E21B 43/105
Expanding tools specially adapted therefor
Official title: {Expanding tools specially adapted therefor}
E21B43/105 (Expanding tools specially adapted therefor) appears on 669 US grants and 748 published applications in this corpus.
Search patents in E21B- Granted patents
- 669
- Published applications
- 748
- Assignees
- 106
- Inventors
- 724
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 0 | 0 |
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 2 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 2 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 4 | 0 |
| 1999 | 2 | 0 |
| 2000 | 12 | 0 |
| 2001 | 6 | 5 |
| 2002 | 17 | 54 |
| 2003 | 27 | 55 |
| 2004 | 48 | 82 |
| 2005 | 24 | 65 |
| 2006 | 65 | 43 |
| 2007 | 54 | 42 |
| 2008 | 41 | 35 |
| 2009 | 26 | 25 |
| 2010 | 24 | 27 |
| 2011 | 21 | 23 |
| 2012 | 19 | 30 |
| 2013 | 20 | 24 |
| 2014 | 19 | 22 |
| 2015 | 28 | 17 |
| 2016 | 15 | 21 |
| 2017 | 17 | 20 |
| 2018 | 17 | 27 |
| 2019 | 19 | 21 |
| 2020 | 35 | 20 |
| 2021 | 17 | 25 |
| 2022 | 26 | 15 |
| 2023 | 18 | 15 |
| 2024 | 10 | 11 |
| 2025 | 15 | 14 |
| 2026 | 8 | 10 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Method of creating an annular zonal isolation seal in a downhole annulus6 Oct 2026US 12,753,679 B2Shell USA, Inc.
- System for restoring the mechanical integrity of small-diameter casing or production tubing in hydrocarbon reservoir wells6 Oct 2026US 12,753,680 B2Instituto Mexicano Del Petroleo
- Enhanced expandable liner hanger support mechanism16 Jun 2026US 12,655,728 B2Halliburton Energy Services.Inc.
- Mechanical support for expandable liner hanger28 Apr 2026US 12,612,843 B2Halliburton Energy Services.Inc.
- Electric submersible pump (ESP) seal unit3 Mar 2026US 12,565,819 B2ExxonMobil Technology and Engineering Company
- Bi-directional Running Tool for Expandable Liner Hanger8 Oct 2026US 2026/0309007 A1Halliburton Energy Services.Inc.
- Liner hanger setting tool including a split ring cone, a well system and a method1 Oct 2026US 2026/0298052 A1Halliburton Energy Services.Inc.
- Liner hanger setting tool including first and second cone assembly portions, a well system and a method1 Oct 2026US 2026/0298053 A1Halliburton Energy Services.Inc.
- Liner hanger setting tool including a spiral split ring cone, a well system and a method1 Oct 2026US 2026/0298054 A1Halliburton Energy Services.Inc.
- Dual tubular expandable liner hanger4 Jun 2026US 2026/0153015 A1Halliburton Energy Services.Inc.
Most cited
By later US patents
- Method of creating a wellbore in an underground formation356US 5,348,095 AShell Oil Company · 1994
- Method and apparatus for hanging tubulars in wells321US 6,098,717 AFormlock, Inc. · 2000
- Tools and methods for use with expandable tubulars320US 6,325,148 B1Weatherford/Lamb, Inc. · 2001
- Procedures and equipment for profiling and jointing of pipes319US 6,457,532 B1Weatherford/Lamb, Inc. · 2002
- Downhole pipe expansion apparatus and method258US 6,021,850 ABaker Hughes Incorporated · 2000