E21B 7/06
Deflecting the direction of boreholes
E21B7/06 (Deflecting the direction of boreholes) appears on 2,854 US grants and 2,234 published applications in this corpus.
Search patents in E21B- Granted patents
- 2,854
- Published applications
- 2,234
- Assignees
- 644
- Inventors
- 3,433
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 12 | 0 |
| 1977 | 11 | 0 |
| 1978 | 7 | 0 |
| 1979 | 7 | 0 |
| 1980 | 11 | 0 |
| 1981 | 22 | 0 |
| 1982 | 7 | 0 |
| 1983 | 16 | 0 |
| 1984 | 19 | 0 |
| 1985 | 19 | 0 |
| 1986 | 20 | 0 |
| 1987 | 26 | 0 |
| 1988 | 23 | 0 |
| 1989 | 41 | 0 |
| 1990 | 30 | 0 |
| 1991 | 40 | 0 |
| 1992 | 47 | 0 |
| 1993 | 38 | 0 |
| 1994 | 48 | 0 |
| 1995 | 66 | 0 |
| 1996 | 50 | 0 |
| 1997 | 41 | 0 |
| 1998 | 57 | 0 |
| 1999 | 60 | 0 |
| 2000 | 69 | 0 |
| 2001 | 76 | 18 |
| 2002 | 75 | 87 |
| 2003 | 64 | 57 |
| 2004 | 51 | 64 |
| 2005 | 50 | 43 |
| 2006 | 42 | 53 |
| 2007 | 54 | 46 |
| 2008 | 38 | 56 |
| 2009 | 33 | 85 |
| 2010 | 43 | 62 |
| 2011 | 46 | 64 |
| 2012 | 68 | 78 |
| 2013 | 64 | 87 |
| 2014 | 62 | 94 |
| 2015 | 80 | 115 |
| 2016 | 95 | 155 |
| 2017 | 112 | 118 |
| 2018 | 107 | 122 |
| 2019 | 125 | 133 |
| 2020 | 139 | 126 |
| 2021 | 137 | 119 |
| 2022 | 110 | 97 |
| 2023 | 110 | 88 |
| 2024 | 93 | 111 |
| 2025 | 110 | 96 |
| 2026 | 83 | 60 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- E21B 7/061The tool shaft advancing relative to a guide848
- E21B 7/068Drilled by a down-hole drilling motor653
- E21B 7/067With means for locking sections of a pipe or of a guide539
- E21B 7/062The tool shaft rotating inside a non-rotating guide travelling with the shaft430
- E21B 7/064Specially adapted drill bits therefor244
- E21B 7/065Using oriented fluid jets120
Recent patents
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- Depth activated downhole adjustable bend assemblies22 Sep 2026US 12,742,360 B2National Oilwell Varco, L. P.
- Interference compensated cross-axial magnetometer measurements22 Sep 2026US 12,742,380 B2Schlumberger Technology Corporation
- Drill head for use with microtunneling apparatus15 Sep 2026US 12,735,946 B2OptionX Holdings Pty Ltd
- Systems and methods for autonomous wellbore placement8 Oct 2026US 2026/0309019 A1Schlumberger Technology Corporation
- Drilling a multilateral closed-loop geothermal well24 Sep 2026US 2026/0286781 A1Eavor Technologies Inc.
- Increased drill bit or lower bha inertia for reducing hfto24 Sep 2026US 2026/0286783 A1Schlumberger Technology Corporation
- Automated control of trajectory of downhole drilling24 Sep 2026US 2026/0286829 A1Schlumberger Technology Corporation
- Systems and methods for automated coiled tubing drilling operations17 Sep 2026US 2026/0275854 A1Schlumberger Technology Corporation
Most cited
By later US patents
- Method and apparatus for conversion of coal in situ366US 4,776,638 AUniversity of Kentucky Research Foundation · 1988
- Method and apparatus for sealing the juncture between a vertical well and one or more horizontal wells using deformable sealing means361US 5,388,648 ABaker Hughes Incorporated · 1995
- Downhole combination tool358US 5,064,006 AMagrange, Inc · 1991
- Actively controlled rotary steerable system and method for drilling wells344US 6,092,610 ASchlumberger Technology Corporation · 2000
- Expandable wellbore junction301US 6,135,208 AHalliburton Energy Services.Inc. · 2000