Issued Patents All Time
Showing 26–50 of 100 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10619480 | Multiple depth of investigation nuclear magnetic resonance logging for determining the porosity and pore type of subterranean formations | Songhua Chen, Rebecca Corina Jachmann | 2020-04-14 |
| 10527748 | Nuclear magnetic resonance sensing device for downhole measurements | Lilong Li, Songhua Chen | 2020-01-07 |
| 10495588 | Borehole signal reduction for a side-looking NMR logging tool using a magnet assembly | Lilong Li, Rebecca Corina Jachmann | 2019-12-03 |
| 10436860 | Borehole signal reduction for a side-looking NMR logging tool using an antenna | Lilong Li, Rebecca Corina Jachmann | 2019-10-08 |
| 10422759 | Gradient multi-frequency nuclear magnetic resonance with inter-band interference | Shriram Sarvotham | 2019-09-24 |
| 10261211 | Nuclear magnetic resonance logging tool with quadrature coil configuration | Lilong Li | 2019-04-16 |
| 10222505 | Combined NMR-resistivity measurement apparatus, systems, and methods | Songhua Chen | 2019-03-05 |
| 10197698 | Downhole nuclear magnetic resonance (NMR) tool with transversal-dipole antenna configuration | Songhua Chen | 2019-02-05 |
| 10082595 | Ultra-slim nuclear magnetic resonance tool for oil well logging | — | 2018-09-25 |
| 10067259 | Downhole detector with reduced ringing | Chang S. Shin, David R. Beard, William D. Johnson | 2018-09-04 |
| 10048401 | Ultra-slim nuclear magnetic resonance tool for oil well logging | — | 2018-08-14 |
| 9880307 | Induction logging sensor | Stanislav W. Forgang, Steven A. Morris, Jonathan F. Hook, Yi Liu | 2018-01-30 |
| 9864031 | Measurement of NMR characteristics of an object containing fast transversal relaxation components | — | 2018-01-09 |
| 9835754 | Switching an operating mode of an NMR logging tool | Lilong Li | 2017-12-05 |
| 9784881 | Nuclear magnetic resonance apparatus, systems, and methods | Rebecca Corina Jachmann, Lilong Li | 2017-10-10 |
| 9617846 | Methods of transient EM data compression | Marina N. Nikitenko, Michael Rabinovich, Anton Mosin | 2017-04-11 |
| 9605527 | Reducing rotational vibration in rotational measurements | Robert A. Estes, Fei Le, Hanno Reckmann, Christian Herbig | 2017-03-28 |
| 9588250 | Three-coil system with short nonconductive inserts for transient MWD resistivity measurements | Gregory B. Itskovich | 2017-03-07 |
| 9482778 | Ultra-slim nuclear magnetic resonance tool for oil well logging | — | 2016-11-01 |
| 9377557 | Azimuthally-selective downhole nuclear magnetic resonance (NMR) tool | Songhua Chen | 2016-06-28 |
| 9354347 | Method and apparatus for deep transient resistivity measurement while drilling | Sushant Dutta | 2016-05-31 |
| 9297921 | DTEM with short spacing for deep, ahead of the drill bit measurements | Gregory B. Itskovich, Michael Rabinovich, Sergey Martakov, Emma Iomdina | 2016-03-29 |
| 9151150 | Apparatus and methods for well-bore proximity measurement while drilling | Sheng Fang | 2015-10-06 |
| 9121967 | Method and apparatus for well-bore proximity measurement while drilling | Fei Le | 2015-09-01 |
| 9075164 | Apparatus and method for deep transient resistivity measurement | — | 2015-07-07 |