E21B 47/06
Measuring temperature or pressure
E21B47/06 (Measuring temperature or pressure) appears on 3,427 US grants and 3,789 published applications in this corpus.
Search patents in E21B- Granted patents
- 3,427
- Published applications
- 3,789
- Assignees
- 880
- Inventors
- 6,672
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 15 | 0 |
| 1977 | 12 | 0 |
| 1978 | 12 | 0 |
| 1979 | 8 | 0 |
| 1980 | 4 | 0 |
| 1981 | 11 | 0 |
| 1982 | 7 | 0 |
| 1983 | 17 | 0 |
| 1984 | 14 | 0 |
| 1985 | 14 | 0 |
| 1986 | 19 | 0 |
| 1987 | 16 | 0 |
| 1988 | 18 | 0 |
| 1989 | 24 | 0 |
| 1990 | 16 | 0 |
| 1991 | 10 | 0 |
| 1992 | 15 | 0 |
| 1993 | 7 | 0 |
| 1994 | 22 | 0 |
| 1995 | 6 | 0 |
| 1996 | 11 | 0 |
| 1997 | 4 | 0 |
| 1998 | 12 | 0 |
| 1999 | 22 | 0 |
| 2000 | 12 | 0 |
| 2001 | 22 | 6 |
| 2002 | 16 | 25 |
| 2003 | 21 | 29 |
| 2004 | 26 | 45 |
| 2005 | 24 | 33 |
| 2006 | 34 | 27 |
| 2007 | 20 | 38 |
| 2008 | 25 | 34 |
| 2009 | 21 | 59 |
| 2010 | 32 | 33 |
| 2011 | 29 | 55 |
| 2012 | 44 | 68 |
| 2013 | 36 | 85 |
| 2014 | 65 | 132 |
| 2015 | 63 | 238 |
| 2016 | 125 | 237 |
| 2017 | 157 | 287 |
| 2018 | 197 | 338 |
| 2019 | 285 | 330 |
| 2020 | 300 | 320 |
| 2021 | 343 | 340 |
| 2022 | 326 | 280 |
| 2023 | 307 | 247 |
| 2024 | 247 | 225 |
| 2025 | 198 | 181 |
| 2026 | 136 | 97 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Safety valve, well system, and method employing a temperature sensor29 Sep 2026US 12,747,648 B2Halliburton Energy Services.Inc.
- Subsea pumping and booster system22 Sep 2026US 12,742,373 B2Baker Hughes Energy Technology UK Limited
- Downhole sensor apparatus, system, and related methods22 Sep 2026US 12,742,382 B2Baker Hughes Oilfield Operations LLC
- Integrated line system for a mineral extraction system15 Sep 2026US 12,735,951 B2Schlumberger Technology Corporation
- Method of staged refracturing for fractured well15 Sep 2026US 12,735,967 B1Chongqing University
- Downhole sensing based on time domain reflectometry using resistance and capacitance coupling8 Oct 2026US 2026/0309026 A1Halliburton Energy Services.Inc.
- Well analysis applications for oil and natural gas wells with intermittent flows1 Oct 2026US 2026/0298055 A1Yottek Corp.
- Method for optimization of huff-n-puff gas injection in hydrocarbon reservoirs1 Oct 2026US 2026/0298060 A1Texas Tech University System
- Subterranean solids fallback protection device1 Oct 2026US 2026/0298065 A1Fallback LLC
- Method for oil and gas well production management using gradient metering1 Oct 2026US 2026/0298074 A1Schlumberger Technology Corporation
Most cited
By later US patents
- Drilling systems with sensors for determining properties of drilling fluid downhole402US 6,176,323 B1Baker Hughes Incorporated · 2001
- Power sources for downhole electrical heating335US 5,099,918 AUentech Corporation · 1992
- Thermal processes for subsurface formations335US 7,121,342 B2Shell Oil Company · 2006
- Control of heat injection based on temperature and in-situ stress measurement321US 6,102,122 AShell Oil Company · 2000
- Mini-well temperature profiling process311US 4,616,705 AShell Oil Company · 1986