E21B 23/0416
Characterised by force amplification arrangements
Official title: {characterised by force amplification arrangements}
E21B23/0416 (Characterised by force amplification arrangements) appears on 46 US grants and 41 published applications in this corpus.
Search patents in E21B- Granted patents
- 46
- Published applications
- 41
- Assignees
- 22
- Inventors
- 75
- Latest grant
- 2 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 1 |
| 2003 | 1 | 2 |
| 2004 | 0 | 3 |
| 2005 | 1 | 6 |
| 2006 | 8 | 0 |
| 2007 | 0 | 2 |
| 2008 | 1 | 0 |
| 2009 | 2 | 1 |
| 2010 | 1 | 4 |
| 2011 | 0 | 1 |
| 2012 | 5 | 1 |
| 2013 | 1 | 0 |
| 2014 | 0 | 2 |
| 2015 | 1 | 1 |
| 2016 | 0 | 3 |
| 2017 | 2 | 0 |
| 2018 | 2 | 2 |
| 2019 | 0 | 2 |
| 2020 | 3 | 0 |
| 2021 | 1 | 1 |
| 2022 | 0 | 3 |
| 2023 | 3 | 2 |
| 2024 | 1 | 2 |
| 2025 | 5 | 1 |
| 2026 | 2 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Pressure intensifier for hydraulically setting a downhole tool2 Jun 2026US 12,644,351 B1Halliburton Energy Services.Inc.
- Apparatus and methods for operating downhole tools26 May 2026US 12,637,917 B2Wellbore Integrity Solutions LLC
- Ratcheting setting tool for an expandable seal in a wellbore18 Nov 2025US 12,473,795 B2Halliburton Energy Services.Inc.
- Intensifying setting tool for packer29 Jul 2025US 12,371,961 B1Weatherford Technology Holdings, LLC
- System and method for creating pressure waves in a well17 Jun 2025US 12,331,616 B2Schlumberger Technology Corporation
- Apparatus and Methods for Operating Downhole Tools30 Apr 2026US 2026/0117612 A1Wellbore Integrity Solutions LLC
- Ratcheting setting tool for an expandable seal in a wellbore28 Aug 2025US 2025/0270892 A1Halliburton Energy Services.Inc.
- Expandable Retrievable Plug and Methods of Use18 Jul 2024US 2024/0240534 A1Saudi Arabian Oil Company
- System and method for creating pressure waves in a well4 Jul 2024US 2024/0218760 A1Schlumberger Technology Corporation
- Debris exclusive-pressure intensified-pressure balanced setting tool for liner hanger9 Nov 2023US 2023/0358111 A1Weatherford Technology Holdings, LLC
Most cited
By later US patents
- Expandable packer with anchoring feature115US 6,986,390 B2Baker Hughes Incorporated · 2006
- Expandable packer with anchoring feature83US 7,051,805 B2Baker Hughes Incorporated · 2006
- Downhole fluid pumping apparatus and method76US 7,124,819 B2Schlumberger Technology Corporation · 2006
- Expandable packer with anchoring feature75US 6,959,759 B2Baker Hughes Incorporated · 2005
- Downhole force generator46US 5,070,941 AOtis Engineering Corporation · 1991