E21B 7/067
With means for locking sections of a pipe or of a guide
Official title: {with means for locking sections of a pipe or of a guide for a shaft in angular relation, e.g. adjustable bent sub}
E21B7/067 (With means for locking sections of a pipe or of a guide) appears on 539 US grants and 471 published applications in this corpus.
Search patents in E21B- Granted patents
- 539
- Published applications
- 471
- Assignees
- 196
- Inventors
- 839
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 2 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 3 | 0 |
| 1982 | 0 | 0 |
| 1983 | 2 | 0 |
| 1984 | 2 | 0 |
| 1985 | 2 | 0 |
| 1986 | 2 | 0 |
| 1987 | 4 | 0 |
| 1988 | 1 | 0 |
| 1989 | 5 | 0 |
| 1990 | 2 | 0 |
| 1991 | 5 | 0 |
| 1992 | 12 | 0 |
| 1993 | 4 | 0 |
| 1994 | 9 | 0 |
| 1995 | 8 | 0 |
| 1996 | 8 | 0 |
| 1997 | 6 | 0 |
| 1998 | 2 | 0 |
| 1999 | 6 | 0 |
| 2000 | 5 | 0 |
| 2001 | 6 | 3 |
| 2002 | 7 | 14 |
| 2003 | 18 | 12 |
| 2004 | 8 | 9 |
| 2005 | 11 | 13 |
| 2006 | 3 | 10 |
| 2007 | 17 | 8 |
| 2008 | 13 | 13 |
| 2009 | 7 | 15 |
| 2010 | 8 | 14 |
| 2011 | 9 | 19 |
| 2012 | 14 | 21 |
| 2013 | 15 | 20 |
| 2014 | 15 | 19 |
| 2015 | 14 | 23 |
| 2016 | 27 | 39 |
| 2017 | 30 | 33 |
| 2018 | 27 | 34 |
| 2019 | 36 | 36 |
| 2020 | 36 | 26 |
| 2021 | 28 | 16 |
| 2022 | 25 | 21 |
| 2023 | 23 | 14 |
| 2024 | 21 | 16 |
| 2025 | 17 | 16 |
| 2026 | 13 | 7 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Depth activated downhole adjustable bend assemblies22 Sep 2026US 12,742,360 B2National Oilwell Varco, L. P.
- Drill head for use with microtunneling apparatus15 Sep 2026US 12,735,946 B2OptionX Holdings Pty Ltd
- Drill head for use with microtunneling apparatus1 Sep 2026US 12,723,470 B2OptionX Holdings Pty Ltd
- Automatic steering instructions for directional motor drilling25 Aug 2026US RE51,013 E1Nabors Drilling Technologies USA, Inc.
- Push the bit rotary steerable system11 Aug 2026US 12,704,023 B2D-Tech UK Ltd
- Systems and methods for steering a downhole tool6 Aug 2026US 2026/0226797 A1Schlumberger Technology Corporation
- Drill string apparatus11 Jun 2026US 2026/0160132 A1
- Push the bit rotary steerable system11 Jun 2026US 2026/0160135 A1D-Tech UK Ltd
- A drill head for use with microtunneling apparatus30 Apr 2026US 2026/0117595 A1OptionX Holdings Pty Ltd
- Power head of directional drill26 Feb 2026US 2026/0055663 A1CCTEG Chongqing Research Institute Co., Ltd.
Most cited
By later US patents
- Expandable underreamer/stabilizer271US 6,732,817 B2Smith International, Inc. · 2004
- Rotary steerable well drilling system utilizing sliding sleeve213US 6,158,529 ASchlumberger Technology Corporation · 2000
- Coupling assembly151US 5,474,334 AHalliburton Company · 1995
- Drilling direction control device124US 6,769,499 B2Halliburton Energy Services.Inc. · 2004
- Steerable drilling system and method118US 6,581,699 B1Halliburton Energy Services.Inc. · 2003