E21B 43/117
Shaped-charge perforators
Official title: Shaped-charge perforators (E21B43/118 takes precedence)
E21B43/117 (Shaped-charge perforators) appears on 812 US grants and 737 published applications in this corpus.
Search patents in E21B- Granted patents
- 812
- Published applications
- 737
- Assignees
- 143
- Inventors
- 834
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 2 | 0 |
| 1978 | 4 | 0 |
| 1979 | 2 | 0 |
| 1980 | 5 | 0 |
| 1981 | 6 | 0 |
| 1982 | 5 | 0 |
| 1983 | 5 | 0 |
| 1984 | 4 | 0 |
| 1985 | 12 | 0 |
| 1986 | 5 | 0 |
| 1987 | 10 | 0 |
| 1988 | 16 | 0 |
| 1989 | 14 | 0 |
| 1990 | 4 | 0 |
| 1991 | 9 | 0 |
| 1992 | 6 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 3 | 0 |
| 1996 | 4 | 0 |
| 1997 | 9 | 0 |
| 1998 | 6 | 0 |
| 1999 | 6 | 0 |
| 2000 | 8 | 0 |
| 2001 | 3 | 4 |
| 2002 | 17 | 11 |
| 2003 | 11 | 8 |
| 2004 | 6 | 16 |
| 2005 | 14 | 18 |
| 2006 | 6 | 7 |
| 2007 | 13 | 15 |
| 2008 | 12 | 13 |
| 2009 | 6 | 12 |
| 2010 | 14 | 19 |
| 2011 | 7 | 12 |
| 2012 | 7 | 12 |
| 2013 | 12 | 26 |
| 2014 | 17 | 19 |
| 2015 | 22 | 28 |
| 2016 | 17 | 32 |
| 2017 | 25 | 43 |
| 2018 | 29 | 41 |
| 2019 | 48 | 54 |
| 2020 | 48 | 58 |
| 2021 | 53 | 69 |
| 2022 | 72 | 69 |
| 2023 | 53 | 38 |
| 2024 | 50 | 49 |
| 2025 | 67 | 45 |
| 2026 | 33 | 19 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Downhole perforating gun tube and components29 Sep 2026US 12,747,656 B1SWM International, LLC
- Multi-stage perforating22 Sep 2026US 12,742,371 B1Saudi Arabian Oil Company
- Electronic device and method for orientation-measuring device for downhole perforations22 Sep 2026US 12,742,372 B2Advanced Wireline Solutions, Inc.
- Perforating gun assembly with performance optimized shaped charge load1 Sep 2026US 12,723,494 B2DynaEnergetics Europe GmbH
- Segmented gun components with integrated contacts1 Sep 2026US 12,723,495 B2Halliburton Energy Services.Inc.
- Disposable perforation tool8 Oct 2026US 2026/0309008 A1Schlumberger Technology Corporation
- Switch module for wellbore perforating gun24 Sep 2026US 2026/0286815 A1G&H Diversified Manufacturing LP
- Perforation system and method17 Sep 2026US 2026/0275834 A1Baker Hughes Oilfield Operations LLC
- Bearingless monolithic charge holder for perforating gun27 Aug 2026US 2026/0251038 A1DynaEnergetics Europe GmbH
- Overmolded shaped charge and methods of use13 Aug 2026US 2026/0235018 A1Defiant Precision Technologies, LLC
Most cited
By later US patents
- Method and apparatus for stimulation of multiple formation intervals249US 6,394,184 B2ExxonMobil Upstream Research Company · 2002
- Apparatus and method for perforating and stimulating a subterranean formation156US 5,775,426 AMarathon Oil Company · 1998
- Method and system for performing a casing conveyed perforating process and other operations in wells143US 6,536,524 B1Marathon Oil Company · 2003
- Selectable, internally oriented and/or integrally transportable explosive assemblies138US 9,689,223 B2Halliburton Energy Services.Inc. · 2017
- Well completion method and apparatus129US 4,372,384 AGeo Vann, Inc. · 1983