E21B 34/103
With a shear pin
Official title: {with a shear pin}
E21B34/103 (With a shear pin) appears on 305 US grants and 247 published applications in this corpus.
Search patents in E21B- Granted patents
- 305
- Published applications
- 247
- Assignees
- 115
- Inventors
- 461
- Latest grant
- 4 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 3 | 0 |
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 3 | 0 |
| 1982 | 7 | 0 |
| 1983 | 3 | 0 |
| 1984 | 6 | 0 |
| 1985 | 1 | 0 |
| 1986 | 5 | 0 |
| 1987 | 5 | 0 |
| 1988 | 1 | 0 |
| 1989 | 2 | 0 |
| 1990 | 5 | 0 |
| 1991 | 5 | 0 |
| 1992 | 1 | 0 |
| 1993 | 3 | 0 |
| 1994 | 3 | 0 |
| 1995 | 2 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 3 | 0 |
| 2001 | 6 | 3 |
| 2002 | 4 | 5 |
| 2003 | 4 | 5 |
| 2004 | 5 | 2 |
| 2005 | 3 | 3 |
| 2006 | 2 | 2 |
| 2007 | 3 | 1 |
| 2008 | 1 | 4 |
| 2009 | 3 | 5 |
| 2010 | 4 | 1 |
| 2011 | 5 | 6 |
| 2012 | 6 | 13 |
| 2013 | 1 | 18 |
| 2014 | 11 | 18 |
| 2015 | 13 | 14 |
| 2016 | 21 | 17 |
| 2017 | 5 | 16 |
| 2018 | 16 | 13 |
| 2019 | 23 | 16 |
| 2020 | 21 | 17 |
| 2021 | 13 | 17 |
| 2022 | 19 | 15 |
| 2023 | 15 | 19 |
| 2024 | 24 | 6 |
| 2025 | 7 | 5 |
| 2026 | 6 | 6 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
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- Method and apparatus for downhole fluid fill-up31 Mar 2026US 12,590,498 B1Oilfield Service Professionals, LLC
- Downhole valve assembly with cement-isolated flowpath10 Mar 2026US 12,571,285 B2NCS Multistage Inc.
- Bi-directional Running Tool for Expandable Liner Hanger8 Oct 2026US 2026/0309007 A1Halliburton Energy Services.Inc.
- Flapper type pump out pplug10 Sep 2026US 2026/0266161 A1
- Tubing or casing conveyed fluid sampling system6 Aug 2026US 2026/0226816 A1Halliburton Energy Services.Inc.
- Biasing piston based equiflow rov for preventing well kick off issue9 Jul 2026US 2026/0193958 A1Halliburton Energy Services.Inc.
- Plug Breaker18 Jun 2026US 2026/0168343 A1TCO Group AS
Most cited
By later US patents
- Sand control screen assembly and treatment method using the same152US 7,096,945 B2Halliburton Energy Services.Inc. · 2006
- Pressure operated circulation valve136US 5,048,611 ALindsey Completion Systems, Inc. · 1991
- Sand control screen assembly and treatment method using the same127US 6,719,051 B2Halliburton Energy Services.Inc. · 2004
- Expandable packer isolation system111US 6,725,934 B2Baker Hughes Incorporated · 2004
- Sand control screen assembly and treatment method using the same110US 6,899,176 B2Halliburton Energy Services.Inc. · 2005