E21B 43/126
Adaptations of down-hole pump systems powered by drives outside the borehole
Official title: {Adaptations of down-hole pump systems powered by drives outside the borehole, e.g. by a rotary or oscillating drive (powered by fluid E21B43/129)}
E21B43/126 (Adaptations of down-hole pump systems powered by drives outside the borehole) appears on 912 US grants and 937 published applications in this corpus.
Search patents in E21B- Granted patents
- 912
- Published applications
- 937
- Assignees
- 466
- Inventors
- 1,456
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 3 | 0 |
| 1978 | 2 | 0 |
| 1979 | 3 | 0 |
| 1980 | 4 | 0 |
| 1981 | 2 | 0 |
| 1982 | 2 | 0 |
| 1983 | 7 | 0 |
| 1984 | 1 | 0 |
| 1985 | 2 | 0 |
| 1986 | 4 | 0 |
| 1987 | 6 | 0 |
| 1988 | 6 | 0 |
| 1989 | 3 | 0 |
| 1990 | 3 | 0 |
| 1991 | 5 | 0 |
| 1992 | 3 | 0 |
| 1993 | 6 | 0 |
| 1994 | 11 | 0 |
| 1995 | 12 | 0 |
| 1996 | 13 | 0 |
| 1997 | 8 | 0 |
| 1998 | 12 | 0 |
| 1999 | 6 | 0 |
| 2000 | 19 | 0 |
| 2001 | 10 | 3 |
| 2002 | 11 | 8 |
| 2003 | 12 | 6 |
| 2004 | 5 | 11 |
| 2005 | 8 | 19 |
| 2006 | 7 | 13 |
| 2007 | 5 | 13 |
| 2008 | 10 | 20 |
| 2009 | 15 | 24 |
| 2010 | 14 | 23 |
| 2011 | 20 | 28 |
| 2012 | 20 | 31 |
| 2013 | 16 | 37 |
| 2014 | 22 | 37 |
| 2015 | 34 | 56 |
| 2016 | 29 | 57 |
| 2017 | 36 | 74 |
| 2018 | 70 | 69 |
| 2019 | 61 | 66 |
| 2020 | 64 | 79 |
| 2021 | 81 | 67 |
| 2022 | 66 | 61 |
| 2023 | 51 | 37 |
| 2024 | 36 | 38 |
| 2025 | 38 | 34 |
| 2026 | 24 | 26 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Shaft lubrication system6 Oct 2026US 12,753,877 B2K&L Technologies, Inc.
- Multi-phase fluid pump system with driving fluid and pump fluid cylinders and buffer chambers22 Sep 2026US 12,742,449 B2I-Jack Technologies Incorporated
- Penetrator system for electrical submersible pumps8 Sep 2026US 12,729,596 B2Sonic Connectors Ltd.
- Progressive cavity pump system having reverse mode8 Sep 2026US 12,729,682 B2Schlumberger Technology Corporation
- Sinker bar with centralizer18 Aug 2026US 12,709,949 B2360 Research Labs, LLC
- Managing regenerative energy of reciprocating pumping unit8 Oct 2026US 2026/0309009 A1Weatherford Technology Holdings, LLC
- Self-correcting flow in subsurface wells8 Oct 2026US 2026/0309010 A1Fervo Energy Company
- Subterranean solids fallback protection device1 Oct 2026US 2026/0298065 A1Fallback LLC
- Sand collector for sucker rod pump24 Sep 2026US 2026/0286825 A1Daniel J. Snyder
- Artificial lift system with annular velocity string24 Sep 2026US 2026/0286826 A1
Most cited
By later US patents
- Control unit for oil wells145US 4,102,394 AEnergy 76, Inc. · 1978
- Method and apparatus for artificially intelligent model-based control of dynamic processes using probabilistic agents136US 9,645,575 B2Adept Ai Systems Inc. · 2017
- Control system and method for AC motor driven cyclic load118US 4,971,522 A1990
- Rod seal cartridge for progressing cavity artificial lift pumps106US 5,823,541 AKalsi Engineering, Inc. · 1998
- Method and apparatus for testing noneruptive wells including a cavity pump and a drill stem test string98US 5,540,281 ASchlumberger Technology Corporation · 1996