E21B 7/005
With helical conveying means
Official title: {with helical conveying means (E21B7/201 takes precedence; augers E21B10/44; drilling rods or pipes with helical structure E21B17/22)}
E21B7/005 (With helical conveying means) appears on 148 US grants and 81 published applications in this corpus.
Search patents in E21B- Granted patents
- 148
- Published applications
- 81
- Assignees
- 72
- Inventors
- 228
- Latest grant
- 14 Oct 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 4 | 0 |
| 1980 | 2 | 0 |
| 1981 | 1 | 0 |
| 1982 | 4 | 0 |
| 1983 | 1 | 0 |
| 1984 | 2 | 0 |
| 1985 | 4 | 0 |
| 1986 | 0 | 0 |
| 1987 | 4 | 0 |
| 1988 | 1 | 0 |
| 1989 | 2 | 0 |
| 1990 | 2 | 0 |
| 1991 | 5 | 0 |
| 1992 | 0 | 0 |
| 1993 | 2 | 0 |
| 1994 | 0 | 0 |
| 1995 | 2 | 0 |
| 1996 | 1 | 0 |
| 1997 | 2 | 0 |
| 1998 | 3 | 0 |
| 1999 | 4 | 0 |
| 2000 | 4 | 0 |
| 2001 | 2 | 0 |
| 2002 | 2 | 0 |
| 2003 | 0 | 0 |
| 2004 | 1 | 1 |
| 2005 | 2 | 3 |
| 2006 | 3 | 1 |
| 2007 | 0 | 0 |
| 2008 | 1 | 5 |
| 2009 | 3 | 4 |
| 2010 | 7 | 1 |
| 2011 | 0 | 3 |
| 2012 | 3 | 5 |
| 2013 | 3 | 5 |
| 2014 | 3 | 5 |
| 2015 | 6 | 3 |
| 2016 | 6 | 7 |
| 2017 | 7 | 2 |
| 2018 | 2 | 6 |
| 2019 | 8 | 5 |
| 2020 | 5 | 3 |
| 2021 | 11 | 5 |
| 2022 | 2 | 7 |
| 2023 | 3 | 0 |
| 2024 | 7 | 5 |
| 2025 | 6 | 3 |
| 2026 | 0 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Drilling tool and method for creating a bore in the ground14 Oct 2025US 12,442,150 B2BAUER Spezialtiefbau GmbH
- Debris collection and removal from a wellbore19 Aug 2025US 12,392,209 B1Schlumberger Technology Corporation
- Multi-tool boring systems and methods of operating such systems15 Jul 2025US 12,359,512 B2Phoenix Boring, Inc.
- Rotating check valve for improved downhole operations1 Jul 2025US 12,345,111 B1Schlumberger Technology Corporation
- In-situ detection robot and detection method for geological information without disturbance of in-situ stress27 May 2025US 12,312,950 B2Chang An University
- Downhole casing auger for removal of paraffin from oil and gas wells12 Mar 2026US 2026/0071501 A1Missaukee Oil and Gas Company LLC
- Underground boring systems and apparatus1 Jan 2026US 2026/0002415 A1
- Collection unit for cuttings11 Dec 2025US 2025/0376904 A1Coring Incorporated
- Multi-Tool Boring Systems and Methods of Operating Such Systems9 Oct 2025US 2025/0314132 A1Phoenix Boring, Inc.
- Improved debris collection and removal from a wellbore21 Aug 2025US 2025/0263995 A1Schlumberger Technology Corporation
Most cited
By later US patents
- Wafer carrier74US 5,788,082 AFluoroware, Inc. · 1998
- Flexpower deep well drill62US 3,934,660 A1976
- Vibratory drilling apparatus59US 8,336,643 B22012
- Methods for forming a short aggregate pier and a product formed from said methods50US 6,354,766 B1Geotechnical Reinforcement Company, Inc. · 2002
- Mobile soil sampling device44US 5,394,949 A1995