E21B 40/00
Tubing catchers, automatically arresting the fall of oil-well tubing
Official title: Tubing catchers, automatically arresting the fall of oil-well tubing {(preventing small objects from falling into the borehole E21B41/0021)}
E21B40/00 (Tubing catchers, automatically arresting the fall of oil-well tubing) appears on 48 US grants and 38 published applications in this corpus.
Search patents in E21B- Granted patents
- 48
- Published applications
- 38
- Assignees
- 34
- Inventors
- 100
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 2 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 1 |
| 2004 | 1 | 1 |
| 2005 | 0 | 1 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 1 |
| 2009 | 2 | 1 |
| 2010 | 0 | 0 |
| 2011 | 3 | 2 |
| 2012 | 0 | 1 |
| 2013 | 0 | 3 |
| 2014 | 0 | 0 |
| 2015 | 4 | 2 |
| 2016 | 0 | 2 |
| 2017 | 1 | 3 |
| 2018 | 4 | 2 |
| 2019 | 1 | 2 |
| 2020 | 3 | 1 |
| 2021 | 5 | 2 |
| 2022 | 1 | 3 |
| 2023 | 5 | 4 |
| 2024 | 4 | 2 |
| 2025 | 3 | 2 |
| 2026 | 4 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Hydraulic actuated tool catcher25 Aug 2026US 12,716,329 B2Schlumberger Technology Corporation
- Downhole line retention with axial flow11 Aug 2026US 12,704,043 B1Halliburton Energy Services.Inc.
- Downhole tool safety catch21 Jul 2026US 12,687,089 B1Turbo Drill Industries, Inc.
- Wireline-set plug apparatus operable for holding pressure or as an ESP catcher31 Mar 2026US 12,590,507 B1Target Completions, LLC
- Well tubing anchor and catcher tool assembly14 Oct 2025US 12,442,262 B1PetroTool International LLC
- Hydraulic actuated tool catcher4 Jun 2026US 2026/0153012 A1Schlumberger Technology Corporation
- Tubing Anchor and Catcher Tool with Fluid-Enhanced Cone for Increased Fluid Flow1 Jan 2026US 2026/0002420 A1
- Internal slip including one or more symmetrical teeth27 Nov 2025US 2025/0361781 A1Halliburton Energy Services.Inc.
- Well Tubing Anchor and Catcher Tool Assembly2 Oct 2025US 2025/0305379 A1PetroTool International LLC
- Sock for a floating vessel13 Jun 2024US 2024/0191603 A1Zentech, Inc.
Most cited
By later US patents
- Pump catcher apparatus39US 4,317,485 ABaker International Corporation · 1982
- Braking devices for use in drilling operations20US 7,967,085 B2Longyear TM, Inc. · 2011
- Noise, vibration and erosion reduction in valves16US 10,989,021 B1Halliburton Energy Services.Inc. · 2021
- Downhole well tool14US 4,542,788 A1985
- Down-hole decelerators13US 5,183,113 ABaroid Technology, Inc. · 1993