Issued Patents All Time
Showing 1–22 of 22 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11733418 | P/S wave measurement and compensation | Mark W. Thompson, Lasse Amundsen | 2023-08-22 |
| 11181654 | Method for deghosting seismic data | Ben King, Marit Stustad Guttormsen, Svend ØSTMO | 2021-11-23 |
| 10386520 | Seismic sensor recording system | Peter Hanssen, Per Sparrevik, Stephen Walter HAYES, Klaus TRONSTAD | 2019-08-20 |
| 10365388 | P/S wave measurement and compensation | Mark W. Thompson, Lasse Amundsen | 2019-07-30 |
| 9389323 | Apparatus for marine seismic survey | Lasse Amundsen, Mark W. Thompson | 2016-07-12 |
| 9081111 | Method of providing seismic data | Lasse Amundsen, Mark W. Thompson | 2015-07-14 |
| 7982465 | Electromagnetic method on shallow water using a controlled source | Svein Erling Johnstad, Brian Anthony Farrelly | 2011-07-19 |
| 7456632 | Method for monitoring low-resistivity formation using polarized waves | Svein Erling Johnstad, Fan-Nian Kong | 2008-11-25 |
| 7453265 | Device for monitoring of oil-water interface | Svein Erling Johnstad, Fan-Nian Kong | 2008-11-18 |
| 7145341 | Method and apparatus for recovering hydrocarbons from subterranean reservoirs | Svein Ellingsrud, Terje Eidesmo, Fan-Nian Kong | 2006-12-05 |
| 7026819 | Electromagnetic surveying for mapping the content of subterranean reservoirs | Terje Eidesmo, Svein Ellingsrud, Fan-Nian Kong, Stale Johansen | 2006-04-11 |
| 6900639 | Electromagnetic method and apparatus for determining the nature of subterranean reservoirs using refracted electromagnetic waves | Svein Ellingsrud, Terje Eidesmo, Fan-Nian Kong | 2005-05-31 |
| 6864684 | Electromagnetic methods and apparatus for determining the content of subterranean reservoirs | Svein Ellingsrud, Terje Eidesmo, Fan-Nian Kong | 2005-03-08 |
| 6859038 | Method and apparatus for determining the nature of subterranean reservoirs using refracted electromagnetic waves | Svein Ellingsrud, Terje Eidesmo, Fan-Nian Kong | 2005-02-22 |
| 6717411 | Electromagnetic method and apparatus for determining the nature of subterranean reservoirs using refracted electromagnetic waves | Svein Ellingsrud, Terje Eidesmo, Fan-Nian Kong | 2004-04-06 |
| 6714153 | Device for electromagnetic detection of geological properties in a well | Fan-Nian Kong, Svein Ellingsrud, Vidar Sten-Halvorsen, Einar Stølen, Terje Eidesmo | 2004-03-30 |
| 6696839 | Electromagnetic methods and apparatus for determining the content of subterranean reservoirs | Svein Ellingsrud, Terje Eidesmo, Fan-Nian Kong | 2004-02-24 |
| 6628119 | Method and apparatus for determining the content of subterranean reservoirs | Terje Eidesmo, Svein Ellingsrud, Fan-Nian Kong, Stale Johansen | 2003-09-30 |
| 6612397 | Shear wave generator | Per Sparrevik, Christian Madshus | 2003-09-02 |
| 6556014 | Device and method for measurement by guided waves on a metal string in a well | Fan-Nian Kong, Terje Eidesmo, Svein Ellingsrud | 2003-04-29 |
| 6525540 | Method and device for detection of em waves in a well | Fan-Nian Kong, Terje Eidesmo, Svein Ellingsrud | 2003-02-25 |
| 6480000 | Device and method for measurement of resistivity outside of a wellpipe | Fan-Nian Kong, Terje Eidesmo, Svein Ellingsrud | 2002-11-12 |