E21B 31/007
Fishing tools with means for attaching comprising fusing or sticking
Official title: {fishing tools with means for attaching comprising fusing or sticking}
E21B31/007 (Fishing tools with means for attaching comprising fusing or sticking) appears on 22 US grants and 24 published applications in this corpus.
Search patents in E21B- Granted patents
- 22
- Published applications
- 24
- Assignees
- 10
- Inventors
- 35
- Latest grant
- 20 Jan 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 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 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 2 |
| 2012 | 1 | 0 |
| 2013 | 2 | 2 |
| 2014 | 1 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 4 |
| 2018 | 0 | 0 |
| 2019 | 2 | 1 |
| 2020 | 1 | 3 |
| 2021 | 3 | 3 |
| 2022 | 3 | 1 |
| 2023 | 1 | 2 |
| 2024 | 3 | 1 |
| 2025 | 3 | 4 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Universal fishing tool and method of removing a fish from a wellbore20 Jan 2026US 12,529,278 B2Saudi Arabian Oil Company
- Downhole debris removal apparatus1 Jul 2025US 12,345,128 B2Halliburton Energy Services.Inc.
- Powder weld fishing tool24 Jun 2025US 12,338,700 B2Saudi Arabian Oil Company
- Laser cladding fishing tool3 Jun 2025US 12,320,220 B2Saudi Arabian Oil Company
- Fishing welding tool17 Sep 2024US 12,091,925 B2Saudi Arabian Oil Company
- Expandable polymer grout for wellbore applications5 Mar 2026US 2026/0063011 A1Chevron U.S.A.Inc.
- Universal fishing tool and method of removing a fish from a wellbore30 Oct 2025US 2025/0334014 A1Saudi Arabian Oil Company
- Methods and apparatuses for removing metal objects from wells19 Jun 2025US 2025/0198248 A1ExxonMobil Technology and Engineering Company
- Laser cladding fishing tool20 Mar 2025US 2025/0092750 A1Saudi Arabian Oil Company
- Powder weld fishing tool20 Mar 2025US 2025/0092751 A1Saudi Arabian Oil Company
Most cited
By later US patents
- Release assembly for a downhole tool string and method for use thereof32US 8,540,021 B2Halliburton Energy Services.Inc. · 2013
- Multi-zone fracturing completion25US 8,695,716 B2Baker Hughes Incorporated · 2014
- Method and fishing tool apparatus for recovering objects from wells24US 4,488,747 A1984
- Release assembly for a downhole tool string10US 8,496,065 B2Halliburton Energy Services.Inc. · 2013
- Downhole fishing tool5US 10,309,187 B2BiSN Tec Ltd · 2019