E21B 17/041
Specially adapted for coiled tubing
Official title: {specially adapted for coiled tubing}
E21B17/041 (Specially adapted for coiled tubing) appears on 56 US grants and 57 published applications in this corpus.
Search patents in E21B- Granted patents
- 56
- Published applications
- 57
- Assignees
- 37
- Inventors
- 152
- Latest grant
- 4 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 2 | 0 |
| 1994 | 2 | 0 |
| 1995 | 2 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 2 | 0 |
| 2001 | 3 | 0 |
| 2002 | 3 | 1 |
| 2003 | 1 | 1 |
| 2004 | 1 | 3 |
| 2005 | 0 | 2 |
| 2006 | 1 | 3 |
| 2007 | 1 | 2 |
| 2008 | 0 | 3 |
| 2009 | 3 | 1 |
| 2010 | 3 | 1 |
| 2011 | 1 | 2 |
| 2012 | 1 | 0 |
| 2013 | 2 | 2 |
| 2014 | 0 | 3 |
| 2015 | 0 | 1 |
| 2016 | 0 | 0 |
| 2017 | 1 | 1 |
| 2018 | 2 | 3 |
| 2019 | 2 | 4 |
| 2020 | 2 | 3 |
| 2021 | 2 | 6 |
| 2022 | 4 | 3 |
| 2023 | 5 | 3 |
| 2024 | 1 | 3 |
| 2025 | 1 | 4 |
| 2026 | 4 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Coiled tubing weld-on connector4 Aug 2026US 12,698,681 B2National Oilwell Varco, L. P.
- Flexible connector for joining a coiled tubing and a bottom hole assembly10 Mar 2026US 12,571,266 B2Ram Welding, Inc.
- Apparatus to connect cables inside coiled tubing and connect coiled tubing3 Mar 2026US 12,565,813 B2Halliburton Energy Services.Inc.
- Flow rate pressure control during mill-out operations24 Feb 2026US 12,560,035 B2Schlumberger Technology Corporation
- Whipstock integrated to completion string for coiled tubing operations27 May 2025US 12,312,890 B2Saudi Arabian Oil Company
- Spoolable connector assemblies for connecting separate coiled tubing strings at a wellsite24 Sep 2026US 2026/0286785 A1Grant Prideco, L.P.
- Systems and methods for connecting separate coiled tubing strings at a wellsite18 Jun 2026US 2026/0168335 A1Grant Prideco, L.P.
- Apparatus to Connect Cables Inside Coiled Tubing and Connect Coiled Tubing25 Dec 2025US 2025/0389160 A1Halliburton Energy Services.Inc.
- Pipe support21 Aug 2025US 2025/0264166 A1Polyflow LLC
- Flow rate pressure control during mill-out operations16 Jan 2025US 2025/0020032 A1Schlumberger Technology Corporation
Most cited
By later US patents
- Internal coiled tubing connector127US 5,524,937 ACamco International Inc. · 1996
- Coiled tubing connector91US 5,452,923 ACanadian Fracmaster Ltd. · 1995
- Wellbore primary barrier and related systems57US 6,209,636 B1Weatherford/Lamb, Inc. · 2001
- Composite coiled tubing end connector47US 5,988,702 AFiber Spar and Tube Corporation · 1999
- Connector for coil tubing or the like45US 4,844,516 AOtis Engineering Corporation · 1989