Patents Assigned to CARBON ENERGY LIMITED
  • Method for shortening an injection pipe for underground coal gasification
    Patent number: 9976403
    Abstract: A method for automatically shortening an injection well liner for underground coal gasification is provided in which portions of the injection well liner melt during the underground coal gasification process to shorten the injection well liner.
    Type: Grant
    Filed: August 17, 2016
    Date of Patent: May 22, 2018
    Assignee: CARBON ENERGY LIMITED
    Inventors: Burl Edward Davis, Kieran Maurice O'Leary
  • Sacrificial liner linkages for auto-shortening an injection pipe for underground coal gasification
    Patent number: 9963949
    Abstract: A sacrificial liner linkage that can be used to automatically shorten a liner for an underground coal gasification process is provided. The sacrificial liner linkage may be one or more sacrificial liner linkage portions that are spaced between one or more liner portions in which the sacrificial liner linkage portions disintegrate before the one or more liner portions to automatically shorten the liner.
    Type: Grant
    Filed: August 17, 2016
    Date of Patent: May 8, 2018
    Assignee: CARBON ENERGY LIMITED
    Inventors: Burl Edward Davis, Clifford William Mallett, Marion Russell Mark
  • Sacrificial liner linkages for auto-shortening an injection pipe for underground coal gasification
    Patent number: 9435184
    Abstract: A sacrificial liner linkage that can be used to automatically shorten a liner for an underground coal gasification process is provided. The sacrificial liner linkage may be one or more sacrificial liner linkage portions that are spaced between one or more liner portions in which the sacrificial liner linkage portions disintegrate before the one or more liner portions to automatically shorten the liner.
    Type: Grant
    Filed: June 28, 2012
    Date of Patent: September 6, 2016
    Assignee: CARBON ENERGY LIMITED
    Inventors: Burl Edward Davis, Clifford William Mallett, Marion Russell Mark
  • Method for shortening an injection pipe for underground coal gasification
    Patent number: 9428978
    Abstract: A method for automatically shortening an injection well liner for underground coal gasification is provided.
    Type: Grant
    Filed: June 28, 2012
    Date of Patent: August 30, 2016
    Assignee: CARBON ENERGY LIMITED
    Inventors: Burl Edward Davis, Kieran Maurice O'Leary