E21B 33/0353
Horizontal or spool trees, i.e. without production valves in the vertical main
Official title: {Horizontal or spool trees, i.e. without production valves in the vertical main bore}
E21B33/0353 (Horizontal or spool trees, i.e. without production valves in the vertical main) appears on 180 US grants and 158 published applications in this corpus.
Search patents in E21B- Granted patents
- 180
- Published applications
- 158
- Assignees
- 54
- Inventors
- 213
- Latest grant
- 11 Mar 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1986 | 1 | 0 |
| 1987 | 2 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 2 | 0 |
| 1995 | 1 | 0 |
| 1996 | 3 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 10 | 0 |
| 2000 | 8 | 0 |
| 2001 | 4 | 7 |
| 2002 | 8 | 9 |
| 2003 | 10 | 14 |
| 2004 | 13 | 15 |
| 2005 | 7 | 8 |
| 2006 | 11 | 5 |
| 2007 | 2 | 4 |
| 2008 | 5 | 4 |
| 2009 | 3 | 8 |
| 2010 | 3 | 14 |
| 2011 | 6 | 9 |
| 2012 | 11 | 9 |
| 2013 | 11 | 3 |
| 2014 | 11 | 10 |
| 2015 | 3 | 5 |
| 2016 | 9 | 6 |
| 2017 | 7 | 9 |
| 2018 | 9 | 4 |
| 2019 | 5 | 2 |
| 2020 | 4 | 1 |
| 2021 | 2 | 1 |
| 2022 | 1 | 3 |
| 2023 | 2 | 3 |
| 2024 | 5 | 2 |
| 2025 | 1 | 0 |
| 2026 | 0 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Rotating indexing coupling (RIC) assembly for installation and orientation of a subsea production tree11 Mar 2025US 12,247,453 B2FMC Technologies, Inc.
- Modular valve tree27 Aug 2024US 12,071,827 B2FMC Technologies, Inc.
- Crown plug securement system30 Jul 2024US 12,049,796 B2Plexus Holdings, PLC.
- Method and apparatus for aligning a subsea tubing hanger16 Jul 2024US 12,037,866 B2ConocoPhillips Company
- Kit and method for modification of a horizontal valve tree2 Jul 2024US 12,024,968 B2CCB Subsea AS
- Vertical isolation and flow tree systems and methods18 Jun 2026US 2026/0168346 A1Baker Hughes Oilfield Operations LLC
- Vertical isolation and flow tree systems and methods18 Jun 2026US 2026/0168347 A1Baker Hughes Oilfield Operations LLC
- System for Preventive Inhibition of Scaling in Oil Wells and Process for Preventive Inhibition of Scaling in Oil Wells21 May 2026US 2026/0139570 A1Petroleo Brasileiro S.A. - Petrobras
- Rotating indexing coupling (ric) assembly for installation and orientation of a subsea production tree14 Mar 2024US 2024/0084660 A1FMC Technologies, Inc.
- Kit and method for modification of a horizontal valve tree18 Jan 2024US 2024/0018840 A1CCB Subsea AS
Most cited
By later US patents
- Wellhead138US 5,544,707 ACooper Cameron Corporation · 1996
- Static wellhead plug and associated methods of plugging wellheads119US 5,875,851 AHalliburton Energy Services.Inc. · 1999
- Lightweight intervention system100US 6,053,252 AExpro North Sea Limited · 2000
- Rotatable ball valve apparatus and method98US 4,681,133 AHydril Company · 1987
- Rotatable ball valve apparatus and method82US 4,703,807 AHydril Company · 1987