E21B 43/248
Using explosives
Official title: using explosives
E21B43/248 (Using explosives) appears on 105 US grants and 35 published applications in this corpus.
Search patents in E21B- Granted patents
- 105
- Published applications
- 35
- Assignees
- 32
- Inventors
- 114
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 6 | 0 |
| 1978 | 3 | 0 |
| 1979 | 3 | 0 |
| 1980 | 9 | 0 |
| 1981 | 9 | 0 |
| 1982 | 10 | 0 |
| 1983 | 9 | 0 |
| 1984 | 18 | 0 |
| 1985 | 7 | 0 |
| 1986 | 1 | 0 |
| 1987 | 2 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 2 | 2 |
| 2008 | 1 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 1 |
| 2011 | 0 | 1 |
| 2012 | 0 | 0 |
| 2013 | 0 | 1 |
| 2014 | 1 | 1 |
| 2015 | 1 | 3 |
| 2016 | 0 | 1 |
| 2017 | 1 | 2 |
| 2018 | 1 | 2 |
| 2019 | 3 | 6 |
| 2020 | 3 | 1 |
| 2021 | 3 | 3 |
| 2022 | 1 | 2 |
| 2023 | 3 | 1 |
| 2024 | 2 | 5 |
| 2025 | 2 | 3 |
| 2026 | 2 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Boosting well performance in geothermal systems15 Sep 2026US 12,735,966 B2Schlumberger Technology Corporation
- Systems and methods of initiating energetic reactions for reservoir stimulation24 Feb 2026US 12,560,066 B2Schlumberger Technology Corporation
- Oil production system and method10 Jun 2025US 12,326,072 B2
- Systems and methods of initiating energetic reactions for reservoir stimulation22 Apr 2025US 12,281,559 B2Schlumberger Technology Corporation
- Underground mining methods via boreholes and multilateral blast-holes24 Sep 2024US 12,098,636 B2
- Well selection methodology for the deployment of in-situ shock wave stimulation processes in carbonate reservoirs30 Oct 2025US 2025/0334035 A1Saudi Arabian Oil Company
- Oil Production System and Method28 Aug 2025US 2025/0270911 A1
- Systems and Methods of Initiating Energetic Reactions for Reservoir Stimulation31 Jul 2025US 2025/0243739 A1Schlumberger Technology Corporation
- Boosting well performance in geothermal systems5 Dec 2024US 2024/0401450 A1Schlumberger Technology Corporation
- Systems and Methods of Initiating Energetic Reactions for Reservoir Stimulation9 May 2024US 2024/0151129 A1Schlumberger Technology Corporation
Most cited
By later US patents
- Oil recovery method and apparatus312US 4,305,463 AOil Trieval Corporation · 1981
- Method for oil recovery by in situ exfoliation drive175US 4,491,179 A1985
- Method for in situ heating of hydrocarbonaceous formations123US 4,705,108 AThe United States of America as represented by the United States Department of Energy · 1987
- Method for recovery of hydrocarbons from oil-bearing limestone or dolomite104US 4,366,864 AExxon Research & Engineering Co. · 1983
- Oil shale retorting from a high porosity cavern39US 4,185,693 AConoco Inc. · 1980