E21B 23/0417
Down-hole non-explosive gas generating means
Official title: {Down-hole non-explosive gas generating means, e.g. by chemical reaction}
E21B23/0417 (Down-hole non-explosive gas generating means) appears on 52 US grants and 55 published applications in this corpus.
Search patents in E21B- Granted patents
- 52
- Published applications
- 55
- Assignees
- 33
- Inventors
- 105
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1987 | 2 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 2 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 1 |
| 2003 | 1 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 2 |
| 2006 | 1 | 1 |
| 2007 | 1 | 1 |
| 2008 | 1 | 2 |
| 2009 | 1 | 1 |
| 2010 | 0 | 0 |
| 2011 | 0 | 4 |
| 2012 | 0 | 2 |
| 2013 | 1 | 3 |
| 2014 | 4 | 3 |
| 2015 | 2 | 1 |
| 2016 | 3 | 3 |
| 2017 | 1 | 0 |
| 2018 | 1 | 2 |
| 2019 | 3 | 3 |
| 2020 | 1 | 6 |
| 2021 | 4 | 6 |
| 2022 | 5 | 2 |
| 2023 | 4 | 4 |
| 2024 | 5 | 4 |
| 2025 | 5 | 3 |
| 2026 | 3 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Gas driven wireline release tool25 Aug 2026US 12,716,307 B2DynaEnergetics Europe GmbH
- Inflatable bore hole plug14 Jul 2026US 12,680,406 B2Mti Group Pty Ltd
- Setting tool for actuating a tool in a wellbore10 Mar 2026US 12,571,272 B2DynaEnergeics Europe GmbH
- Actuating a downhole device with a reactive metal25 Nov 2025US 12,480,373 B2Halliburton Energy Services.Inc.
- Gas driven wireline release tool5 Aug 2025US 12,378,833 B2DynaEnergetics Europe GmbH
- Setting tool for actuating a tool in a wellbore30 Jul 2026US 2026/0218578 A1DynaEnergetics Europe GmbH
- Gas driven wireline release tool25 Dec 2025US 2025/0389164 A1DynaEnergetics Europe GmbH
- System and method for energy and resource extraction with reduced emissions26 Jun 2025US 2025/0207821 A1Cgg Services SAS
- System and method for energy and resource extraction with reduced emissions27 Feb 2025US 2025/0067481 A1Cgg Services SAS
- Inflatable bore hole plug24 Oct 2024US 2024/0352815 A1Mti Group Pty Ltd
Most cited
By later US patents
- Thermally-enhanced oil recovery method and apparatus399US 4,694,907 ACarbotek, Inc. · 1987
- Gas turbine system comprising closed system of fuel and combustion gas using underground coal layer101US 7,143,572 B2Kawasaki Jukogyo Kabushiki Kaisha · 2006
- Annular shaped power charge for subsurface well devices65US 5,211,224 ABaker Hughes Incorporated · 1993
- Electric pressure actuating tool and method45US 7,604,062 B2Baker Hughes Incorporated · 2009
- Downhole gas compression30US 6,601,651 B2Weir Pumps Limited · 2003