E21B 17/1057
Centralising devices with rollers or with a relatively rotating sleeve
Official title: {Centralising devices with rollers or with a relatively rotating sleeve (E21B17/1014 takes precedence)}
E21B17/1057 (Centralising devices with rollers or with a relatively rotating sleeve) appears on 386 US grants and 284 published applications in this corpus.
Search patents in E21B- Granted patents
- 386
- Published applications
- 284
- Assignees
- 196
- Inventors
- 633
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 3 | 0 |
| 1978 | 7 | 0 |
| 1979 | 0 | 0 |
| 1980 | 5 | 0 |
| 1981 | 2 | 0 |
| 1982 | 3 | 0 |
| 1983 | 4 | 0 |
| 1984 | 4 | 0 |
| 1985 | 2 | 0 |
| 1986 | 6 | 0 |
| 1987 | 4 | 0 |
| 1988 | 4 | 0 |
| 1989 | 2 | 0 |
| 1990 | 9 | 0 |
| 1991 | 6 | 0 |
| 1992 | 4 | 0 |
| 1993 | 5 | 0 |
| 1994 | 5 | 0 |
| 1995 | 4 | 0 |
| 1996 | 2 | 0 |
| 1997 | 8 | 0 |
| 1998 | 14 | 0 |
| 1999 | 6 | 0 |
| 2000 | 8 | 0 |
| 2001 | 12 | 2 |
| 2002 | 9 | 13 |
| 2003 | 8 | 12 |
| 2004 | 8 | 6 |
| 2005 | 2 | 8 |
| 2006 | 5 | 4 |
| 2007 | 9 | 3 |
| 2008 | 7 | 7 |
| 2009 | 2 | 9 |
| 2010 | 6 | 7 |
| 2011 | 4 | 5 |
| 2012 | 5 | 12 |
| 2013 | 4 | 15 |
| 2014 | 9 | 6 |
| 2015 | 8 | 24 |
| 2016 | 11 | 14 |
| 2017 | 16 | 15 |
| 2018 | 14 | 12 |
| 2019 | 11 | 17 |
| 2020 | 21 | 24 |
| 2021 | 29 | 20 |
| 2022 | 21 | 17 |
| 2023 | 9 | 11 |
| 2024 | 17 | 15 |
| 2025 | 10 | 6 |
| 2026 | 10 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Tool string transportation device6 Oct 2026US 12,753,667 B2Petromac IP Limited
- Modular anti-rotation drilling systems and methods actuated by fluid pressure29 Sep 2026US 12,747,654 B1National Technology & Engineering Solutions of Sandia, LLC
- Tether roller apparatus18 Aug 2026US 12,709,948 B2Eddyfi Canada Inc.
- Downhole torque reducer21 Jul 2026US 12,687,071 B2Rotojar Innovations Limited
- Wellbore cleaning tools30 Jun 2026US 12,669,028 B2Wellbore Integrity Solutions LLC
- Bearing assemblies, apparatuses, devices, systems, and methods includingbearings30 Oct 2025US 2025/0334133 A1ChampionX LLC
- Sensor transportation apparatus for a wireline logging tool string21 Aug 2025US 2025/0263994 A1Petromac IP Limited
- Tether roller apparatus26 Jun 2025US 2025/0207467 A1Eddyfi Canada Inc.
- Wellbore cleaning tools1 May 2025US 2025/0137355 A1Wellbore Integrity Solutions LLC
- A tool string transportation device23 Jan 2025US 2025/0027372 A1Petromac IP Limited
Most cited
By later US patents
- Self-driving and self-locking device for traversing channels and elongated structures140US 4,085,808 A1978
- Integrated directional under-reamer and stabilizer136US 6,059,051 ABaker Hughes Incorporated · 2000
- Stabilizer for use in a drill string120US 6,622,803 B2Rotary Drilling Technology, LLC · 2003
- Drill pipe protector assembly97US 6,378,633 B1Western Well Tool, Inc. · 2002
- Drill pipe/casing protector assembly96US 5,803,193 AWestern Well Tool, Inc. · 1998