E21B 27/005
Collecting means with a strainer
Official title: {Collecting means with a strainer}
E21B27/005 (Collecting means with a strainer) appears on 125 US grants and 139 published applications in this corpus.
Search patents in E21B- Granted patents
- 125
- Published applications
- 139
- Assignees
- 56
- Inventors
- 239
- Latest grant
- 2 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 3 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 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 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 2 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 3 | 0 |
| 2002 | 0 | 1 |
| 2003 | 3 | 3 |
| 2004 | 2 | 3 |
| 2005 | 1 | 0 |
| 2006 | 2 | 5 |
| 2007 | 3 | 1 |
| 2008 | 1 | 5 |
| 2009 | 7 | 8 |
| 2010 | 4 | 7 |
| 2011 | 3 | 4 |
| 2012 | 7 | 7 |
| 2013 | 4 | 6 |
| 2014 | 4 | 7 |
| 2015 | 7 | 4 |
| 2016 | 4 | 5 |
| 2017 | 2 | 5 |
| 2018 | 9 | 14 |
| 2019 | 9 | 9 |
| 2020 | 7 | 3 |
| 2021 | 1 | 4 |
| 2022 | 5 | 8 |
| 2023 | 5 | 5 |
| 2024 | 9 | 10 |
| 2025 | 7 | 8 |
| 2026 | 6 | 7 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Milling and debris collecting with multiphase vacuum pump2 Jun 2026US 12,644,359 B2Schlumberger Technology Corporation
- Methods of swabbing liquid loaded wells, and killing wells, with the use of compression pumps, regulators and filtration techniques2 Jun 2026US 12,644,374 B2Zenrg Services, LLC
- Debris collection device with passive check valve14 Apr 2026US 12,601,247 B1Halliburton Energy Services.Inc.
- Fluid conditioning and/or treatment system10 Mar 2026US 12,571,269 B2Mason Specialty Tools, LLC
- Debris removal apparatus with self cleaning filter assembly, well system and method of use17 Feb 2026US 12,553,314 B2Halliburton Energy Services.Inc.
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- Sidewall Tubular Cleaner and Sampling Tool9 Jul 2026US 2026/0193983 A1Saudi Arabian Oil Company
- Fluid Conditioning and/or Treatment System18 Jun 2026US 2026/0168338 A1Mason Specialty Tools, LLC
- Modular polymer composite lift tube in a wellbore14 May 2026US 2026/0132686 A1Halliburton Energy Services.Inc.
- Downhole debris collection device for horizontal wells19 Mar 2026US 2026/0078648 A1Halliburton Energy Services.Inc.
Most cited
By later US patents
- Apparatus for removal of milling debris142US 6,276,452 B1Baker Hughes Incorporated · 2001
- Downhole cutting separator50US 6,176,311 B1Baker Hughes Incorporated · 2001
- Reverse circulation tool handling cuttings and debris45US 5,176,208 APonder Fishing Tools, Inc. · 1993
- Drilling fluid screen and method37US 6,598,685 B12003
- Screened boot basket/filter37US 6,607,031 B2Baker Hughes Incorporated · 2003