Patents Assigned to Energieversorgung Weser-Ems AG
  • Method for the removal of aqueous liquids from the sump of an underground cavity
    Patent number: 5147147
    Abstract: A method for the removal of water or aqueous liquids from the sump of an underground cavity, especially a cavern, is based on providing a process in which a water-miscible organic liquid is added to the sump, and then the mixture formed in this way is extracted from the cavity.
    Type: Grant
    Filed: August 22, 1990
    Date of Patent: September 15, 1992
    Assignee: Energieversorgung Weser-Ems AG
    Inventors: Harald Peterson, Jurgen Martens, Werner Harms, Uwe Kramer