G01N 33/2823
Raw oil, drilling fluid or polyphasic mixtures
Official title: {Raw oil, drilling fluid or polyphasic mixtures}
G01N33/2823 (Raw oil, drilling fluid or polyphasic mixtures) appears on 1,339 US grants and 1,379 published applications in this corpus.
Search patents in G01N- Granted patents
- 1,339
- Published applications
- 1,379
- Assignees
- 442
- Inventors
- 2,922
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 1 | 0 |
| 1978 | 2 | 0 |
| 1979 | 4 | 0 |
| 1980 | 4 | 0 |
| 1981 | 5 | 0 |
| 1982 | 5 | 0 |
| 1983 | 8 | 0 |
| 1984 | 11 | 0 |
| 1985 | 13 | 0 |
| 1986 | 7 | 0 |
| 1987 | 8 | 0 |
| 1988 | 10 | 0 |
| 1989 | 11 | 0 |
| 1990 | 16 | 0 |
| 1991 | 7 | 0 |
| 1992 | 10 | 0 |
| 1993 | 13 | 0 |
| 1994 | 5 | 0 |
| 1995 | 9 | 0 |
| 1996 | 11 | 0 |
| 1997 | 12 | 0 |
| 1998 | 11 | 0 |
| 1999 | 6 | 0 |
| 2000 | 8 | 0 |
| 2001 | 18 | 1 |
| 2002 | 12 | 10 |
| 2003 | 14 | 18 |
| 2004 | 13 | 27 |
| 2005 | 13 | 16 |
| 2006 | 18 | 19 |
| 2007 | 14 | 24 |
| 2008 | 24 | 27 |
| 2009 | 21 | 32 |
| 2010 | 26 | 33 |
| 2011 | 16 | 37 |
| 2012 | 30 | 31 |
| 2013 | 36 | 67 |
| 2014 | 28 | 57 |
| 2015 | 44 | 68 |
| 2016 | 50 | 91 |
| 2017 | 67 | 95 |
| 2018 | 72 | 74 |
| 2019 | 78 | 90 |
| 2020 | 103 | 84 |
| 2021 | 67 | 91 |
| 2022 | 90 | 90 |
| 2023 | 100 | 117 |
| 2024 | 79 | 63 |
| 2025 | 57 | 74 |
| 2026 | 50 | 43 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- NMR characterization of modified drilling fluids6 Oct 2026US 12,754,154 B2Schlumberger Technology Corporation
- Method of determining saturates, aromatics, resins, and asphaltene (SARA) fractions of reservoir fluid during downhole fluid analysis29 Sep 2026US 12,748,097 B2Schlumberger Technology Corporation
- Method for processing sampled proppant during hydraulic fracturing22 Sep 2026US 12,742,385 B2Gti Energy
- Integration of fluid analyzer module measurements for quality control of fluid sampling and processes for using same22 Sep 2026US 12,742,729 B2Schlumberger Technology Corporation
- Systems and methods for determining oil quality based on pump curve data22 Sep 2026US 12,742,769 B2Saudi Arabian Oil Company
- 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)
- Fluid cell device and method for measuring drilling mud properties8 Oct 2026US 2026/0309674 A1
- Ultrasonic electromagnetic sensor for multiphase cut measurements and associated methods1 Oct 2026US 2026/0298858 A1PERM Inc.
- System and method of monitoring subterranean reservoirs24 Sep 2026US 2026/0286836 A1Resman AS
- Device and method for testing surface hydration inhibition of drilling fluid24 Sep 2026US 2026/0287526 A1Southwest Petroleum University
Most cited
By later US patents
- High temperature fluid sample aging cell162US 9,784,667 B2OFI Testing Equipment, Inc. · 2017
- Methods and apparatus for determining gas-oil ratio in a geological formation through the use of spectroscopy131US 5,939,717 ASchlumberger Technology Corporation · 1999
- In situ optical computation fluid analysis system and method131US 7,697,141 B2Halliburton Energy Services.Inc. · 2010
- Method and system for measuring properties of fluids117US 4,530,234 AMobil Oil Corporation · 1985
- Method of distinguishing between crude oils108US 5,266,800 ASchlumberger Technology Corporation · 1993