Issued Patents All Time
Showing 51–75 of 90 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8453748 | Subterranean well valve activated with differential pressure | James Dan Vick, Jr. | 2013-06-04 |
| 8453749 | Control system for an annulus balanced subsurface safety valve | James Dan Vick, Jr. | 2013-06-04 |
| 8342247 | Safety valve having mono spring closure mechanism | James Dan Vick, Jr., Leo G. Collins, Glenn R. Davis | 2013-01-01 |
| 8276675 | System and method for servicing a wellbore | Perry C. Shy, Roger Watson | 2012-10-02 |
| 8235103 | Well tools incorporating valves operable by low electrical power input | Adam D. Wright, Michael Linley Fripp, Kevin D. Fink, Donald H. Perkins, Mark D. Kalman | 2012-08-07 |
| 8096363 | Circulation control valve and associated method | — | 2012-01-17 |
| 8038120 | Magnetically coupled safety valve with satellite outer magnets | James Dan Vick, Jr. | 2011-10-18 |
| 7926573 | Circulation control valve and associated method | Tom Swan | 2011-04-19 |
| 7866402 | Circulation control valve and associated method | — | 2011-01-11 |
| 7644767 | Safety valve with flapper/flow tube friction reducer | Frank D. Kalb, James Dan Vick, Jr. | 2010-01-12 |
| 7640989 | Electrically operated well tools | James Dan Vick, Jr. | 2010-01-05 |
| 7597149 | Safety valve with extension springs | James Dan Vick, Jr., Abram Serda Galindo | 2009-10-06 |
| 7597151 | Hydraulically operated formation isolation valve for underbalanced drilling applications | Fredrick D. Curtis, Ronald E. Hyden, Michael Harvey, James Dan Vick, Jr. | 2009-10-06 |
| 7510010 | System and method for cementing through a safety valve | — | 2009-03-31 |
| 7370709 | Subterranean magnetic field protective shield | — | 2008-05-13 |
| 6715558 | Infinitely variable control valve apparatus and method | — | 2004-04-06 |
| 6668936 | Hydraulic control system for downhole tools | Virgilio Garcia-Soule, Perry C. Shy, Leo G. Collins | 2003-12-30 |
| 6591914 | Hydraulic control system for downhole tools | — | 2003-07-15 |
| 6585051 | Hydraulically operated fluid metering apparatus for use in a subterranean well, and associated methods | Daniel George Purkis, Michael A. Reid | 2003-07-01 |
| 6536530 | Hydraulic control system for downhole tools | Roger L. Schultz, Paul D. Ringgenberg | 2003-03-25 |
| 6422317 | Flow control apparatus and method for use of the same | — | 2002-07-23 |
| 6092593 | Apparatus and methods for deploying tools in multilateral wells | James A. Woodcock | 2000-07-25 |
| 6009942 | Wye block having a rotary guide incorporated therein | — | 2000-01-04 |
| 5992525 | Apparatus and methods for deploying tools in multilateral wells | James A. Woodcock | 1999-11-30 |
| 5954135 | Method and apparatus for establishing fluid communication within a subterranean well | Eddie L. Langston | 1999-09-21 |