Issued Patents All Time
Showing 26–50 of 51 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7730970 | Drilling efficiency through beneficial management of rock stress levels via controlled oscillations of subterranean cutting levels | Larry Watkins, Peter Aronstam, Allen Sinor, John L. Baugh | 2010-06-08 |
| 7721822 | Control systems and methods for real-time downhole pressure management (ECD control) | Sven Krueger, Volker Krueger, Harald Grimmer, Larry Watkins, Peter Aronstam +1 more | 2010-05-25 |
| 7597148 | Formation and control of gas hydrates | Edward J. O'Malley, Bennett M. Richard, Paul McElfresh, Aftab Khokhar, Daniel Lee Crosby +2 more | 2009-10-06 |
| 7487828 | Apparatus and method for powering electrical devices along a pipeline | Larry Watkins, Peter Aronstam | 2009-02-10 |
| 7400262 | Apparatus and methods for self-powered communication and sensor network | Roland E. Chemali, Volker Krueger, Peter Aronstam, Larry Watkins | 2008-07-15 |
| 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 |
| 7341116 | Drilling efficiency through beneficial management of rock stress levels via controlled oscillations of subterranean cutting elements | Larry Watkins, Peter Aronstam, Allen Sinor, John L. Baugh | 2008-03-11 |
| 7313052 | System and methods of communicating over noisy communication channels | Larry Watkins, Peter Aronstam | 2007-12-25 |
| 7287604 | Steerable bit assembly and methods | Peter Aronstam, Larry Watkins | 2007-10-30 |
| 7219722 | Apparatus and methods for powering downhole electrical devices | Larry Watkins, Peter Aronstam | 2007-05-22 |
| 7174975 | Control systems and methods for active controlled bottomhole pressure systems | Sven Krueger, Volker Krueger, Harald Grimmer, Larry Watkins, Peter Aronstam +1 more | 2007-02-13 |
| 7114581 | Active controlled bottomhole pressure system & method | Peter Aronstam, Volker Krueger, Sven Krueger, Harald Grimmer, Larry Watkins +1 more | 2006-10-03 |
| 7096975 | Modular design for downhole ECD-management devices and related methods | Peter Aronstam, Volker Krueger, Sven Krueger, Harald Grimmer, Larry Watkins +1 more | 2006-08-29 |
| 7055627 | Wellbore fluid circulation system and method | Peter Fontana, Larry Watkins, Peter Aronstam | 2006-06-06 |
| 7000715 | Rotary drill bits exhibiting cutting element placement for optimizing bit torque and cutter life | Lawrence Allen Sinor, Christopher C. Beuershausen, Mark W. Dykstra, Roland Illerhaus, Rudolf Carl Pessier | 2006-02-21 |
| 6854532 | Subsea wellbore drilling system for reducing bottom hole pressure | Roland May, Peter Fontana, Larry Watkins, James W. Macfarlane | 2005-02-15 |
| 6648081 | Subsea wellbore drilling system for reducing bottom hole pressure | Roland May, Peter Fontana, Larry Watkins, James W. Macfarlane | 2003-11-18 |
| 6527054 | Apparatus and method for the disposition of drilling solids during drilling of subsea oilfield wellbores | Peter Fontana | 2003-03-04 |
| 6443249 | Rotary drill bits for directional drilling exhibiting variable weight-on-bit dependent cutting characteristics | Christopher C. Beuershausen, Mark W. Dykstra, Roland Illerhaus, Steve R. Matson, James A. Norris +2 more | 2002-09-03 |
| 6415877 | Subsea wellbore drilling system for reducing bottom hole pressure | Roland May, Peter Fontana, Larry Watkins, James W. Macfarlane | 2002-07-09 |
| 6408948 | Tubing handling for subsea oilfield tubing operations | Peter Fontana, James W. Macfarlane | 2002-06-25 |
| 6230828 | Rotary drilling bits for directional drilling exhibiting variable weight-on-bit dependent cutting characteristics | Christopher C. Beuershausen, Mark W. Dykstra, Roland Illerhaus, Steve R. Matson, James A. Norris +2 more | 2001-05-15 |
| 6206108 | Drilling system with integrated bottom hole assembly | Robert MacDonald, Volker Krueger, Hatem Nasr, John W. Harrell | 2001-03-27 |
| 6196336 | Method and apparatus for drilling boreholes in earth formations (drilling liner systems) | Larry Watkins, Friedhelm Makohl, Detlef Hahn | 2001-03-06 |
| 6179057 | Apparatus and method for killing or suppressing a subsea well | Peter Fontana, James W. Macfarlane | 2001-01-30 |