E21B 47/103
Using thermal measurements
Official title: using thermal measurements
E21B47/103 (Using thermal measurements) appears on 167 US grants and 181 published applications in this corpus.
Search patents in E21B- Granted patents
- 167
- Published applications
- 181
- Assignees
- 58
- Inventors
- 380
- Latest grant
- 11 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 2 | 0 |
| 1979 | 3 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 2 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 2 | 0 |
| 1988 | 0 | 0 |
| 1989 | 2 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 2 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 3 | 0 |
| 1997 | 2 | 0 |
| 1998 | 0 | 0 |
| 1999 | 2 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 0 |
| 2002 | 1 | 3 |
| 2003 | 3 | 3 |
| 2004 | 3 | 5 |
| 2005 | 3 | 1 |
| 2006 | 4 | 5 |
| 2007 | 2 | 8 |
| 2008 | 4 | 10 |
| 2009 | 6 | 2 |
| 2010 | 5 | 7 |
| 2011 | 2 | 7 |
| 2012 | 7 | 3 |
| 2013 | 2 | 10 |
| 2014 | 5 | 16 |
| 2015 | 4 | 7 |
| 2016 | 2 | 8 |
| 2017 | 7 | 13 |
| 2018 | 8 | 11 |
| 2019 | 13 | 14 |
| 2020 | 18 | 12 |
| 2021 | 7 | 5 |
| 2022 | 7 | 5 |
| 2023 | 8 | 10 |
| 2024 | 6 | 9 |
| 2025 | 7 | 4 |
| 2026 | 6 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Monitoring a hazardous waste repository11 Aug 2026US 12,703,017 B2Deep Isolation, Inc.
- System and method for injector warm-back time optimization for zonal allocation in reservoirs16 Jun 2026US 12,655,751 B2ExxonMobil Technology and Engineering Company
- Method for determining a flow rate of a drilling mud in a subsoil drilling system12 May 2026US 12,624,602 B2Geolog S.r.l.
- Lost circulation detection device28 Apr 2026US 12,612,856 B2CNPC Engineering Technology R&D Company Limited
- Methods and systems for real-time multiphase flow prediction using sensor fusion and physics-based hybrid AI model(s)3 Mar 2026US 12,565,833 B2Saudi Arabian Oil Company
- Downhole flow monitoring and evaluation using distributed acoustic sensing and acoustic noise logging1 Oct 2026US 2026/0298078 A1Halliburton Energy Services.Inc.
- Predicting Subsurface Safety Valve Leak Rates23 Jul 2026US 2026/0210236 A1Saudi Arabian Oil Company
- Computer program product and system for analyzing temperature gradients to locate leaks in well casings9 Apr 2026US 2026/0098470 A1Aera Energy LLC
- Downhole pressure and flow rate estimation25 Dec 2025US 2025/0389184 A1Chevron U.S.A.Inc.
- Flow metering devices, systems, and methods18 Dec 2025US 2025/0382873 A1VMC Patent Inc.
Most cited
By later US patents
- Permanent downhole, wireless, two-way telemetry backbone using redundant repeaters221US 6,958,704 B2Shell Oil Company · 2005
- Controllable gas-lift well and valve202US 6,715,550 B2Shell Oil Company · 2004
- Method of controlling the flow of landfill gas from sanitary landfills and apparatus for performing the method93US 4,890,672 ARagn-Sellsforetagen AB · 1990
- Methods for monitoring temperature-vs-depth characteristics in a borehole during and after hydraulic fracture treatments85US 4,832,121 AThe Trustees of Columbia University in the City of New York · 1989
- Apparatus for determining mechanical integrity of wells76US 5,353,873 A1994