E21B 49/006
Measuring wall stresses in the borehole
Official title: {Measuring wall stresses in the borehole}
E21B49/006 (Measuring wall stresses in the borehole) appears on 413 US grants and 323 published applications in this corpus.
Search patents in E21B- Granted patents
- 413
- Published applications
- 323
- Assignees
- 189
- Inventors
- 974
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 6 | 0 |
| 1977 | 1 | 0 |
| 1978 | 2 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 3 | 0 |
| 1982 | 3 | 0 |
| 1983 | 7 | 0 |
| 1984 | 3 | 0 |
| 1985 | 7 | 0 |
| 1986 | 6 | 0 |
| 1987 | 5 | 0 |
| 1988 | 9 | 0 |
| 1989 | 12 | 0 |
| 1990 | 6 | 0 |
| 1991 | 11 | 0 |
| 1992 | 11 | 0 |
| 1993 | 12 | 0 |
| 1994 | 13 | 0 |
| 1995 | 6 | 0 |
| 1996 | 6 | 0 |
| 1997 | 7 | 0 |
| 1998 | 3 | 0 |
| 1999 | 7 | 0 |
| 2000 | 4 | 0 |
| 2001 | 10 | 2 |
| 2002 | 5 | 6 |
| 2003 | 5 | 5 |
| 2004 | 6 | 7 |
| 2005 | 3 | 5 |
| 2006 | 3 | 6 |
| 2007 | 5 | 2 |
| 2008 | 2 | 3 |
| 2009 | 4 | 10 |
| 2010 | 3 | 11 |
| 2011 | 4 | 6 |
| 2012 | 7 | 11 |
| 2013 | 5 | 3 |
| 2014 | 4 | 12 |
| 2015 | 6 | 16 |
| 2016 | 10 | 13 |
| 2017 | 10 | 17 |
| 2018 | 10 | 12 |
| 2019 | 14 | 21 |
| 2020 | 26 | 31 |
| 2021 | 26 | 27 |
| 2022 | 26 | 25 |
| 2023 | 26 | 20 |
| 2024 | 10 | 16 |
| 2025 | 21 | 20 |
| 2026 | 10 | 16 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- System and method for measuring stress in a rock mass8 Sep 2026US 12,729,624 B2Geomechanical Services and Innovations Inc.
- Systems and methods for well placement in stable in-situ stress for horizonal drilling18 Aug 2026US 12,709,970 B2Saudi Arabian Oil Company
- Formation breakdown pressure near wellbores14 Jul 2026US 12,680,435 B2Saudi Arabian Oil Company
- Hydraulic fracturing framework7 Jul 2026US 12,674,384 B2Schlumberger Technology Corporation
- Inversion method to estimate fracture propagation velocity and fracture volume with cross-well distributed fiber-optic strain data before fracture hit14 Apr 2026US 12,601,255 B2Schlumberger Technology Corporation
- Hydraulic fracturing framework1 Oct 2026US 2026/0298071 A1Schlumberger Technology Corporation
- Triaxial stress simulation method for water storage roadways in abandoned mine pumped storage20 Aug 2026US 2026/0243166 A1Guizhou University
- Method and apparatus for stress testing of geological formations with a high permeability6 Aug 2026US 2026/0226828 A1Schlumberger Technology Corporation
- Determining rock fragment size and size distribution23 Jul 2026US 2026/0210933 A1Halliburton Energy Services.Inc.
- Monitoring a hazardous waste repository formed in a drillhole16 Jul 2026US 2026/0201790 A1Deep Isolation, Inc.
Most cited
By later US patents
- Control of heat injection based on temperature and in-situ stress measurement321US 6,102,122 AShell Oil Company · 2000
- Monitoring of downhole parameters and tools utilizing fiber optics244US 6,281,489 B1Baker Hughes Incorporated · 2001
- Monitoring of downhole parameters and tools utilizing fiber optics241US 6,588,266 B2Baker Hughes Incorporated · 2003
- Acoustic measurements in rock formations for determining fracture orientation183US 4,744,245 AAtlantic Richfield Company · 1988
- Monitoring of downhole parameters and tools utilizing fiber optics159US 6,268,911 B1Baker Hughes Incorporated · 2001