E21B 43/04
Gravelling of wells
E21B43/04 (Gravelling of wells) appears on 1,318 US grants and 999 published applications in this corpus.
Search patents in E21B- Granted patents
- 1,318
- Published applications
- 999
- Assignees
- 217
- Inventors
- 1,700
- Latest grant
- 1 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 13 | 0 |
| 1977 | 10 | 0 |
| 1978 | 11 | 0 |
| 1979 | 1 | 0 |
| 1980 | 4 | 0 |
| 1981 | 6 | 0 |
| 1982 | 9 | 0 |
| 1983 | 15 | 0 |
| 1984 | 16 | 0 |
| 1985 | 23 | 0 |
| 1986 | 15 | 0 |
| 1987 | 29 | 0 |
| 1988 | 13 | 0 |
| 1989 | 23 | 0 |
| 1990 | 23 | 0 |
| 1991 | 18 | 0 |
| 1992 | 25 | 0 |
| 1993 | 29 | 0 |
| 1994 | 38 | 0 |
| 1995 | 23 | 0 |
| 1996 | 18 | 0 |
| 1997 | 16 | 0 |
| 1998 | 23 | 0 |
| 1999 | 19 | 0 |
| 2000 | 10 | 0 |
| 2001 | 21 | 10 |
| 2002 | 18 | 28 |
| 2003 | 28 | 34 |
| 2004 | 33 | 35 |
| 2005 | 17 | 37 |
| 2006 | 28 | 31 |
| 2007 | 21 | 28 |
| 2008 | 25 | 21 |
| 2009 | 20 | 34 |
| 2010 | 26 | 50 |
| 2011 | 27 | 44 |
| 2012 | 41 | 49 |
| 2013 | 35 | 53 |
| 2014 | 43 | 52 |
| 2015 | 44 | 64 |
| 2016 | 50 | 79 |
| 2017 | 61 | 80 |
| 2018 | 67 | 73 |
| 2019 | 70 | 39 |
| 2020 | 56 | 36 |
| 2021 | 46 | 45 |
| 2022 | 40 | 23 |
| 2023 | 20 | 14 |
| 2024 | 25 | 18 |
| 2025 | 17 | 12 |
| 2026 | 9 | 10 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- High solids content fluid techniques1 Sep 2026US 12,723,492 B2Schlumberger Technology Corporation
- Screen assembly having permeable handling area11 Aug 2026US 12,704,030 B2Weatherford Technology Holdings, LLC
- Gravel pack service tool back pressure valve16 Jun 2026US 12,655,726 B2Halliburton Energy Services.Inc.
- Compositions and methods for use of proppant surface chemistry to improve proppant consolidation and flowback control26 May 2026US 12,637,935 B2Carbo Ceramics Inc.
- High temperature gravel packing fluid system19 May 2026US 12,630,757 B1Schlumberger Technology Corporation
- Compositions and methods for use of proppant surface chemistry to improve proppant consolidation and flowback control24 Sep 2026US 2026/0286824 A1Carbo Ceramics Inc.
- High temperature gravel packing fluid system17 Sep 2026US 2026/0275185 A1Schlumberger Technology Corporation
- Method for designing construction parameters of nitrogen foam-carried gravel packing in high-loss horizontal wells20 Aug 2026US 2026/0244803 A1China University of Petroleum (East China)
- System and method for drilling slant wells18 Jun 2026US 2026/0168214 A1
- Downhole shunt tube isolation valve system11 Jun 2026US 2026/0160149 A1Halliburton Energy Services.Inc.
Most cited
By later US patents
- Control of particulate flowback in subterranean wells341US 5,833,000 AHalliburton Energy Services.Inc. · 1998
- Control of fine particulate flowback in subterranean wells335US 5,853,048 AHalliburton Energy Services, Inc. · 1998
- Deformable well screen320US 5,901,789 AShell Oil Company · 1999
- Control of particulate flowback in subterranean wells303US 6,047,772 AHalliburton Energy Services.Inc. · 2000
- Control of fine particulate flowback in subterranean wells260US 5,775,425 AHalliburton Energy Services, Inc. · 1998