Issued Patents All Time
Showing 1–16 of 16 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7252149 | Safety valve lock out system and method | — | 2007-08-07 |
| 7243724 | Apparatus and method for treating an interval of a wellbore | Ronald W. McGregor, Travis Hailey, William David Henderson, Philip D. Nguyen, David A. Hejl +1 more | 2007-07-17 |
| 6932157 | Apparatus and method for treating an interval of a wellbore | Ronald W. McGregor, Travis Hailey, William David Henderson, Philip D. Nguyen | 2005-08-23 |
| 6814139 | Gravel packing apparatus having an integrated joint connection and method for use of same | David A. Hejl | 2004-11-09 |
| 6565093 | Seal structure for downhole tool | Stephen L. Crow, William David Henderson, Timothy Edward Harms, Ralph Jones | 2003-05-20 |
| 6302210 | Safety valve utilizing an isolation valve and method of using the same | Michael B. Vinzant, Michael Wade Meaders, Gerald L. LeBoeuf | 2001-10-16 |
| 5823265 | Well completion system with well control valve | John C. Gano, Nam Van Le, James R. Longbottom, Karluf Hagen | 1998-10-20 |
| 5564502 | Well completion system with flapper control valve | John C. Gano, Nam V. Le, James R. Longbottom, Karluf Hagen | 1996-10-15 |
| 5505263 | Packer set safety valve for controlling dual fluid flows | Pat M. White | 1996-04-09 |
| 5479989 | Sleeve valve flow control device with locator shifter | Perry C. Shy | 1996-01-02 |
| 5305828 | Combination packer/safety valve assembly for gas storage wells | Pat M. White | 1994-04-26 |
| 4921048 | Well production optimizing system | Ricky M. Holloman, James B. Pruden | 1990-05-01 |
| 4524833 | Apparatus and methods for orienting devices in side pocket mandrels | Robert L. Hilts | 1985-06-25 |
| 4469179 | Safety system | Michael B. Vinzant, Kenneth L. Schwendemann | 1984-09-04 |
| 4448216 | Subsurface safety valve | Steven C. Speegle, Kenneth L. Schwendemann, Michael B. Vinzant, Cary Gorten Mondon | 1984-05-15 |
| 4376464 | Well safety valve | — | 1983-03-15 |