E21B 47/003
Determining well or borehole volumes
E21B47/003 (Determining well or borehole volumes) appears on 137 US grants and 176 published applications in this corpus.
Search patents in E21B- Granted patents
- 137
- Published applications
- 176
- Assignees
- 74
- Inventors
- 445
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 2 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 1 | 0 |
| 2003 | 0 | 1 |
| 2004 | 0 | 0 |
| 2005 | 0 | 1 |
| 2006 | 1 | 1 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 1 | 2 |
| 2011 | 0 | 1 |
| 2012 | 0 | 1 |
| 2013 | 1 | 7 |
| 2014 | 1 | 2 |
| 2015 | 1 | 4 |
| 2016 | 2 | 12 |
| 2017 | 4 | 10 |
| 2018 | 7 | 7 |
| 2019 | 10 | 15 |
| 2020 | 13 | 24 |
| 2021 | 21 | 30 |
| 2022 | 12 | 18 |
| 2023 | 31 | 9 |
| 2024 | 12 | 16 |
| 2025 | 7 | 10 |
| 2026 | 3 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Systems and methods for determining a wellbore-casing volume6 Oct 2026US 12,753,691 B2Saudi Arabian Oil Company
- Geologic pore system characterization framework16 Jun 2026US 12,655,743 B2Schlumberger Technology Corporation
- Pack off indicator for a wellbore operation7 Apr 2026US 12,595,728 B2Landmark Graphics Corporation
- Parametric attribute of pore volume of subsurface structure from structural depth map30 Dec 2025US 12,509,981 B2Saudi Arabian Oil Company
- Well assembly monitoring2 Dec 2025US 12,486,754 B2Equinor Energy AS
- Conglomerate reservoir segmentation and clustering method and apparatus, storage medium, and processor8 Oct 2026US 2026/0309024 A1PetroChina Company Limited
- Closed loop control of flowback activities1 Oct 2026US 2026/0300585 A1Schlumberger Technology Corporation
- Geologic pore system characterization framework10 Sep 2026US 2026/0266173 A1Schlumberger Technology Corporation
- Augmented intelligence (ai) driven missing reserves opportunity identification9 Apr 2026US 2026/0099794 A1Schlumberger Technology Corporation
- System and method for production forecasting and uses thereof5 Mar 2026US 2026/0063029 A1Saudi Arabian Oil Company
Most cited
By later US patents
- Real time wellbore pit volume monitoring system and method73US 6,234,250 B1Halliburton Energy Services.Inc. · 2001
- Methods and systems for drilling40US 8,939,233 B2Shell Oil Company · 2015
- Methods and systems for drilling17US 8,561,720 B2Shell Oil Company · 2013
- Method for determining borehole or cavity configuration through inert gas interface14US 4,455,869 A1984
- Fluids comprising reflective particles and methods of using the same to determine the size of a wellbore annulus13US 7,137,446 B2Halliburton Energy Services.Inc. · 2006