bundle of threads disposed in a support tube and surrounded by an electrically conductive member such as tightly wound copper threads. In certain embodiments, the electrically conductive member may be provided in direct contact with the support tube without the requirement of an insulating layer. Alternatively, the tube itself may be foregone with a channel for the fiber optic thread or bundle defined by insulating material about the electrically conductive member. Either way, the overall profile of the slickline may advantageously be kept to a minimum.
    Type: Grant
    Filed: January 26, 2015
    Date of Patent: August 15, 2023
    Assignee: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Joseph Varkey, David Geehyun Kim, Maria Auxiliadora Grisanti
  • Methods and cables for use in fracturing zones in a well
    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
  • ELECTRICALLY CONDUCTIVE FIBER OPTIC SLICKLINE FOR COILED TUBING OPERATIONS
    Publication number: 20180073310
    Abstract: A slickline that includes both electrically conductive and fiber optic capacity. The slickline includes a fiber optic thread or bundle of threads disposed in a support tube and surrounded by an electrically conductive member such as tightly wound copper threads. In certain embodiments, the electrically conductive member may be provided in direct contact with the support tube without the requirement of an insulating layer. Alternatively, the tube itself may be foregone with a channel for the fiber optic thread or bundle defined by insulating material about the electrically conductive member. Either way, the overall profile of the slickline may advantageously be kept to a minimum.
    Type: Application
    Filed: January 26, 2015
    Publication date: March 15, 2018
    Inventors: Joseph VARKEY, David Geehyun KIM, Maria Auxiliadora GRISANTI
  • METHODS AND CABLES FOR USE IN FRACTURING ZONES IN A WELL
    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