Patents Assigned to Electromagnetic Geoservices AS
  • Method and apparatus for recovering hydrocarbons from subterranean reservoirs
    Patent number: 7145341
    Abstract: The present invention relates to a system and apparatus for detecting and recovering hydrocarbons located in a subterranean reservoir In some embodiments, an electromagnetic field is applied by a transmitter positioned on a seabed and detected by antenna also positioned on the seabed.
    Type: Grant
    Filed: August 17, 2004
    Date of Patent: December 5, 2006
    Assignee: Electromagnetic Geoservices AS
    Inventors: Svein Ellingsrud, Terje Eidesmo, Fan-Nian Kong, Harald Westerdahl
  • Method and apparatus for determining the nature of subterranean reservoirs
    Patent number: 7038456
    Abstract: A system for detecting or determining the nature of a subterranean reservoir. An electromagnetic field is applied using a dipole antenna transmitter and this is detected using a dipole antenna receiver. The measurements are taken with the antenna both in-line and parallel and the difference between the two sets of measurements is exploited. A characteristic difference indicates a high resistive layer, which corresponds to a hydrocarbon reservoir.
    Type: Grant
    Filed: August 2, 2001
    Date of Patent: May 2, 2006
    Assignee: Electromagnetic Geoservices AS
    Inventors: Svein Ellingsrud, Terje Eidesmo, Tor Schaug-Pettersen