E21B 23/0411
Specially adapted for anchoring tools or the like to the borehole wall
Official title: {specially adapted for anchoring tools or the like to the borehole wall or to well tube}
E21B23/0411 (Specially adapted for anchoring tools or the like to the borehole wall) appears on 387 US grants and 268 published applications in this corpus.
Search patents in E21B- Granted patents
- 387
- Published applications
- 268
- Assignees
- 139
- Inventors
- 554
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 2 | 0 |
| 1978 | 4 | 0 |
| 1979 | 3 | 0 |
| 1980 | 1 | 0 |
| 1981 | 10 | 0 |
| 1982 | 8 | 0 |
| 1983 | 3 | 0 |
| 1984 | 3 | 0 |
| 1985 | 4 | 0 |
| 1986 | 5 | 0 |
| 1987 | 7 | 0 |
| 1988 | 5 | 0 |
| 1989 | 5 | 0 |
| 1990 | 4 | 0 |
| 1991 | 4 | 0 |
| 1992 | 3 | 0 |
| 1993 | 5 | 0 |
| 1994 | 4 | 0 |
| 1995 | 14 | 0 |
| 1996 | 9 | 0 |
| 1997 | 3 | 0 |
| 1998 | 11 | 0 |
| 1999 | 8 | 0 |
| 2000 | 7 | 0 |
| 2001 | 7 | 4 |
| 2002 | 13 | 15 |
| 2003 | 12 | 11 |
| 2004 | 9 | 9 |
| 2005 | 7 | 15 |
| 2006 | 10 | 2 |
| 2007 | 8 | 6 |
| 2008 | 3 | 7 |
| 2009 | 6 | 5 |
| 2010 | 5 | 18 |
| 2011 | 9 | 8 |
| 2012 | 8 | 9 |
| 2013 | 5 | 7 |
| 2014 | 8 | 10 |
| 2015 | 11 | 9 |
| 2016 | 11 | 15 |
| 2017 | 9 | 8 |
| 2018 | 6 | 9 |
| 2019 | 8 | 6 |
| 2020 | 8 | 16 |
| 2021 | 17 | 11 |
| 2022 | 14 | 20 |
| 2023 | 14 | 21 |
| 2024 | 15 | 13 |
| 2025 | 21 | 9 |
| 2026 | 8 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Downhole tool system comprising hydraulically actuated shifting assembly and related methods22 Sep 2026US 12,742,368 B2Kobold Corporation
- Annular pressure activated downhole tool28 Jul 2026US 12,692,760 B2Baker Hughes Oilfield Operations LLC
- Annular pressure activated downhole tool21 Jul 2026US 12,687,080 B2Baker Hughes Oilfield Operations LLC
- Method and apparatus for setting downhole plugs and other objects in wellbores16 Jun 2026US 12,655,700 B2Grant Prideco, L.P.
- Apparatus and methods for operating downhole tools26 May 2026US 12,637,917 B2Wellbore Integrity Solutions LLC
- Downhole tool including a pressure intensifier1 Oct 2026US 2026/0298043 A1Halliburton Energy Services.Inc.
- Apparatus and methods for operating downhole tools10 Sep 2026US 2026/0266151 A1Wellbore Integrity Solutions LLC
- Hybrid dissolvable plugs for sealing downhole casing strings14 May 2026US 2026/0132696 A1G&H Diversified Manufacturing LP
- Apparatus and Methods for Operating Downhole Tools30 Apr 2026US 2026/0117612 A1Wellbore Integrity Solutions LLC
- Extensible transition joint for control line protection12 Mar 2026US 2026/0071502 A1Halliburton Energy Services.Inc.
Most cited
By later US patents
- Hydraulically actuated liner hanger arrangement and method215US 5,318,131 A1994
- Method & apparatus for actuating a downhole tool198US 5,558,153 ABaker Hughes Incorporated · 1996
- Downhole anchoring tools conveyed by non-rigid carriers190US 6,315,043 B1Schlumberger Technology Corporation · 2001
- Well tool for completing a well186US 5,535,824 ABestline Liner Systems · 1996
- Wellbore tractor and method of moving an item through a wellbore185US 5,794,703 ACtes, L.C. · 1998