Issued Patents All Time
Showing 1–20 of 20 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12385389 | Methods for differentiating and quantifying non-radioactive tracers downhole | Harry D. Smith, Jr. | 2025-08-12 |
| 12248115 | Method and apparatus for using pulsed neutron generators and dual-function detectors to obtain formation mineralogy | Sheng Zhan, Zongqi Chen, Xianghua Liu | 2025-03-11 |
| 12216240 | Method and apparatus for obtaining real-time formation gas saturation | Sheng Zhan, Zongqi Chen, Xianghua Liu | 2025-02-04 |
| 12196911 | Method and apparatus for obtaining real-time downhole oil saturation | Sheng Zhan | 2025-01-14 |
| 12092787 | Apparatus and method for obtaining real-time true formation porosity using pulsed neutron well logging tool having dual-function detectors | Sheng Zhan | 2024-09-17 |
| 12037894 | Systems and methods for differentiating non-radioactive tracers downhole | Harry D. Smith, Jr. | 2024-07-16 |
| 12037895 | Methods for differentiating and quantifying non-radioactive tracers downhole | Harry D. Smith, Jr. | 2024-07-16 |
| 11906692 | Nuclear logging tools and applications thereof | Sheng Zhan | 2024-02-20 |
| 11892589 | Method and apparatus for enhanced formation porosity measurement using pulsed neutron source and dual-function detectors | Sheng Zhan | 2024-02-06 |
| 11781412 | Non-radioactive tracers to evaluate fracturing procedures | Harry D. Smith, Jr. | 2023-10-10 |
| 11733421 | Method for obtaining near-wellbore true borehole sigma and true formation sigma by using a nuclear logging tool during oil and gas exploration | Sheng Zhan | 2023-08-22 |
| 11703611 | Computer-implemented method of using a non-transitory computer readable memory device with a pre programmed neural network and a trained neural network computer program product for obtaining a true borehole sigma and a true formation sigma | Sheng Zhan | 2023-07-18 |
| 11649718 | Methods for differentiating and quantifying non-radioactive tracers downhole | Harry D. Smith, Jr. | 2023-05-16 |
| 11613989 | Systems and methods for differentiating non-radioactive tracers downhole | Harry D. Smith, Jr. | 2023-03-28 |
| 11474277 | Acquiring formation porosity using multiple dual-function detectors and neural network | Sheng Zhan | 2022-10-18 |
| 11384630 | Use of natural low-level radioactivity of raw materials to evaluate gravel pack and cement placement in wells | Harry D. Smith, Jr. | 2022-07-12 |
| 11131788 | Capture gamma ray spectroscopy for analyzing gravel-packs, frac-packs and cement | Harry D. Smith, Jr. | 2021-09-28 |
| 11078771 | Identification of cement in subterranean borehole regions using a ratio of capture to inelastic gamma rays | Xiaogang Han, Harry D. Smith, Jr., Robert Duenckel | 2021-08-03 |
| 11015437 | Systems and methods for differentiating non-radioactive tracers downhole | Harry D. Smith, Jr. | 2021-05-25 |
| 10655445 | Non-radioactive tracers to evaluate fracturing procedures | Harry D. Smith, Jr. | 2020-05-19 |