E21B 17/00
Drilling rods or pipes
Official title: Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; {Cables;} Casings; Tubings
E21B17/00 (Drilling rods or pipes) appears on 12,245 US grants and 10,509 published applications in this corpus.
Search patents in E21B- Granted patents
- 12,245
- Published applications
- 10,509
- Assignees
- 3,044
- Inventors
- 15,655
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 82 | 0 |
| 1977 | 99 | 0 |
| 1978 | 103 | 0 |
| 1979 | 63 | 0 |
| 1980 | 102 | 0 |
| 1981 | 103 | 0 |
| 1982 | 75 | 0 |
| 1983 | 112 | 0 |
| 1984 | 147 | 0 |
| 1985 | 151 | 0 |
| 1986 | 165 | 0 |
| 1987 | 164 | 0 |
| 1988 | 126 | 0 |
| 1989 | 148 | 0 |
| 1990 | 132 | 0 |
| 1991 | 131 | 0 |
| 1992 | 148 | 0 |
| 1993 | 108 | 0 |
| 1994 | 143 | 0 |
| 1995 | 125 | 0 |
| 1996 | 119 | 0 |
| 1997 | 95 | 0 |
| 1998 | 147 | 0 |
| 1999 | 156 | 0 |
| 2000 | 179 | 0 |
| 2001 | 215 | 64 |
| 2002 | 216 | 192 |
| 2003 | 182 | 245 |
| 2004 | 182 | 300 |
| 2005 | 156 | 271 |
| 2006 | 243 | 249 |
| 2007 | 200 | 259 |
| 2008 | 195 | 294 |
| 2009 | 162 | 279 |
| 2010 | 261 | 370 |
| 2011 | 235 | 400 |
| 2012 | 259 | 395 |
| 2013 | 257 | 458 |
| 2014 | 342 | 520 |
| 2015 | 416 | 667 |
| 2016 | 475 | 701 |
| 2017 | 573 | 653 |
| 2018 | 548 | 643 |
| 2019 | 638 | 562 |
| 2020 | 632 | 523 |
| 2021 | 541 | 573 |
| 2022 | 562 | 500 |
| 2023 | 531 | 450 |
| 2024 | 434 | 407 |
| 2025 | 449 | 326 |
| 2026 | 218 | 208 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- E21B 17/02Couplings6,015
- E21B 17/10Wear protectors3,028
- E21B 17/01Risers1,431
- E21B 17/20Flexible or articulated drilling pipes1,020
- E21B 17/003Drilling rods or pipes: with electrically conducting or insulating means808
- E21B 17/18Pipes provided with plural fluid passages510
- E21B 17/006Accessories for drilling pipes416
- E21B 17/22Rods or pipes with helical structure229
All 10 subgroupsShow fewer
Recent patents
- Vibrational damper for elevated temperatures6 Oct 2026US 12,753,659 B2Baker Hughes Oilfield Operations LLC
- Methods and systems for earth drilling6 Oct 2026US 12,753,664 B2Mhwirth AS
- Tool string transportation device6 Oct 2026US 12,753,667 B2Petromac IP Limited
- Retrofit vortex-induced-vibration (VIV) suppression device29 Sep 2026US 12,747,640 B2Oceaneering International, Inc.
- Electro-mechanical disconnect mechanism29 Sep 2026US 12,747,641 B2Schlumberger Technology Corporation
- Threaded Joint8 Oct 2026US 2026/0308988 A1Diversity Technologies Corporation
- Downhole apparatus for oscillating a tubular string8 Oct 2026US 2026/0308989 A1Grant Prideco, L.P.
- Drilling in hot zones with a multiple tubing drill string8 Oct 2026US 2026/0309003 A1Eavor Technologies Inc.
- Drilling in hot zones on coiled tubing8 Oct 2026US 2026/0309004 A1Eavor Technologies Inc.
- Bi-directional Running Tool for Expandable Liner Hanger8 Oct 2026US 2026/0309007 A1Halliburton Energy Services.Inc.
Most cited
By later US patents
- Flexible drill pipe1,497US 4,328,839 ADrilling Development, Inc. · 1982
- Flexible drill pipe1,412US 4,600,037 ATexas Eastern Drilling Systems, Inc. · 1986
- Insulated and/or concentric coiled tubing429US 6,015,015 ABJ Services Company, U.S.A. · 2000
- Cardiac pacing using adjustable atrio-ventricular delays393US 6,542,775 B2Cardiac Pacemakers, Inc. · 2003
- Method and system for introducing electric current into a well374US 4,716,960 AProduction Technologies International Inc. · 1988