E21B 17/18
Pipes provided with plural fluid passages
Official title: Pipes provided with plural fluid passages {(E21B17/203 takes precedence)}
E21B17/18 (Pipes provided with plural fluid passages) appears on 510 US grants and 464 published applications in this corpus.
Search patents in E21B- Granted patents
- 510
- Published applications
- 464
- Assignees
- 216
- Inventors
- 895
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 1 | 0 |
| 1978 | 7 | 0 |
| 1979 | 4 | 0 |
| 1980 | 5 | 0 |
| 1981 | 5 | 0 |
| 1982 | 3 | 0 |
| 1983 | 4 | 0 |
| 1984 | 3 | 0 |
| 1985 | 5 | 0 |
| 1986 | 2 | 0 |
| 1987 | 7 | 0 |
| 1988 | 2 | 0 |
| 1989 | 6 | 0 |
| 1990 | 5 | 0 |
| 1991 | 8 | 0 |
| 1992 | 5 | 0 |
| 1993 | 7 | 0 |
| 1994 | 3 | 0 |
| 1995 | 8 | 0 |
| 1996 | 2 | 0 |
| 1997 | 1 | 0 |
| 1998 | 3 | 0 |
| 1999 | 8 | 0 |
| 2000 | 1 | 0 |
| 2001 | 6 | 1 |
| 2002 | 8 | 2 |
| 2003 | 3 | 9 |
| 2004 | 6 | 14 |
| 2005 | 5 | 9 |
| 2006 | 12 | 14 |
| 2007 | 9 | 13 |
| 2008 | 12 | 7 |
| 2009 | 7 | 16 |
| 2010 | 7 | 7 |
| 2011 | 9 | 16 |
| 2012 | 7 | 15 |
| 2013 | 9 | 31 |
| 2014 | 16 | 25 |
| 2015 | 14 | 48 |
| 2016 | 35 | 27 |
| 2017 | 23 | 23 |
| 2018 | 31 | 22 |
| 2019 | 28 | 20 |
| 2020 | 26 | 30 |
| 2021 | 36 | 35 |
| 2022 | 27 | 26 |
| 2023 | 25 | 21 |
| 2024 | 18 | 15 |
| 2025 | 15 | 10 |
| 2026 | 9 | 8 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Composite umbilical for pulse power boring system25 Aug 2026US 12,716,297 B2Halliburton Energy Services.Inc.
- Water-jet ice core drilling rig16 Jun 2026US 12,655,703 B2Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences
- Manufacturing methods for dual concentric tubing19 May 2026US 12,631,072 B2Ducon—Becker Service Technology, LLC
- Method and device for horizontal bore mining5 May 2026US 12,618,308 B2Iluka Resources Limited
- Drilling assembly14 Apr 2026US 12,601,223 B2BAUER Spezialtiefbau GmbH
- Bypass tool for use with a tubing anchor23 Jul 2026US 2026/0210203 A1Endurance Lift Solutions, LLC
- Composite umbilical for pulse power boring system16 Jul 2026US 2026/0201753 A1Halliburton Energy Services.Inc.
- System and method for enhanced geothermal energy extraction16 Jul 2026US 2026/0201783 A1Hunt Energy, L.L.C.
- Water-jet ice core drilling rig11 Jun 2026US 2026/0160141 A1Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences
- Methods and systems associated with extended fluid distribution with a line that bypasses pumping units21 May 2026US 2026/0139555 A1Commando Pressure Control, Inc.
Most cited
By later US patents
- Thermal mineral extraction system294US 5,285,846 AFramo Developments (UK) Limited · 1994
- Reverse circulation directional and horizontal drilling using concentric drill string161US 7,204,327 B2Presssol Ltd. · 2007
- Well completion system142US 5,447,201 AFramo Developments (UK) Limited · 1995
- Procedure and production pipe for production of oil or gas from an oil or gas reservoir127US 5,435,393 ANorsk Hydro A/S · 1995
- Drilling system122US 5,060,737 AFramo Developments (UK) Limited · 1991