E21B 43/11852
Hydraulically actuated
Official title: {hydraulically actuated}
E21B43/11852 (Hydraulically actuated) appears on 165 US grants and 78 published applications in this corpus.
Search patents in E21B- Granted patents
- 165
- Published applications
- 78
- Assignees
- 50
- Inventors
- 214
- Latest grant
- 26 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 2 | 0 |
| 1986 | 10 | 0 |
| 1987 | 7 | 0 |
| 1988 | 2 | 0 |
| 1989 | 7 | 0 |
| 1990 | 7 | 0 |
| 1991 | 4 | 0 |
| 1992 | 5 | 0 |
| 1993 | 5 | 0 |
| 1994 | 8 | 0 |
| 1995 | 4 | 0 |
| 1996 | 4 | 0 |
| 1997 | 5 | 0 |
| 1998 | 5 | 0 |
| 1999 | 7 | 0 |
| 2000 | 8 | 0 |
| 2001 | 2 | 1 |
| 2002 | 6 | 3 |
| 2003 | 4 | 4 |
| 2004 | 4 | 2 |
| 2005 | 0 | 1 |
| 2006 | 1 | 1 |
| 2007 | 1 | 0 |
| 2008 | 0 | 2 |
| 2009 | 0 | 1 |
| 2010 | 1 | 4 |
| 2011 | 5 | 3 |
| 2012 | 0 | 4 |
| 2013 | 2 | 4 |
| 2014 | 3 | 5 |
| 2015 | 6 | 6 |
| 2016 | 6 | 4 |
| 2017 | 3 | 5 |
| 2018 | 5 | 5 |
| 2019 | 3 | 6 |
| 2020 | 6 | 3 |
| 2021 | 4 | 5 |
| 2022 | 4 | 3 |
| 2023 | 5 | 1 |
| 2024 | 1 | 0 |
| 2025 | 0 | 1 |
| 2026 | 1 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Fixed-volume setting tool26 May 2026US 12,637,919 B2DBK Industries, LLC
- Fixed-volume setting tool12 Nov 2024US 12,139,984 B2DBK Industries, LLC
- Dissolvable time delay firing head and method5 Dec 2023US 11,834,936 B2Geodynamics, Inc.
- Perforating gun for oil and gas wells, and system and method for using the same26 Sep 2023US 11,767,739 B2Expro Americas, LLC
- Method and system for determining well delivery contributions using artificial intelligence15 Aug 2023US 11,725,502 B2Saudi Arabian Oil Company
- Fixed-Volume Setting Tool24 Sep 2026US 2026/0286798 A1DBK Industries, LLC
- Perforation system and method17 Sep 2026US 2026/0275834 A1Baker Hughes Oilfield Operations LLC
- Tubing or casing conveyed fluid sampling system6 Aug 2026US 2026/0226816 A1Halliburton Energy Services.Inc.
- Hydraulic delay tool for non-selective perforating operations in oil wells4 Jun 2026US 2026/0153018 A1Tassaroli S.A.
- Fixed-Volume Setting Tool20 Feb 2025US 2025/0059843 A1DBK Industries, LLC
Most cited
By later US patents
- Method and apparatus for providing controlled force transference to a wellbore tool200US 5,343,963 A1994
- Heat activated safety fuse188US 5,392,860 ABaker Hughes Incorporated · 1995
- Well completion method and apparatus158US 5,156,213 AHalliburton Company · 1992
- Apparatus and method for perforating and stimulating a subterranean formation156US 5,775,426 AMarathon Oil Company · 1998
- Method and system for performing a casing conveyed perforating process and other operations in wells143US 6,536,524 B1Marathon Oil Company · 2003