E21B 33/1277
Characterised by the construction or fixation of the sleeve
Official title: {characterised by the construction or fixation of the sleeve}
E21B33/1277 (Characterised by the construction or fixation of the sleeve) appears on 295 US grants and 244 published applications in this corpus.
Search patents in E21B- Granted patents
- 295
- Published applications
- 244
- Assignees
- 78
- Inventors
- 403
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 2 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 2 | 0 |
| 1981 | 2 | 0 |
| 1982 | 4 | 0 |
| 1983 | 3 | 0 |
| 1984 | 2 | 0 |
| 1985 | 3 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 2 | 0 |
| 1989 | 3 | 0 |
| 1990 | 9 | 0 |
| 1991 | 3 | 0 |
| 1992 | 3 | 0 |
| 1993 | 8 | 0 |
| 1994 | 11 | 0 |
| 1995 | 8 | 0 |
| 1996 | 4 | 0 |
| 1997 | 3 | 0 |
| 1998 | 5 | 0 |
| 1999 | 1 | 0 |
| 2000 | 2 | 0 |
| 2001 | 5 | 2 |
| 2002 | 5 | 3 |
| 2003 | 6 | 2 |
| 2004 | 1 | 3 |
| 2005 | 2 | 6 |
| 2006 | 1 | 5 |
| 2007 | 1 | 12 |
| 2008 | 6 | 6 |
| 2009 | 8 | 4 |
| 2010 | 8 | 18 |
| 2011 | 2 | 9 |
| 2012 | 7 | 8 |
| 2013 | 8 | 12 |
| 2014 | 8 | 19 |
| 2015 | 7 | 14 |
| 2016 | 13 | 17 |
| 2017 | 13 | 9 |
| 2018 | 9 | 13 |
| 2019 | 14 | 15 |
| 2020 | 27 | 16 |
| 2021 | 17 | 13 |
| 2022 | 11 | 10 |
| 2023 | 11 | 8 |
| 2024 | 6 | 9 |
| 2025 | 9 | 6 |
| 2026 | 6 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Protective layer over swellable compound25 Aug 2026US 12,716,316 B2Halliburton Energy Services.Inc.
- Inflatable bore hole plug14 Jul 2026US 12,680,406 B2Mti Group Pty Ltd
- Downhole packer assembly having an auto-retraction mechanism14 Jul 2026US 12,680,414 B1Schlumberger Technology Corporation
- Expanding metal for plug and abandonment12 May 2026US 12,624,611 B2Halliburton Energy Services.Inc.
- Inflatable down hole bag12 May 2026US 12,624,612 B2Mti Group Pty Ltd
- Inflatable down hole bag24 Sep 2026US 2026/0286806 A1Mti Group Pty Ltd
- Expanding metal for plug and abandonment20 Aug 2026US 2026/0243144 A1Halliburton Energy Services.Inc.
- Well tool device preventing backlash of ratchet16 Jul 2026US 2026/0201762 A1Interwell Norway AS
- Downhle packer assembly having an auto-retraction mechanism16 Jul 2026US 2026/0201772 A1Schlumberger Technology Corporation
- Cable retention system and method of manufacture for inflatable packer2 Jul 2026US 2026/0185418 A1Summit Casing Services, LLC
Most cited
By later US patents
- Borehole packer163US 5,195,583 ASolinst Canada Limited · 1993
- Inflatable tubular sleeve for tubing or obturating a well or pipe150US 6,044,906 ADrillflex · 2000
- System and method to seal using a swellable material131US 7,665,537 B2Schlumbeger Technology Corporation · 2010
- Single fracture method and apparatus for simultaneous measurement of in-situ earthen stress state and material properties124US 5,576,485 A1996
- Expandable borehole packer123US 6,581,682 B1Solinst Canada Limited · 2003