E21B 43/17
Interconnecting two or more wells by fracturing or otherwise attacking the formation
Official title: Interconnecting two or more wells by fracturing or otherwise attacking the formation ({E21B43/2405,} E21B43/247 take precedence)
E21B43/17 (Interconnecting two or more wells by fracturing or otherwise attacking the formation) appears on 179 US grants and 125 published applications in this corpus.
Search patents in E21B- Granted patents
- 179
- Published applications
- 125
- Assignees
- 76
- Inventors
- 308
- Latest grant
- 28 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 6 | 0 |
| 1978 | 5 | 0 |
| 1979 | 3 | 0 |
| 1980 | 9 | 0 |
| 1981 | 6 | 0 |
| 1982 | 4 | 0 |
| 1983 | 2 | 0 |
| 1984 | 3 | 0 |
| 1985 | 2 | 0 |
| 1986 | 1 | 0 |
| 1987 | 3 | 0 |
| 1988 | 3 | 0 |
| 1989 | 3 | 0 |
| 1990 | 0 | 0 |
| 1991 | 3 | 0 |
| 1992 | 0 | 0 |
| 1993 | 4 | 0 |
| 1994 | 2 | 0 |
| 1995 | 2 | 0 |
| 1996 | 1 | 0 |
| 1997 | 2 | 0 |
| 1998 | 0 | 0 |
| 1999 | 3 | 0 |
| 2000 | 4 | 0 |
| 2001 | 1 | 1 |
| 2002 | 1 | 0 |
| 2003 | 0 | 0 |
| 2004 | 1 | 0 |
| 2005 | 0 | 1 |
| 2006 | 1 | 0 |
| 2007 | 0 | 3 |
| 2008 | 0 | 2 |
| 2009 | 0 | 4 |
| 2010 | 4 | 6 |
| 2011 | 1 | 2 |
| 2012 | 3 | 4 |
| 2013 | 4 | 4 |
| 2014 | 2 | 8 |
| 2015 | 5 | 6 |
| 2016 | 6 | 9 |
| 2017 | 4 | 9 |
| 2018 | 7 | 8 |
| 2019 | 10 | 9 |
| 2020 | 8 | 7 |
| 2021 | 8 | 18 |
| 2022 | 15 | 3 |
| 2023 | 11 | 7 |
| 2024 | 6 | 8 |
| 2025 | 2 | 3 |
| 2026 | 7 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Method and system to create a tortuous flow path28 Jul 2026US 12,692,771 B2Schlumberger Technology Corporation
- Methods for in-depth fluid diversion and stage by stage fluid diversion systems16 Jun 2026US 12,655,730 B1Saudi Arabian Oil Company
- Compositions and methods for pressure protection2 Jun 2026US 12,644,043 B2Chevron U.S.A.Inc.
- Maximizing stimulation efficiency and contact area for heat harvesting31 Mar 2026US 12,590,520 B1Mazama Energy, Inc.
- System and method for using controlled fractures in enhanced geothermal systems20 Jan 2026US 12,529,296 B2Board of Supervisors of Louisiana State University and Agricultural and Mechanical College
- Methods for in-depth fluid diversion and stage by stage fluid diversion systems1 Oct 2026US 2026/0298059 A1Saudi Arabian Oil Company
- Method and system to create a tortuous flow path23 Jul 2026US 2026/0210217 A1Schlumberger Technology Corporation
- Enhancing connectivity between injector and producer wells using sequenced stimulation15 Jan 2026US 2026/0015926 A1Mazama Energy, Inc.
- Combined well system and method for enhanced production20 Nov 2025US 2025/0354468 A1Combined Well Systems, LLC
- Comprehensive workflow to model naturally fractured reservoirs24 Apr 2025US 2025/0129716 A1King Abdullah University of Science and Technology
Most cited
By later US patents
- In situ radio frequency selective heating system392US 4,457,365 ARaytheon Company · 1984
- Method for production of organic products from kerogen377US 4,193,451 AThe Badger Company, Inc. · 1980
- Producing methane from coal in situ351US 4,089,374 AIn Situ Technology, Inc. · 1978
- Coalbed methane recovery using membrane separation of oxygen from air288US 5,388,642 AAmoco Corporation · 1995
- Apparatus and method for production of organic products from kerogen243US 4,487,257 ARaytheon Company · 1984