Issued Patents All Time
Showing 1–16 of 16 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10754055 | Apparatus and method for obtaining petrophysical images using electrical imager and multi-frequency dispersion measurements | Tetsushi Yamada, Tianhua Zhang, Ollivier Faivre, Jean-Marc Donadille | 2020-08-25 |
| 10689968 | Apparatus for borehole imaging including a void-containing guard electrode | Francisco de Almeida Braz | 2020-06-23 |
| 10030505 | Method for movement measurement of an instrument in a wellbore | Julien Toniolo, Peter M. Wells, Jr., Josselin Kherroubi | 2018-07-24 |
| 9921337 | Method and system for calibrating a downhole imaging tool | Laetitia Comparon, Andrew Hayman | 2018-03-20 |
| 9885805 | Method and system for calibrating a downhole imaging tool | Andrew Hayman, Laetitia Comparon | 2018-02-06 |
| 9841525 | System and method for measuring downhole parameters | Andrew Hayman, Gregoire Jacob | 2017-12-12 |
| 9651704 | Systems and methods for resistivity measurement at multiple angles of rotation | — | 2017-05-16 |
| 9488748 | System and method for generating fluid compensated downhole parameters | — | 2016-11-08 |
| 9400339 | Apparatus and method for measuring electrical properties of an underground formation | Andrew Hayman | 2016-07-26 |
| 9194971 | Apparatus and method for balancing impedance of a resistivity measuring tool | — | 2015-11-24 |
| 8776878 | Sensor for determining downhole parameters and methods for using same | Andrew Hayman | 2014-07-15 |
| 8760167 | Apparatus and method for balancing impedance of a resistivity measuring tool | — | 2014-06-24 |
| 8633702 | Apparatus and method for actively balancing impedance of a resistivity measuring tool | Emmanuel Legendre, Alain Dumont | 2014-01-21 |
| 8330466 | Method for electrical investigation of a borehole | — | 2012-12-11 |
| 8232803 | Tool for electrical investigation of a borehole | — | 2012-07-31 |
| 7265553 | Method and apparatus for imaging earth formation | Philip Cheung, Andrew Hayman, Dennis Pittman | 2007-09-04 |