E21B 33/128
With a member expanded radially by axial pressure
Official title: with a member expanded radially by axial pressure (E21B33/122, E21B33/124 take precedence)
E21B33/128 (With a member expanded radially by axial pressure) appears on 1,055 US grants and 1,144 published applications in this corpus.
Search patents in E21B- Granted patents
- 1,055
- Published applications
- 1,144
- Assignees
- 291
- Inventors
- 1,426
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 2 | 0 |
| 1983 | 1 | 0 |
| 1984 | 5 | 0 |
| 1985 | 6 | 0 |
| 1986 | 2 | 0 |
| 1987 | 2 | 0 |
| 1988 | 2 | 0 |
| 1989 | 2 | 0 |
| 1990 | 1 | 0 |
| 1991 | 6 | 0 |
| 1992 | 3 | 0 |
| 1993 | 6 | 0 |
| 1994 | 9 | 0 |
| 1995 | 2 | 0 |
| 1996 | 5 | 0 |
| 1997 | 6 | 0 |
| 1998 | 5 | 0 |
| 1999 | 8 | 0 |
| 2000 | 4 | 0 |
| 2001 | 4 | 1 |
| 2002 | 7 | 5 |
| 2003 | 3 | 8 |
| 2004 | 7 | 13 |
| 2005 | 7 | 12 |
| 2006 | 8 | 9 |
| 2007 | 13 | 13 |
| 2008 | 5 | 15 |
| 2009 | 6 | 20 |
| 2010 | 17 | 19 |
| 2011 | 16 | 31 |
| 2012 | 21 | 29 |
| 2013 | 23 | 43 |
| 2014 | 21 | 53 |
| 2015 | 40 | 95 |
| 2016 | 58 | 90 |
| 2017 | 67 | 70 |
| 2018 | 68 | 105 |
| 2019 | 101 | 103 |
| 2020 | 108 | 86 |
| 2021 | 98 | 75 |
| 2022 | 65 | 74 |
| 2023 | 56 | 44 |
| 2024 | 47 | 48 |
| 2025 | 74 | 54 |
| 2026 | 36 | 29 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Retrievable packer element—anti extrusion barrier6 Oct 2026US 12,753,671 B2Expro North Sea Limited
- Garter spring including spacer elements6 Oct 2026US 12,753,672 B2Halliburton Energy Services.Inc.
- Anti-preset mechanism for production packers8 Sep 2026US 12,729,598 B2Halliburton Energy Services.Inc.
- Downhole tool having a fluid reservoir and methods thereof1 Sep 2026US 12,723,486 B2Brummert Applied Sciences, LLC
- Downhole tool and method of use25 Aug 2026US 12,716,317 B2The WellBoss Company, LLC
- Downhole tool and method of use8 Oct 2026US 2026/0309000 A1The WellBoss Company, LLC
- High expansion aggregate seal24 Sep 2026US 2026/0286805 A1Schlumberger Technology Corporation
- Pump down well stimulation24 Sep 2026US 2026/0286814 A1Torsch Inc.
- Method for setting a frac plug with a tubular metal seal17 Sep 2026US 2026/0275825 A1Paramount Design LLC
- Anti-preset mechanism for production packers27 Aug 2026US 2026/0251033 A1Halliburton Energy Services.Inc.
Most cited
By later US patents
- Sealing system for a well bore in which a hot fluid is circulated280US 4,513,816 ASociete Nationale Elf Aquitaine (Production) · 1985
- Metal seal well packer240US 5,685,369 AABB Vetco Gray Inc. · 1997
- Straight Bore metal-to-metal wellbore seal apparatus and method of sealing in a wellbore216US 5,511,620 A1996
- Deformable member175US 6,896,049 B2Zeroth Technology Ltd. · 2005
- Straight bore metal-to-metal wellbore seal apparatus and method of sealing in a wellbore174US 5,333,692 ABaker Hughes Incorporated · 1994