Patents by Inventor Jushik Yun

Jushik Yun 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).

  • Publication number: 20120097419
    Abstract: A cable includes an electrically conductive cable core for transmitting electrical power and data, an insulative/protective layer circumferentially disposed around the core, an inner armor wire layer including a plurality of armor wires disposed around the cable core and the insulative layer, wherein at least one of the armor wires of the inner armor wire layer is bonded to the insulative layer, and an outer armor wire layer including a plurality of armor wires disposed around the inner armor wire layer. At least one of the armor wires of the outer armor wire layer can be bonded to the at least one of the armor wires of the inner armor wire layer.
    Type: Application
    Filed: October 12, 2011
    Publication date: April 26, 2012
    Inventors: Joseph Varkey, Vadim Protasov, Jushik Yun, Sheng Chang
  • Patent number: 8034875
    Abstract: Compositions including a thermoplastic elastomer or thermoplastic vulcanizate derived from a styrenic block copolymer having a reactive or crosslinkable hard block including aromatic vinyl repeat units and also preferably a crosslinkable soft block, and a non-olefin thermoplastic polymer or copolymer and preferably a compatibilizer such as the reaction product of a non-olefin thermoplastic polymer and a functionalized polymer such as a maleic anhydride functionalized styrenic block copolymer that is compatible with the styrenic block copolymer having a reactive or crosslinkable hard block, and optionally a linking compound. The vulcanizates are prepared by crosslinking the styrenic block copolymer in the presence of the non-olefin thermoplastic polymer and a suitable crosslinking agent, and optionally the compatibilizer, preferably utilizing dynamic vulcanization.
    Type: Grant
    Filed: October 25, 2010
    Date of Patent: October 11, 2011
    Assignee: Teknor Apex Company
    Inventors: Darnell C. Worley, II, Elliot ByungHwa Lee, Raman Patel, Jushik Yun
  • Publication number: 20110240312
    Abstract: A technique facilitates the employment of an electric submersible pumping system or other well system downhole into a wellbore. The electric motor system is coupled with a signal carrying cable for conveyance to a desired downhole location in the wellbore. The signal carrying cable is constructed with sufficient strength to solely support the electric motor system during deployment and use in the wellbore without addition of a separate supporting mechanism.
    Type: Application
    Filed: February 24, 2011
    Publication date: October 6, 2011
    Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Joseph Varkey, Allan D. Ross, Hifzi Ardic, Willem Wijnberg, Jushik Yun, Jose Ramon Lozano-Gendreau
  • Patent number: 7915532
    Abstract: An electrical cable having a polymeric inner layer enclosing a cable core, and a polymeric outer layer enclosing the cable core and the inner layer. The outer layer operable to maintain integrity of the cable within a predetermined temperature range.
    Type: Grant
    Filed: June 6, 2008
    Date of Patent: March 29, 2011
    Assignee: WesternGeco L.L.C.
    Inventors: Joseph Varkey, Byong Un Kim, Jushik Yun, Willem A. Wijnberg, Montie W. Morrison
  • Patent number: 7912333
    Abstract: A powered fiber optic cable for use in a hydrocarbon well of extensive depth and/or deviation. The cable may couple to a downhole tool for deployment to well locations of over 30,000 feet in depth while maintaining effective surface communication and powering of the tool. The cable may be configured to optimize volume within a core thereof by employing semi-circular forward and return power conducting portions about a central fiber optic portion. As such, the cable may maintain a lightweight character and a low profile of less than about 0.5 inches in diameter in spite of powering requirements for the downhole tool or the extensive length of the cable itself.
    Type: Grant
    Filed: February 4, 2009
    Date of Patent: March 22, 2011
    Assignee: Schlumberger Technology Corporation
    Inventors: Joseph Varkey, Vladimir Hernandez-Solis, Surya Simanjuntak, Vadim Protasov, Byong Jun Kim, Jushik Yun, Jose Ramon Lozano-Gendreau
  • Publication number: 20110040047
    Abstract: Compositions including a thermoplastic elastomer or thermoplastic vulcanizate derived from a styrenic block copolymer having a reactive or crosslinkable hard block including aromatic vinyl repeat units and also preferably a crosslinkable soft block, and a non-olefin thermoplastic polymer or copolymer and preferably a compatibilizer such as the reaction product of a non-olefin thermoplastic polymer and a functionalized polymer such as a maleic anhydride functionalized styrenic block copolymer that is compatible with the styrenic block copolymer having a reactive or crosslinkable hard block, and optionally a linking compound. The vulcanizates are prepared by crosslinking the styrenic block copolymer in the presence of the non-olefin thermoplastic polymer and a suitable crosslinking agent, and optionally the compatibilizer, preferably utilizing dynamic vulcanization.
    Type: Application
    Filed: October 25, 2010
    Publication date: February 17, 2011
    Applicant: Teknor Apex Company
    Inventors: Darnell C. Worley, II, Elliot ByungHwa Lee, Raman Patel, Jushik Yun
  • Patent number: 7847024
    Abstract: Compositions including a thermoplastic elastomer or thermoplastic vulcanizate derived from a styrenic block copolymer having a reactive or crosslinkable hard block including aromatic vinyl repeat units and also preferably a crosslinkable soft block, and a non-olefin thermoplastic polymer or copolymer and preferably a compatibilizer such as the reaction product of a non-olefin thermoplastic polymer and a functionalized polymer such as a maleic anhydride functionalized styrenic block copolymer that is compatible with the styrenic block copolymer having a reactive or crosslinkable hard block, and optionally a linking compound. The vulcanizates are prepared by crosslinking the styrenic block copolymer in the presence of the non-olefin thermoplastic polymer and a suitable crosslinking agent, and optionally the compatibilizer, preferably utilizing dynamic vulcanization.
    Type: Grant
    Filed: February 23, 2007
    Date of Patent: December 7, 2010
    Assignee: Teknor Apex Company
    Inventors: Darnell C. Worley, II, Elliot ByungHwa Lee, Raman Patel, Jushik Yun
  • Publication number: 20100263904
    Abstract: A torque-balanced, gas-blocking wireline cable and a method of making the cable includes an electrically conductive cable core for transmitting electrical power and surrounding inner and outer layers of a plurality of armor wires. Gas blocking is achieved by placing a soft polymer layer over the core before the inner wires are cabled thereon. The inner wires imbed partially into the soft polymer layer such that no gaps are left between the inner wires and the core. A second soft polymer layer is optionally extruded over the inner wires before the outer wires are applied. The second soft polymer layer fills any spaces between the inner and outer wire layers and prevents pressurized gas from infiltrating between the wires. The inner wires have larger diameters than the outer wires such that the inner wires carry approximately 60% of the load and torque imbalance is prevented.
    Type: Application
    Filed: April 17, 2009
    Publication date: October 21, 2010
    Inventors: Joseph Varkey, Sheng Chang, Byong Jun Kim, Jushik Yun
  • Publication number: 20100258323
    Abstract: An embodiment of a pressure control assembly for a wireline cable disposed in a wellbore comprises a housing frame, at least a pair of sealing devices disposed in the housing, the sealing devices defining an aperture for a cable to pass therethrough and a chamber therebetween, and a lubricant recirculation system for injecting and recirculating a lubricant into the chamber, the assembly operable to lubricate the cable and seal the cable, and maintain a predetermined pressure within the housing frame while the cable is disposed therein.
    Type: Application
    Filed: March 12, 2010
    Publication date: October 14, 2010
    Inventors: Joseph Varkey, Vadim Protasov, Jushik Yun
  • Publication number: 20090242194
    Abstract: A hydrocarbon application cable of reduced nylon with increased flexibility and useful life. The cable may be of a hose or solid configuration and particularly beneficial for use in marine operations. A power and data communicative core of the cable may be surrounded by a lightweight intermediate polymer layer of a given hardness which is ultimately then surrounded by an outer polymer jacket having a hardness that is greater than the given hardness. Thus, a lighter weight polymer is provided interior of the outer polymer jacket, which may be of nylon or other suitably hard material. As such, the overall weight and cost of the cable may be substantially reduced.
    Type: Application
    Filed: March 24, 2009
    Publication date: October 1, 2009
    Inventors: Joseph Varkey, Jushik Yun, Byong Jun Kim
  • Publication number: 20090196557
    Abstract: A powered fiber optic cable for use in a hydrocarbon well of extensive depth and/or deviation. The cable may couple to a downhole tool for deployment to well locations of over 30,000 feet in depth while maintaining effective surface communication and powering of the tool. The cable may be configured to optimize volume within a core thereof by employing semi-circular forward and return power conducting portions about a central fiber optic portion. As such, the cable may maintain a lightweight character and a low profile of less than about 0.5 inches in diameter in spite of powering requirements for the downhole tool or the extensive length of the cable itself.
    Type: Application
    Filed: February 4, 2009
    Publication date: August 6, 2009
    Inventors: Joseph Varkey, Vladimir Hernandez-Solis, Surya Simanjuntak, Vadim Protasov, Byong Jun Kim, Jushik Yun, Jose Ramon Lozano-Gendreau
  • Publication number: 20080302556
    Abstract: An electrical cable comprises a cable core comprising at least one electrical conductor, at least one polymeric inner layer enclosing the cable core, and at least one polymeric outer layer enclosing the cable core and the inner layer to form the electrical cable, the outer layer operable to maintain integrity of the cable within a predetermined temperature range.
    Type: Application
    Filed: June 6, 2008
    Publication date: December 11, 2008
    Inventors: Joseph Varkey, Byong Un Kim, Jushik Yun, Willem A. Wijnberg, Montie W. Morrison
  • Publication number: 20080207832
    Abstract: Compositions including a thermoplastic elastomer or thermoplastic vulcanizate derived from a styrenic block copolymer having a reactive or crosslinkable hard block including aromatic vinyl repeat units and also preferably a crosslinkable soft block, and a non-olefin thermoplastic polymer or copolymer and preferably a compatibilizer such as the reaction product of a non-olefin thermoplastic polymer and a functionalized polymer such as a maleic anhydride functionalized styrenic block copolymer that is compatible with the styrenic block copolymer having a reactive or crosslinkable hard block, and optionally a linking compound. The vulcanizates are prepared by crosslinking the styrenic block copolymer in the presence of the non-olefin thermoplastic polymer and a suitable crosslinking agent, and optionally the compatibilizer, preferably utilizing dynamic vulcanization.
    Type: Application
    Filed: February 23, 2007
    Publication date: August 28, 2008
    Inventors: Darnell C. Worley, Elliot ByungHwa Lee, Raman Patel, Jushik Yun