Issued Patents All Time
Showing 51–70 of 70 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7458421 | Methods and systems for robust and accurate determination of wireline depth in a borehole | Harry Barrow, Ashley Bernard Johnson, Michael Paul Barrett, Charles Jenkins, John Corben | 2008-12-02 |
| 7422060 | Methods and apparatus for completing a well | Ahmed Hammami, Gerald Meeten, Bernadette Craster, Scott Jacobs, Joseph Ayoub +5 more | 2008-09-09 |
| 7413015 | Perforating gun | Russell McKinnon, Daniel C. Markel, James E. Brooks | 2008-08-19 |
| 7387165 | System for completing multiple well intervals | Jorge E. Lopez de Cardenas, Matthew R. Hackworth | 2008-06-17 |
| 7377321 | Testing, treating, or producing a multi-zone well | — | 2008-05-27 |
| 7325616 | System and method for completing multiple well intervals | Jorge E. Lopez de Cardenas, Patrick Mukoro | 2008-02-05 |
| 7322417 | Technique and apparatus for completing multiple zones | Ashish Sharma, Liana Mitrea | 2008-01-29 |
| 7264057 | Subsea intervention | Thomas H. Zimmerman, Peter A. Goode, Ashley C. Kishino, John A. Kerr, Alan Christie | 2007-09-04 |
| 7225873 | Coiled tubing cutter | Tye Schlegelmilch, Vance Nixon | 2007-06-05 |
| 7086467 | Coiled tubing cutter | Tye Schlegelmilch, Vance Nixon | 2006-08-08 |
| 6763889 | Subsea intervention | Thomas H. Zimmerman, Peter A. Goode, Ashley C. Kishino, John A. Kerr, Alan Christie | 2004-07-20 |
| 6719061 | Apparatus and method for inserting and retrieving a tool string through well surface equipment | Laurent E. Muller, Larry Grigar, Steven W. Henderson, Klaus Huber, Bennie Gill +1 more | 2004-04-13 |
| 6321846 | Sealing device for use in subsea wells | — | 2001-11-27 |
| 6293344 | Retainer valve | Vance Nixon, Anthony P. Vovers | 2001-09-25 |
| 6231265 | Self-aligning subsea latch mechanism | John Meijer, Dinesh R. Patel | 2001-05-15 |
| 6085845 | Surface controlled formation isolation valve adapted for deployment of a desired length of a tool string in a wellbore | Dinesh R. Patel | 2000-07-11 |
| 5826660 | Dual action valve including a built in hydraulic circuit | — | 1998-10-27 |
| 5704426 | Zonal isolation method and apparatus | Dale Meek | 1998-01-06 |
| 4961365 | Perforating gun with rotating charges including a mechanical link retaining mechanism | — | 1990-10-09 |
| 4951744 | Angularly shaped unitary structured base strip comprised of a specific material adapted for phasing charges in a perforating gun | — | 1990-08-28 |