E21B 43/101
For underwater installations
Official title: {for underwater installations}
E21B43/101 (For underwater installations) appears on 46 US grants and 48 published applications in this corpus.
Search patents in E21B- Granted patents
- 46
- Published applications
- 48
- Assignees
- 33
- Inventors
- 116
- Latest grant
- 21 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 2 |
| 2004 | 0 | 0 |
| 2005 | 1 | 2 |
| 2006 | 0 | 3 |
| 2007 | 0 | 1 |
| 2008 | 3 | 0 |
| 2009 | 2 | 1 |
| 2010 | 1 | 3 |
| 2011 | 0 | 2 |
| 2012 | 0 | 2 |
| 2013 | 2 | 3 |
| 2014 | 1 | 2 |
| 2015 | 3 | 3 |
| 2016 | 3 | 3 |
| 2017 | 7 | 4 |
| 2018 | 2 | 5 |
| 2019 | 5 | 2 |
| 2020 | 1 | 0 |
| 2021 | 2 | 2 |
| 2022 | 1 | 0 |
| 2023 | 4 | 6 |
| 2024 | 2 | 2 |
| 2025 | 3 | 0 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Downhole apparatus and methods21 Apr 2026US 12,607,101 B2Expro North Sea Limited
- Geothermal power from superhot geothermal fluid and magma reservoirs10 Jun 2025US 12,326,278 B2EnhancedGEO Holdings, LLC
- Control/monitoring of initial construction of subsea wells6 May 2025US 12,291,931 B2Innovex International, Inc.
- Systems and methods for wellbore liner installation under managed pressure conditions7 Jan 2025US 12,188,336 B2BP Corporation North America Inc.
- Subsea casing hanger running tool with anti-rotation feature and method for rotating casing into complex and deviated wellbores6 Aug 2024US 12,055,006 B2Baker Hughes Oilfield Operations LLC
- Downhole apparatus and methods9 May 2024US 2024/0151122 A1Deltatek Oil Tools Limited
- Control/Monitoring of Initial Construction of Subsea Wells8 Feb 2024US 2024/0044218 A1Dril-Quip, Inc.
- Geothermal power from superhot geothermal fluid and magma reservoirs28 Sep 2023US 2023/0304705 A1EnhancedGEO Holdings, LLC
- Geothermal power from superhot geothermal fluid and magma reservoirs31 Aug 2023US 2023/0272946 A1EnhancedGEO Holdings, LLC
- Geothermal power from superhot geothermal fluid and magma reservoirs31 Aug 2023US 2023/0272947 A1EnhancedGEO Holdings, LLC
Most cited
By later US patents
- Method for installing a well casing into a subsea well being drilled with a dual density drilling system57US 6,328,107 B1ExxonMobil Upstream Research Company · 2001
- Internal riser tensioning system51US 5,944,111 AABB Vetco Gray Inc. · 1999
- Tubing running equipment for offshore rig with surface blowout preventer22US 7,318,480 B2Vetco Gray Inc. · 2008
- Tubing running equipment for offshore rig with surface blowout preventer22US 7,513,308 B2Vetco Gray Inc. · 2009
- Method and apparatus of suspending, completing and working over a well16US 7,380,609 B2Woodside Energy Limited · 2008