E21B 41/0085
Adaptations of electric power generating means for use in boreholes
Official title: {Adaptations of electric power generating means for use in boreholes}
E21B41/0085 (Adaptations of electric power generating means for use in boreholes) appears on 976 US grants and 1,059 published applications in this corpus.
Search patents in E21B- Granted patents
- 976
- Published applications
- 1,059
- Assignees
- 292
- Inventors
- 1,650
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 2 | 0 |
| 1981 | 2 | 0 |
| 1982 | 1 | 0 |
| 1983 | 5 | 0 |
| 1984 | 0 | 0 |
| 1985 | 6 | 0 |
| 1986 | 2 | 0 |
| 1987 | 5 | 0 |
| 1988 | 3 | 0 |
| 1989 | 3 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 5 | 0 |
| 1993 | 5 | 0 |
| 1994 | 2 | 0 |
| 1995 | 1 | 0 |
| 1996 | 6 | 0 |
| 1997 | 5 | 0 |
| 1998 | 2 | 0 |
| 1999 | 7 | 0 |
| 2000 | 3 | 0 |
| 2001 | 9 | 4 |
| 2002 | 8 | 17 |
| 2003 | 10 | 16 |
| 2004 | 18 | 12 |
| 2005 | 7 | 18 |
| 2006 | 15 | 18 |
| 2007 | 13 | 12 |
| 2008 | 10 | 12 |
| 2009 | 11 | 25 |
| 2010 | 16 | 25 |
| 2011 | 14 | 19 |
| 2012 | 8 | 26 |
| 2013 | 18 | 32 |
| 2014 | 19 | 34 |
| 2015 | 32 | 67 |
| 2016 | 35 | 62 |
| 2017 | 44 | 44 |
| 2018 | 38 | 97 |
| 2019 | 72 | 92 |
| 2020 | 104 | 75 |
| 2021 | 63 | 68 |
| 2022 | 86 | 65 |
| 2023 | 80 | 76 |
| 2024 | 77 | 65 |
| 2025 | 69 | 55 |
| 2026 | 31 | 23 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Assembly for generating electricity in a production well of a hot fluid6 Oct 2026US 12,753,677 B2Affin AS
- Subsea pumping and booster system22 Sep 2026US 12,742,373 B2Baker Hughes Energy Technology UK Limited
- System and method for mobile drilling machine15 Sep 2026US 12,735,958 B2Caterpillar Inc.
- Downhole autonomous inflow control device8 Sep 2026US 12,729,601 B1Saudi Arabian Oil Company
- System and method for storage and withdrawal of electrical energy from a subterranean environment1 Sep 2026US 12,723,491 B2
- Pondless hydromechanical storage system24 Sep 2026US 2026/0286941 A1Sage Geosystems Inc.
- Downhole autonomous inflow control device10 Sep 2026US 2026/0266158 A1Saudi Arabian Oil Company
- Downhole wireless acoustic powering and communications23 Jul 2026US 2026/0210240 A1National Technology & Engineering Solutions of Sandia, LLC
- Systems and Methods for Data Acquisition From Outside a Well Casing23 Jul 2026US 2026/0210242 A1National Technology & Engineering Solutions of Sandia, LLC
- Composite umbilical for pulse power boring system16 Jul 2026US 2026/0201753 A1Halliburton Energy Services.Inc.
Most cited
By later US patents
- Mobile electric power generation for hydraulic fracturing of subsurface geological formations496US 9,534,473 B2Evolution Well Services, LLC · 2017
- Mobile, modular, electrically powered system for use in fracturing underground formations358US 9,103,193 B2Evolution Well Services, LLC · 2015
- Actively controlled rotary steerable system and method for drilling wells344US 6,092,610 ASchlumberger Technology Corporation · 2000
- Mobile, modular, electrically powered system for use in fracturing underground formations334US 9,366,114 B2Evolution Well Services, LLC · 2016
- Submersible power generators and method of operating thereof331US 9,651,032 B2General Electric Company · 2017