| 12104442 |
System, method and apparatus for hydraulic downhole stick-slip mitigation |
Jovan Vracar, David Devlin |
2024-10-01 |
| 11873686 |
System, method and apparatus for downhole torque-transferring ball screw |
David Devlin, Jovan Vrcar |
2024-01-16 |
| 11851955 |
Downhole tool with radial shock absorber and stabilizer |
David Devlin |
2023-12-26 |
| 11713665 |
Systems, methods, and devices for directionally drilling an oil well while rotating including remotely controlling drilling equipment |
David Devlin, Vladimir Jorgic |
2023-08-01 |
| 11299936 |
Slide reamer and stabilizer tool |
Jovan Vacar, Milan Rajic |
2022-04-12 |
| 11149525 |
System, method and apparatus for controlling fluid flow through drill string |
David S. Cramer |
2021-10-19 |
| 11041351 |
Downhole flow diversion device with oscillation damper |
David S. Cramer, David Devlin |
2021-06-22 |
| 10794117 |
Slide reamer and stabilizer tool |
Jovan Vacar, Milan Rajic |
2020-10-06 |
| 10544637 |
Downhole flow diversion device with oscillation damper |
David S. Cramer, David Devlin |
2020-01-28 |
| 10113367 |
Slide reamer and stabilizer tool |
Jovan Vacar, Milan Rajic |
2018-10-30 |
| 10107073 |
System, method and apparatus for controlling fluid flow through drill string |
David S. Cramer |
2018-10-23 |
| 9840875 |
Slide reamer and stabilizer tool |
Jovan Vacar, Milan Rajic |
2017-12-12 |
| 9328576 |
System, method and apparatus for controlling fluid flow through drill string |
David S. Cramer |
2016-05-03 |
| 9157281 |
Slide reamer and stabilizer tool |
Jovan Vacar, Milan Rajic |
2015-10-13 |
| 8826375 |
Rich media collaboration system |
Mark Smith, Kevin Anderson |
2014-09-02 |
| 7597151 |
Hydraulically operated formation isolation valve for underbalanced drilling applications |
Fredrick D. Curtis, Ronald E. Hyden, Jimmie R. Williamson, Jr., James Dan Vick, Jr. |
2009-10-06 |
| 6962215 |
Underbalanced well completion |
Fredrick D. Curtis, Derrick W. Lewis, Dale Ray |
2005-11-08 |
| 4546161 |
Media for affinity chromatography |
Anthony Atkinson |
1985-10-08 |