E21B 43/34
Arrangements for separating materials produced by the well
E21B43/34 (Arrangements for separating materials produced by the well) appears on 2,517 US grants and 2,252 published applications in this corpus.
Search patents in E21B- Granted patents
- 2,517
- Published applications
- 2,252
- Assignees
- 979
- Inventors
- 4,340
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 15 | 0 |
| 1977 | 20 | 0 |
| 1978 | 32 | 0 |
| 1979 | 16 | 0 |
| 1980 | 17 | 0 |
| 1981 | 21 | 0 |
| 1982 | 33 | 0 |
| 1983 | 41 | 0 |
| 1984 | 38 | 0 |
| 1985 | 34 | 0 |
| 1986 | 28 | 0 |
| 1987 | 34 | 0 |
| 1988 | 33 | 0 |
| 1989 | 21 | 0 |
| 1990 | 17 | 0 |
| 1991 | 23 | 0 |
| 1992 | 39 | 0 |
| 1993 | 20 | 0 |
| 1994 | 24 | 0 |
| 1995 | 27 | 0 |
| 1996 | 21 | 0 |
| 1997 | 16 | 0 |
| 1998 | 18 | 0 |
| 1999 | 26 | 0 |
| 2000 | 58 | 0 |
| 2001 | 54 | 3 |
| 2002 | 28 | 22 |
| 2003 | 24 | 38 |
| 2004 | 25 | 42 |
| 2005 | 26 | 44 |
| 2006 | 29 | 41 |
| 2007 | 22 | 38 |
| 2008 | 32 | 42 |
| 2009 | 48 | 64 |
| 2010 | 44 | 65 |
| 2011 | 42 | 69 |
| 2012 | 45 | 73 |
| 2013 | 67 | 87 |
| 2014 | 58 | 96 |
| 2015 | 71 | 141 |
| 2016 | 71 | 123 |
| 2017 | 76 | 130 |
| 2018 | 103 | 139 |
| 2019 | 130 | 140 |
| 2020 | 144 | 158 |
| 2021 | 130 | 124 |
| 2022 | 126 | 129 |
| 2023 | 129 | 132 |
| 2024 | 143 | 134 |
| 2025 | 110 | 100 |
| 2026 | 68 | 78 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Produced water degassing using ejector6 Oct 2026US 12,753,686 B1Saudi Arabian Oil Company
- Downhole filter29 Sep 2026US 12,746,488 B2Baker Hughes Oilfield Operations LLC
- Enhanced solvent recovery from tight rock and shale oil wells15 Sep 2026US 12,735,965 B2Oil Technology Group LLC
- Downhole fluid separator in re-entry multilateral well15 Sep 2026US 12,735,971 B2Halliburton Energy Services.Inc.
- Downhole fluid separator in lateral of re-entry multilateral well1 Sep 2026US 12,723,500 B2Halliburton Energy Services.Inc.
- Automated Plug Catcher Flushing System8 Oct 2026US 2026/0309017 A1
- Gas separator for electrical submersible pump8 Oct 2026US 2026/0309018 A1Halliburton Energy Services.Inc.
- Cathodic protection system and method for oil and gas heater treater vessel1 Oct 2026US 2026/0297759 A1
- Subterranean solids fallback protection device1 Oct 2026US 2026/0298065 A1Fallback LLC
- Combined gas separation assembly1 Oct 2026US 2026/0298066 A1Blackjack Production Tools, LLC
Most cited
By later US patents
- Method and a plant for transport of hydrocarbons over a long distance from an offshore source of hydrocarbons555US 4,991,614 AKvaerner Engineering A.S. · 1991
- System for recovery of petroleum from petroleum impregnated media433US 4,817,711 A1989
- Recovery of hydrocarbons from coal377US 3,999,607 AExxon Research & Engineering Co. · 1976
- Production of synthetic crude oil from heavy hydrocarbons recovered by in situ hydrovisbreaking351US 6,016,868 AWorld Energy Systems Incorporated · 2000
- Well control systems employing downhole network334US 5,959,547 ABaker Hughes Incorporated · 1999