| 9234392 |
Drill bit with a flow interrupter |
Geir Hareland, Jeff Janzen, John Kaminski |
2016-01-12 |
| 8899354 |
Drill bit with a flow interrupter |
Geir Hareland, Jeff Janzen, John Kaminski |
2014-12-02 |
| 8544567 |
Drill bit with a flow interrupter |
Geir Hareland, Jeff Janzen, John Kaminski |
2013-10-01 |
| 6571888 |
Apparatus and method for directional drilling with coiled tubing |
Ian Gillis, Craig Knull |
2003-06-03 |
| 6340063 |
Steerable rotary directional drilling method |
Elis Vandenberg, Edward James Cargill, John Hardin, Terrance Dean Maxwell, Bryan James Restau +3 more |
2002-01-22 |
| 6328119 |
Adjustable gauge downhole drilling assembly |
Ian Gillis, Gary M. Crase, Charles M. Reid, Paul Donald Roberts, Christopher Konschuh +2 more |
2001-12-11 |
| 6290002 |
Pneumatic hammer drilling assembly for use in directional drilling |
Ian Gillis, James Fehr, Christopher Konschuh |
2001-09-18 |
| 6244361 |
Steerable rotary drilling device and directional drilling method |
Elis Vandenberg, Edward James Cargill, John Hardin, Terrance Dean Maxwell, Bryan James Restau +3 more |
2001-06-12 |
| 6202746 |
Fail-safe coupling for a latch assembly |
Elis Vandenberg, Ian Gillis |
2001-03-20 |
| 6158533 |
Adjustable gauge downhole drilling assembly |
Ian Gillis, Gary M. Crase, Charles M. Reid, Paul Donald Roberts |
2000-12-12 |
| 6158513 |
Multiple string completion apparatus and method |
Radu Nicolae Nistor, Ian Gillis, Timothy E. LaGrange, Benji Smith, James Fehr |
2000-12-12 |
| 5778980 |
Multicut casing window mill and method for forming a casing window |
Elis Vandenberg, Ian Gillis |
1998-07-14 |
| 5762143 |
System and method for placement and retrieval of a subsurface diverting tool used in drilling and completing wells |
Elis Vandenberg, Ian Gillis |
1998-06-09 |
| RE35790 |
System for drilling deviated boreholes |
Randal H. Pustanyk |
1998-05-12 |
| 5615740 |
Internal pressure sleeve for use with easily drillable exit ports |
Ian Gillis, Elis Vandenberg |
1997-04-01 |
| 5602541 |
System for drilling deviated boreholes |
Randal H. Pustanyk, Nicholas Peter Wallis |
1997-02-11 |
| 5579829 |
Keyless latch for orienting and anchoring downhole tools |
Elis Vandenberg |
1996-12-03 |
| 5410303 |
System for drilling deivated boreholes |
Randal H. Pustanyk, Nicholas Peter Wallis |
1995-04-25 |
| 5293945 |
Downhole adjustable stabilizer |
Irwin Rosenhauch |
1994-03-15 |
| 5163521 |
System for drilling deviated boreholes |
Randal H. Pustanyk |
1992-11-17 |