Patents Assigned to Norgas Geotekniske Institut
  • Electromagnetic surveying for mapping the content of subterranean reservoirs
    Patent number: 7026819
    Abstract: A method for mapping a submarine or subterranean reservoir by conducting an electromagnetic survey using an electromagnetic field in the form of a wave. An electromagnetic field is applied by a transmitter on the seabed and detected by antennae. The nature of the detected reflected waves is used to determine whether the reservoir contains water or hydrocarbons, which may then be produced from a well that penetrates the reservoir.
    Type: Grant
    Filed: July 22, 2003
    Date of Patent: April 11, 2006
    Assignees: Statoil ASA, Norgas Geotekniske Institut
    Inventors: Terje Eidesmo, Svein Ellingsrud, Fan-Nian Kong, Harald Westerdahl, Stale Johansen