G01V 5/145
Using a neutron source combined with a gamma- or x-ray source
Official title: {using a neutron source combined with a gamma- or X-ray source}
G01V5/145 (Using a neutron source combined with a gamma- or x-ray source) appears on 19 US grants and 23 published applications in this corpus.
Search patents in G01V- Granted patents
- 19
- Published applications
- 23
- Assignees
- 14
- Inventors
- 56
- Latest grant
- 27 Jan 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1983 | 2 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 1 |
| 2007 | 0 | 1 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 1 | 0 |
| 2011 | 0 | 1 |
| 2012 | 0 | 0 |
| 2013 | 0 | 1 |
| 2014 | 1 | 1 |
| 2015 | 1 | 2 |
| 2016 | 0 | 3 |
| 2017 | 2 | 0 |
| 2018 | 1 | 1 |
| 2019 | 1 | 7 |
| 2020 | 2 | 1 |
| 2021 | 3 | 0 |
| 2022 | 1 | 0 |
| 2023 | 2 | 2 |
| 2024 | 1 | 0 |
| 2025 | 0 | 1 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Neutron absorbing dopant for reducing borehole fluid background in geochemical logging27 Jan 2026US 12,535,613 B2Halliburton Energy Services.Inc.
- Creation of near bit gamma ray image from a gamma ray curve20 Aug 2024US 12,066,590 B2Saudi Arabian Oil Company
- Data fusion enhanced multi-modality wellbore integrity inspection system10 Oct 2023US 11,782,181 B2GE Energy Oilfield Technology, Inc.
- 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 sigma18 Jul 2023US 11,703,611 B2China Petroleum & Chemical Corporation
- Geological constraint using probability functions in stochastic mineralogy modeling4 Jan 2022US 11,215,732 B2Baker Hughes Holdings LLC
- Neutron absorbing dopant for reducing borehole fluid background in geochemical logging21 May 2026US 2026/0140275 A1Halliburton Energy Services.Inc.
- Neutron Absorbing Dopant For Reducing Borehole Fluid Background In Geochemical Logging10 Jul 2025US 2025/0224536 A1Halliburton Energy Services.Inc.
- Creation of near bit gamma ray image from a gamma ray curve12 Oct 2023US 2023/0324580 A1Saudi Arabian Oil Company
- 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 sigma16 Mar 2023US 2023/0083045 A1China Petroleum & Chemical Corporation
- Intrinsic geological formation carbon to oxygen ratio measurements18 Jun 2020US 2020/0191993 A1Saudi Arabian Oil Company
Most cited
By later US patents
- Method and apparatus for determining in situ hydrocarbon characteristics including hydrogen density12US 4,416,151 ASchlumberger Technology Corporation · 1983
- Gamma ray spectra contrast sharpening8US 10,585,209 B2Baker Hughes, A Ge Company, LLC · 2020
- Apparatus and methods for interlaced density and neutron measurements8US 7,642,507 B2Schlumberger Technology Corporation · 2010
- Machine method for determining the presence and location of hydrocarbon deposits within a subsurface earth formation6US 4,403,290 ASchlumberger Technology Corporation · 1983
- Apparatus and methods for measuring formation characteristics5US 8,637,807 B2Schlumberger Technology Corporation · 2014