E21B 27/04
Where the collecting or depositing means include helical conveying means
Official title: where the collecting or depositing means include helical conveying means
E21B27/04 (Where the collecting or depositing means include helical conveying means) appears on 49 US grants and 38 published applications in this corpus.
Search patents in E21B- Granted patents
- 49
- Published applications
- 38
- Assignees
- 26
- Inventors
- 75
- Latest grant
- 20 Jan 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 2 | 0 |
| 1992 | 0 | 0 |
| 1993 | 2 | 0 |
| 1994 | 2 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 2 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 1 |
| 2004 | 2 | 0 |
| 2005 | 1 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 2 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 1 | 0 |
| 2012 | 0 | 2 |
| 2013 | 1 | 1 |
| 2014 | 2 | 3 |
| 2015 | 3 | 3 |
| 2016 | 4 | 1 |
| 2017 | 2 | 3 |
| 2018 | 0 | 5 |
| 2019 | 4 | 6 |
| 2020 | 5 | 2 |
| 2021 | 2 | 0 |
| 2022 | 1 | 4 |
| 2023 | 3 | 1 |
| 2024 | 0 | 1 |
| 2025 | 3 | 2 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Systems and methods for separating and storing downhole debris20 Jan 2026US 12,529,287 B1Halliburton Energy Services.Inc.
- Debris collection and removal from a wellbore19 Aug 2025US 12,392,209 B1Schlumberger Technology Corporation
- Rotating check valve for improved downhole operations1 Jul 2025US 12,345,111 B1Schlumberger Technology Corporation
- Junk crushing device, assembly, and method thereof4 Feb 2025US 12,215,569 B2Saudi Arabian Oil Company
- Wireline clean-out tool having improved capacity31 Oct 2023US 11,802,463 B2Altus Intervention (Technologies) AS
- Systems and Methods for Separating and Storing Downhole Debris29 Jan 2026US 2026/0028898 A1Halliburton Energy Services.Inc.
- Collection unit for cuttings11 Dec 2025US 2025/0376904 A1Coring Incorporated
- Improved debris collection and removal from a wellbore21 Aug 2025US 2025/0263995 A1Schlumberger Technology Corporation
- Drilling tool and method for producing a bore in the ground31 Oct 2024US 2024/0360726 A1BAUER Maschinen GmbH
- Junk crushing device, assembly, and method thereof14 Dec 2023US 2023/0399922 A1Saudi Arabian Oil Company
Most cited
By later US patents
- Flexpower deep well drill62US 3,934,660 A1976
- Plugging device deployment in subterranean wells33US 9,745,820 B2Thru Tubing Solutions, Inc. · 2017
- Powered wellbore bailer29US 9,334,704 B2Halliburton Energy Services.Inc. · 2016
- Drill hole plugging method utilizing sodium bentonite nodules28US 5,810,085 A1998
- Drill hole plugging method utilizing layered sodium bentonite and liquid retaining particles27US 5,657,822 A1997