| 10480304 |
Analysis of drillstring dynamics using an angular rate sensor |
Charles Lee Mauldin, Richard Berns |
2019-11-19 |
| 10100630 |
Method and apparatus for communicating incremental depth and/or other useful data of a downhole tool |
Charles Lee Mauldin |
2018-10-16 |
| 9366131 |
Analyzing toolface velocity to detect detrimental vibration during drilling |
Charles Lee Mauldin, Richard Berns |
2016-06-14 |
| 8881844 |
Directional drilling control using periodic perturbation of the drill bit |
Steven Reid Farley, Michael L. Larronde, Charles Lee Mauldin, Robert Anthony Aiello |
2014-11-11 |
| 7353613 |
Directional sensor system comprising a single axis sensor element positioned at multiple controlled orientations |
Jian-Qun Wu |
2008-04-08 |
| 6831571 |
Logging device data dump probe |
— |
2004-12-14 |
| 6825659 |
Method and apparatus for nuclear magnetic resonance measuring while drilling |
Manfred G. Prammer, James H. Dudley, Peter Masak, George David Goodman, Marian Morys +5 more |
2004-11-30 |
| 6583621 |
Method and apparatus for nuclear magnetic resonance measuring while drilling |
Manfred G. Prammer, James H. Dudley, Peter Masak, George David Goodman, Marian Morys +5 more |
2003-06-24 |
| 6362619 |
Method and apparatus for nuclear magnetic resonance measuring while drilling |
Manfred G. Prammer, James H. Dudley, Peter Masak, George David Goodman, Marian Morys +5 more |
2002-03-26 |
| 6268726 |
Method and apparatus for nuclear magnetic resonance measuring while drilling |
Manfred G. Prammer, James H. Dudley, Peter Masak, George David Goodman, Marian Morys +5 more |
2001-07-31 |
| 6218842 |
Multi-frequency electromagnetic wave resistivity tool with improved calibration measurement |
Michael S. Bittar |
2001-04-17 |
| 6191561 |
Variable output rotary power generator |
— |
2001-02-20 |
| 5278507 |
Well logging method and apparatus providing multiple depth of investigation using multiple transmitters and single receiver pair having depth of investigation independent of formation resistivity |
M. Vikram Rao, Paul F. Rodney |
1994-01-11 |
| 5174765 |
Electrical connector having electrically conductive elastomer covered by insulating elastomer |
Joseph M. Williams |
1992-12-29 |
| 4940943 |
Method and apparatus for optimizing the reception pattern of the antenna of a propagating electromagnetic wave logging tool |
Paul F. Rodney |
1990-07-10 |