Issued Patents All Time
Showing 1–16 of 16 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9910182 | Method and apparatus for inversion in dielectric logging | Babak Kouchmeshky, Rashid W. Khokhar, Hans-Martin Maurer | 2018-03-06 |
| 8756015 | Processing of azimuthal resistivity data in a resistivity gradient | — | 2014-06-17 |
| 7915895 | Method of calibrating an azimuthal inductive cross-coil or tilted coil instrument | Roland E. Chemali, Gulamabbas Merchant, Tsili Wang | 2011-03-29 |
| 7659723 | Broadband resistivity interpretation | David C. Herrick, Gregory B. Itskovich | 2010-02-09 |
| 7579840 | Broadband resistivity interpretation | David C. Herrick | 2009-08-25 |
| 7375530 | Method for signal enhancement in azimuthal propagation resistivity while drilling | Roland E. Chemali, Paul Cairns, Tsili Wang, Andrew Brooks, Otto N. Fanini +1 more | 2008-05-20 |
| 6400148 | Use of redundant data for log quality measurements | Songhua Chen | 2002-06-04 |
| 6272434 | Drilling system with downhole apparatus for determining parameters of interest and for adjusting drilling direction in response thereto | Macmillan H. Wisler, Daniel C. Minette, Ronald J. Deady, James V. Leggett, III, Herbert W. Beimgraben +1 more | 2001-08-07 |
| 6060884 | Method and apparatus for measuring electromagnetic properties of materials in borehole environs and simultaneously determining the quality of the measurements | Larry W. Thompson, Macmillan M. Wisler, Jian Wu | 2000-05-09 |
| 5892361 | Use of raw amplitude and phase in propagation resistivity measurements to measure borehole environmental parameters | Larry W. Thompson, Macmillan M. Wisler, Jian Wu | 1999-04-06 |
| 5869968 | Method and apparatus for avoiding mutual coupling between receivers in measurement while drilling | Andrew Brooks, MacMillian M. Wisler, Larry W. Thompson, Jian-Qun Wu, John W. Harrell | 1999-02-09 |
| 5812068 | Drilling system with downhole apparatus for determining parameters of interest and for adjusting drilling direction in response thereto | Macmillan M. Wisler, Daniel C. Minette, Ronald J. Deady, James V. Leggett, III, Herbert W. Beimgraben +1 more | 1998-09-22 |
| 5811973 | Determination of dielectric properties with propagation resistivity tools using both real and imaginary components of measurements | — | 1998-09-22 |
| 5581024 | Downhole depth correlation and computation apparatus and methods for combining multiple borehole measurements | Ronald J. Deady, Macmillan M. Wisler | 1996-12-03 |
| 5469062 | Multiple depths and frequencies for simultaneous inversion of electromagnetic borehole measurements | — | 1995-11-21 |
| 4958286 | Time-variant filter coefficients | — | 1990-09-18 |