| 11104837 |
Drilling fluids and methods for making the same |
— |
2021-08-31 |
| 10421892 |
Drilling fluids and methods for making the same |
— |
2019-09-24 |
| 6118542 |
Method and apparatus for determination of a quality property of a piece of meat |
Jan Rud Andersen, Claus Borggaard, Allan J. Rasmussen |
2000-09-12 |
| 5269383 |
Navigable downhole drilling system |
— |
1993-12-14 |
| 5248896 |
Power generation from a multi-lobed drilling motor |
— |
1993-09-28 |
| 5171138 |
Composite stator construction for downhole drilling motors |
— |
1992-12-15 |
| 4926949 |
Thermal shield for drilling motors |
— |
1990-05-22 |
| 4901806 |
Apparatus for controlled absorption of axial and torsional forces in a well string |
— |
1990-02-20 |
| 4844179 |
Drill string stabilizer |
Rory McCrae Tulloch, William M. Stewart |
1989-07-04 |
| 4807708 |
Directional drilling of a drill string |
Roger John Catherall, William M. Stewart, Randall Pounds |
1989-02-28 |
| 4796704 |
Drop ball sub-assembly for a down-hole device |
William M. Stewart, Rory McCrae Tulloch |
1989-01-10 |
| 4775017 |
Drilling using downhole drilling tools |
Rory McCrae Tulloch, William M. Stewart |
1988-10-04 |