Issued Patents All Time
Showing 25 most recent of 26 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7804296 | Methods and apparatus for monitoring a property of a formation fluid | Robert L. Kleinberg, Christian Straley, Robert Badry, Austin Boyd, Olivier Faivre +2 more | 2010-09-28 |
| 7765862 | Determination of formation pressure during a drilling operation | — | 2010-08-03 |
| 7642507 | Apparatus and methods for interlaced density and neutron measurements | Richard J. Radtke, Michael Evans | 2010-01-05 |
| 7511487 | Logging method for determining characteristic of fluid in a downhole measurement region | Robert Badry, Robert L. Kleinberg | 2009-03-31 |
| 7408150 | Well logging method for determining formation characteristics using pulsed neutron capture measurements | Charles F. Morris | 2008-08-05 |
| 7361886 | Corrections of gamma-ray responses | Christian Stoller, Michael Evans | 2008-04-22 |
| 6891369 | Nuclear magnetic resonance method and logging apparatus for fluid analysis | Martin Hurlimann, Mark Flaum, Lalitha Venkataramanan, Robert L. Kleinberg | 2005-05-10 |
| 6850060 | Method and apparatus for rapid characterization of diffusion | Yi-Qiao Song, Martin Hurlimann | 2005-02-01 |
| 6600315 | Method for improving resolution of nuclear magnetic resonance measurements by combining low resolution high accuracy measurements with high resolution low accuracy measurements | Nicholas J. Heaton, Chanh Cao Minh | 2003-07-29 |
| 6570382 | Nuclear magnetic resonance method and logging apparatus | Martin Hurlimann, Mark Flaum, Lalitha Venkataramanan | 2003-05-27 |
| 6268603 | Method and apparatus for interpreting fluorescence logging data | Oliver C. Mullins, Xu Wu | 2001-07-31 |
| 6232778 | Method for obtaining NMR bound fluid volume using partial polarization | Peter Speier, Steven F. Crary, Robert L. Kleinberg | 2001-05-15 |
| 6147489 | Method and apparatus for measuring total nuclear magnetic resonance porosity | Robert Freedman, Christopher E. Morriss, Austin Boyd | 2000-11-14 |
| 6140817 | Magnetic resonance well logging method and apparatus | Robert L. Kleinberg | 2000-10-31 |
| 6097184 | Nuclear magnetic resonance well logging to determine gas-filled porosity and oil-filled porosity of earth formations without a constant static magnetic field gradient | — | 2000-08-01 |
| 6088656 | Method for interpreting carbonate reservoirs | Terizhandur S. Ramakrishnan, Raghu Ramamoorthy, Naoki Saito | 2000-07-11 |
| 6023163 | Well logging method and apparatus for determining gas and diffusion coefficient using NMR | Abdurrahman Sezginer | 2000-02-08 |
| 5789669 | Method and apparatus for determining formation pressure | — | 1998-08-04 |
| 5019708 | Method for eliminating the effect of rugosity from compensated formation logs by geometrical response matching | — | 1991-05-28 |
| 4909075 | Method for determining formation characteristics with enhanced statistical precision without degrading the vertical resolution or with enhanced vertical resolution | James E. Galford, Steven Duckett | 1990-03-20 |
| 4816674 | Determining a formation porosity from neutron logging information | Darwin V. Ellis, Hubert D. Scott | 1989-03-28 |
| 4794792 | Method for determining formation characteristics with enhanced vertical resolution | James E. Galford, Steven W. Ducket | 1989-01-03 |
| 4786796 | Method for determining formation characteristics with enhanced vertical resolution | James E. Galford, Steven V. Ducket | 1988-11-22 |
| 4464569 | Method and apparatus for spectroscopic analysis of a geological formation | — | 1984-08-07 |
| 4423323 | Neutron logging method and apparatus for determining a formation characteristic free of environmental effects | Darwin V. Ellis | 1983-12-27 |