Issued Patents All Time
Showing 1–25 of 45 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10324218 | Electromagnetic assessment of multiple conductive tubulars | James J. Kohring, Rafael Vinit | 2019-06-18 |
| 10024995 | System and method for elevated source to borehole electromagnetic survey | Garrett Kramer, Michael J. Wilt, Luis Eduardo DePavia, H. Frank Morrison | 2018-07-17 |
| 10012753 | Measurement compensation using multiple electromagnetic transmitters | Emmanuel Legendre, Jean-Luc Le Calvez | 2018-07-03 |
| 9746309 | Remote field testing using a permeable core | — | 2017-08-29 |
| 9625604 | Analyzing subterranean formation with current source vectors | Nestor Cuevas, David Alumbaugh | 2017-04-18 |
| 9587485 | Methods and apparatus to detect fluid distributions | Gaelle Jannin, Emmanuel Legendre | 2017-03-07 |
| 9377556 | Systems and methods for electromagnetic detection of a formation anomaly from a near bit location while drilling | David Alumbaugh, Cengiz Esmersoy | 2016-06-28 |
| 8947093 | Electromagnetic survey using naturally occurring electromagnetic fields as a source | David Alumbaugh, Nestor Cuevas | 2015-02-03 |
| 8731987 | Method and apparatus to automatically recover well geometry from low frequency electromagnetic signal measurements | Jiuping Chen, Ping Zhang, Michael J. Wilt, David Alumbaugh | 2014-05-20 |
| 8638103 | Electromagnetic logging between borehole and surface | Richard A. Rosthal, John R. Lovell, Christopher C. Bogath | 2014-01-28 |
| 8326539 | Characterizing at least one property of a liner that lines a well | Frank Morrison, Richard A. Rosthal, Hong Zhang, Luis E. Depavia | 2012-12-04 |
| 8289025 | Deriving an electromagnetic field in one direction based on measurement data of one or more sensing elements for measuring an electromagnetic field in another direction | Nestor Cuevas | 2012-10-16 |
| 8181057 | Time synchronization in units at different locations | Yuji Hosoda, Thor Johnsen, Vamsi Vytla, Hong Zhang, Luis E. Depavia | 2012-05-15 |
| 8010291 | Processing measurement data that involves computing a derivative of the measurement data that represents a subterranean structure | Jiuping Chen, David Alumbaugh, Stephen Allan Horne, Kevin Eyl | 2011-08-30 |
| 8008921 | Surveying using vertical electromagnetic sources that are towed along with survey receivers | David Alumbaugh, Andrea Zerilli, H. Frank Morrison, Martin Howlid, James Brady +2 more | 2011-08-30 |
| 7991553 | Method and system for removing effects of conductive casings and wellbore and surface heterogeneity in electromagnetic imaging surveys | David Alumbaugh, Ping Zhang, Frank Morrison, Aria Abubakar, Tarek M. Habashy | 2011-08-02 |
| 7949470 | Processing measurement data in a deep water application | David Alumbaugh, Jiuping Chen, Kevin Eyl, Stephen Allan Horne | 2011-05-24 |
| 7928732 | Subsurface conductivity imaging systems and methods | — | 2011-04-19 |
| 7880469 | Surveying method using an arrangement of plural signal sources | David Alumbaugh, Jiuping Chen, Kevin Eyl, Stephen Allan Horne | 2011-02-01 |
| 7826972 | Methods of electromagnetic logging using a current focusing receiver | Kamal Babour, Christian Besson, Kambiz A. Safinya, Philip Heelan | 2010-11-02 |
| 7825664 | Resistivity tool with selectable depths of investigation | Dean Homan, Michael J. Wilt, Jean Seydoux | 2010-11-02 |
| 7822553 | Methods for electromagnetic measurements and correction of non-ideal receiver responses | Christian Besson, Kamal Babour, Kambiz A. Safinya | 2010-10-26 |
| 7800373 | Method for correcting magnetic based orientation measurements for local biasing fields | Nestor Cuevas | 2010-09-21 |
| 7795872 | Determining correction factors representing effects of different portions of a lining structure | Brian Clark, Frank Morrison, Hong Zhang, Richard A. Rosthal | 2010-09-14 |
| 7659724 | Surveying method using an arrangement of plural signal sources | David Alumbaugh, Jiuping Chen, Kevin Eyl, Stephen Allan Horne | 2010-02-09 |