E21B 15/00
Supports for the drilling machine
Official title: Supports for the drilling machine, e.g. derricks or masts
E21B15/00 (Supports for the drilling machine) appears on 1,142 US grants and 1,039 published applications in this corpus.
Search patents in E21B- Granted patents
- 1,142
- Published applications
- 1,039
- Assignees
- 514
- Inventors
- 1,835
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 17 | 0 |
| 1977 | 12 | 0 |
| 1978 | 13 | 0 |
| 1979 | 7 | 0 |
| 1980 | 8 | 0 |
| 1981 | 11 | 0 |
| 1982 | 14 | 0 |
| 1983 | 13 | 0 |
| 1984 | 14 | 0 |
| 1985 | 7 | 0 |
| 1986 | 14 | 0 |
| 1987 | 5 | 0 |
| 1988 | 6 | 0 |
| 1989 | 15 | 0 |
| 1990 | 5 | 0 |
| 1991 | 3 | 0 |
| 1992 | 4 | 0 |
| 1993 | 10 | 0 |
| 1994 | 6 | 0 |
| 1995 | 8 | 0 |
| 1996 | 4 | 0 |
| 1997 | 5 | 0 |
| 1998 | 14 | 0 |
| 1999 | 11 | 0 |
| 2000 | 13 | 0 |
| 2001 | 10 | 2 |
| 2002 | 13 | 11 |
| 2003 | 13 | 13 |
| 2004 | 8 | 10 |
| 2005 | 11 | 9 |
| 2006 | 6 | 16 |
| 2007 | 8 | 12 |
| 2008 | 9 | 25 |
| 2009 | 14 | 26 |
| 2010 | 15 | 19 |
| 2011 | 13 | 24 |
| 2012 | 14 | 30 |
| 2013 | 33 | 69 |
| 2014 | 28 | 59 |
| 2015 | 54 | 66 |
| 2016 | 70 | 72 |
| 2017 | 63 | 85 |
| 2018 | 60 | 93 |
| 2019 | 83 | 88 |
| 2020 | 105 | 90 |
| 2021 | 62 | 64 |
| 2022 | 60 | 47 |
| 2023 | 48 | 25 |
| 2024 | 48 | 42 |
| 2025 | 34 | 23 |
| 2026 | 21 | 19 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- E21B 15/003Supports for the drilling machine: adapted to be moved on their substructure308
- E21B 15/02Supports for the drilling machine: specially adapted for underwater drilling208
- E21B 15/04Supports for the drilling machine: specially adapted for directional drilling182
- E21B 15/006Means for anchoring the drilling machine to the ground84
Recent patents
- Single-lift wireline intervention unit for offshore wells29 Sep 2026US 12,747,643 B1Expro North Sea Limited
- Construction machine and method for carrying out a construction work step8 Sep 2026US 12,729,586 B1Klemm Bohrtechnik GmbH
- Automated drilling arrangement1 Sep 2026US 12,723,476 B2
- System for detecting an entity in the vicinity of a drilling machine, and corresponding method25 Aug 2026US 12,715,740 B2Mbi Produits De Forage Inc.
- Telescoping torque reaction track device25 Aug 2026US 12,716,298 B2
- Drill rod loader for drilling machines24 Sep 2026US 2026/0286792 A1Comacchio S.R.L.
- Drill bushing retention17 Sep 2026US 2026/0275819 A1Caterpillar Global Mining Equipment LLC
- Construction machine and method for carrying out a construction work step10 Sep 2026US 2026/0266136 A1Klemm Bohrtechnik GmbH
- End effectors for automated pipe handling27 Aug 2026US 2026/0251024 A1National Oilwell Varco, L. P.
- Retention system for retaining deck bushing of drilling machine13 Aug 2026US 2026/0234997 A1Caterpillar Global Mining Equipment LLC
Most cited
By later US patents
- Top drive torque restraint system154US 5,107,940 AHydratech · 1992
- Portable workover rig with extendable mast substructure, platform mounted drawworks and adjustable wellhead anchor143US 4,290,495 AHydra-Rig, Inc. · 1981
- Drilling rig130US 5,251,709 A1993
- Self-aligning top drive124US 4,878,546 ATriten Corporation · 1989
- Modular well drilling apparatus and methods114US 4,899,832 A1990