E21B 43/1193
Dropping perforation guns after gun actuation
Official title: {Dropping perforation guns after gun actuation}
E21B43/1193 (Dropping perforation guns after gun actuation) appears on 66 US grants and 30 published applications in this corpus.
Search patents in E21B- Granted patents
- 66
- Published applications
- 30
- Assignees
- 25
- Inventors
- 127
- Latest grant
- 18 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 2 | 0 |
| 1986 | 0 | 0 |
| 1987 | 3 | 0 |
| 1988 | 6 | 0 |
| 1989 | 3 | 0 |
| 1990 | 1 | 0 |
| 1991 | 2 | 0 |
| 1992 | 3 | 0 |
| 1993 | 0 | 0 |
| 1994 | 5 | 0 |
| 1995 | 3 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 3 | 0 |
| 2000 | 1 | 0 |
| 2001 | 2 | 0 |
| 2002 | 2 | 3 |
| 2003 | 3 | 1 |
| 2004 | 0 | 0 |
| 2005 | 1 | 1 |
| 2006 | 0 | 1 |
| 2007 | 0 | 1 |
| 2008 | 1 | 2 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 1 |
| 2012 | 1 | 1 |
| 2013 | 4 | 4 |
| 2014 | 3 | 4 |
| 2015 | 0 | 0 |
| 2016 | 3 | 1 |
| 2017 | 0 | 0 |
| 2018 | 1 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 1 |
| 2021 | 2 | 1 |
| 2022 | 1 | 1 |
| 2023 | 2 | 3 |
| 2024 | 1 | 2 |
| 2025 | 2 | 1 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Orienting perforation gun assembly18 Aug 2026US 12,709,966 B2DynaEnergetics Europe GmbH
- Toolstring and method for inner casing perforating, shattering annulus cement, and washing the first annulus in a second casing19 Aug 2025US 12,392,217 B2Archer Oiltools AS
- Orienting perforation gun assembly24 Jun 2025US 12,338,718 B2DynaEnergetics Europe GmbH
- Method and apparatus for plugging17 Dec 2024US 12,168,910 B2Wellstrøm AS
- Electro-mechanical release tool and associated methods7 Nov 2023US 11,808,092 B2King Southwest & Consulting of Cypress
- Pump down well stimulation24 Sep 2026US 2026/0286814 A1Torsch Inc.
- Orienting perforation gun assembly28 Aug 2025US 2025/0270905 A1DynaEnergetics Europe GmbH
- Downhole perforation tool12 Sep 2024US 2024/0301772 A1Saudi Arabian Oil Company
- Toolstring and method for inner casing perforating, shattering annulus cement, and washing the first annulus in a second casing25 Jul 2024US 2024/0247564 A1Archer Oiltools AS
- Orienting perforation gun assembly12 Oct 2023US 2023/0323759 A1DynaEnergetics Europe GmbH
Most cited
By later US patents
- Well completion method and apparatus158US 5,156,213 AHalliburton Company · 1992
- Tubing and wireline conveyed perforating method and apparatus122US 5,025,861 ASchlumberger Technology Corporation · 1991
- Assembly and method for multi-zone fracture stimulation of a reservoir using autonomous tubular units119US 9,284,819 B2ExxonMobil Upstream Research Company · 2016
- Method of drilling and completing wells116US 5,662,170 ABaker Hughes Incorporated · 1997
- Perforating gun automatic release mechanism113US 4,776,393 ADresser Industries, Inc. · 1988