Issued Patents All Time
Showing 1–25 of 36 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12332401 | System and method for downhole gamma ray inspection behind multistring completions | Joseph Olaiya, Allan Jones, Peng Yuan, Toyli Anniyev | 2025-06-17 |
| 11939858 | Identification of wellbore defects using machine learning systems | Peng Yuan, Jaehyuk Lee | 2024-03-26 |
| 11906690 | Obtaining inelastic spectra free of detector born gamma rays induced by neutrons | Toyli Anniyev, Peng Yuan, Maxim Vasilyev, David M. Chace | 2024-02-20 |
| 11774630 | Systems and methods for determining clean inelastic and capture spectra | Maxim Vasilyev, Toyli Anniyev, Ezzatollah Esfandiari | 2023-10-03 |
| 11067716 | System and method for a downhole gamma ray instrument | Peng Yuan, Marc Ramirez, Allan Jones | 2021-07-20 |
| 11066926 | Systems and methods for downhole logging with enhanced sensitivity and azimuthal resolution | Marc Ramirez | 2021-07-20 |
| 10895662 | Inelastic spectrum measurement system and method | — | 2021-01-19 |
| 10725200 | Water saturation determination using an oxygen estimate and formation lithology | Rafay Z. Ansari, W. Allen Gilchrist, David M. Chace | 2020-07-28 |
| 10585209 | Gamma ray spectra contrast sharpening | Toyli Anniyev, Maxim Vasilyev, David M. Chace | 2020-03-10 |
| 10520641 | Gamma calibration | Toyli Anniyev, David M. Chace, Randy Gold, Otto N. Fanini, Sandeep Gade +1 more | 2019-12-31 |
| 10436933 | Digital spectrometer for measuring ironizing radiation downhole | Quming Zhou, Toyli Anniyev, Steven M. Bliven | 2019-10-08 |
| 10324225 | Water saturation determination using an oxygen estimate and formation lithology | David M. Chace, Rafay Z. Ansari, W. Allen Gilchrist, Michael Bruner | 2019-06-18 |
| 10324224 | Elemental concentration determination using neutron-induced activation gamma radiation | Rafay Z. Ansari, W. Allen Gilchrist, David M. Chace | 2019-06-18 |
| 10185052 | Constrained backscatter gamma ray casing and cement inspection tool | Douglas J. Patterson, Elizaveta Vladimirovna Onegova, Rocco DiFoggio, Otto N. Fanini | 2019-01-22 |
| 9766368 | Time dependent neutron-gamma spectroscopy | Margarete M. Kopal, Loren P. Roberts | 2017-09-19 |
| 9753177 | Standoff specific corrections for density logging | Joseph C. Koudelka | 2017-09-05 |
| 9696454 | Identifying weighting material sag with pulsed neutron logs | Sandeep Gade, Qiong Zhang, David M. Chace, Otto N. Fanini, Yonghwee Kim | 2017-07-04 |
| 9599743 | Density measurements using detectors on a pulsed neutron measurement platform | David M. Chace, Maxim Vasilyev, Sandeep Gade, Steven M. Bliven | 2017-03-21 |
| 9400340 | Sourceless density measurements with neutron induced gamma normalization | — | 2016-07-26 |
| 9360586 | Water saturation determination using an oxygen estimate and formation lithology | David M. Chace, Rafay Z. Ansari, W. Allen Gilchrist, Michael Bruner | 2016-06-07 |
| 9341737 | Measuring total, epithermal and thermal neutron formation porosities with one single set of neutron detectors and a pulsed neutron generator | Margarete M. Kopal, Loren P. Roberts | 2016-05-17 |
| 9328561 | Drill bits with sensors for formation evaluation | Tu Tien Trinh, Eric C. Sullivan, Xiaomin Cheng, Gregory Prevost, Yi Liu +1 more | 2016-05-03 |
| 9329303 | Single detector detection and characterization of thermal and epithermal neutrons from an earth formation | Robbie L. Allen, Nikolay N. Velker | 2016-05-03 |
| 9261612 | Nuclear radiation detector calibration downhole | Daniel T. Georgi | 2016-02-16 |
| 9261622 | Elemental concentration determination using neutron-induced activation gamma radiation | Rafay Z. Ansari, W. Allen Gilchrist, David M. Chace | 2016-02-16 |