Issued Patents All Time
Showing 1–25 of 27 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8132630 | Reverse circulation pressure control method and system | Sven Krueger, Volker Krueger, Jens-Uwe Bruns, Roger Fincher, Larry Watkins +1 more | 2012-03-13 |
| 7721822 | Control systems and methods for real-time downhole pressure management (ECD control) | Sven Krueger, Volker Krueger, Harald Grimmer, Roger Fincher, Larry Watkins +1 more | 2010-05-25 |
| 7353887 | Control systems and methods for active controlled bottomhole pressure systems | Sven Krueger, Volker Krueger, Harald Grimmer, Larry Watkins, Peter Aronstam +1 more | 2008-04-08 |
| 7270185 | Drilling system and method for controlling equivalent circulating density during drilling of wellbores | Larry Watkins, Peter Aronstam | 2007-09-18 |
| 7185705 | System and method for recovering return fluid from subsea wellbores | — | 2007-03-06 |
| 7174975 | Control systems and methods for active controlled bottomhole pressure systems | Sven Krueger, Volker Krueger, Harald Grimmer, Roger Fincher, Larry Watkins +1 more | 2007-02-13 |
| 7114581 | Active controlled bottomhole pressure system & method | Peter Aronstam, Volker Krueger, Sven Krueger, Harald Grimmer, Roger Fincher +1 more | 2006-10-03 |
| 7096975 | Modular design for downhole ECD-management devices and related methods | Peter Aronstam, Volker Krueger, Sven Krueger, Harald Grimmer, Roger Fincher +1 more | 2006-08-29 |
| 7055627 | Wellbore fluid circulation system and method | Roger Fincher, Larry Watkins, Peter Aronstam | 2006-06-06 |
| 6854532 | Subsea wellbore drilling system for reducing bottom hole pressure | Roger Fincher, Roland May, Larry Watkins, James W. Macfarlane | 2005-02-15 |
| 6648081 | Subsea wellbore drilling system for reducing bottom hole pressure | Roger Fincher, Roland May, Larry Watkins, James W. Macfarlane | 2003-11-18 |
| 6527054 | Apparatus and method for the disposition of drilling solids during drilling of subsea oilfield wellbores | Roger Fincher | 2003-03-04 |
| 6446737 | Apparatus and method for rotating a portion of a drill string | Marcus Oesterberg | 2002-09-10 |
| 6415877 | Subsea wellbore drilling system for reducing bottom hole pressure | Roger Fincher, Roland May, Larry Watkins, James W. Macfarlane | 2002-07-09 |
| 6408948 | Tubing handling for subsea oilfield tubing operations | James W. Macfarlane, Roger Fincher | 2002-06-25 |
| 6276454 | Tubing injection systems for oilfield operations | Philip Burge | 2001-08-21 |
| 6179057 | Apparatus and method for killing or suppressing a subsea well | James W. Macfarlane, Roger Fincher | 2001-01-30 |
| 6116345 | Tubing injection systems for oilfield operations | Philip Burge | 2000-09-12 |
| 6032744 | Universal pipe and tubing injection apparatus and method | Philip Burge, Glenn Leroux, Friedhelm Makohl | 2000-03-07 |
| 5954137 | Apparatus and method for avoiding formation impairment during completion of wellbores | Martin P. Coronado, Allan MacKenzie | 1999-09-21 |
| 5890534 | Variable injector | Philip Burge, Friedhelm Makohl | 1999-04-06 |
| 5875850 | Universal pipe and tubing injection apparatus and method | Philip Burge, Glenn Leroux, Friedhelm Makohl | 1999-03-02 |
| 5850874 | Drilling system with electrically controlled tubing injection system | Philip Burge, Glenn Leroux, Friedhelm Makhol | 1998-12-22 |
| 5845708 | Coiled tubing apparatus | Philip Burge, Friedhelm Makohl | 1998-12-08 |
| 5823267 | Universal pipe and tubing injection apparatus and method | Philip Burge, Glenn Leroux, Friedhelm Makohl | 1998-10-20 |