E21B 44/10
Arrangements for automatic stopping when the tool is lifted from the working
Official title: Arrangements for automatic stopping when the tool is lifted from the working face
E21B44/10 (Arrangements for automatic stopping when the tool is lifted from the working) appears on 21 US grants and 25 published applications in this corpus.
Search patents in E21B- Granted patents
- 21
- Published applications
- 25
- Assignees
- 8
- Inventors
- 31
- Latest grant
- 4 Mar 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 1 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 1 |
| 2016 | 0 | 0 |
| 2017 | 0 | 1 |
| 2018 | 0 | 3 |
| 2019 | 4 | 4 |
| 2020 | 3 | 4 |
| 2021 | 4 | 4 |
| 2022 | 3 | 3 |
| 2023 | 3 | 2 |
| 2024 | 2 | 1 |
| 2025 | 1 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Methods and systems for drilling4 Mar 2025US 12,241,359 B2Helmerich & Payne Technologies, LLC
- Virtual brake system15 Oct 2024US 12,116,855 B2The Charles Machine Works, Inc.
- Automating well construction operations based on detected abnormal events6 Aug 2024US 12,055,027 B2Schlumberger Technology Corporation
- Robotic apparatus for performing drill floor operations18 Jul 2023US 11,702,894 B2Noble Drilling A/S
- Methods and systems for drilling18 Jul 2023US 11,702,923 B2Helmerich & Payne Technologies, LLC
- Methods and systems for drilling22 May 2025US 2025/0163796 A1Helmerich & Payne Technologies, LLC
- Virtual brake system17 Oct 2024US 2024/0344397 A1The Charles Machine Works, Inc.
- Virtual brake system19 Oct 2023US 2023/0332487 A1The Charles Machine Works, Inc.
- Methods and systems for drilling5 Oct 2023US 2023/0313668 A1Helmerich & Payne Technologies, LLC
- Automatic wellbore activity schedule adjustment method and system23 Jun 2022US 2022/0198354 A1Schlumberger Technology Corporation
Most cited
By later US patents
- Local electrical room module for well construction apparatus10US 10,472,953 B2Schlumberger Technology Corporation · 2019
- Wireless emergency stop7US 10,487,641 B2Schlumberger Technology Corporation · 2019
- Virtual brake system3US 10,724,347 B2The Charles Machine Works, Inc. · 2020
- Adapter for drilling strings with controllable air passage3US 4,974,690 AS&T No 13 Pty. Ltd. · 1990
- Zone management system and equipment interlocks2US 10,890,060 B2Schlumberger Technology Corporation · 2021