E21B 49/0875
Determining specific fluid parameters
Official title: {determining specific fluid parameters}
E21B49/0875 (Determining specific fluid parameters) appears on 914 US grants and 1,056 published applications in this corpus.
Search patents in E21B- Granted patents
- 914
- Published applications
- 1,056
- Assignees
- 190
- Inventors
- 1,852
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 3 | 0 |
| 1986 | 0 | 0 |
| 1987 | 3 | 0 |
| 1988 | 2 | 0 |
| 1989 | 2 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 3 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 2 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 0 |
| 2002 | 1 | 5 |
| 2003 | 2 | 7 |
| 2004 | 5 | 10 |
| 2005 | 6 | 5 |
| 2006 | 8 | 4 |
| 2007 | 7 | 3 |
| 2008 | 3 | 2 |
| 2009 | 1 | 12 |
| 2010 | 5 | 11 |
| 2011 | 3 | 15 |
| 2012 | 10 | 18 |
| 2013 | 8 | 27 |
| 2014 | 15 | 29 |
| 2015 | 15 | 49 |
| 2016 | 36 | 78 |
| 2017 | 48 | 83 |
| 2018 | 44 | 86 |
| 2019 | 85 | 89 |
| 2020 | 97 | 84 |
| 2021 | 86 | 120 |
| 2022 | 102 | 78 |
| 2023 | 109 | 79 |
| 2024 | 85 | 74 |
| 2025 | 70 | 53 |
| 2026 | 36 | 35 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Subsurface detection system and method6 Oct 2026US 12,753,692 B2Schlumberger Technology Corporation
- Determination of downhole formation fluid contamination and certain component concentrations15 Sep 2026US 12,735,984 B2Halliburton Energy Services.Inc.
- Apparatus and method for milling openings in an uncemented blank pipe8 Sep 2026US 12,729,612 B2Saudi Arabian Oil Company
- Methods and systems for producing organic compounds in a subterranean environment25 Aug 2026US 12,716,334 B2Cemvita Factory, Inc.
- Downhole detection of formation and fluid properties using quantum sensor for NMR measurements18 Aug 2026US 12,709,980 B2Halliburton Energy Services.Inc.
- Method for measuring downhole holdup, and method for determining downhole fluid interface and geometric distribution8 Oct 2026US 2026/0309606 A1China University of Petroleum (East China)
- Systems and methods for discovering and recovering subsurface fluids and verification of subsurface storage fluids1 Oct 2026US 2026/0298082 A1Koloma, Inc.
- Real time downhole api determination24 Sep 2026US 2026/0286843 A1Schlumberger Technology Corporation
- Process for positioning or predicting flow in at least a fluid production well and/or at least a fluid injection well in a field, related electronic system and computer program product27 Aug 2026US 2026/0251045 A1Totalenergies Onetech
- Estimating a cleanup curve for a downhole fluid sampling operation27 Aug 2026US 2026/0251063 A1Schlumberger Technology Corporation
Most cited
By later US patents
- Systems and methods for exchanging fracturing components of a hydraulic fracturing unit180US 10,954,770 B1BJ Energy Solutions, LLC · 2021
- Downhole fluid property measurement tool144US 5,329,811 AHalliburton Company · 1994
- Systems and methods for exchanging fracturing components of a hydraulic fracturing unit131US 11,015,423 B1BJ Energy Solutions, LLC · 2021
- Systems and methods for exchanging fracturing components of a hydraulic fracturing unit131US 11,085,281 B1BJ Energy Solutions, LLC · 2021
- Multiphase flow measurement system110US 6,318,156 B1Micro Motion, Inc. · 2001