E21B 23/08
Introducing or running tools by fluid pressure
Official title: Introducing or running tools by fluid pressure, e.g. through-the-flow-line tool systems
E21B23/08 (Introducing or running tools by fluid pressure) appears on 841 US grants and 641 published applications in this corpus.
Search patents in E21B- Granted patents
- 841
- Published applications
- 641
- Assignees
- 260
- Inventors
- 1,213
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 9 | 0 |
| 1978 | 9 | 0 |
| 1979 | 4 | 0 |
| 1980 | 5 | 0 |
| 1981 | 11 | 0 |
| 1982 | 13 | 0 |
| 1983 | 12 | 0 |
| 1984 | 11 | 0 |
| 1985 | 14 | 0 |
| 1986 | 5 | 0 |
| 1987 | 10 | 0 |
| 1988 | 6 | 0 |
| 1989 | 7 | 0 |
| 1990 | 7 | 0 |
| 1991 | 4 | 0 |
| 1992 | 9 | 0 |
| 1993 | 8 | 0 |
| 1994 | 4 | 0 |
| 1995 | 10 | 0 |
| 1996 | 11 | 0 |
| 1997 | 9 | 0 |
| 1998 | 14 | 0 |
| 1999 | 29 | 0 |
| 2000 | 18 | 0 |
| 2001 | 23 | 4 |
| 2002 | 33 | 28 |
| 2003 | 19 | 11 |
| 2004 | 15 | 21 |
| 2005 | 9 | 16 |
| 2006 | 18 | 16 |
| 2007 | 12 | 14 |
| 2008 | 7 | 8 |
| 2009 | 13 | 18 |
| 2010 | 16 | 18 |
| 2011 | 11 | 16 |
| 2012 | 6 | 18 |
| 2013 | 10 | 27 |
| 2014 | 25 | 32 |
| 2015 | 17 | 42 |
| 2016 | 27 | 41 |
| 2017 | 35 | 34 |
| 2018 | 25 | 25 |
| 2019 | 38 | 38 |
| 2020 | 32 | 39 |
| 2021 | 44 | 51 |
| 2022 | 38 | 33 |
| 2023 | 39 | 38 |
| 2024 | 36 | 27 |
| 2025 | 30 | 17 |
| 2026 | 20 | 9 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Slidable isolation sleeve with I-shaped seal6 Oct 2026US 12,753,675 B2Halliburton Energy Services.Inc.
- Operating downhole wellbore valves15 Sep 2026US 12,735,957 B1Saudi Arabian Oil Company
- Extended chemical treatment in subterranean wells25 Aug 2026US 12,716,308 B2Odessa Separator, Inc.
- Adapter assembly for use with a wellbore tool string16 Jun 2026US 12,655,702 B2DynaEnergetics Europe GmbH
- Prediction based pump-off detection16 Jun 2026US 12,655,745 B2Halliburton Energy Services.Inc.
- Fixed-Volume Setting Tool24 Sep 2026US 2026/0286798 A1DBK Industries, LLC
- Sleeve and plug system and method23 Jul 2026US 2026/0210221 A1Republic Oil Tools, LLC
- Logging tools that include a distributed tensor resistivity logging system and processes for assembling and using same16 Jul 2026US 2026/0201789 A1Schlumberger Technology Corporation
- Variable intensity and selective pressure activated jar2 Jul 2026US 2026/0185414 A1HydraShock, L.L.C.
- Indication of compression loading in downhole tool strings25 Jun 2026US 2026/0176964 A1
Most cited
By later US patents
- Expandable joint connector281US 6,409,175 B1Grant Prideco, L.P. · 2002
- Well casing flotation device and method259US 5,181,571 AUnion Oil Company of California · 1993
- Methods of servicing a well bore using self-activating downhole tool183US 7,322,416 B2Halliburton Energy Services.Inc. · 2008
- Gravel packing system181US 5,332,038 ABaker Hughes Incorporated · 1994
- Scoophead running tool180US 5,411,082 ABaker Hughes Incorporated · 1995