E21B 33/00
Sealing or packing boreholes or wells
E21B33/00 (Sealing or packing boreholes or wells) appears on 16,570 US grants and 14,786 published applications in this corpus.
Search patents in E21B- Granted patents
- 16,570
- Published applications
- 14,786
- Assignees
- 2,885
- Inventors
- 18,052
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 90 | 0 |
| 1977 | 93 | 0 |
| 1978 | 101 | 0 |
| 1979 | 75 | 0 |
| 1980 | 99 | 0 |
| 1981 | 128 | 0 |
| 1982 | 117 | 0 |
| 1983 | 159 | 0 |
| 1984 | 203 | 0 |
| 1985 | 160 | 0 |
| 1986 | 160 | 0 |
| 1987 | 189 | 0 |
| 1988 | 126 | 0 |
| 1989 | 181 | 0 |
| 1990 | 177 | 0 |
| 1991 | 153 | 0 |
| 1992 | 167 | 0 |
| 1993 | 183 | 0 |
| 1994 | 210 | 0 |
| 1995 | 161 | 0 |
| 1996 | 133 | 0 |
| 1997 | 118 | 0 |
| 1998 | 172 | 0 |
| 1999 | 159 | 0 |
| 2000 | 166 | 0 |
| 2001 | 202 | 51 |
| 2002 | 183 | 197 |
| 2003 | 205 | 255 |
| 2004 | 186 | 307 |
| 2005 | 160 | 276 |
| 2006 | 245 | 239 |
| 2007 | 217 | 256 |
| 2008 | 206 | 359 |
| 2009 | 203 | 379 |
| 2010 | 307 | 458 |
| 2011 | 243 | 500 |
| 2012 | 334 | 537 |
| 2013 | 398 | 683 |
| 2014 | 471 | 767 |
| 2015 | 616 | 856 |
| 2016 | 654 | 1003 |
| 2017 | 733 | 969 |
| 2018 | 860 | 1054 |
| 2019 | 1047 | 915 |
| 2020 | 967 | 878 |
| 2021 | 924 | 893 |
| 2022 | 849 | 721 |
| 2023 | 765 | 693 |
| 2024 | 746 | 657 |
| 2025 | 731 | 538 |
| 2026 | 438 | 345 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Methods of treating unconsolidated sand formations using a red mud sealant composition6 Oct 2026US 12,753,339 B2Saudi Arabian Oil Company
- Systems and methods of deploying a wiper plug in a downhole tubular string6 Oct 2026US 12,753,670 B1Halliburton Energy Services.Inc.
- Retrievable packer element—anti extrusion barrier6 Oct 2026US 12,753,671 B2Expro North Sea Limited
- Garter spring including spacer elements6 Oct 2026US 12,753,672 B2Halliburton Energy Services.Inc.
- Systems and methods for attached-anchored casing stub repair6 Oct 2026US 12,753,678 B2Saudi Arabian Oil Company
- Apparatus utilizing shape-memory and self-assembly to plug relatively wide remote fractures8 Oct 2026US 2026/0308440 A1The Penn State Research Foundation
- Formation Maintenance Fluids with Flowback Enhancers to Improve Wellbore Operations8 Oct 2026US 2026/0308442 A1Baker Hughes Oilfield Operations LLC
- Improvements in or Relating to Well Abandonment8 Oct 2026US 2026/0308995 A1
- Space-Out Mechanism for a Tubing Hanger and a Tree8 Oct 2026US 2026/0308996 A1Innovex International, Inc.
- Electric annular with internal motor8 Oct 2026US 2026/0308997 A1Schlumberger Technology Corporation
Most cited
By later US patents
- Stormwater filter assembly483US 8,110,099 B2Contech Stormwater Solutions Inc. · 2012
- Insulated and/or concentric coiled tubing429US 6,015,015 ABJ Services Company, U.S.A. · 2000
- Method and apparatus for sealing the juncture between a vertical well and one or more horizontal wells using deformable sealing means361US 5,388,648 ABaker Hughes Incorporated · 1995
- Compositions and methods for cementing using elastic particles353US 6,508,305 B1BJ Services Company · 2003
- Downhole surge pressure reduction system and method of use340US 5,960,881 AJerry P. Allamon · 1999