E21B 17/203
With plural fluid passages
Official title: {with plural fluid passages}
E21B17/203 (With plural fluid passages) appears on 124 US grants and 99 published applications in this corpus.
Search patents in E21B- Granted patents
- 124
- Published applications
- 99
- Assignees
- 69
- Inventors
- 231
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 2 | 0 |
| 1985 | 2 | 0 |
| 1986 | 2 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 5 | 0 |
| 1990 | 4 | 0 |
| 1991 | 0 | 0 |
| 1992 | 3 | 0 |
| 1993 | 2 | 0 |
| 1994 | 4 | 0 |
| 1995 | 2 | 0 |
| 1996 | 5 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 3 | 0 |
| 2001 | 6 | 2 |
| 2002 | 4 | 5 |
| 2003 | 6 | 9 |
| 2004 | 4 | 5 |
| 2005 | 4 | 5 |
| 2006 | 5 | 3 |
| 2007 | 1 | 4 |
| 2008 | 1 | 2 |
| 2009 | 2 | 0 |
| 2010 | 5 | 6 |
| 2011 | 1 | 3 |
| 2012 | 2 | 4 |
| 2013 | 5 | 7 |
| 2014 | 2 | 6 |
| 2015 | 3 | 5 |
| 2016 | 3 | 3 |
| 2017 | 2 | 2 |
| 2018 | 3 | 0 |
| 2019 | 2 | 6 |
| 2020 | 2 | 6 |
| 2021 | 5 | 3 |
| 2022 | 1 | 4 |
| 2023 | 3 | 1 |
| 2024 | 2 | 1 |
| 2025 | 4 | 4 |
| 2026 | 2 | 3 |
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.
- Methods for preventing corrosion in flexible pipe with passivating agents5 May 2026US 12,618,309 B1Chevron Oronite Company LLC
- Method of making a fluid conduit30 Dec 2025US 12,508,638 B2Subsea 7 Limited
- Coiled tubing2 Dec 2025US 12,486,726 B2Coilcom AS
- Coiled tubing tool flow tube architecture12 Aug 2025US 12,385,331 B2Schlumberger Technology Corporation
- Drilling in hot zones with a multiple tubing drill string8 Oct 2026US 2026/0309003 A1Eavor Technologies Inc.
- Composite umbilical for pulse power boring system16 Jul 2026US 2026/0201753 A1Halliburton Energy Services.Inc.
- Cryogenic coolant flow management for downhole superconducting cable5 Feb 2026US 2026/0036020 A1Halliburton Energy Services.Inc.
- Subsea Umbilicals8 May 2025US 2025/0146368 A1
- Pulsed-Power Drilling System with Integrated Power and Communication Coiled Tubing Conveyance13 Mar 2025US 2025/0084706 A1Halliburton Energy Services.Inc.
Most cited
By later US patents
- Insulated and/or concentric coiled tubing429US 6,015,015 ABJ Services Company, U.S.A. · 2000
- Process of electric pipeline heating utilizing heating elements inserted in pipelines288US 5,182,792 APetroleo Brasileiro S.A. - Petrobras · 1993
- Method and apparatus for stimulation of multiple formation intervals249US 6,394,184 B2ExxonMobil Upstream Research Company · 2002
- Down-hole drilling apparatus209US 4,463,814 AAdvanced Drilling Corporation · 1984
- Coil tubing string and downhole generator209US 5,285,204 AConoco Inc. · 1994