Issued Patents All Time
Showing 26–50 of 62 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5303772 | Well completion apparatus | Kevin R. George, Sherman C. Minni | 1994-04-19 |
| 5301755 | Air chamber actuator for a perforating gun | Kevin R. George | 1994-04-12 |
| 5297629 | Drill stem testing with tubing conveyed perforation | Burchus Q. Barrington | 1994-03-29 |
| 5287924 | Tubing conveyed selective fired perforating systems | John D. Burleson, Justin Mason | 1994-02-22 |
| 5224545 | Eccentrically actuated perforating guns | Henry L. Restarick, David T. Merritt | 1993-07-06 |
| 5170844 | Pressure responsive below-packer valve apparatus | Kevin R. George, Joe Henke | 1992-12-15 |
| 5156213 | Well completion method and apparatus | Kevin R. George, Sherman C. Minni | 1992-10-20 |
| 4917189 | Method and apparatus for perforating a well | David S. Wesson, Kevin R. George | 1990-04-17 |
| 4911251 | Method and apparatus for actuating a tubing conveyed perforating gun | Kevin R. George | 1990-03-27 |
| 4901802 | Method and apparatus for perforating formations in response to tubing pressure | Kevin R. George | 1990-02-20 |
| 4862964 | Method and apparatus for perforating well bores using differential pressure | Kevin R. George | 1989-09-05 |
| 4804044 | Perforating gun firing tool and method of operation | David S. Wesson, Michael E. McMahan | 1989-02-14 |
| 4762179 | Pressure assist detonating bar and method for a tubing conveyed perforator | David S. Wesson, Robert R. Luke, David M. Haugen, Kevin R. George | 1988-08-09 |
| 4760884 | Air chamber actuated dual tubing release assembly | David M. Haugen, Kevin R. George | 1988-08-02 |
| 4749039 | Gun firing system using fluid filled pressure balance tubing | Roy R. Vann, Emmet F. Brieger, Edward A. Colle, Jr., Hilton B. Jones | 1988-06-07 |
| 4726610 | Annulus pressure firer mechanism with releasable fluid conduit force transmission means | David M. Haugen | 1988-02-23 |
| 4716963 | Apparatus for well completion operations | Bennie Gill, David M. Haugen | 1988-01-05 |
| 4690227 | Gun firing head | Marlin R. Smith | 1987-09-01 |
| 4658902 | Surging fluids downhole in an earth borehole | David S. Wesson, A. Glen Edwards, Kevin R. George, Emmert F. Brieger | 1987-04-21 |
| 4655298 | Annulus pressure firer mechanism with releasable fluid conduit force transmission means | David M. Haugen | 1987-04-07 |
| 4650010 | Borehole devices actuated by fluid pressure | Marlin R. Smith | 1987-03-17 |
| 4637478 | Gravity oriented perforating gun for use in slanted boreholes | — | 1987-01-20 |
| 4635733 | Gun firing system using fluid filled pressure balance tubing | Roy R. Vann, Emmet F. Brieger, Edward A. Colle, Jr., Hilton B. Jones | 1987-01-13 |
| 4619333 | Detonation of tandem guns | — | 1986-10-28 |
| 4614156 | Pressure responsive explosion initiator with time delay and method of use | Edward A. Colle, Jr., Donald N. Yates, Jr. | 1986-09-30 |