| 9175540 |
Control system for a subsea well |
William D. Munro |
2015-11-03 |
| 8746346 |
Subsea tree workover control system |
— |
2014-06-10 |
| 8474537 |
High capacity wellhead connector having a single annular piston |
Perry J. Stokes, David W. Hughes, Joseph W. Pallini, Robert N. Rogers, William T. Higgins |
2013-07-02 |
| 8322442 |
Well unloading package |
— |
2012-12-04 |
| 8281863 |
Detachable electrical actuator |
— |
2012-10-09 |
| 8179279 |
Method and device for producing hydrocarbons using wireless communication |
— |
2012-05-15 |
| 8157015 |
Large bore vertical tree |
David S. Christie, Peter Breese |
2012-04-17 |
| 8011436 |
Through riser installation of tree block |
David S. Christie, Peter Breese |
2011-09-06 |
| 7647973 |
Collapse arrestor tool |
Marc Minassian, Kevin G. Buckle, Steven P. Fenton |
2010-01-19 |
| 6902005 |
Tubing annulus communication for vertical flow subsea well |
Amin Radi, Michael E. Capesius, Fife B. Ellis |
2005-06-07 |
| 6763891 |
Production tree with multiple safety barriers |
Bernard Humphrey, Jeffrey Paul Goetz, Kevin L. Ingram, Norman Brammer |
2004-07-20 |
| 6186237 |
Annulus check valve with tubing plug back-up |
Charles D. Bridges |
2001-02-13 |
| 5366017 |
Intermediate casing annulus monitor |
— |
1994-11-22 |