E21B 34/14
Operated by movement of tools
Official title: operated by movement of tools, e.g. sleeve valves operated by pistons or wire line tools {(E21B34/066 takes precedence)}
E21B34/14 (Operated by movement of tools) appears on 2,219 US grants and 2,123 published applications in this corpus.
Search patents in E21B- Granted patents
- 2,219
- Published applications
- 2,123
- Assignees
- 475
- Inventors
- 2,766
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 9 | 0 |
| 1977 | 7 | 0 |
| 1978 | 12 | 0 |
| 1979 | 4 | 0 |
| 1980 | 5 | 0 |
| 1981 | 23 | 0 |
| 1982 | 14 | 0 |
| 1983 | 19 | 0 |
| 1984 | 17 | 0 |
| 1985 | 11 | 0 |
| 1986 | 8 | 0 |
| 1987 | 17 | 0 |
| 1988 | 8 | 0 |
| 1989 | 18 | 0 |
| 1990 | 14 | 0 |
| 1991 | 10 | 0 |
| 1992 | 17 | 0 |
| 1993 | 14 | 0 |
| 1994 | 22 | 0 |
| 1995 | 12 | 0 |
| 1996 | 13 | 0 |
| 1997 | 7 | 0 |
| 1998 | 21 | 0 |
| 1999 | 15 | 0 |
| 2000 | 14 | 0 |
| 2001 | 21 | 3 |
| 2002 | 15 | 13 |
| 2003 | 16 | 23 |
| 2004 | 27 | 37 |
| 2005 | 19 | 19 |
| 2006 | 32 | 25 |
| 2007 | 9 | 31 |
| 2008 | 27 | 30 |
| 2009 | 25 | 39 |
| 2010 | 30 | 43 |
| 2011 | 29 | 72 |
| 2012 | 41 | 70 |
| 2013 | 46 | 127 |
| 2014 | 78 | 112 |
| 2015 | 83 | 150 |
| 2016 | 109 | 151 |
| 2017 | 109 | 114 |
| 2018 | 131 | 113 |
| 2019 | 149 | 126 |
| 2020 | 122 | 139 |
| 2021 | 136 | 144 |
| 2022 | 149 | 153 |
| 2023 | 144 | 146 |
| 2024 | 164 | 110 |
| 2025 | 114 | 80 |
| 2026 | 63 | 53 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Non-destructively decoupling electric actuator of downhole flow control device22 Sep 2026US 12,742,366 B2Halliburton Energy Services.Inc.
- Downhole tool system comprising hydraulically actuated shifting assembly and related methods22 Sep 2026US 12,742,368 B2Kobold Corporation
- Multi-functioning electric cleaning/flow splitter/circulation sub22 Sep 2026US 12,742,369 B1
- Operating downhole wellbore valves15 Sep 2026US 12,735,957 B1Saudi Arabian Oil Company
- Dart and clutch assembly15 Sep 2026US 12,735,962 B2Epic Lift Systems
- Apparatus for recovering debris from a wellbore8 Oct 2026US 2026/0308994 A1Grant Prideco, L.P.
- System for delayed dissolution of downhole balls8 Oct 2026US 2026/0309002 A1Tenax Energy Systems, LLC
- Methods and systems for performing hydraulic fracturing operations8 Oct 2026US 2026/0309013 A1ExxonMobil Technology and Engineering Company
- Hydraulic fracturing method using lightweight proppant particles to reduce erosion and improve conductivity8 Oct 2026US 2026/0309016 A1ExxonMobil Technology and Engineering Company
- Multi-functioning electric cleaning/flow splitter/circulation sub24 Sep 2026US 2026/0286810 A1Baker Hughes Oilfield Operations LLC
Most cited
By later US patents
- Downhole surge pressure reduction system and method of use340US 5,960,881 AJerry P. Allamon · 1999
- System for completing multiple well intervals336US 7,387,165 B2Schlumberger Technology Corporation · 2008
- Multiple-set downhole tool and method210US 4,893,678 ATam International, Inc. · 1990
- Frac system without intervention194US 7,325,617 B2Baker Hughes Incorporated · 2008
- Circulation tool193US 6,253,861 B1Specialised Petroleum Services Limited · 2001