E21B 49/083
Samplers adapted to be lowered into or retrieved from a landing nipple
Official title: {Samplers adapted to be lowered into or retrieved from a landing nipple, e.g. for testing a well without removing the drill string}
E21B49/083 (Samplers adapted to be lowered into or retrieved from a landing nipple) appears on 23 US grants and 12 published applications in this corpus.
Search patents in E21B- Granted patents
- 23
- Published applications
- 12
- Assignees
- 13
- Inventors
- 52
- Latest grant
- 30 Sep 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1980 | 2 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 2 | 0 |
| 2001 | 2 | 0 |
| 2002 | 0 | 0 |
| 2003 | 1 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 1 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 1 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 1 |
| 2020 | 1 | 3 |
| 2021 | 1 | 1 |
| 2022 | 1 | 2 |
| 2023 | 1 | 1 |
| 2024 | 3 | 2 |
| 2025 | 2 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Processes for injection of fluids into a wellbore via drill pipe30 Sep 2025US 12,428,928 B2Schlumberger Technology Corporation
- Natural hydrogen gas sampling system and method8 Apr 2025US 12,270,298 B2Expro North Sea Limited
- Processes for injection of fluids into a wellbore5 Nov 2024US 12,134,949 B2Schlumberger Technology Corporation
- Downhole core plug apparatuses and related methods24 Sep 2024US 12,098,625 B2Abu Dhabi National Oil Company
- Predicting contamination and clean fluid properties from downhole and wellsite gas chromatograms12 Mar 2024US 11,927,716 B2Halliburton Energy Services.Inc.
- Processes for injection of fluids into a wellbore via drill pipe20 Feb 2025US 2025/0059847 A1Schlumberger Technology Corporation
- Natural hydrogen gas sampling system and method5 Dec 2024US 2024/0401478 A1Expro North Sea Limited
- Processes for injection of fluids into a wellbore27 Jun 2024US 2024/0209728 A1Schlumberger Technology Corporation
- Predicting Contamination and Clean Fluid Properties From Downhole and Wellsite Gas Chromatograms13 Jul 2023US 2023/0221459 A1Halliburton Energy Services.Inc.
- Downhole core plug apparatuses and related methods20 Oct 2022US 2022/0333453 A1Abu Dhabi National Oil Company
Most cited
By later US patents
- Device for taking ground water samples in soil and rock41US 4,438,654 A1984
- In situ borehole sample analyzing probe and valved casing coupler therefor30US 6,062,073 AWestbay Instruments Ltd. · 2000
- Measurement port coupler and probe interface19US 5,704,425 AWestbay Instruments Ltd. · 1998
- Method and apparatus for retrieving fluid samples during drill stem tests19US 6,029,744 A2000
- Measuring casing coupler apparatus14US 4,204,426 AWestbay Instruments Ltd. · 1980