E21B 44/08
In response to the amplitude of the movement of the percussion tool
Official title: in response to the amplitude of the movement of the percussion tool, e.g. jump or recoil
E21B44/08 (In response to the amplitude of the movement of the percussion tool) appears on 34 US grants and 34 published applications in this corpus.
Search patents in E21B- Granted patents
- 34
- Published applications
- 34
- Assignees
- 22
- Inventors
- 93
- Latest grant
- 21 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
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| 1998 | 1 | 0 |
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| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 1 | 1 |
| 2006 | 0 | 1 |
| 2007 | 0 | 1 |
| 2008 | 1 | 0 |
| 2009 | 0 | 3 |
| 2010 | 2 | 1 |
| 2011 | 1 | 0 |
| 2012 | 0 | 0 |
| 2013 | 1 | 1 |
| 2014 | 1 | 0 |
| 2015 | 1 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 1 |
| 2018 | 0 | 4 |
| 2019 | 2 | 6 |
| 2020 | 4 | 2 |
| 2021 | 4 | 3 |
| 2022 | 3 | 5 |
| 2023 | 5 | 2 |
| 2024 | 2 | 0 |
| 2025 | 1 | 1 |
| 2026 | 3 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Identification and mitigation of whirl within a drilling system21 Jul 2026US 12,687,101 B1Schlumberger Technology Corporation
- Systems and methods for drilling using tool face values predicted with a multiple-input-single output (miso) model23 Jun 2026US 12,662,883 B2Helmerich & Payne Technologies, LLC
- Devices, systems, and methods for high frequency oscillation mitigation9 Jun 2026US 12,650,069 B2Schlumberger Technology Corporation
- Methods and systems for drilling4 Mar 2025US 12,241,359 B2Helmerich & Payne Technologies, LLC
- System and method to predict value and timing of drilling operational parameters31 Dec 2024US 12,180,822 B2Exebenus AS
- Devices, systems, and methods for high frequency oscillation mitigation24 Sep 2026US 2026/0286830 A1Schlumberger Technology Corporation
- Mitigating high frequency torsional oscillation in a drilling system4 Jun 2026US 2026/0153023 A1Schlumberger Technology Corporation
- Methods and systems for drilling22 May 2025US 2025/0163796 A1Helmerich & Payne Technologies, LLC
- Methods and systems for drilling5 Oct 2023US 2023/0313668 A1Helmerich & Payne Technologies, LLC
- Systems and methods for drilling with miso, tool face wagging, return to neutral, and spindle reaction time improvements15 Jun 2023US 2023/0184039 A1Helmerich & Payne Technologies, LLC
Most cited
By later US patents
- Method and equipment for controlling operation of rock drilling apparatus26US 6,938,702 B2Sandvik Inteleectual Property AB · 2005
- System and method for stick-slip correction19US 9,041,547 B2Baker Hughes Incorporated · 2015
- Damping device for a percussion rock drilling machine12US 4,871,035 AAtlas Copco Aktiebolag · 1989
- Controlling a bottom-hole assembly in a wellbore9US 10,190,402 B2Halliburton Energy Services.Inc. · 2019
- Method for controlling percussion device, software production, and percussion device9US 7,717,190 B2Sandvik Mining and Construction Oy · 2010