| 8978784 |
Directional well drilling |
— |
2015-03-17 |
| 8878688 |
Well downhole condition signalling |
— |
2014-11-04 |
| 8874407 |
System for determination of downhole position |
Richard Stevens, Benjamin Brooking |
2014-10-28 |
| 6763900 |
Directional well drilling |
— |
2004-07-20 |
| 6762601 |
Non-invasive detectors for wells |
Simon Benedict Duckett |
2004-07-13 |
| 6698534 |
Direction control in well drilling |
— |
2004-03-02 |
| 6523609 |
Borehole pressure gauge |
— |
2003-02-25 |
| 6354379 |
Oil well separation method and apparatus |
James Barrett, Richard Stevens |
2002-03-12 |
| 5413045 |
Detonation system |
— |
1995-05-09 |
| 5293940 |
Automatic tubing release |
Joe C. Hromas, Klaus Huber |
1994-03-15 |
| 5216197 |
Explosive diode transfer system for a modular perforating apparatus |
Klaus Huber |
1993-06-01 |
| 5191933 |
Wellbore apparatus including a rathole pressure balanced-differential pressure firing system |
A. Glen Edwards, Klaus Huber, Joe C. Hromas, William McGinley Hill |
1993-03-09 |
| 5191936 |
Method and apparatus for controlling a well tool suspended by a cable in a wellbore by selective axial movements of the cable |
A. Glen Edwards, Klaus Huber |
1993-03-09 |
| 5158142 |
Apparatus for releasing a pipe string from an object stuck downhole by continuously applying tension to said apparatus |
Klaus Huber, Joe C. Hromas |
1992-10-27 |
| 5131470 |
Shock energy absorber including collapsible energy absorbing element and break up of tensile connection |
Klaus Huber |
1992-07-21 |
| 5058680 |
Method of detonating a perforating apparatus on a tubing including lowering one end of a pump and a firing head into said tubing |
Klaus Huber, A. Glen Edwards, William McGinley Hill |
1991-10-22 |
| 5050672 |
Pump apparatus including a firing head for use with a perforating gun on a tubing string |
Klaus Huber, A. Glen Edwards, William McGinley Hill |
1991-09-24 |
| 5040597 |
Well apparatus including a pump and a firing head adapted to be inserted into a tubing which includes a perforating gun |
Klaus Huber, A. Glen Edwards, William McGinley Hill |
1991-08-20 |
| 5033553 |
Intra-perforating gun swivel |
Klaus Huber |
1991-07-23 |
