| 10502046 |
Sensor standoff |
Ahmed Amine Mahjoub, Sebastien Isambert, Emmanuel Fayeulle, Didier Fouillou, Christian Stoller |
2019-12-10 |
$21,480,000 |
| 10162079 |
Neutron-gamma density through normalized inelastic ratio |
Avtandil Tkabladze, Kenneth E. Stephenson |
2018-12-25 |
|
| 10139518 |
Neutron gamma density correction using elemental spectroscopy |
— |
2018-11-27 |
$40,378,000 |
| 9671519 |
Neutron-gamma density through normalized inelastic ratio |
Avtandil Tkabladze, Kenneth E. Stephenson |
2017-06-06 |
$31,677,000 |
| 9268055 |
Well-logging apparatus including azimuthally spaced radiation detectors |
Avtandil Tkabladze, Christian Stoller |
2016-02-23 |
$109,899,000 |
| 9175559 |
Identification of casing collars while drilling and post drilling using LWD and wireline measurements |
Najmud Dowla, John Rasmus, Abhijeet Nayan, Taesoo Kim, Richard J. Radtke |
2015-11-03 |
$35,746,000 |
| 9052404 |
Well-logging apparatus including azimuthally-spaced, noble gas-based detectors |
Avtandil Tkabladze, Christian Stoller |
2015-06-09 |
$44,885,000 |
| 8969792 |
Apparatus and methods for measuring formation characteristics |
Christian Stoller |
2015-03-03 |
$49,079,000 |
| 8965703 |
Applications based on fluid properties measured downhole |
Ankur Prakash, John Rasmus, Richard J. Radtke, Lee Dolman |
2015-02-24 |
$33,830,000 |
| 8918287 |
Method of determining density of underground formations using neutron-gamma ray measurements |
— |
2014-12-23 |
$71,535,000 |
| 8868346 |
Correction for low porosity effects on neutron gamma density |
Marie-Laure Mauborgne |
2014-10-21 |
$52,653,000 |
| 8664587 |
Non-rotating logging-while-drilling neutron imaging tool |
Peter Wraight, Christian Stoller, Avto Tkabladze |
2014-03-04 |
$70,845,000 |
| 8645068 |
Method and apparatus for determining formation and fluid properties |
John Rasmus, Richard J. Radtke |
2014-02-04 |
$61,074,000 |
| 8637807 |
Apparatus and methods for measuring formation characteristics |
Christian Stoller |
2014-01-28 |
$35,741,000 |
| 8558165 |
Nuclear tool |
Christian Stoller |
2013-10-15 |
$35,594,000 |
| 7642507 |
Apparatus and methods for interlaced density and neutron measurements |
Richard J. Radtke, Charles Flaum |
2010-01-05 |
$51,878,000 |
| 7361886 |
Corrections of gamma-ray responses |
Christian Stoller, Charles Flaum |
2008-04-22 |
$132,364,000 |
| 7334465 |
Integrated logging tool for borehole |
Jan W. Smits, Christian Stoller, Patrick Fisseler, Robert A. Adolph |
2008-02-26 |
$77,620,000 |
| 7112783 |
Neutron measurement method for determining porosity of a formation surrounding a borehole |
Darwin V. Ellis, Benoit Couet, Charles R. Case, Francoise Allioli |
2006-09-26 |
$109,952,000 |
| 7073378 |
Integrated logging tool for borehole |
Jan W. Smits, Christian Stoller, Patrick Fisseler, Robert A. Adolph |
2006-07-11 |
$81,513,000 |
| 6944548 |
Formation evaluation through azimuthal measurements |
Richard J. Radtke, Robert A. Adolph, Loic Vilde, Nihal Wijeyesekera |
2005-09-13 |
$87,830,000 |
| 6903330 |
Multi-point subsurface measurement calibration |
Luca Ortenzi, Richard J. Radtke |
2005-06-07 |
$37,761,000 |
| 6648083 |
Method and apparatus for measuring mud and formation properties downhole |
Richard J. Radtke, W Robert Sloan, Robert A. Adolph |
2003-11-18 |
$31,781,000 |
| 6473899 |
Field configurable embedded computer system |
Eric Nelson, Lance N. Shelton, Jared Coy Roundy |
2002-10-29 |
$768,000 |
| 6285026 |
Borehole caliper derived from neutron porosity measurements |
David L. Best |
2001-09-04 |
$40,465,000 |
