E21B 31/113
Hydraulically-operated
Official title: hydraulically-operated
E21B31/113 (Hydraulically-operated) appears on 233 US grants and 148 published applications in this corpus.
Search patents in E21B- Granted patents
- 233
- Published applications
- 148
- Assignees
- 90
- Inventors
- 272
- Latest grant
- 18 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 3 | 0 |
| 1978 | 5 | 0 |
| 1979 | 2 | 0 |
| 1980 | 8 | 0 |
| 1981 | 3 | 0 |
| 1982 | 3 | 0 |
| 1983 | 0 | 0 |
| 1984 | 3 | 0 |
| 1985 | 4 | 0 |
| 1986 | 2 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 4 | 0 |
| 1990 | 3 | 0 |
| 1991 | 4 | 0 |
| 1992 | 5 | 0 |
| 1993 | 3 | 0 |
| 1994 | 2 | 0 |
| 1995 | 4 | 0 |
| 1996 | 3 | 0 |
| 1997 | 4 | 0 |
| 1998 | 3 | 0 |
| 1999 | 5 | 0 |
| 2000 | 4 | 0 |
| 2001 | 8 | 1 |
| 2002 | 4 | 3 |
| 2003 | 3 | 6 |
| 2004 | 6 | 4 |
| 2005 | 1 | 4 |
| 2006 | 5 | 4 |
| 2007 | 6 | 4 |
| 2008 | 2 | 2 |
| 2009 | 1 | 11 |
| 2010 | 4 | 2 |
| 2011 | 4 | 5 |
| 2012 | 4 | 4 |
| 2013 | 7 | 10 |
| 2014 | 5 | 2 |
| 2015 | 6 | 6 |
| 2016 | 2 | 9 |
| 2017 | 9 | 5 |
| 2018 | 5 | 9 |
| 2019 | 9 | 12 |
| 2020 | 16 | 9 |
| 2021 | 8 | 7 |
| 2022 | 11 | 8 |
| 2023 | 9 | 11 |
| 2024 | 7 | 5 |
| 2025 | 5 | 4 |
| 2026 | 4 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Jarring device18 Aug 2026US 12,709,956 B1Petromac IP Limited
- Variable intensity and selective pressure activated jar3 Mar 2026US 12,565,818 B2Tenax Energy System, LLC
- Reciprocating drive apparatus10 Feb 2026US 12,546,177 B2Rotojar Innovations Limited
- System for dislodging and extracting tubing from a wellbore3 Feb 2026US 12,540,520 B2Tenax Energy Systems, LLC
- Impact jar delay, activation indicator, shock absorber, and relatch assist16 Dec 2025US 12,497,851 B2Weatherford Technology Holdings, LLC
- Variable intensity and selective pressure activated jar2 Jul 2026US 2026/0185414 A1HydraShock, L.L.C.
- Impact Jar Delay, Activation Indicator, Shock Absorber, and Relatch Assist21 Aug 2025US 2025/0263996 A1Weatherford Technology Holdings, LLC
- Adjustable Hydraulic Jarring Device3 Jul 2025US 2025/0215760 A1
- Methods and apparatus for retrieving a wireline using a release sub1 May 2025US 2025/0137339 A1Saudi Arabian Oil Company
- Variable intensity and selective pressure activated jar23 Jan 2025US 2025/0027377 A1HydraShock, L.L.C.
Most cited
By later US patents
- Downhole anchoring tools conveyed by non-rigid carriers190US 6,315,043 B1Schlumberger Technology Corporation · 2001
- Fluid operated vibratory jar with rotating bit155US 5,156,223 A1992
- Bidirectional fluid operated vibratory jar140US 4,462,471 A1984
- Downhole anchoring tools conveyed by non-rigid carriers135US 6,651,747 B2Schlumberger Technology Corporation · 2003
- Fluid operated vibratory jar with rotating bit128US 4,958,691 A1990