E21B 43/108
Expandable screens or perforated liners
Official title: {Expandable screens or perforated liners}
E21B43/108 (Expandable screens or perforated liners) appears on 361 US grants and 389 published applications in this corpus.
Search patents in E21B- Granted patents
- 361
- Published applications
- 389
- Assignees
- 66
- Inventors
- 529
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 3 | 0 |
| 2000 | 4 | 0 |
| 2001 | 8 | 1 |
| 2002 | 9 | 27 |
| 2003 | 15 | 27 |
| 2004 | 27 | 32 |
| 2005 | 17 | 34 |
| 2006 | 19 | 12 |
| 2007 | 29 | 13 |
| 2008 | 12 | 8 |
| 2009 | 6 | 6 |
| 2010 | 10 | 6 |
| 2011 | 2 | 5 |
| 2012 | 5 | 9 |
| 2013 | 9 | 25 |
| 2014 | 12 | 15 |
| 2015 | 13 | 29 |
| 2016 | 18 | 23 |
| 2017 | 20 | 8 |
| 2018 | 15 | 22 |
| 2019 | 15 | 15 |
| 2020 | 27 | 21 |
| 2021 | 15 | 9 |
| 2022 | 12 | 13 |
| 2023 | 10 | 17 |
| 2024 | 13 | 2 |
| 2025 | 9 | 5 |
| 2026 | 4 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Shape memory foam screen in conjunction with shrouded over deformable chambers for wellbore compliance29 Sep 2026US 12,747,655 B1Halliburton Energy Services.Inc.
- Adjustable screen size using interchangeable shrouds8 Sep 2026US 12,729,608 B1Halliburton Energy Services.Inc.
- Sand screen with a non-woven fiber polymer filter31 Mar 2026US 12,590,513 B2Schlumberger Technology Corporation
- Compliant screen with flow restrictive portions to reduce cross flow of wellbore fluids17 Mar 2026US 12,577,858 B1Halliburton Energy Services.Inc.
- Sand screens and related products and methods16 Dec 2025US 12,497,867 B2Isealate AS
- Porous polymeric material and filtration device6 Aug 2026US 2026/0226815 A1Baker Hughes Oilfield Operations LLC
- Apparatus for drilling and positioning a collar support sleeve into a blast hole16 Jul 2026US 2026/0201778 A1
- Compliant screen with flow restrictive portions to reduce cross flow of wellbore fluids4 Jun 2026US 2026/0153016 A1Halliburton Energy Services.Inc.
- Compliant screen with flow restrictive portions to reduce cross flow of wellbore fluids19 Mar 2026US 2026/0078656 A1Halliburton Energy Services.Inc.
- Shape-memory articles and method of manufacture1 Jan 2026US 2026/0001285 A1Baker Hughes Oilfield Operations LLC
Most cited
By later US patents
- Method of completing an uncased section of a borehole576US 5,366,012 AShell Oil Company · 1994
- Expandable tubing for a well bore hole and method of expanding443US 6,354,373 B1Schlumberger Technology Corporation · 2002
- Method of creating a casing in a borehole325US 5,667,011 AShell Oil Company · 1997
- Deformable well screen320US 5,901,789 AShell Oil Company · 1999
- Well completions with expandable casing portions297US 5,396,957 AHalliburton Company · 1995