E21B 34/16
Control means therefor being outside the borehole
Official title: Control means therefor being outside the borehole {(control systems for submerged well heads E21B33/0355)}
E21B34/16 (Control means therefor being outside the borehole) appears on 763 US grants and 648 published applications in this corpus.
Search patents in E21B- Granted patents
- 763
- Published applications
- 648
- Assignees
- 263
- Inventors
- 1,308
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 9 | 0 |
| 1977 | 12 | 0 |
| 1978 | 12 | 0 |
| 1979 | 7 | 0 |
| 1980 | 9 | 0 |
| 1981 | 6 | 0 |
| 1982 | 11 | 0 |
| 1983 | 11 | 0 |
| 1984 | 6 | 0 |
| 1985 | 6 | 0 |
| 1986 | 5 | 0 |
| 1987 | 9 | 0 |
| 1988 | 4 | 0 |
| 1989 | 10 | 0 |
| 1990 | 6 | 0 |
| 1991 | 5 | 0 |
| 1992 | 6 | 0 |
| 1993 | 8 | 0 |
| 1994 | 7 | 0 |
| 1995 | 6 | 0 |
| 1996 | 5 | 0 |
| 1997 | 2 | 0 |
| 1998 | 4 | 0 |
| 1999 | 11 | 0 |
| 2000 | 9 | 0 |
| 2001 | 12 | 3 |
| 2002 | 11 | 18 |
| 2003 | 12 | 16 |
| 2004 | 10 | 12 |
| 2005 | 9 | 7 |
| 2006 | 11 | 7 |
| 2007 | 10 | 4 |
| 2008 | 2 | 8 |
| 2009 | 5 | 11 |
| 2010 | 5 | 10 |
| 2011 | 3 | 8 |
| 2012 | 5 | 7 |
| 2013 | 12 | 20 |
| 2014 | 9 | 20 |
| 2015 | 18 | 51 |
| 2016 | 23 | 30 |
| 2017 | 40 | 39 |
| 2018 | 41 | 46 |
| 2019 | 44 | 42 |
| 2020 | 42 | 62 |
| 2021 | 50 | 54 |
| 2022 | 53 | 44 |
| 2023 | 51 | 45 |
| 2024 | 43 | 36 |
| 2025 | 35 | 30 |
| 2026 | 21 | 18 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Actuation cylinder for inside blow-out preventer valve22 Sep 2026US 12,742,367 B2Patterson-UTI Drilling Company LLC
- Apparatus, system, and process for remote well control8 Sep 2026US 12,729,604 B2Sentry Frac Services, LLC
- Permanent, compact, online monitoring and controlled automation system25 Aug 2026US 12,716,547 B2Saudi Arabian Oil Company
- Energy delivery system for supplying hydraulic pressure for severing an intervention medium11 Aug 2026US 12,704,042 B2Halliburton Energy Services.Inc.
- Subsea actuation system with retrievable position indicator4 Aug 2026US 12,698,689 B2TechnipFMC Norge AS
- Method for oil and gas well production management using gradient metering1 Oct 2026US 2026/0298074 A1Schlumberger Technology Corporation
- Compartmentalized Hydraulic Fracturing System17 Sep 2026US 2026/0275843 A1Typhon Technology Solutions (U.S.), LLC
- Dynamic multi-flowline control system for downhole tools17 Sep 2026US 2026/0275864 A1Schlumberger Technology Corporation
- Sleeve assemblies and related completion systems and methods27 Aug 2026US 2026/0251036 A1Kobold Corporation
- Pulsed magnetic field telemetry to communicate with a downhole inflow valve20 Aug 2026US 2026/0243162 A1Halliburton Energy Services.Inc.
Most cited
By later US patents
- Petroleum well having downhole sensors, communication and power268US 6,679,332 B2Shell Oil Company · 2004
- Permanent downhole, wireless, two-way telemetry backbone using redundant repeaters221US 6,958,704 B2Shell Oil Company · 2005
- Controllable gas-lift well and valve202US 6,715,550 B2Shell Oil Company · 2004
- Subsea hydraulic choke193US 4,046,191 AExxon Production Research Company · 1977
- Surface controlled reservoir analysis and management system178US 5,547,029 A1996