Issued Patents All Time
Showing 1–25 of 88 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12385389 | Methods for differentiating and quantifying non-radioactive tracers downhole | Jeremy Zhang | 2025-08-12 |
| 12037894 | Systems and methods for differentiating non-radioactive tracers downhole | Jeremy Zhang | 2024-07-16 |
| 12037895 | Methods for differentiating and quantifying non-radioactive tracers downhole | Jeremy Zhang | 2024-07-16 |
| 11781412 | Non-radioactive tracers to evaluate fracturing procedures | Jeremy Zhang | 2023-10-10 |
| 11649718 | Methods for differentiating and quantifying non-radioactive tracers downhole | Jeremy Zhang | 2023-05-16 |
| 11613989 | Systems and methods for differentiating non-radioactive tracers downhole | Jeremy Zhang | 2023-03-28 |
| 11384630 | Use of natural low-level radioactivity of raw materials to evaluate gravel pack and cement placement in wells | Jeremy Zhang | 2022-07-12 |
| 11131788 | Capture gamma ray spectroscopy for analyzing gravel-packs, frac-packs and cement | Jeremy Zhang | 2021-09-28 |
| 11078771 | Identification of cement in subterranean borehole regions using a ratio of capture to inelastic gamma rays | Xiaogang Han, Robert Duenckel, Jeremy Zhang | 2021-08-03 |
| 11015437 | Systems and methods for differentiating non-radioactive tracers downhole | Jeremy Zhang | 2021-05-25 |
| 10655445 | Non-radioactive tracers to evaluate fracturing procedures | Jeremy Zhang | 2020-05-19 |
| 10344581 | Use of natural low-level radioactivity of raw materials to evaluate gravel pack and cement placement in wells | Qianmei Zhang | 2019-07-09 |
| 10161237 | Identification of proppant in subterranean fracture zones using a ratio of capture to inelastic gamma rays | Xiaogang Han, Robert Duenckel, Qianmei Zhang | 2018-12-25 |
| 9274246 | Well-logging tool for determining properties in a flowstream | Daniel C. Minette, Phillip Phelps | 2016-03-01 |
| 9038715 | Use of PNC tools to determine the depth and relative location of proppant in fractures and the near borehole region | Xiaogang Han, Robert Duenckel | 2015-05-26 |
| 8805615 | Lithology and borehole condition independent methods for locating tagged proppant in induced subterranean formation fractures | — | 2014-08-12 |
| 8757256 | Orbital downhole separator | Liping Li, Syed Hamid, Jim B. Surjaatmadja, Robert Michael | 2014-06-24 |
| 8648309 | Spectral identification of proppant in subterranean fracture zones | Robert Duenckel | 2014-02-11 |
| 8449750 | Fluid separator with smart surface | Syed Hamid, Beegamudre N. Murali | 2013-05-28 |
| 8374974 | Neural network training data selection using memory reduced cluster analysis for field model development | Dingding Chen, John Andrew Quirein, Jacky M. Wiener, Jeffery L. Grable, Syed Hamid | 2013-02-12 |
| 8355873 | Method of reservoir characterization and delineation based on observations of displacements at the earth's surface | Ali Mese, Syed Hamid, Dingding Chen, John R. Howard, Neal G. Skinner | 2013-01-15 |
| 8234072 | Methods of identifying high neutron capture cross section doped proppant in induced subterranean formation fractures | Michael P. Smith, Robert Duenckel | 2012-07-31 |
| 8214151 | Methods of identifying high neutron capture cross section doped proppant in induced subterranean formation fractures | Robert Duenckel, Michael P. Smith | 2012-07-03 |
| 8211284 | Fluid separator with smart surface | Syed Hamid, Beegamudre N. Murali | 2012-07-03 |
| 8100177 | Method of logging a well using a thermal neutron absorbing material | Robert Duenckel | 2012-01-24 |