E21B 44/04
In response to the torque of the drive
Official title: in response to the torque of the drive {; Measuring drilling torque (E21B44/06 takes precedence; measuring stresses in a well bore pipe E21B47/007)}
E21B44/04 (In response to the torque of the drive) appears on 295 US grants and 342 published applications in this corpus.
Search patents in E21B- Granted patents
- 295
- Published applications
- 342
- Assignees
- 114
- Inventors
- 590
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 3 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 2 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 2 | 0 |
| 1994 | 2 | 0 |
| 1995 | 4 | 0 |
| 1996 | 3 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 2 | 0 |
| 2000 | 0 | 0 |
| 2001 | 2 | 3 |
| 2002 | 2 | 2 |
| 2003 | 1 | 2 |
| 2004 | 1 | 4 |
| 2005 | 2 | 1 |
| 2006 | 2 | 1 |
| 2007 | 0 | 2 |
| 2008 | 0 | 2 |
| 2009 | 3 | 7 |
| 2010 | 3 | 2 |
| 2011 | 3 | 1 |
| 2012 | 4 | 10 |
| 2013 | 3 | 5 |
| 2014 | 5 | 10 |
| 2015 | 9 | 11 |
| 2016 | 9 | 35 |
| 2017 | 10 | 17 |
| 2018 | 12 | 26 |
| 2019 | 20 | 41 |
| 2020 | 41 | 33 |
| 2021 | 30 | 40 |
| 2022 | 32 | 20 |
| 2023 | 31 | 22 |
| 2024 | 18 | 18 |
| 2025 | 17 | 17 |
| 2026 | 13 | 10 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Calculating pull for a stuck drill string15 Sep 2026US 12,735,953 B2Landmark Graphics Corporation
- Systems and methods for torque and drag analysis of downhole systems15 Sep 2026US 12,735,975 B2Schlumberger Technology Corporation
- Systems and methods for torque unwind18 Aug 2026US 12,709,974 B2Helmerich & Payne, Inc.
- Systems and methods for regulating weight on bit (WOB)11 Aug 2026US 12,704,057 B2Helmerich & Payne Technologies, LLC
- Real-time wear detection of a drill bit downhole in a wellbore14 Jul 2026US 12,680,396 B2Halliburton Energy Services.Inc.
- Horizontal directional drilling system with drill string breakout monitoring10 Sep 2026US 2026/0266146 A1Vermeer Manufacturing Company
- Systems and methods for identifying friction forces in a wellbore27 Aug 2026US 2026/0251053 A1Schlumberger Technology Corporation
- Apparatus and methods for controlling drilling20 Aug 2026US 2026/0243160 A1Helmerich & Payne Technologies, LLC
- Computer-implemented method for detecting and diagnosing failures in the fluid properties in a drilling system and computer-readable storage media13 Aug 2026US 2026/0235003 A1Petroleo Brasileiro S.A. - Petrobras
- Drilling systems and methods with iterative drilling parameter testing18 Jun 2026US 2026/0168371 A1Helmerich & Payne Technologies, LLC
Most cited
By later US patents
- Bit torque limiting device92US 6,594,881 B2Baker Hughes Incorporated · 2003
- Continuous on-bottom directional drilling method and system77US 7,096,979 B2Noble Drilling Services Inc. · 2006
- Method of and apparatus for directional drilling58US 6,918,453 B2Noble Engineering & Development, Ltd. · 2005
- Method of and apparatus for directional drilling51US 6,802,378 B2Noble Engineering & Development, Ltd. · 2004
- Tong load cell assembly50US 5,245,877 AWeatherford U. S., Inc. · 1993