Issued Patents All Time
Showing 26–40 of 40 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6163151 | Apparatus and method for making nuclear magnetic measurements in a borehole | David M. Schneider | 2000-12-19 |
| 6081116 | Nuclear magnetic resonance apparatus and method for geological applications | Jian-Qun Wu | 2000-06-27 |
| 6060884 | Method and apparatus for measuring electromagnetic properties of materials in borehole environs and simultaneously determining the quality of the measurements | Wallace H. Meyer, Larry W. Thompson, Jian Wu | 2000-05-09 |
| 5892361 | Use of raw amplitude and phase in propagation resistivity measurements to measure borehole environmental parameters | Wallace H. Meyer, Larry W. Thompson, Jian Wu | 1999-04-06 |
| 5811972 | Method and apparatus for determining influence of mutual magnetic coupling in electromagnetic propagation tools | Larry W. Thompson | 1998-09-22 |
| 5812068 | Drilling system with downhole apparatus for determining parameters of interest and for adjusting drilling direction in response thereto | Wallace H. Meyer, Daniel C. Minette, Ronald J. Deady, James V. Leggett, III, Herbert W. Beimgraben +1 more | 1998-09-22 |
| 5682099 | Method and apparatus for signal bandpass sampling in measurement-while-drilling applications | Larry W. Thompson, David M. Schneider | 1997-10-28 |
| 5581024 | Downhole depth correlation and computation apparatus and methods for combining multiple borehole measurements | Wallace H. Meyer, Ronald J. Deady | 1996-12-03 |
| RE35386 | Method for drilling directional wells | Jian-Qun Wu | 1996-12-03 |
| 5574374 | Method and apparatus for interrogating a borehole and surrounding formation utilizing digitally controlled oscillators | Larry W. Thompson | 1996-11-12 |
| 5530358 | Method and apparatus for measurement-while-drilling utilizing improved antennas | Larry W. Thompson, William C. Paluch | 1996-06-25 |
| 5230386 | Method for drilling directional wells | Jian Wu | 1993-07-27 |
| 5144245 | Method for evaluating a borehole formation based on a formation resistivity log generated by a wave propagation formation evaluation tool | — | 1992-09-01 |
| 4625173 | System for monitoring formation spontaneous potential and polarization constant while drilling | James R. Birchak, Richard A. Meador | 1986-11-25 |
| 4536713 | Electrical resistivity measurement of a flowing drilling fluid using eddy currents generated therein | Mark H. Davis, Richard A. Meador | 1985-08-20 |