E21B 43/08
Screens or liners
Official title: Screens or liners {(expandable screens or liners E21B43/108)}
E21B43/08 (Screens or liners) appears on 1,696 US grants and 1,607 published applications in this corpus.
Search patents in E21B- Granted patents
- 1,696
- Published applications
- 1,607
- Assignees
- 357
- Inventors
- 2,126
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 10 | 0 |
| 1977 | 6 | 0 |
| 1978 | 4 | 0 |
| 1979 | 3 | 0 |
| 1980 | 7 | 0 |
| 1981 | 10 | 0 |
| 1982 | 9 | 0 |
| 1983 | 9 | 0 |
| 1984 | 8 | 0 |
| 1985 | 8 | 0 |
| 1986 | 4 | 0 |
| 1987 | 7 | 0 |
| 1988 | 8 | 0 |
| 1989 | 9 | 0 |
| 1990 | 8 | 0 |
| 1991 | 13 | 0 |
| 1992 | 18 | 0 |
| 1993 | 13 | 0 |
| 1994 | 28 | 0 |
| 1995 | 17 | 0 |
| 1996 | 10 | 0 |
| 1997 | 12 | 0 |
| 1998 | 18 | 0 |
| 1999 | 23 | 0 |
| 2000 | 16 | 0 |
| 2001 | 25 | 8 |
| 2002 | 32 | 64 |
| 2003 | 46 | 55 |
| 2004 | 58 | 74 |
| 2005 | 28 | 54 |
| 2006 | 54 | 30 |
| 2007 | 49 | 46 |
| 2008 | 33 | 46 |
| 2009 | 24 | 59 |
| 2010 | 57 | 41 |
| 2011 | 38 | 60 |
| 2012 | 45 | 53 |
| 2013 | 42 | 77 |
| 2014 | 42 | 88 |
| 2015 | 61 | 100 |
| 2016 | 72 | 98 |
| 2017 | 73 | 100 |
| 2018 | 86 | 96 |
| 2019 | 112 | 100 |
| 2020 | 108 | 81 |
| 2021 | 83 | 75 |
| 2022 | 82 | 58 |
| 2023 | 54 | 45 |
| 2024 | 44 | 43 |
| 2025 | 37 | 27 |
| 2026 | 33 | 29 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Downhole filter29 Sep 2026US 12,746,488 B2Baker Hughes Oilfield Operations LLC
- Water well submersible pump filter29 Sep 2026US 12,747,741 B2FES Labs, LLC
- Downhole autonomous inflow control device8 Sep 2026US 12,729,601 B1Saudi Arabian Oil Company
- High solids content fluid techniques1 Sep 2026US 12,723,492 B2Schlumberger Technology Corporation
- Extended chemical treatment in subterranean wells25 Aug 2026US 12,716,308 B2Odessa Separator, Inc.
- Downhole tool, well system, and method for ammonia or methanol production1 Oct 2026US 2026/0298051 A1Halliburton Energy Services.Inc.
- Compositions and methods for use of proppant surface chemistry to improve proppant consolidation and flowback control24 Sep 2026US 2026/0286824 A1Carbo Ceramics Inc.
- Downhole autonomous inflow control device10 Sep 2026US 2026/0266158 A1Saudi Arabian Oil Company
- Running tool and tubular coupled with a clutch that is impact resistant and/or reduces flow erosion13 Aug 2026US 2026/0235017 A1
- Downhole filter6 Aug 2026US 2026/0225009 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 and apparatus for testing, completion and/or maintaining wellbores using a sensor device420US 5,829,520 ABaker Hughes Incorporated · 1998
- System for completing multiple well intervals336US 7,387,165 B2Schlumberger Technology Corporation · 2008
- Deformable well screen320US 5,901,789 AShell Oil Company · 1999