Issued Patents All Time
Showing 51–72 of 72 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7805247 | System and methods for well data compression | Julian Pop | 2010-09-28 |
| 7711488 | Methods and apparatus to monitor contamination levels in a formation fluid | Peter S. Hegeman, Chengli Dong, Ricardo Vasques | 2010-05-04 |
| 7680600 | Method, system and apparatus for formation tester data processing | Andrew Carnegie, Julian Pop | 2010-03-16 |
| 7574898 | Vibrating wire viscosity sensor | Christopher Harrison, Isabelle Etchart, Jacques Jundt, Anthony Robert Holmes Goodwin, Sophie Nazik Godefroy +2 more | 2009-08-18 |
| 7526953 | Methods and apparatus for the downhole characterization of formation fluids | Anthony Robert Holmes Goodwin, Pete Hegeman, Chengli Dong | 2009-05-05 |
| 7342222 | Method and apparatus for downhole spectroscopy processing | Roger Griffiths, Jack Horkowitz | 2008-03-11 |
| 7305306 | System and methods of deriving fluid properties of downhole fluids and uncertainty thereof | Lalitha Venkataramanan, Go Fujisawa, Bhavani Raghuraman, Oliver C. Mullins, Andrew Carnegie +4 more | 2007-12-04 |
| 7222671 | Apparatus and method for formation evaluation | Derek Caudwell, Anthony Robert Holmes Goodwin, Martin Trusler, Michael W. Frels, Jonathan W. Brown +3 more | 2007-05-29 |
| 7194902 | Apparatus and method for formation evaluation | Anthony Robert Holmes Goodwin, Michael W. Frels | 2007-03-27 |
| 7013217 | System and method for determining formation slowness | Dominique Dion | 2006-03-14 |
| 6992768 | Optical fluid analysis signal refinement | Chengli Dong, Peter S. Hegeman, Oliver C. Mullins, Andrew Kurkjian, Andrew Carnegie | 2006-01-31 |
| 6459993 | Processing sonic waveform measurements from array borehole logging tools | Henri-Pierre Valero, Alain Brie | 2002-10-01 |
| 6018495 | Method of borehole compensation of earth formation characteristic measurements using depth measurements | — | 2000-01-25 |
| 5796677 | Method of sonic logging while drilling a borehole traversing an earth formation | Sergio Kostek, Shu-Kong Chang, Gordon McDaniel, Thomas J. Plona, Curtis Randall +2 more | 1998-08-18 |
| 5274604 | Method for spatially filtering signals representing formation and channel echoes in a borehole environment | Ralph M. D'Angelo, Fred E. Stanke, Hung-Wen Chang | 1993-12-28 |
| 5047991 | Lithology identification using sonic data | — | 1991-09-10 |
| 5031155 | Compression and reconstruction of sonic data | — | 1991-07-09 |
| 4951266 | Method of filtering sonic well logging data | — | 1990-08-21 |
| 4888740 | Differential energy acoustic measurements of formation characteristic | Alain Brie, Richard A. Plumb | 1989-12-19 |
| 4870627 | Method and apparatus for detecting and evaluating borehole wall fractures | Alain Brie, Richard A. Plumb | 1989-09-26 |
| 4809236 | Method and apparatus for determining the magnitude of components of measurements made from inside a borehole | Ralphe Wiggins | 1989-02-28 |
| 4543648 | Shot to shot processing for measuring a characteristic of earth formations from inside a borehole | — | 1985-09-24 |