E21B 29/04
Cutting of wire lines or the like
Official title: Cutting of wire lines or the like (E21B29/02 takes precedence)
E21B29/04 (Cutting of wire lines or the like) appears on 148 US grants and 107 published applications in this corpus.
Search patents in E21B- Granted patents
- 148
- Published applications
- 107
- Assignees
- 72
- Inventors
- 228
- Latest grant
- 30 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 2 | 0 |
| 1980 | 2 | 0 |
| 1981 | 2 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 2 | 0 |
| 1986 | 2 | 0 |
| 1987 | 8 | 0 |
| 1988 | 1 | 0 |
| 1989 | 3 | 0 |
| 1990 | 2 | 0 |
| 1991 | 2 | 0 |
| 1992 | 0 | 0 |
| 1993 | 2 | 0 |
| 1994 | 2 | 0 |
| 1995 | 0 | 0 |
| 1996 | 2 | 0 |
| 1997 | 0 | 0 |
| 1998 | 2 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 1 |
| 2002 | 1 | 3 |
| 2003 | 4 | 1 |
| 2004 | 3 | 2 |
| 2005 | 0 | 3 |
| 2006 | 4 | 1 |
| 2007 | 1 | 1 |
| 2008 | 2 | 3 |
| 2009 | 1 | 0 |
| 2010 | 2 | 8 |
| 2011 | 5 | 4 |
| 2012 | 5 | 2 |
| 2013 | 6 | 5 |
| 2014 | 3 | 12 |
| 2015 | 5 | 12 |
| 2016 | 7 | 9 |
| 2017 | 4 | 4 |
| 2018 | 8 | 1 |
| 2019 | 8 | 4 |
| 2020 | 4 | 1 |
| 2021 | 4 | 8 |
| 2022 | 5 | 4 |
| 2023 | 6 | 7 |
| 2024 | 6 | 5 |
| 2025 | 8 | 5 |
| 2026 | 5 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Mechanical release tool for downhole wireline30 Jun 2026US 12,669,026 B2
- Wireline release head16 Jun 2026US 12,655,705 B1Reach Wireline, LLC
- Mechanically locked actuator system and method21 Apr 2026US 12,607,277 B2Baker Hughes Pressure Control LLC
- Cable suspending and recovery device and method for use with tools deployed in subsurface wells24 Feb 2026US 12,560,039 B2Schlumberger Technology Corporation
- Well intervention tool and method for clearing tubes and lines20 Jan 2026US 12,529,276 B2Axter
- Device, system and method for removal of cable clamps from a pipe string30 Jul 2026US 2026/0218581 A1Odfjell Technology Invest Ltd
- Well abandonment and severance of control lines13 Nov 2025US 2025/0347190 A1Halliburton Energy Services.Inc.
- Mechanically locked actuator system and method26 Jun 2025US 2025/0207685 A1Baker Hughes Oilfield Operations LLC
- Cable suspending and recovery device and method for use with tools deployed in subsurface wells22 May 2025US 2025/0163786 A1Schlumberger Technology Corporation
- Method and system for cutting hydraulic and/or electric lines in the annular space of a well15 May 2025US 2025/0154841 A1Schlumberger Technology Corporation
Most cited
By later US patents
- Rotatable ball valve apparatus and method98US 4,681,133 AHydril Company · 1987
- Downhole safety valve for subterranean well and method98US 4,944,351 ABaker Hughes Incorporated · 1990
- Rotatable ball valve apparatus and method82US 4,703,807 AHydril Company · 1987
- Severing of downhole tubing with associated cable79US 8,020,619 B1Robertson Intellectual Properties, LLC · 2011
- Oil field cable abrading system71US 4,817,725 AC. "Jerry" Wattigny, a part interest · 1989