E21B 17/22
Rods or pipes with helical structure
E21B17/22 (Rods or pipes with helical structure) appears on 229 US grants and 141 published applications in this corpus.
Search patents in E21B- Granted patents
- 229
- Published applications
- 141
- Assignees
- 127
- Inventors
- 400
- Latest grant
- 28 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 6 | 0 |
| 1978 | 2 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 5 | 0 |
| 1982 | 3 | 0 |
| 1983 | 2 | 0 |
| 1984 | 9 | 0 |
| 1985 | 1 | 0 |
| 1986 | 3 | 0 |
| 1987 | 7 | 0 |
| 1988 | 6 | 0 |
| 1989 | 6 | 0 |
| 1990 | 6 | 0 |
| 1991 | 12 | 0 |
| 1992 | 5 | 0 |
| 1993 | 1 | 0 |
| 1994 | 7 | 0 |
| 1995 | 5 | 0 |
| 1996 | 11 | 0 |
| 1997 | 4 | 0 |
| 1998 | 2 | 0 |
| 1999 | 1 | 0 |
| 2000 | 3 | 0 |
| 2001 | 4 | 4 |
| 2002 | 6 | 4 |
| 2003 | 3 | 2 |
| 2004 | 2 | 7 |
| 2005 | 2 | 2 |
| 2006 | 2 | 5 |
| 2007 | 2 | 4 |
| 2008 | 4 | 6 |
| 2009 | 1 | 6 |
| 2010 | 10 | 8 |
| 2011 | 2 | 4 |
| 2012 | 2 | 4 |
| 2013 | 3 | 2 |
| 2014 | 1 | 3 |
| 2015 | 8 | 12 |
| 2016 | 8 | 9 |
| 2017 | 4 | 7 |
| 2018 | 8 | 12 |
| 2019 | 4 | 7 |
| 2020 | 12 | 10 |
| 2021 | 7 | 4 |
| 2022 | 8 | 6 |
| 2023 | 6 | 2 |
| 2024 | 6 | 5 |
| 2025 | 2 | 4 |
| 2026 | 2 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Downhole orienting helix for operations requiring multiple orienting sequences28 Apr 2026US 12,612,834 B2Halliburton Energy Services.Inc.
- Drill string components having multiple-thread joints17 Feb 2026US 12,553,298 B2Boart Longyear Manufacturing And Distribution Inc.
- Stick slip tool22 Jul 2025US 12,366,125 B1Downhole Well Solutions, LLC
- Downhole traction tool and method of use18 Feb 2025US 12,227,997 B2Innovative Drilling Systems Limited
- Wear resistant tubular members and systems and methods for producing the same5 Nov 2024US 12,134,940 B2National Oilwell Varco, L. P.
- Downhole orienting helix for operations requiring multiple orienting sequences13 Aug 2026US 2026/0235007 A1Halliburton Energy Services.Inc.
- Downhole casing auger for removal of paraffin from oil and gas wells12 Mar 2026US 2026/0071501 A1Missaukee Oil and Gas Company LLC
- Collection unit for cuttings11 Dec 2025US 2025/0376904 A1Coring Incorporated
- High-temperature fluids for coiled tubing applications and methods thereof28 Aug 2025US 2025/0270437 A1Schlumberger Technology Corporation
- Downhole Orienting Helix for Operations Requiring Multiple Orienting Sequences5 Jun 2025US 2025/0179890 A1Halliburton Energy Services.Inc.
Most cited
By later US patents
- Casing shoe with cutting means135US 6,062,326 AEnterprise Oil plc · 2000
- Methods and systems for subterranean multilateral well drilling and completion106US 5,564,503 AHalliburton Company · 1996
- Apparatus for reducing annular back pressure near the drill bit104US 4,049,066 A1977
- Methods and systems for subterranean multilateral well drilling and completion99US 5,735,350 AHalliburton Energy Services.Inc. · 1998
- Roller cone core bit with spiral stabilizers90US 5,289,889 A1994