E21B 12/02
Wear indicators
E21B12/02 (Wear indicators) appears on 210 US grants and 185 published applications in this corpus.
Search patents in E21B- Granted patents
- 210
- Published applications
- 185
- Assignees
- 85
- Inventors
- 376
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 2 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 2 | 0 |
| 1982 | 1 | 0 |
| 1983 | 2 | 0 |
| 1984 | 2 | 0 |
| 1985 | 3 | 0 |
| 1986 | 3 | 0 |
| 1987 | 6 | 0 |
| 1988 | 4 | 0 |
| 1989 | 3 | 0 |
| 1990 | 6 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 2 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 4 | 0 |
| 1999 | 0 | 0 |
| 2000 | 3 | 0 |
| 2001 | 2 | 2 |
| 2002 | 5 | 10 |
| 2003 | 8 | 3 |
| 2004 | 7 | 5 |
| 2005 | 0 | 2 |
| 2006 | 4 | 1 |
| 2007 | 1 | 0 |
| 2008 | 5 | 8 |
| 2009 | 5 | 6 |
| 2010 | 2 | 5 |
| 2011 | 4 | 4 |
| 2012 | 1 | 7 |
| 2013 | 1 | 3 |
| 2014 | 5 | 6 |
| 2015 | 9 | 11 |
| 2016 | 1 | 12 |
| 2017 | 8 | 15 |
| 2018 | 11 | 9 |
| 2019 | 11 | 8 |
| 2020 | 14 | 11 |
| 2021 | 11 | 10 |
| 2022 | 13 | 16 |
| 2023 | 12 | 8 |
| 2024 | 8 | 4 |
| 2025 | 6 | 8 |
| 2026 | 8 | 11 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Earth-boring tools, hybrid earth-boring tools, and associated apparatus and methods29 Sep 2026US 12,747,636 B2Baker Hughes Oilfield Operations LLC
- System for determining health of drill string components of drilling machines28 Jul 2026US 12,692,756 B2Caterpillar Global Mining Equipment LLC
- Real-time wear detection of a drill bit downhole in a wellbore14 Jul 2026US 12,680,396 B2Halliburton Energy Services.Inc.
- System for generating bit wear model predictions and related methods9 Jun 2026US 12,650,049 B2
- Machine learning assessment of autonomous drill bit hard face quality19 May 2026US 12,632,948 B2Schlumberger Technology Corporation
- Earth-boring tools, hybrid earth-boring tools, and associated apparatus and methods27 Aug 2026US 2026/0251018 A1Baker Hughes Oilfield Operations LLC
- Drill bit cutter identification and grading13 Aug 2026US 2026/0237039 A1Schlumberger Technology Corporation
- Wear data classification with machine learning for well tools16 Jul 2026US 2026/0201754 A1Taurex Drill Bits, LLC
- Training an Artificial Intelligence Model to Predict Bit Wear9 Jul 2026US 2026/0193972 A1Baker Hughes Oilfield Operations LLC
- Sensor assembly18 Jun 2026US 2026/0168929 A1Wear Detection Technologies Pty Ltd
Most cited
By later US patents
- Method and system for predicting performance of a drilling system for a given formation216US 6,408,953 B1Halliburton Energy Services.Inc. · 2002
- Iterative drilling simulation process for enhanced economic decision making165US 6,612,382 B2Halliburton Energy Services.Inc. · 2003
- Method and apparatus for monitoring and recording of operating conditions of a downhole drill bit during drilling operations152US 5,813,480 ABaker Hughes Incorporated · 1998
- Method and system for predicting performance of a drilling system for a given formation135US 6,109,368 ADresser Industries, Inc. · 2000
- Method and system for predicting performance of a drilling system of a given formation135US 7,032,689 B2Halliburton Energy Services.Inc. · 2006