E21B 33/1212
Including a metal-to-metal seal element
Official title: {including a metal-to-metal seal element}
E21B33/1212 (Including a metal-to-metal seal element) appears on 202 US grants and 204 published applications in this corpus.
Search patents in E21B- Granted patents
- 202
- Published applications
- 204
- Assignees
- 94
- Inventors
- 385
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 2 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 2 | 0 |
| 1986 | 3 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 3 | 0 |
| 1991 | 0 | 0 |
| 1992 | 2 | 0 |
| 1993 | 1 | 0 |
| 1994 | 2 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 2 | 0 |
| 1998 | 1 | 0 |
| 1999 | 6 | 0 |
| 2000 | 2 | 0 |
| 2001 | 3 | 0 |
| 2002 | 1 | 3 |
| 2003 | 2 | 9 |
| 2004 | 4 | 1 |
| 2005 | 2 | 2 |
| 2006 | 2 | 2 |
| 2007 | 2 | 6 |
| 2008 | 5 | 5 |
| 2009 | 4 | 4 |
| 2010 | 1 | 6 |
| 2011 | 3 | 1 |
| 2012 | 2 | 5 |
| 2013 | 1 | 4 |
| 2014 | 3 | 6 |
| 2015 | 9 | 6 |
| 2016 | 4 | 10 |
| 2017 | 9 | 10 |
| 2018 | 3 | 11 |
| 2019 | 13 | 12 |
| 2020 | 12 | 12 |
| 2021 | 13 | 18 |
| 2022 | 13 | 22 |
| 2023 | 18 | 20 |
| 2024 | 16 | 13 |
| 2025 | 20 | 12 |
| 2026 | 6 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- High temperature high pressure induced mineralization for sealing application29 Sep 2026US 12,747,647 B1Beijing Huamei, Inc.
- Radial sealing surface system and method2 Jun 2026US 12,644,353 B2Vetco Gray Inc.
- Expanding metal for plug and abandonment12 May 2026US 12,624,611 B2Halliburton Energy Services.Inc.
- Bi-directional wellhead annulus packoff with integral seal and hanger lockdown ring21 Apr 2026US 12,607,082 B2Baker Hughes Oilfield Operations LLC
- Expandable metal gas lift mandrel plug17 Feb 2026US 12,553,307 B2Halliburton Energy Services.Inc.
- Expanding metal for plug and abandonment20 Aug 2026US 2026/0243144 A1Halliburton Energy Services.Inc.
- Bi-directional seal with dual seal profile system and method14 May 2026US 2026/0132694 A1Baker Hughes Oilfield Operations LLC
- Downhole packer assembly12 Mar 2026US 2026/0071512 A1Welltec A/S
- Seal-bore arrangement for a wellbore tubing disconnection tool5 Mar 2026US 2026/0063015 A1Halliburton Energy Services.Inc.
- Radial sealing surface system and method30 Oct 2025US 2025/0334021 A1Vetco Gray Inc.
Most cited
By later US patents
- Expandable wellbore junction301US 6,135,208 AHalliburton Energy Services.Inc. · 2000
- 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
- Expandable wellbore junction201US 6,189,616 B1Halliburton Energy Services.Inc. · 2001
- Frac system without intervention194US 7,325,617 B2Baker Hughes Incorporated · 2008