E21B 44/06
In response to the flow or pressure of the motive fluid of
Official title: in response to the flow or pressure of the motive fluid of the drive
E21B44/06 (In response to the flow or pressure of the motive fluid of) appears on 189 US grants and 177 published applications in this corpus.
Search patents in E21B- Granted patents
- 189
- Published applications
- 177
- Assignees
- 106
- Inventors
- 459
- Latest grant
- 1 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 2 | 0 |
| 1978 | 2 | 0 |
| 1979 | 2 | 0 |
| 1980 | 0 | 0 |
| 1981 | 3 | 0 |
| 1982 | 2 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 4 | 0 |
| 1992 | 4 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 3 | 0 |
| 1996 | 2 | 0 |
| 1997 | 2 | 0 |
| 1998 | 3 | 0 |
| 1999 | 2 | 0 |
| 2000 | 4 | 0 |
| 2001 | 6 | 1 |
| 2002 | 1 | 1 |
| 2003 | 3 | 1 |
| 2004 | 2 | 2 |
| 2005 | 1 | 1 |
| 2006 | 2 | 1 |
| 2007 | 0 | 1 |
| 2008 | 0 | 0 |
| 2009 | 0 | 4 |
| 2010 | 2 | 2 |
| 2011 | 2 | 1 |
| 2012 | 3 | 3 |
| 2013 | 2 | 7 |
| 2014 | 2 | 6 |
| 2015 | 2 | 3 |
| 2016 | 4 | 8 |
| 2017 | 6 | 14 |
| 2018 | 4 | 6 |
| 2019 | 9 | 11 |
| 2020 | 10 | 22 |
| 2021 | 18 | 18 |
| 2022 | 16 | 15 |
| 2023 | 21 | 16 |
| 2024 | 11 | 19 |
| 2025 | 14 | 9 |
| 2026 | 8 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Methods, systems, and computer-readable media for performing automated drilling of a wellbore1 Sep 2026US 12,723,501 B2Pason Systems Corp.
- Apparatus and methods for electric power management28 Jul 2026US 12,692,758 B2Schlumberger Technology Corporation
- Apparatus and methods for controlling drilling26 May 2026US 12,637,939 B2Helmerich & Payne Technologies, LLC
- Devices, systems, and methods for mitigating downhole motor dysfunction14 Apr 2026US 12,601,249 B2Schlumberger Technology Corporation
- Method and system for machine learning and predictive analytics of fracture driven interactions24 Mar 2026US 12,585,942 B2Chevron U.S.A.Inc.
- Apparatus and methods for controlling drilling20 Aug 2026US 2026/0243160 A1Helmerich & Payne Technologies, LLC
- Abnormality detection system and abnormality detection method13 Aug 2026US 2026/0235023 A1Japan Agency for Marine-Earth Science and Technology
- System and Method for Mud Motor Stall Detection and Recovery4 Jun 2026US 2026/0153024 A1Patterson-UTI Drilling Company LLC
- Methods, systems, and media for controlling a toolface of a downhole tool16 Apr 2026US 2026/0103974 A1Pason Systems Corp.
- Automatic coiled tubing injector chain management system12 Mar 2026US 2026/0071507 A1Premier Coil Solutions, Inc.
Most cited
By later US patents
- Hydraulic drill unit75US 4,157,231 AThe United States of America as represented by the Secretary of the Air Force · 1979
- Apparatus and method for controlling an underground boring machine56US 5,746,278 AVermeer Manufacturing Company · 1998
- Drilling optimization searching and control apparatus55US 4,165,789 AUnited States Steel Corporation · 1979
- Methods and systems for drilling40US 8,939,233 B2Shell Oil Company · 2015
- Controls for hydraulic percussion drill28US 4,246,973 ACooper Industries, Inc. · 1981