E21B 10/322
Cutter shifted by fluid pressure
Official title: {cutter shifted by fluid pressure (E21B10/345 takes precedence)}
E21B10/322 (Cutter shifted by fluid pressure) appears on 316 US grants and 282 published applications in this corpus.
Search patents in E21B- Granted patents
- 316
- Published applications
- 282
- Assignees
- 85
- Inventors
- 444
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 2 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 5 | 0 |
| 1984 | 3 | 0 |
| 1985 | 3 | 0 |
| 1986 | 2 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 4 | 0 |
| 1990 | 2 | 0 |
| 1991 | 7 | 0 |
| 1992 | 5 | 0 |
| 1993 | 8 | 0 |
| 1994 | 4 | 0 |
| 1995 | 4 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 4 | 0 |
| 1999 | 1 | 0 |
| 2000 | 5 | 0 |
| 2001 | 0 | 0 |
| 2002 | 2 | 4 |
| 2003 | 5 | 6 |
| 2004 | 4 | 14 |
| 2005 | 9 | 6 |
| 2006 | 6 | 5 |
| 2007 | 4 | 11 |
| 2008 | 9 | 13 |
| 2009 | 8 | 8 |
| 2010 | 14 | 23 |
| 2011 | 13 | 17 |
| 2012 | 16 | 21 |
| 2013 | 14 | 17 |
| 2014 | 16 | 23 |
| 2015 | 18 | 18 |
| 2016 | 17 | 14 |
| 2017 | 14 | 17 |
| 2018 | 13 | 9 |
| 2019 | 15 | 13 |
| 2020 | 14 | 7 |
| 2021 | 9 | 9 |
| 2022 | 11 | 6 |
| 2023 | 9 | 8 |
| 2024 | 5 | 7 |
| 2025 | 8 | 2 |
| 2026 | 1 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Devices, systems, and methods for identifying a radial position of an expandable tool29 Sep 2026US 12,747,663 B1Schlumberger Technology Corporation
- Downhole tool, bottomhole assembly, and drilling method using same2 Dec 2025US 12,486,735 B2Saudi Arabian Oil Company
- Reaming a wellbore21 Oct 2025US 12,448,851 B2Saudi Arabian Oil Company
- Post hole belling auger14 Oct 2025US 12,442,151 B2Jess Tools, LLC
- Downhole tools having radially extendable elements7 Oct 2025US 12,435,575 B2Schlumberger Technology Corporation
- Post Hole Belling Auger5 Feb 2026US 2026/0035873 A1Jess Tools, LLC
- Downhole tools having radially extendable elements5 Feb 2026US 2026/0036001 A1Schlumberger Technology Corporation
- Wellbore drill bit with stationary and expandable blades15 Jan 2026US 2026/0015911 A1Saudi Arabian Oil Company
- Drilling apparatus with wings15 Jan 2026US 2026/0015912 A1
- Selectable hole trimmer and methods thereof16 Oct 2025US 2025/0320783 A1Black Diamond Oilfield Rentals LLC
Most cited
By later US patents
- Drilling with casing and retrievable drill bit314US 5,271,472 AAtlantic Richfield Company · 1993
- Drilling with casing and retrievable drill bit289US 5,197,553 AAtlantic Richfield Company · 1993
- Expandable underreamer/stabilizer271US 6,732,817 B2Smith International, Inc. · 2004
- Cutter blades for rotary tubing tools210US 5,242,017 A1993
- Combination mill and drill bit197US 6,131,675 ABaker Hughes Incorporated · 2000