E21B 43/385
By reinjecting the separated materials into an earth formation in the same
Official title: {by reinjecting the separated materials into an earth formation in the same well}
E21B43/385 (By reinjecting the separated materials into an earth formation in the same) appears on 216 US grants and 136 published applications in this corpus.
Search patents in E21B- Granted patents
- 216
- Published applications
- 136
- Assignees
- 77
- Inventors
- 382
- Latest grant
- 1 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 3 | 0 |
| 1982 | 0 | 0 |
| 1983 | 2 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 3 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 4 | 0 |
| 1995 | 4 | 0 |
| 1996 | 2 | 0 |
| 1997 | 3 | 0 |
| 1998 | 8 | 0 |
| 1999 | 11 | 0 |
| 2000 | 32 | 0 |
| 2001 | 14 | 1 |
| 2002 | 6 | 5 |
| 2003 | 4 | 7 |
| 2004 | 4 | 7 |
| 2005 | 7 | 3 |
| 2006 | 5 | 5 |
| 2007 | 4 | 2 |
| 2008 | 2 | 5 |
| 2009 | 4 | 6 |
| 2010 | 6 | 6 |
| 2011 | 3 | 6 |
| 2012 | 4 | 2 |
| 2013 | 3 | 5 |
| 2014 | 0 | 5 |
| 2015 | 3 | 3 |
| 2016 | 4 | 1 |
| 2017 | 2 | 8 |
| 2018 | 4 | 3 |
| 2019 | 7 | 5 |
| 2020 | 5 | 6 |
| 2021 | 8 | 5 |
| 2022 | 6 | 7 |
| 2023 | 7 | 7 |
| 2024 | 10 | 5 |
| 2025 | 10 | 19 |
| 2026 | 6 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Downhole fluid separator in lateral of re-entry multilateral well1 Sep 2026US 12,723,500 B2Halliburton Energy Services.Inc.
- Cleaning devices and operations for downhole separation in a well4 Aug 2026US 12,698,686 B2Halliburton Energy Services.Inc.
- Cyclonic solids removal unit for downhole oil-water separation (DOWS)21 Jul 2026US 12,687,098 B2Halliburton Energy Services.Inc.
- Submersible pumping systems with intake modules having tangential fluid intake ports2 Jun 2026US 12,644,364 B2Baker Hughes Oilfield Operations LLC
- Downhole separator24 Mar 2026US 12,584,398 B2Oilify New-tech Solutions Inc.
- Cleaning devices and operations for downhole separation in a well17 Sep 2026US 2026/0275820 A1Halliburton Energy Services.Inc.
- ESP Recirculation System with Gas Separation14 May 2026US 2026/0132709 A1Baker Hughes Oilfield Operations LLC
- Method to mitigate wellbore instabilities18 Dec 2025US 2025/0382854 A1Schlumberger Technology Corporation
- Systems and methods for hydrogen production from an underground formation4 Dec 2025US 2025/0369333 A1Saudi Arabian Oil Company
- Downhole sand and gas separator4 Dec 2025US 2025/0369334 A1Endurance Lift Solutions, LLC
Most cited
By later US patents
- Well control systems employing downhole network334US 5,959,547 ABaker Hughes Incorporated · 1999
- Electrical submersible pump and methods for enhanced utilization of electrical submersible pumps in the completion and production of wellbores267US 6,167,965 ABaker Hughes Incorporated · 2001
- Downhole gas separation method and system139US 6,755,251 B2ExxonMobil Upstream Research Company · 2004
- Downhole separator for use in a subterranean well and method130US 6,367,547 B1Halliburton Energy Services.Inc. · 2002
- Downhole separator for wells119US 4,241,787 A1980