E21B 33/1293
With means for anchoring against downward and upward movement
Official title: {with means for anchoring against downward and upward movement (E21B33/1291, E21B33/1295 take precedence)}
E21B33/1293 (With means for anchoring against downward and upward movement) appears on 419 US grants and 389 published applications in this corpus.
Search patents in E21B- Granted patents
- 419
- Published applications
- 389
- Assignees
- 144
- Inventors
- 652
- Latest grant
- 1 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 4 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 6 | 0 |
| 1985 | 5 | 0 |
| 1986 | 6 | 0 |
| 1987 | 4 | 0 |
| 1988 | 2 | 0 |
| 1989 | 0 | 0 |
| 1990 | 7 | 0 |
| 1991 | 2 | 0 |
| 1992 | 2 | 0 |
| 1993 | 4 | 0 |
| 1994 | 3 | 0 |
| 1995 | 3 | 0 |
| 1996 | 9 | 0 |
| 1997 | 8 | 0 |
| 1998 | 5 | 0 |
| 1999 | 5 | 0 |
| 2000 | 4 | 0 |
| 2001 | 7 | 0 |
| 2002 | 3 | 2 |
| 2003 | 2 | 5 |
| 2004 | 3 | 5 |
| 2005 | 1 | 8 |
| 2006 | 7 | 2 |
| 2007 | 3 | 2 |
| 2008 | 2 | 2 |
| 2009 | 3 | 1 |
| 2010 | 2 | 2 |
| 2011 | 1 | 5 |
| 2012 | 1 | 10 |
| 2013 | 2 | 11 |
| 2014 | 6 | 9 |
| 2015 | 14 | 27 |
| 2016 | 14 | 23 |
| 2017 | 15 | 22 |
| 2018 | 21 | 55 |
| 2019 | 42 | 36 |
| 2020 | 38 | 53 |
| 2021 | 45 | 35 |
| 2022 | 32 | 24 |
| 2023 | 23 | 17 |
| 2024 | 20 | 15 |
| 2025 | 19 | 9 |
| 2026 | 10 | 9 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Downhole tool having a fluid reservoir and methods thereof1 Sep 2026US 12,723,486 B2Brummert Applied Sciences, LLC
- Retrievable packer and bridge plug apparatus and method for using same25 Aug 2026US 12,716,319 B1Oilfield Service Professionals, LLC
- Downhole setting system for use in a wellbore7 Jul 2026US 12,674,371 B2The WellBoss Company, LLC
- Dormant packer fracturing completion system16 Jun 2026US 12,655,713 B2Schlumberger Technology Corporation
- Highly-sealed retrievable anchoring packer2 Jun 2026US 12,644,356 B2China University of Petroleum-Beijing
- Downhole tool and setting system for use in a wellbore3 Sep 2026US 2026/0258713 A1The WellBoss Company, LLC
- Downhole patch13 Aug 2026US 2026/0235011 A1Welltec A/S
- Full-bore cementing and fracturing sliding sleeve system11 Jun 2026US 2026/0160150 A1Sichuan Pangolin Petroleum Technology Co., Ltd.
- Hybrid dissolvable plugs for sealing downhole casing strings14 May 2026US 2026/0132696 A1G&H Diversified Manufacturing LP
- Downhole tool and setting system for use in a wellbore7 May 2026US 2026/0125964 A1The WellBoss Company, LLC
Most cited
By later US patents
- Chip resistant buttons for downhole tools having slip elements243US 5,984,007 AHalliburton Energy Services.Inc. · 1999
- Downhole tool apparatus with non-metallic components and methods of drilling thereof241US 5,224,540 AHalliburton Company · 1993
- Metal seal well packer240US 5,685,369 AABB Vetco Gray Inc. · 1997
- Downhole tool apparatus with non-metallic components and methods of drilling thereof218US 5,271,468 AHalliburton Company · 1993
- Drillable bridge plug210US 4,784,226 AArrow Oil Tools, Inc. · 1988