E21B 43/32
Preventing gas- or water-coning phenomena, i.e. the formation of a conical column
Official title: Preventing gas- or water-coning phenomena, i.e. the formation of a conical column of gas or water around wells
E21B43/32 (Preventing gas- or water-coning phenomena, i.e. the formation of a conical column) appears on 190 US grants and 127 published applications in this corpus.
Search patents in E21B- Granted patents
- 190
- Published applications
- 127
- Assignees
- 76
- Inventors
- 353
- Latest grant
- 28 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 2 | 0 |
| 1981 | 4 | 0 |
| 1982 | 1 | 0 |
| 1983 | 3 | 0 |
| 1984 | 4 | 0 |
| 1985 | 2 | 0 |
| 1986 | 2 | 0 |
| 1987 | 5 | 0 |
| 1988 | 3 | 0 |
| 1989 | 1 | 0 |
| 1990 | 3 | 0 |
| 1991 | 4 | 0 |
| 1992 | 0 | 0 |
| 1993 | 5 | 0 |
| 1994 | 14 | 0 |
| 1995 | 3 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 5 | 0 |
| 2000 | 3 | 0 |
| 2001 | 7 | 1 |
| 2002 | 4 | 4 |
| 2003 | 4 | 1 |
| 2004 | 1 | 2 |
| 2005 | 3 | 4 |
| 2006 | 3 | 1 |
| 2007 | 3 | 4 |
| 2008 | 1 | 4 |
| 2009 | 3 | 19 |
| 2010 | 7 | 4 |
| 2011 | 10 | 9 |
| 2012 | 4 | 6 |
| 2013 | 5 | 10 |
| 2014 | 9 | 10 |
| 2015 | 5 | 4 |
| 2016 | 9 | 3 |
| 2017 | 5 | 2 |
| 2018 | 1 | 5 |
| 2019 | 5 | 6 |
| 2020 | 8 | 9 |
| 2021 | 3 | 4 |
| 2022 | 8 | 2 |
| 2023 | 3 | 8 |
| 2024 | 5 | 2 |
| 2025 | 3 | 2 |
| 2026 | 2 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Gas breakthrough analysis28 Apr 2026US 12,612,857 B2Equinor Energy AS
- Laser milling and injection system for water coning remediation14 Apr 2026US 12,601,234 B1Saudi Arabian Oil Company
- Flow control device and method26 Aug 2025US 12,398,616 B2InflowControl AS
- Flow control system for use in a subterranean well24 Jun 2025US 12,338,719 B2Halliburton Energy Services.Inc.
- Method for leveling the injectivity profile of an injection well20 May 2025US 12,305,117 B2Limited Liability Company Oilmind
- A device and method for measuring pressure in immiscible fluids in a subterranean reservoir9 Jul 2026US 2026/0193982 A1Hydrophilic AS
- Flow Control System for Use in a Subterranean Well18 Sep 2025US 2025/0290391 A1Halliburton Energy Services.Inc.
- Gas breakthrough analysis27 Feb 2025US 2025/0067170 A1Equinor Energy AS
- A flow control device and method14 Mar 2024US 2024/0084670 A1InflowControl AS
- Flow control system for use in a subterranean well7 Mar 2024US 2024/0076968 A1Halliburton Energy Services.Inc.
Most cited
By later US patents
- Flow control regulation method and apparatus127US 6,786,285 B2Schlumberger Technology Corporation · 2004
- Method of preventing gas coning and fingering in a high temperature hydrocarbon bearing formation126US 5,320,171 AHalliburton Company · 1994
- Inflow control device with passive shut-off feature115US 7,290,606 B2Baker Hughes Incorporated · 2007
- Chemical actuation of downhole tools101US 6,349,766 B1Baker Hughes Incorporated · 2002
- Unconsolidated zonal isolation and control96US 6,318,465 B1Baker Hughes Incorporated · 2001