E21B 23/001
Self-propelling systems or apparatus
Official title: {Self-propelling systems or apparatus, e.g. for moving tools within the horizontal portion of a borehole}
E21B23/001 (Self-propelling systems or apparatus) appears on 432 US grants and 468 published applications in this corpus.
Search patents in E21B- Granted patents
- 432
- Published applications
- 468
- Assignees
- 144
- Inventors
- 697
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 3 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 3 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 2 | 0 |
| 1999 | 3 | 0 |
| 2000 | 5 | 0 |
| 2001 | 13 | 2 |
| 2002 | 17 | 13 |
| 2003 | 9 | 15 |
| 2004 | 9 | 20 |
| 2005 | 16 | 16 |
| 2006 | 18 | 11 |
| 2007 | 18 | 11 |
| 2008 | 9 | 19 |
| 2009 | 10 | 7 |
| 2010 | 6 | 22 |
| 2011 | 8 | 8 |
| 2012 | 8 | 15 |
| 2013 | 5 | 11 |
| 2014 | 9 | 22 |
| 2015 | 17 | 23 |
| 2016 | 15 | 22 |
| 2017 | 17 | 14 |
| 2018 | 19 | 23 |
| 2019 | 21 | 29 |
| 2020 | 22 | 34 |
| 2021 | 32 | 21 |
| 2022 | 18 | 20 |
| 2023 | 26 | 25 |
| 2024 | 25 | 34 |
| 2025 | 28 | 22 |
| 2026 | 13 | 9 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Composite umbilical for pulse power boring system25 Aug 2026US 12,716,297 B2Halliburton Energy Services.Inc.
- Systems and methods for imaging a proppant in a hydraulically-fractured oil reservoir4 Aug 2026US 12,698,707 B2Carbo Ceramics Inc.
- Well tool with an angle orienting feature12 May 2026US 12,624,605 B2Well Conveyor AS
- Long-term monitoring apparatus and method for surrounding rock fracture evolution process triggered by multiple-source dynamic disturbances12 May 2026US 12,624,630 B2Northeastern University
- Pipe navigation apparatus with bypass fluid channel12 May 2026US 12,624,788 B2GE Infrastructure Technology LLC
- High temperature geothermal well tractor20 Aug 2026US 2026/0243139 A1Halliburton Energy Services.Inc.
- Individual or paired arm control in a wellbore tractor30 Jul 2026US 2026/0218579 A1Gowell Technology Norway AS
- Composite umbilical for pulse power boring system16 Jul 2026US 2026/0201753 A1Halliburton Energy Services.Inc.
- Additive manufacture system9 Jul 2026US 2026/0192520 A1Kongsberg Ferrotech AS
- Apparatus and method for moving tools in a nonflow environment9 Jul 2026US 2026/0193951 A1Tenax Energy Systems, LLC
Most cited
By later US patents
- Downhole tools using artificial intelligence based control225US 5,947,213 AIntelligent Inspection Corporation · 1999
- Well system221US 6,296,066 B1Halliburton Energy Services.Inc. · 2001
- Modular observation crawler and sensing instrument and method for operating same200US 6,450,104 B1North Carolina State University · 2002
- Autonomous downhole oilfield tool191US 6,378,627 B1Intelligent Inspection Corporation · 2002
- Wellbore tractor and method of moving an item through a wellbore185US 5,794,703 ACtes, L.C. · 1998