E21B 31/08
Fishing for or freeing objects in boreholes or wells: using junk baskets
Official title: using junk baskets or the like
E21B31/08 (Fishing for or freeing objects in boreholes or wells: using junk baskets) appears on 46 US grants and 44 published applications in this corpus.
Search patents in E21B- Granted patents
- 46
- Published applications
- 44
- Assignees
- 30
- Inventors
- 97
- Latest grant
- 1 Jul 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 2 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 2 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 1 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 1 | 1 |
| 2006 | 0 | 0 |
| 2007 | 0 | 1 |
| 2008 | 0 | 0 |
| 2009 | 1 | 1 |
| 2010 | 0 | 2 |
| 2011 | 1 | 0 |
| 2012 | 0 | 4 |
| 2013 | 1 | 3 |
| 2014 | 4 | 1 |
| 2015 | 3 | 2 |
| 2016 | 1 | 3 |
| 2017 | 4 | 4 |
| 2018 | 1 | 1 |
| 2019 | 4 | 3 |
| 2020 | 2 | 3 |
| 2021 | 2 | 0 |
| 2022 | 0 | 1 |
| 2023 | 1 | 3 |
| 2024 | 4 | 4 |
| 2025 | 3 | 2 |
| 2026 | 0 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Rotating check valve for improved downhole operations1 Jul 2025US 12,345,111 B1Schlumberger Technology Corporation
- System and method for milling past wellbore restrictions29 Apr 2025US 12,286,852 B2National Petroleum Technology Company
- Method and system for simultaneous wireline milling and debris collection25 Feb 2025US 12,234,700 B2Schlumberger Technology Corporation
- Downhole clean out tool13 Aug 2024US 12,060,771 B2Saudi Arabian Oil Company
- Solid trap for ESP applications6 Aug 2024US 12,055,026 B2Saudi Arabian Oil Company
- Apparatus for recovering debris from a wellbore8 Oct 2026US 2026/0308994 A1Grant Prideco, L.P.
- Device, system and method for removal of cable clamps from a pipe string30 Jul 2026US 2026/0218581 A1Odfjell Technology Invest Ltd
- Methods and systems for a wet bottom sub11 Jun 2026US 2026/0160151 A1Vertice Oil Tools Inc.
- Downhole debris collection device for horizontal wells19 Mar 2026US 2026/0078648 A1Halliburton Energy Services.Inc.
- Methods to remove alloy plugs and annular seals and associated apparatus18 Sep 2025US 2025/0290379 A1BiSN Tec Ltd
Most cited
By later US patents
- Junk basket and method of use87US 6,341,653 B12002
- Junk basket and method of removing foreign material from a well73US 4,059,155 AInternational Enterprises, Inc. · 1977
- Junk basket52US 4,276,931 ATri-State Oil Tool Industries, Inc. · 1981
- Multipurpose fluid flow assisted downhole tool42US 4,296,822 AOmega Tools International · 1981
- Internal casing wiper for an oil field well bore hole41US 4,515,212 AMarathon Oil Company · 1985