E21B 43/162
Injecting fluid from longitudinally spaced locations in injection well
Official title: {Injecting fluid from longitudinally spaced locations in injection well}
E21B43/162 (Injecting fluid from longitudinally spaced locations in injection well) appears on 272 US grants and 268 published applications in this corpus.
Search patents in E21B- Granted patents
- 272
- Published applications
- 268
- Assignees
- 101
- Inventors
- 579
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 5 | 0 |
| 1980 | 5 | 0 |
| 1981 | 3 | 0 |
| 1982 | 0 | 0 |
| 1983 | 5 | 0 |
| 1984 | 2 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 6 | 0 |
| 1988 | 5 | 0 |
| 1989 | 2 | 0 |
| 1990 | 2 | 0 |
| 1991 | 4 | 0 |
| 1992 | 3 | 0 |
| 1993 | 1 | 0 |
| 1994 | 2 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 3 | 0 |
| 1999 | 2 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 1 |
| 2002 | 2 | 1 |
| 2003 | 1 | 3 |
| 2004 | 1 | 1 |
| 2005 | 0 | 1 |
| 2006 | 3 | 2 |
| 2007 | 0 | 1 |
| 2008 | 0 | 2 |
| 2009 | 0 | 8 |
| 2010 | 1 | 6 |
| 2011 | 7 | 11 |
| 2012 | 9 | 10 |
| 2013 | 5 | 11 |
| 2014 | 10 | 14 |
| 2015 | 8 | 18 |
| 2016 | 10 | 14 |
| 2017 | 15 | 12 |
| 2018 | 9 | 24 |
| 2019 | 21 | 15 |
| 2020 | 20 | 23 |
| 2021 | 19 | 33 |
| 2022 | 25 | 11 |
| 2023 | 20 | 12 |
| 2024 | 9 | 7 |
| 2025 | 7 | 21 |
| 2026 | 11 | 6 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Methods for tight oil production through secondary recovery using spaced producer and injector wellbores29 Sep 2026US 12,747,657 B2
- Fast front tracking in EOR flooding simulation on coarse grids1 Sep 2026US 12,724,946 B2Schlumberger Technology Corporation
- Multilateral mainbore completion employing an expandable metal anchor30 Jun 2026US 12,669,035 B2Halliburton Energy Services.Inc.
- Two part milling and running tool employing a body lock ring9 Jun 2026US 12,650,059 B2Halliburton Energy Services.Inc.
- Compositions and methods for pressure protection2 Jun 2026US 12,644,043 B2Chevron U.S.A.Inc.
- Two part milling and running tool employing a body lock ring17 Sep 2026US 2026/0275830 A1Halliburton Energy Services.Inc.
- Hydrate management method14 May 2026US 2026/0132701 A1Cameron International Corporation
- Method for determining an outlet configuration of a liner2 Apr 2026US 2026/0092511 A1Abu Dhabi National Oil Company
- Hypergravity experimental apparatus and method for natural gas hydrate exploitation by hydraulic fracturing5 Mar 2026US 2026/0063020 A1Zhejiang University
- Multi-zone fracture stimulated injection well with autonomous injection regulators and protective sleeves12 Feb 2026US 2026/0043322 A1Chevron U.S.A.Inc.
Most cited
By later US patents
- Controlling hydrocarbon production609US 10,677,035 B2Saudi Arabian Oil Company · 2020
- Indirect thermal stimulation of production wells298US 4,274,487 AStandard Oil Company (Indiana) · 1981
- Simultaneous recovery of crude from multiple zones in a reservoir284US 4,669,542 AMobil Oil Corporation · 1987
- Apparatus and methods for delivering a high volume of fluid into an underground well bore from a mobile pumping unit222US 9,395,049 B2Baker Hughes Incorporated · 2016
- Method of recovering viscous oil from reservoirs with multiple horizontal zones201US 4,766,958 AMobil Oil Corporation · 1988