E21B 23/10
Tools specially adapted therefor
E21B23/10 (Tools specially adapted therefor) appears on 198 US grants and 181 published applications in this corpus.
Search patents in E21B- Granted patents
- 198
- Published applications
- 181
- Assignees
- 90
- Inventors
- 332
- Latest grant
- 16 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 3 | 0 |
| 1978 | 4 | 0 |
| 1979 | 0 | 0 |
| 1980 | 2 | 0 |
| 1981 | 4 | 0 |
| 1982 | 6 | 0 |
| 1983 | 5 | 0 |
| 1984 | 0 | 0 |
| 1985 | 5 | 0 |
| 1986 | 2 | 0 |
| 1987 | 3 | 0 |
| 1988 | 3 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 2 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 2 | 0 |
| 2000 | 1 | 0 |
| 2001 | 2 | 1 |
| 2002 | 3 | 1 |
| 2003 | 1 | 3 |
| 2004 | 2 | 7 |
| 2005 | 1 | 7 |
| 2006 | 7 | 4 |
| 2007 | 4 | 5 |
| 2008 | 5 | 2 |
| 2009 | 2 | 0 |
| 2010 | 2 | 4 |
| 2011 | 1 | 2 |
| 2012 | 0 | 3 |
| 2013 | 3 | 6 |
| 2014 | 3 | 7 |
| 2015 | 4 | 11 |
| 2016 | 6 | 9 |
| 2017 | 4 | 10 |
| 2018 | 5 | 10 |
| 2019 | 11 | 15 |
| 2020 | 10 | 15 |
| 2021 | 18 | 22 |
| 2022 | 13 | 8 |
| 2023 | 15 | 10 |
| 2024 | 9 | 8 |
| 2025 | 14 | 10 |
| 2026 | 6 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Adapter assembly for use with a wellbore tool string16 Jun 2026US 12,655,702 B2DynaEnergetics Europe GmbH
- Pressure intensifier for hydraulically setting a downhole tool2 Jun 2026US 12,644,351 B1Halliburton Energy Services.Inc.
- Systems and methods for multi-offset seismic profiling2 Jun 2026US 12,644,373 B2Saudi Arabian Oil Company
- Rotary flow control apparatus19 May 2026US 12,631,082 B1Tempress Technologies, Inc.
- Variable intensity and selective pressure activated jar3 Mar 2026US 12,565,818 B2Tenax Energy System, LLC
- Variable intensity and selective pressure activated jar2 Jul 2026US 2026/0185414 A1HydraShock, L.L.C.
- Systems and methods for multi-offset seismic profiling18 Dec 2025US 2025/0383466 A1Aramco Services Company
- Adapter assembly for use with a wellbore tool string4 Dec 2025US 2025/0369296 A1DynaEnergetics Europe GmbH
- Plug release in a subterranean well26 Jun 2025US 2025/0207472 A1
- Drop tool impact shock mitigation with fluid retention method and system3 Apr 2025US 2025/0109645 A1Scientific Drilling International, Inc.
Most cited
By later US patents
- Methods of servicing a well bore using self-activating downhole tool183US 7,322,416 B2Halliburton Energy Services.Inc. · 2008
- Apparatus for transporting measuring and/or logging equipment in a borehole163US 4,676,310 A1987
- Downhole tool with navigation system161US 7,363,967 B2Halliburton Energy Services.Inc. · 2008
- Freely moving oil field assembly for data gathering and or producing an oil well113US 6,170,573 B22001
- Emergency well-control vessel110US 4,336,843 AOdeco Engineers Inc. · 1982