Issued Patents All Time
Showing 1–25 of 27 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6547006 | Wellbore liner system | Marc Kuck, Thomas F. Bailey, Monte Ira Johnson, Robert E. Robertson, Andrew Arthur Barry +6 more | 2003-04-15 |
| 6334487 | Valve assembly | Courtney W. Adkins, Thurman B. Caarter, John D. Roberts, Richard M. Ward | 2002-01-01 |
| 6209636 | Wellbore primary barrier and related systems | John D. Roberts, Jan Drechsler, Tom Salversen, Tom Unsgaard, Eirik Enerstvedt +2 more | 2001-04-03 |
| 6202752 | Wellbore milling methods | Marc Kuck, Thomas F. Bailey, Monte Ira Johnson, Robert E. Robertson, Andrew Arthur Barry +6 more | 2001-03-20 |
| 6155349 | Flexible wellbore mill | Robert E. Robertson, Thurman B. Carter, Timothy L. Wilson, Guy L. McClung, III | 2000-12-05 |
| 6116344 | Apparatus for completing a subterranean well and associated methods of using same | James R. Longbottom, Gene Halford, Douglas Glenn Durst | 2000-09-12 |
| 6116336 | Wellbore mill system | Courtney W. Adkins, Thurman B. Caarter, John D. Roberts, Richard M. Ward | 2000-09-12 |
| 6092601 | Apparatus for completing a subterranean well and associated methods of using same | John C. Gano, Douglas Glenn Durst, Thurman James Carter, Dale Langford | 2000-07-25 |
| 6076602 | Apparatus for completing a subterranean well and associated methods of using same | John C. Gano, Douglas Glenn Durst, James R. Longbottom, Gene Halford | 2000-06-20 |
| 6070665 | Wellbore milling | Teme Forrest Singleton, Andrew Mark Berry, John D. Roberts, William Alan Spielman, David M. Haugen +3 more | 2000-06-06 |
| 6059037 | Apparatus for completing a subterranean well and associated methods of using same | James R. Longbottom, Tom P. Wilson, Charles W. Pleasants, Gene Halford, Douglas Glenn Durst | 2000-05-09 |
| 6056056 | Whipstock mill | Douglas Glenn Durst, Robert E. Robertson, Thurman B. Carter, Paul J. Johantges, Charles W. Pleasants +2 more | 2000-05-02 |
| 6024168 | Wellborne mills & methods | Mark Kuck, Thurman B. Carter, Guy L. McClung, III | 2000-02-15 |
| 5887655 | Wellbore milling and drilling | David M. Haugen, Mark W. Schnitker, Steve R. Delgado, Thurman B. Carter, John D. Roberts +4 more | 1999-03-30 |
| 5826651 | Wellbore single trip milling | Mark H. Lee, Thurman B. Carter, Richard M. Ward | 1998-10-27 |
| 5803176 | Sidetracking operations | Dale Langford | 1998-09-08 |
| 5743331 | Wellbore milling system | Courtney W. Adkins, Thurman B. Carter, Richard M. Ward | 1998-04-28 |
| 5727629 | Wellbore milling guide and method | Dale Langford | 1998-03-17 |
| 5464062 | Metal-to-metal sealable port | — | 1995-11-07 |
| 5368098 | Stage tool | Frederick T. Tilton | 1994-11-29 |
| 5029646 | Orifice well safety valve with release mechanism | — | 1991-07-09 |
| 4860991 | Safety valve | Ronald E. Pringle | 1989-08-29 |
| 4838355 | Dual hydraulic safety valve | Dwayne Leismer | 1989-06-13 |
| 4660646 | Failsafe gas closed safety valve | — | 1987-04-28 |
| 4588029 | Expandable metal seal for a well tool | — | 1986-05-13 |