Issued Patents All Time
Showing 1–25 of 30 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10858929 | Methods for drilling multiple parallel wells with passive magnetic ranging | Catalina Leal | 2020-12-08 |
| 10801318 | Directional sensor with means for adjusting cancellation of interfering electromagnetic field | Randolph Dharamchan Depoo, Mark Wayne HAYENGA | 2020-10-13 |
| 10378330 | Extending the range of a MEMS gyroscope using eccentric accelerometers | Randell Riggs | 2019-08-13 |
| 9970268 | Apparatus and methods for oriented-fracturing of formations | Kelly D. Ireland | 2018-05-15 |
| 9963936 | Downhole closed loop drilling system with depth measurement | Thomas Kruspe, Rocco DiFoggio, Francis Chad Hanak | 2018-05-08 |
| 9804288 | Real-time, limited orientation sensor auto-calibration | Randy R. Riggs, Francis Chad Hanak, John F. Priest | 2017-10-31 |
| 9605527 | Reducing rotational vibration in rotational measurements | Arcady Reiderman, Fei Le, Hanno Reckmann, Christian Herbig | 2017-03-28 |
| 9422803 | Passive magnetic ranging for SAGD and relief wells via a linearized trailing window kalman filter | Francis Chad Hanak | 2016-08-23 |
| 9411065 | Measurement while drilling spontaneous potential indicator using differential magnetometers | — | 2016-08-09 |
| 9163498 | Apparatus and methods for determining parameters downhole using gravity-affected sensor | Paul Cairns, Kurt J. Kuck | 2015-10-20 |
| 9157310 | Tripping indicator for MWD systems | Jonathan R. Bynum | 2015-10-13 |
| 8987924 | Self-tuning energy harvester | — | 2015-03-24 |
| 8899322 | Autonomous downhole control methods and devices | Gary J. Cresswell, William Befeld | 2014-12-02 |
| 8528637 | Downhole depth computation methods and related system | Gary J. Cresswell, William Befeld | 2013-09-10 |
| 8131494 | Rotatable orientation independent gravity sensor and methods for correcting systematic errors | Daniel T. Georgi, Carl M. Edwards, Sheng Fang, Rocco DiFoggio | 2012-03-06 |
| 8122954 | Downhole depth computation methods and related system | Jerry Cerkovnik, Gary J. Cresswell, William Befeld | 2012-02-28 |
| 8113041 | Gravitational method and apparatus for measuring true vertical depth in a borehole | Rocco DiFoggio, Daniel T. Georgi | 2012-02-14 |
| 7813878 | Gyroscopic steering tool using only a two-axis rate gyroscope and deriving the missing third axis | Jonathan R. Bynum, Randell Riggs, David M. Epplin | 2010-10-12 |
| 7763845 | Downhole navigation and detection system | Rocco DiFoggio, Eric Molz, Constantyn Chalitsios, Philip L. Kurkoski | 2010-07-27 |
| 7252144 | Magnetometers for measurement-while-drilling applications | Roger Cruz, Brent D. Hope, Nico Foekema | 2007-08-07 |
| 7234540 | Gyroscopic steering tool using only a two-axis rate gyroscope and deriving the missing third axis | Jonathan R. Bynum, Randell Riggs, David M. Epplin | 2007-06-26 |
| 7195062 | Measurement-while-drilling assembly using real-time toolface oriented measurements | Paul Cairns, Sergey Efremov, David M. Schneider, Sassan Dehlavi, Samuel R. Bell | 2007-03-27 |
| 7114565 | Measurement-while-drilling assembly using real-time toolface oriented measurements | Roland E. Chemali | 2006-10-03 |
| 7000700 | Measurement-while-drilling assembly using real-time toolface oriented measurements | Paul Cairns, Sergey Efremov, David M. Schneider, Sassan Dehlavi, Samuel R. Bell | 2006-02-21 |
| 6842699 | Use of MWD assembly for multiple-well drilling | — | 2005-01-11 |