Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10018004 | Method and apparatus for casing entry | William R. Abrant, Charles Butterfield | 2018-07-10 |
| 9915099 | Drill bit for a drilling apparatus | — | 2018-03-13 |
| 9598906 | Method and apparatus for vibrating horizontal drill string to improve weight transfer | — | 2017-03-21 |
| 9523244 | Drill bit for a drilling apparatus | — | 2016-12-20 |
| 9200510 | System and method for estimating directional characteristics based on bending moment measurements | John D. Macpherson | 2015-12-01 |
| 9093875 | Downhole apparatus for electrical power generation from shaft flexure | William E. Beasley, Jr. | 2015-07-28 |
| 8011450 | Active bottomhole pressure control with liner drilling and completion systems | Sven Krueger, Detlef Hahn, Volker Krueger, Peter Aronstam, Harald Grimmer +2 more | 2011-09-06 |
| 7650241 | Use of the dynamic downhole measurements as lithology indicators | Pushkar N. Jogi, Joachim Oppelt, Volker Krueger, John D. Macpherson | 2010-01-19 |
| 7591314 | Measurement-while-fishing tool devices and methods | James Sonnier, Robbie B. Colbert, James W. Anderson, Blake C. Pizzolato, Johnny C. Hicks | 2009-09-22 |
| 7503403 | Method and apparatus for enhancing directional accuracy and control using bottomhole assembly bending measurements | Pushkar N. Jogi, Michael Neubert, John D. Macpherson, James A. Hood, Thomas Dahl +2 more | 2009-03-17 |