E21B 49/10
Using side-wall fluid samplers or testers
Official title: using side-wall fluid samplers or testers
E21B49/10 (Using side-wall fluid samplers or testers) appears on 795 US grants and 770 published applications in this corpus.
Search patents in E21B- Granted patents
- 795
- Published applications
- 770
- Assignees
- 89
- Inventors
- 1,036
- Latest grant
- 28 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 2 | 0 |
| 1981 | 6 | 0 |
| 1982 | 1 | 0 |
| 1983 | 4 | 0 |
| 1984 | 2 | 0 |
| 1985 | 3 | 0 |
| 1986 | 2 | 0 |
| 1987 | 3 | 0 |
| 1988 | 3 | 0 |
| 1989 | 6 | 0 |
| 1990 | 6 | 0 |
| 1991 | 3 | 0 |
| 1992 | 5 | 0 |
| 1993 | 8 | 0 |
| 1994 | 4 | 0 |
| 1995 | 2 | 0 |
| 1996 | 3 | 0 |
| 1997 | 8 | 0 |
| 1998 | 9 | 0 |
| 1999 | 5 | 0 |
| 2000 | 9 | 0 |
| 2001 | 8 | 1 |
| 2002 | 10 | 12 |
| 2003 | 9 | 15 |
| 2004 | 12 | 27 |
| 2005 | 13 | 25 |
| 2006 | 21 | 22 |
| 2007 | 28 | 26 |
| 2008 | 17 | 32 |
| 2009 | 21 | 43 |
| 2010 | 36 | 39 |
| 2011 | 32 | 38 |
| 2012 | 31 | 28 |
| 2013 | 30 | 41 |
| 2014 | 31 | 51 |
| 2015 | 45 | 42 |
| 2016 | 31 | 47 |
| 2017 | 51 | 39 |
| 2018 | 22 | 26 |
| 2019 | 41 | 28 |
| 2020 | 33 | 37 |
| 2021 | 43 | 34 |
| 2022 | 31 | 24 |
| 2023 | 36 | 21 |
| 2024 | 23 | 29 |
| 2025 | 25 | 25 |
| 2026 | 17 | 18 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Sidewall coring tools having active circulation features28 Jul 2026US 12,692,787 B2Schlumberger Technology Corporation
- Determination of asphaltene onset condition of reservoir fluids during downhole fluid analysis28 Jul 2026US 12,692,788 B2Schlumberger Technology Corporation
- Determining ion concentration through downhole optical spectroscopy26 May 2026US 12,638,381 B2Halliburton Energy Services.Inc.
- Pressure tuned infrared light emitting diode for downhole spectroscopy19 May 2026US 12,631,111 B2Baker Hughes Oilfield Operations LLC
- Formation fluid sampling using probe with inflatable pad24 Mar 2026US 12,584,408 B1Halliburton Energy Services.Inc.
- Formation fluid sampling using probe with inflatable pad27 Aug 2026US 2026/0251062 A1Halliburton Energy Services.Inc.
- Sampling device and online surveying and mapping system20 Aug 2026US 2026/0243167 A1China Petroleum & Chemical Corporation
- Interactive and smart workflow to measure noise free formation pressure and characterize supercharge in formation testing6 Aug 2026US 2026/0226825 A1Halliburton Energy Services.Inc.
- Interactive and smart workflow to measure noise free formation pressure and characterize supercharge in formation testing6 Aug 2026US 2026/0226826 A1Halliburton Energy Services.Inc.
- Formation fluid sampling tools and processes for using same6 Aug 2026US 2026/0226829 A1Schlumberger Technology Corporation
Most cited
By later US patents
- Method and apparatus for testing, completion and/or maintaining wellbores using a sensor device420US 5,829,520 ABaker Hughes Incorporated · 1998
- Down hole tool for determination of formation properties330US 4,860,581 ASchlumberger Technology Corporation · 1989
- Down hole method for determination of formation properties276US 4,936,139 ASchlumberger Technology Corporation · 1990
- Apparatus and method for analyzing the composition of formation fluids242US 4,994,671 ASchlumberger Technology Corporation · 1991
- Focused formation fluid sampling probe198US 6,301,959 B1Halliburton Energy Services.Inc. · 2001