E21B 43/255
Including the injection of a gaseous medium as treatment fluid into the
Official title: {including the injection of a gaseous medium as treatment fluid into the formation}
E21B43/255 (Including the injection of a gaseous medium as treatment fluid into the) appears on 107 US grants and 120 published applications in this corpus.
Search patents in E21B- Granted patents
- 107
- Published applications
- 120
- Assignees
- 75
- Inventors
- 270
- Latest grant
- 2 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 2 | 0 |
| 1980 | 2 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 2 | 0 |
| 1984 | 3 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 2 | 0 |
| 1991 | 4 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 4 | 0 |
| 2002 | 0 | 0 |
| 2003 | 1 | 2 |
| 2004 | 2 | 2 |
| 2005 | 1 | 2 |
| 2006 | 1 | 1 |
| 2007 | 2 | 0 |
| 2008 | 0 | 2 |
| 2009 | 0 | 0 |
| 2010 | 0 | 4 |
| 2011 | 1 | 3 |
| 2012 | 1 | 0 |
| 2013 | 2 | 2 |
| 2014 | 2 | 5 |
| 2015 | 3 | 13 |
| 2016 | 2 | 14 |
| 2017 | 10 | 10 |
| 2018 | 11 | 9 |
| 2019 | 6 | 9 |
| 2020 | 7 | 9 |
| 2021 | 7 | 9 |
| 2022 | 13 | 3 |
| 2023 | 4 | 5 |
| 2024 | 3 | 3 |
| 2025 | 2 | 10 |
| 2026 | 1 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Compositions and methods for pressure protection2 Jun 2026US 12,644,043 B2Chevron U.S.A.Inc.
- Carbon dioxide enhanced hydrocarbon recovery methods coupled with underground hydrogen storage15 Jul 2025US 12,359,539 B2Saudi Arabian Oil Company
- Method for well stimulation using nanobubbles8 Jul 2025US 12,352,146 B2Saudi Arabian Oil Company
- Foamed wettability alteration treatment for deep condensate and water blockage in gas reservoirs13 Aug 2024US 12,060,520 B2Aramco Services Company
- Air lifting sand2 Jul 2024US 12,024,989 B2Sio Silica Coporation
- Method for well stimulation using nanobubbles30 Apr 2026US 2026/0117633 A1Saudi Arabian Oil Company
- Mathod for well stimulation using nanobubbles16 Apr 2026US 2026/0103967 A1Saudi Arabian Oil Company
- Geothermal field management using fiber optics5 Feb 2026US 2026/0036026 A1Schlumberger Technology Corporation
- Systems and Methods of Generating Electric Power With Compressed Natural Gas4 Dec 2025US 2025/0369315 A1Service Compression LLC
- Method for well stimulation using nanobubbles11 Sep 2025US 2025/0283397 A1Saudi Arabian Oil Company
Most cited
By later US patents
- Method of increasing the permeability of a coal seam182US 5,014,788 AAmoco Corporation · 1991
- Pressure controlled wellbore treatment97US 11,035,213 B2Halliburton Energy Services.Inc. · 2021
- Initiating production of methane from wet coal beds93US 4,544,037 AIn Situ Technology, Inc. · 1985
- Method for acid stimulating a subterranean well formation for improving hydrocarbon production81US 6,719,054 B2Halliburton Energy Services.Inc. · 2004
- Method for increasing methane recovery from a subterranean coal formation by injection of tail gas from a hydrocarbon synthesis process65US 5,769,165 AVastar Resources, Inc. · 1998