E21B 33/072
For cable-operated tools
Official title: for cable-operated tools (E21B33/076 takes precedence)
E21B33/072 (For cable-operated tools) appears on 258 US grants and 178 published applications in this corpus.
Search patents in E21B- Granted patents
- 258
- Published applications
- 178
- Assignees
- 117
- Inventors
- 457
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 3 | 0 |
| 1978 | 6 | 0 |
| 1979 | 0 | 0 |
| 1980 | 2 | 0 |
| 1981 | 5 | 0 |
| 1982 | 2 | 0 |
| 1983 | 4 | 0 |
| 1984 | 4 | 0 |
| 1985 | 3 | 0 |
| 1986 | 3 | 0 |
| 1987 | 3 | 0 |
| 1988 | 2 | 0 |
| 1989 | 7 | 0 |
| 1990 | 9 | 0 |
| 1991 | 1 | 0 |
| 1992 | 5 | 0 |
| 1993 | 3 | 0 |
| 1994 | 1 | 0 |
| 1995 | 2 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 4 | 0 |
| 1999 | 3 | 0 |
| 2000 | 4 | 0 |
| 2001 | 3 | 0 |
| 2002 | 2 | 1 |
| 2003 | 5 | 6 |
| 2004 | 3 | 4 |
| 2005 | 2 | 1 |
| 2006 | 3 | 1 |
| 2007 | 2 | 4 |
| 2008 | 7 | 6 |
| 2009 | 3 | 4 |
| 2010 | 2 | 7 |
| 2011 | 6 | 12 |
| 2012 | 6 | 4 |
| 2013 | 7 | 17 |
| 2014 | 9 | 9 |
| 2015 | 10 | 8 |
| 2016 | 11 | 11 |
| 2017 | 6 | 7 |
| 2018 | 6 | 10 |
| 2019 | 8 | 7 |
| 2020 | 18 | 17 |
| 2021 | 16 | 9 |
| 2022 | 10 | 3 |
| 2023 | 4 | 11 |
| 2024 | 12 | 10 |
| 2025 | 11 | 7 |
| 2026 | 7 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Hydraulic actuated tool catcher25 Aug 2026US 12,716,329 B2Schlumberger Technology Corporation
- Wireline derrick, system, and process4 Aug 2026US 12,698,691 B2
- Subsea well intervention systems and methods10 Mar 2026US 12,571,279 B1Halliburton Energy Services.Inc.
- Cable suspending and recovery device and method for use with tools deployed in subsurface wells24 Feb 2026US 12,560,039 B2Schlumberger Technology Corporation
- Subsea well intervention systems and methods24 Feb 2026US 12,560,045 B1Halliburton Energy Services.Inc.
- Hydraulic actuated tool catcher4 Jun 2026US 2026/0153012 A1Schlumberger Technology Corporation
- Pressure Control System for Fracking Operations21 May 2026US 2026/0139562 A1FMC Technologies, Inc.
- Re-start of well after a well kill operation11 Sep 2025US 2025/0283396 A1Saudi Arabian Oil Company
- Convertible slickline stuffing box21 Aug 2025US 2025/0263999 A1Schlumberger Technology Corporation
- Convertible slickline stuffing box14 Aug 2025US 2025/0257627 A1Schlumberger Technology Corporation
Most cited
By later US patents
- Method for running downhole tools and devices with coiled tubing276US 5,435,395 AHalliburton Company · 1995
- Deployment/retrieval method and apparatus for well tools used with coiled tubing162US 4,940,095 ADowell Schlumberger Incorporated · 1990
- Straight line, pump through entry sub92US 6,202,764 B12001
- Well entry tool80US 5,803,191 A1998
- Top entry sub arrangement79US 5,284,210 A1994