E21B 19/22
Handling reeled pipe or rod units
Official title: Handling reeled pipe or rod units, e.g. flexible drilling pipes {(lifting or hauling appliances using two or more cooperating endless chains B66D3/003)}
E21B19/22 (Handling reeled pipe or rod units) appears on 962 US grants and 847 published applications in this corpus.
Search patents in E21B- Granted patents
- 962
- Published applications
- 847
- Assignees
- 408
- Inventors
- 1,611
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 6 | 0 |
| 1977 | 6 | 0 |
| 1978 | 4 | 0 |
| 1979 | 8 | 0 |
| 1980 | 2 | 0 |
| 1981 | 6 | 0 |
| 1982 | 8 | 0 |
| 1983 | 4 | 0 |
| 1984 | 13 | 0 |
| 1985 | 9 | 0 |
| 1986 | 9 | 0 |
| 1987 | 6 | 0 |
| 1988 | 12 | 0 |
| 1989 | 9 | 0 |
| 1990 | 10 | 0 |
| 1991 | 9 | 0 |
| 1992 | 10 | 0 |
| 1993 | 14 | 0 |
| 1994 | 12 | 0 |
| 1995 | 14 | 0 |
| 1996 | 8 | 0 |
| 1997 | 9 | 0 |
| 1998 | 24 | 0 |
| 1999 | 19 | 0 |
| 2000 | 16 | 0 |
| 2001 | 22 | 4 |
| 2002 | 26 | 20 |
| 2003 | 22 | 33 |
| 2004 | 17 | 27 |
| 2005 | 19 | 20 |
| 2006 | 20 | 32 |
| 2007 | 20 | 35 |
| 2008 | 19 | 19 |
| 2009 | 13 | 37 |
| 2010 | 27 | 26 |
| 2011 | 18 | 33 |
| 2012 | 21 | 31 |
| 2013 | 20 | 29 |
| 2014 | 23 | 56 |
| 2015 | 27 | 49 |
| 2016 | 38 | 54 |
| 2017 | 46 | 38 |
| 2018 | 44 | 50 |
| 2019 | 46 | 44 |
| 2020 | 34 | 41 |
| 2021 | 34 | 39 |
| 2022 | 38 | 26 |
| 2023 | 29 | 28 |
| 2024 | 47 | 30 |
| 2025 | 25 | 25 |
| 2026 | 20 | 21 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Cables for cable deployed electric submersible pumps6 Oct 2026US 12,755,862 B2Schlumberger Technology Corporation
- Composite umbilical for pulse power boring system25 Aug 2026US 12,716,297 B2Halliburton Energy Services.Inc.
- Bottomhole assembly for geothermal field construction25 Aug 2026US 12,716,345 B2Bedrock Energy, Inc.
- Rotating gin pole18 Aug 2026US 12,709,950 B1Swivel Rental & Supply, L.L.C.
- Slack management4 Aug 2026US 12,698,685 B2Saudi Arabian Oil Company
- Methods for real-time optimization of coiled tubing cleanout operations using downhole pressure sensors17 Sep 2026US 2026/0275821 A1Schlumberger Technology Corporation
- Systems and methods for automated coiled tubing drilling operations17 Sep 2026US 2026/0275854 A1Schlumberger Technology Corporation
- Advancing a tubular string in a wellbore3 Sep 2026US 2026/0258707 A1
- Composite umbilical for pulse power boring system16 Jul 2026US 2026/0201753 A1Halliburton Energy Services.Inc.
- Systems and methods for aligning coiled tubing strings at a wellsite11 Jun 2026US 2026/0160139 A1National Oilwell Varco, L. P.
Most cited
By later US patents
- Insulated and/or concentric coiled tubing429US 6,015,015 ABJ Services Company, U.S.A. · 2000
- Formation-tailored method and apparatus for uniformly heating long subterranean intervals at high temperature368US 4,570,715 AShell Oil Company · 1986
- Mini-well temperature profiling process311US 4,616,705 AShell Oil Company · 1986
- Well treating process for installing a cable bundle containing strands of changing diameter303US 4,585,066 AShell Oil Company · 1986
- Method for running downhole tools and devices with coiled tubing276US 5,435,395 AHalliburton Company · 1995