E21B 45/00
Measuring the drilling time or rate of penetration
E21B45/00 (Measuring the drilling time or rate of penetration) appears on 363 US grants and 406 published applications in this corpus.
Search patents in E21B- Granted patents
- 363
- Published applications
- 406
- Assignees
- 129
- Inventors
- 826
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 5 | 0 |
| 1977 | 0 | 0 |
| 1978 | 3 | 0 |
| 1979 | 2 | 0 |
| 1980 | 0 | 0 |
| 1981 | 2 | 0 |
| 1982 | 0 | 0 |
| 1983 | 4 | 0 |
| 1984 | 3 | 0 |
| 1985 | 2 | 0 |
| 1986 | 3 | 0 |
| 1987 | 3 | 0 |
| 1988 | 3 | 0 |
| 1989 | 3 | 0 |
| 1990 | 2 | 0 |
| 1991 | 0 | 0 |
| 1992 | 2 | 0 |
| 1993 | 2 | 0 |
| 1994 | 3 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 2 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 2 |
| 2003 | 1 | 1 |
| 2004 | 2 | 0 |
| 2005 | 1 | 2 |
| 2006 | 1 | 2 |
| 2007 | 3 | 3 |
| 2008 | 1 | 2 |
| 2009 | 1 | 2 |
| 2010 | 2 | 3 |
| 2011 | 4 | 2 |
| 2012 | 1 | 6 |
| 2013 | 4 | 8 |
| 2014 | 4 | 11 |
| 2015 | 10 | 30 |
| 2016 | 14 | 24 |
| 2017 | 6 | 19 |
| 2018 | 24 | 25 |
| 2019 | 29 | 46 |
| 2020 | 26 | 32 |
| 2021 | 46 | 42 |
| 2022 | 36 | 31 |
| 2023 | 29 | 38 |
| 2024 | 29 | 25 |
| 2025 | 23 | 27 |
| 2026 | 19 | 23 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Method performed by a control device for controlling the feeding distance and feeding rate in a rock drilling unit, a rock drilling unit and a rock drilling rig8 Sep 2026US 12,729,619 B2Epiroc Rock Drills Aktiebolag
- Bottomhole assembly for geothermal field construction25 Aug 2026US 12,716,345 B2Bedrock Energy, Inc.
- Drilling apparatus, drill bit, and method for testing drill bit performance11 Aug 2026US 12,704,026 B2Georgia Tech Research Corporation
- Alignable guidance device for casing entry milling and cementing operations28 Jul 2026US 12,692,755 B2Scientific Drilling International, Inc.
- Rate of penetration forecasting while drilling using a transformer-based deep learning model21 Jul 2026US 12,688,399 B2Schlumberger Technology Corporation
- Drilling control1 Oct 2026US 2026/0298069 A1Schlumberger Technology Corporation
- Alignable guidance device for casing entry milling and cementing operations24 Sep 2026US 2026/0286789 A1Scientific Drilling International, Inc.
- Advancing a tubular string in a wellbore24 Sep 2026US 2026/0286800 A1
- Modified mechanical specific energy system and methods using a ternary graph-based approach17 Sep 2026US 2026/0278331 A1Wellbore Consultants LLC
- Drilling framework27 Aug 2026US 2026/0251052 A1Schlumberger Technology Corporation
Most cited
By later US patents
- System and method for surface steerable drilling115US 8,210,283 B1Hunt Energy Enterprises, L.L.C. · 2012
- Method of drilling and production hydrocarbons from subsurface formations90US 7,896,105 B2ExxonMobil Upstream Research Company · 2011
- Wellbore operations monitoring and control systems and methods81US 7,243,735 B2Varco I/P, Inc. · 2007
- Video system and method for determining and monitoring the depth of a bottomhole assembly within a wellbore79US 5,107,705 ASchlumberger Technology Corporation · 1992
- Use of axial accelerometer for estimation of instantaneous ROP downhole for LWD and wireline applications59US 6,769,497 B2Baker Hughes Incorporated · 2004