Issued Patents All Time
Showing 51–75 of 75 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6880631 | Whipstock casing milling system | Bruce McGarian | 2005-04-19 |
| 6840320 | Method and apparatus for forming an optimized window | Brian Cruickshank | 2005-01-11 |
| 6752211 | Method and apparatus for multilateral junction | Glenn L. Allison, Praful C. Desai, Bruce McGarian | 2004-06-22 |
| 6732817 | Expandable underreamer/stabilizer | Wei Xu | 2004-05-11 |
| 6648068 | One-trip milling system | James E. Saylor, III, Bruce D. Swearingen, Andrew MacDonald Robin, Alexander William Dawson, Gregory S. Nairn | 2003-11-18 |
| 6648069 | Well reference apparatus and method | John E. Campbell, Wei Xu | 2003-11-18 |
| 6612383 | Method and apparatus for milling well casing and drilling formation | Praful C. Desai | 2003-09-02 |
| 6568480 | Orientation and locator system and method of use | — | 2003-05-27 |
| D474510 | Portable electronic gaming device | Richard Fayram, Christian J. Wright | 2003-05-13 |
| 6554062 | Anchor apparatus and method | Mark J. Murray, Wei Xu | 2003-04-29 |
| 6543536 | Well reference apparatus and method | John E. Campbell, Wei Xu | 2003-04-08 |
| 6499537 | Well reference apparatus and method | John E. Campbell, Wei Xu | 2002-12-31 |
| 6499538 | Method and apparatus for forming an optimized window | John E. Campbell | 2002-12-31 |
| 6378632 | Remotely operable hydraulic underreamer | James E. Saylor, III | 2002-04-30 |
| 6354375 | Lateral well tie-back method and apparatus | — | 2002-03-12 |
| 6289999 | Fluid flow control devices and methods for selective actuation of valves and hydraulic drilling tools | Wei Xu | 2001-09-18 |
| 6032748 | Non-rotatable stabilizer and torque reducer | Harold J. DeBray, George C. McKown | 2000-03-07 |
| 5894889 | One trip milling system | James E. Saylor, III, Bruce D. Swearingen, Andrew MacDonald Robin, Alexander William Dawson, Gregory S. Nairn | 1999-04-20 |
| 5771972 | One trip milling system | James E. Saylor, III, Bruce D. Swearingen, Andrew MacDonald Robin, Alexander William Dawson, Gregory S. Nairn | 1998-06-30 |
| 5332048 | Method and apparatus for automatic closed loop drilling system | Lance D. Underwood, Harold D. Johnson | 1994-07-26 |
| 5318138 | Adjustable stabilizer | Lance D. Underwood, Harold D. Johnson | 1994-06-07 |
| 5318137 | Method and apparatus for adjusting the position of stabilizer blades | Harold D. Johnson, Lance D. Underwood | 1994-06-07 |
| 5171139 | Moineau motor with conduits through the stator | Lance D. Underwood, Harold D. Johnson, Mark J. Hommel | 1992-12-15 |
| 4693328 | Expandable well drilling tool | John H. Furse, Praful C. Desai | 1987-09-15 |
| 4660657 | Underreamer | John H. Furse, Praful C. Desai | 1987-04-28 |