G01V 5/101
And detecting the secondary y-rays produced in the surrounding layers of the
Official title: {and detecting the secondary Y-rays produced in the surrounding layers of the bore hole}
G01V5/101 (And detecting the secondary y-rays produced in the surrounding layers of the) appears on 420 US grants and 309 published applications in this corpus.
Search patents in G01V- Granted patents
- 420
- Published applications
- 309
- Assignees
- 62
- Inventors
- 394
- Latest grant
- 18 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 15 | 0 |
| 1977 | 16 | 0 |
| 1978 | 5 | 0 |
| 1979 | 6 | 0 |
| 1980 | 6 | 0 |
| 1981 | 2 | 0 |
| 1982 | 5 | 0 |
| 1983 | 9 | 0 |
| 1984 | 11 | 0 |
| 1985 | 6 | 0 |
| 1986 | 5 | 0 |
| 1987 | 9 | 0 |
| 1988 | 7 | 0 |
| 1989 | 3 | 0 |
| 1990 | 6 | 0 |
| 1991 | 12 | 0 |
| 1992 | 6 | 0 |
| 1993 | 1 | 0 |
| 1994 | 3 | 0 |
| 1995 | 5 | 0 |
| 1996 | 2 | 0 |
| 1997 | 3 | 0 |
| 1998 | 3 | 0 |
| 1999 | 1 | 0 |
| 2000 | 3 | 0 |
| 2001 | 1 | 0 |
| 2002 | 2 | 2 |
| 2003 | 2 | 3 |
| 2004 | 1 | 2 |
| 2005 | 1 | 8 |
| 2006 | 5 | 7 |
| 2007 | 6 | 12 |
| 2008 | 8 | 4 |
| 2009 | 6 | 13 |
| 2010 | 6 | 11 |
| 2011 | 7 | 11 |
| 2012 | 9 | 16 |
| 2013 | 9 | 17 |
| 2014 | 18 | 19 |
| 2015 | 12 | 22 |
| 2016 | 18 | 21 |
| 2017 | 27 | 21 |
| 2018 | 21 | 22 |
| 2019 | 24 | 16 |
| 2020 | 14 | 12 |
| 2021 | 16 | 17 |
| 2022 | 7 | 12 |
| 2023 | 16 | 8 |
| 2024 | 12 | 10 |
| 2025 | 15 | 11 |
| 2026 | 7 | 12 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Pipeline inspection apparatus comprising multiple barrel sections, articulating components, and radially extending structures18 Aug 2026US 12,710,561 B2Under Cover Technologies Corp.
- Gamma-ray spectroscopy logging tool18 Aug 2026US 12,710,562 B2Halliburton Energy Services.Inc.
- Replaceable thermal neutron absorbing sleeve for neutron detector21 Jul 2026US 12,687,102 B2Halliburton Energy Services.Inc.
- Integrated pulsed neutron logging tool for spectroscopy and porosity measurements16 Jun 2026US 12,656,518 B2Halliburton Energy Services.Inc.
- Universal neutron pulsing scheme for logging operations16 Jun 2026US 12,656,519 B2Halliburton Energy Services.Inc.
- Variable energy neutron well logging30 Jul 2026US 2026/0219416 A1Halliburton Energy Services.Inc.
- Downhole tools that include a radiation detector and processes for using same16 Jul 2026US 2026/0202573 A1Schlumberger Technology Corporation
- Techniques for Determining Carbon to Oxygen Ratio Using Neutron-Induced Gamma Ray Spectroscopy9 Jul 2026US 2026/0194684 A1Weatherford Technology Holdings, LLC
- Tool and method for fast three-dimensional modelling2 Jul 2026US 2026/0186164 A1Schlumberger Technology Corporation
- Pulsed neutron methods for downhole formation evaluation and monitoring of natural hydrogen source rock and reservoirs28 May 2026US 2026/0147134 A1Halliburton Energy Services.Inc.
Most cited
By later US patents
- Combination of epithermal and inelastic neutron scattering methods to locate coal and oil shale zones275US 3,947,683 ATexaco Inc. · 1976
- Method for monitoring the hydraulic fracturing of a subsurface formation106US 4,926,940 AMobil Oil Corporation · 1990
- Method for determining density of an earth formation78US 5,804,820 AJapan National Oil Corporation · 1998
- Methods and apparatus for gamma-ray spectroscopy and like measurements71US 4,883,956 ASchlumberger Technology Corporation · 1989
- Method and apparatus for determining density of earth formations59US 5,608,215 ASchlumberger Technology Corporation · 1997