Issued Patents All Time
Showing 51–71 of 71 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7642785 | Method and device for complex permittivity measurements as a function of frequency | Nikita Seleznev, Mohammad-Reza Taherian, Austin Boyd | 2010-01-05 |
| 7640110 | Pixel based inversion method for surface electromagnetic measurement | Aria Abubakar, Vladimir Druskin, David Alumbaugh | 2009-12-29 |
| 7565244 | Method and system for removing effects of conductive casings and wellbore and surface heterogeneity in electromagnetic imaging surveys | David Alumbaugh, Ping Zhang, Edward Nichols, Frank Morrison, Aria Abubakar | 2009-07-21 |
| 7430474 | Removing sea surface-related electromagnetic fields in performing an electromagnetic survey | Peter M. van den Berg, Aria Abubakar | 2008-09-30 |
| 7376514 | Method for determining properties of earth formations using dielectric permittivity measurements | Nikita Seleznev, Austin Boyd, Mehdi Hizem | 2008-05-20 |
| 7363160 | Technique for determining properties of earth formations using dielectric permittivity measurements | Nikita Seleznev, Austin Boyd, Mehdi Hizem | 2008-04-22 |
| 7334661 | Acoustic logging tool sleeve | Jahir Pabon, Chung Chang, David Johnson, Vivian Pistre, Smaine Zeroug +4 more | 2008-02-26 |
| 7302346 | Data logging | Chung Chang, Marwan Moufarrej, Sandip Bose | 2007-11-27 |
| 7066282 | Apparatus and methods for measuring formation characteristics in presence of conductive and non-conductive muds | Yong-Hua Chen | 2006-06-27 |
| 6941231 | Acoustic method for estimating mechanical properties of a material and apparatus therefor | Smaine Zeroug, Matteo Loizzo, Mickael Allouche | 2005-09-06 |
| 6675892 | Well testing using multiple pressure measurements | Fikri John Kuchuk, Terizhandur S. Ramakrishnan, Alpaslan Z. Tengirsek, Ashok Belani, Adrian Douglas | 2004-01-13 |
| 6594584 | Method for calculating a distance between a well logging instrument and a formation boundary by inversion processing measurements from the logging instrument | Dzevat Omeragic, Cengiz Esmersoy | 2003-07-15 |
| 6061634 | Method and apparatus for characterizing earth formation properties through joint pressure-resistivity inversion | Ashok Belani, Terizhandur S. Ramakrishnan, Fikri John Kuchuk, Luis C. Ayestaran | 2000-05-09 |
| 5552786 | Method and apparatus for logging underground formations using radar | Jiqing Xia, David Mariani, Richard Gaylor | 1996-09-03 |
| 5530359 | Borehole logging tools and methods using reflected electromagnetic signals | Jiqing Xia | 1996-06-25 |
| 5485743 | Microwave device and method for measuring multiphase flows | M. Reza Taherian | 1996-01-23 |
| 5434507 | Method and apparatus for electromagnetic logging with two dimensional antenna array | Jeffrey A. Beren, Yupai P. Hsu, David Mariani, Kambiz A. Safinya, M. Reza Taherian | 1995-07-18 |
| 5406206 | Method of evaluating a geological formation using a logging tool including slot antenna having two nonparallel elements | Kambiz A. Safinya, Jeffrey A. Beren | 1995-04-11 |
| 5402069 | Spontaneous potential measurement apparatus connected between metallic housings of a wellbore apparatus for measuring the spontaneous potential of an earth formation | Jacques R. Tabanou, M. Reza Taherian | 1995-03-28 |
| 5345179 | Logging earth formations with electromagnetic energy to determine conductivity and permittivity | M. Reza Taherian, Alain Dumont, Jeffrey A. Beren | 1994-09-06 |
| 5243290 | Apparatus and method of logging using slot antenna having two nonparallel elements | Kambiz A. Safinya, Jeffrey A. Beren | 1993-09-07 |