Patents Assigned to Fuji Research Institute Corporation
  • Device and method for extracting a gas hydrate
    Patent number: 6817427
    Abstract: This invention aims to provide a gas-hydrate extracting device and method whereby a high-performance jet fluid is injected from a nozzle at the tip of an extraction pipe inserted into a gas-hydrate stratum, and whereby said jet fluid breaks said stratum so as to form a gas-hydrate mixed fluid that is transferred to surface of the earth, and whereby the void resulting from the removal of said gas hydrate is filled with the components of said high-performance jet fluid and a void-refilling fluid.
    Type: Grant
    Filed: September 13, 2002
    Date of Patent: November 16, 2004
    Assignees: Tobishima Corporation, Fuji Research Institute Corporation
    Inventors: Katsuya Matsuo, Sosuke Kurosaka, Yutaka Yanagimori, Shuntaro Asano, Junji Shinoda