E21B 17/003
Drilling rods or pipes: with electrically conducting or insulating means
Official title: {with electrically conducting or insulating means (E21B17/028 and E21B17/023 take precedence)}
E21B17/003 (Drilling rods or pipes: with electrically conducting or insulating means) appears on 808 US grants and 709 published applications in this corpus.
Search patents in E21B- Granted patents
- 808
- Published applications
- 709
- Assignees
- 254
- Inventors
- 1,308
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 8 | 0 |
| 1978 | 10 | 0 |
| 1979 | 7 | 0 |
| 1980 | 7 | 0 |
| 1981 | 4 | 0 |
| 1982 | 10 | 0 |
| 1983 | 8 | 0 |
| 1984 | 10 | 0 |
| 1985 | 15 | 0 |
| 1986 | 13 | 0 |
| 1987 | 9 | 0 |
| 1988 | 18 | 0 |
| 1989 | 16 | 0 |
| 1990 | 10 | 0 |
| 1991 | 6 | 0 |
| 1992 | 7 | 0 |
| 1993 | 5 | 0 |
| 1994 | 8 | 0 |
| 1995 | 1 | 0 |
| 1996 | 4 | 0 |
| 1997 | 8 | 0 |
| 1998 | 6 | 0 |
| 1999 | 5 | 0 |
| 2000 | 5 | 0 |
| 2001 | 6 | 6 |
| 2002 | 10 | 16 |
| 2003 | 12 | 15 |
| 2004 | 14 | 20 |
| 2005 | 12 | 23 |
| 2006 | 26 | 15 |
| 2007 | 10 | 15 |
| 2008 | 8 | 10 |
| 2009 | 9 | 15 |
| 2010 | 11 | 13 |
| 2011 | 7 | 23 |
| 2012 | 12 | 22 |
| 2013 | 12 | 19 |
| 2014 | 21 | 43 |
| 2015 | 19 | 54 |
| 2016 | 36 | 55 |
| 2017 | 54 | 71 |
| 2018 | 43 | 59 |
| 2019 | 58 | 57 |
| 2020 | 62 | 39 |
| 2021 | 47 | 31 |
| 2022 | 41 | 25 |
| 2023 | 23 | 15 |
| 2024 | 16 | 19 |
| 2025 | 28 | 15 |
| 2026 | 9 | 14 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Selectively powering an electrical submersible pump assembly15 Sep 2026US 12,735,964 B2Saudi Arabian Oil Company
- Downhole trickle charge device, apparatus, and method1 Sep 2026US 12,723,508 B2A.O. International II, Inc.
- Composite umbilical for pulse power boring system25 Aug 2026US 12,716,297 B2Halliburton Energy Services.Inc.
- High temperature superconducting cable based power delivery system in pulsed power drilling11 Aug 2026US 12,704,024 B2Halliburton Energy Services.Inc.
- Superconducting cables for electrical submersible pump motors21 Apr 2026US 12,609,217 B2Halliburton Energy Services.Inc.
- Well pipe having electrical conductor with improved electrical contacts1 Oct 2026US 2026/0298379 A1
- Pump installation apparatus, pump installation method, and pump removing method24 Sep 2026US 2026/0286799 A1
- Z-shaped steel wire sealed load-bearing detection cable17 Sep 2026US 2026/0276855 A1Hebei Huatong Wires & Cables Group Co., Ltd.
- Advanced sensor subsystems for dynamic drilling performance and lithology identification in real time20 Aug 2026US 2026/0243159 A1
- Composite umbilical for pulse power boring system16 Jul 2026US 2026/0201753 A1Halliburton Energy Services.Inc.
Most cited
By later US patents
- Method and system for introducing electric current into a well374US 4,716,960 AProduction Technologies International Inc. · 1988
- Method and apparatus for pumping wells338US 5,207,273 AProduction Technologies International Inc. · 1993
- Sealed electrical conductor method and arrangement for use with a well bore in hazardous areas332US 5,289,882 A1994
- Method and apparatus for producing tar sand deposits containing conductive layers having little or no vertical communication315US 5,060,726 AShell Oil Company · 1991
- Thermal mineral extraction system294US 5,285,846 AFramo Developments (UK) Limited · 1994