E21B 49/084
With means for conveying samples through pipe to surface
Official title: {with means for conveying samples through pipe to surface}
E21B49/084 (With means for conveying samples through pipe to surface) appears on 170 US grants and 119 published applications in this corpus.
Search patents in E21B- Granted patents
- 170
- Published applications
- 119
- Assignees
- 79
- Inventors
- 302
- Latest grant
- 28 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1981 | 1 | 0 |
| 1982 | 2 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 2 | 0 |
| 1988 | 2 | 0 |
| 1989 | 3 | 0 |
| 1990 | 1 | 0 |
| 1991 | 3 | 0 |
| 1992 | 4 | 0 |
| 1993 | 7 | 0 |
| 1994 | 3 | 0 |
| 1995 | 7 | 0 |
| 1996 | 3 | 0 |
| 1997 | 3 | 0 |
| 1998 | 5 | 0 |
| 1999 | 7 | 0 |
| 2000 | 5 | 0 |
| 2001 | 1 | 0 |
| 2002 | 8 | 7 |
| 2003 | 3 | 1 |
| 2004 | 4 | 12 |
| 2005 | 4 | 3 |
| 2006 | 7 | 1 |
| 2007 | 2 | 4 |
| 2008 | 2 | 5 |
| 2009 | 3 | 3 |
| 2010 | 5 | 3 |
| 2011 | 3 | 4 |
| 2012 | 3 | 1 |
| 2013 | 0 | 6 |
| 2014 | 2 | 10 |
| 2015 | 3 | 5 |
| 2016 | 5 | 4 |
| 2017 | 8 | 7 |
| 2018 | 5 | 6 |
| 2019 | 5 | 5 |
| 2020 | 7 | 7 |
| 2021 | 6 | 6 |
| 2022 | 5 | 6 |
| 2023 | 4 | 3 |
| 2024 | 4 | 3 |
| 2025 | 6 | 6 |
| 2026 | 3 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Sampling through perforation guns with flushing28 Jul 2026US 12,692,786 B2Schlumberger Technology Corporation
- Drill bit assembly for reverse circulation hammer2 Jun 2026US 12,644,338 B2Mincon International Limited
- Method for packaging components, assemblies and modules in downhole tools10 Mar 2026US 12,571,265 B2Baker Hughes Holdings LLC
- Continuous characterization and communication of chemical tracer30 Dec 2025US 12,509,987 B2Patina IP LLC
- Multi-pump integrated mixed fluid delivery device16 Sep 2025US 12,416,299 B2Xi'an Zhenyu Electron Engineering Co., Ltd.
- Continuous characterization and communication of chemical tracer9 Jul 2026US 2026/0193981 A1Patina IP LLC
- Sampling through perforation guns with flushing13 Nov 2025US 2025/0347223 A1Schlumberger Technology Corporation
- Rig-up for pressure control30 Oct 2025US 2025/0334013 A1Interwell P&A AS
- Drill bit assembly for reverse circulation hammer7 Aug 2025US 2025/0250862 A1Mincon International Limited
- Low Emission Multi-Zone Hydrocarbon Reservoir Testing26 Jun 2025US 2025/0207496 A1Halliburton Energy Services.Inc.
Most cited
By later US patents
- Methods of downhole testing subterranean formations and associated apparatus therefor90US 6,325,146 B1Halliburton Energy Services.Inc. · 2001
- Automated groundwater monitoring system and method78US 6,021,664 AThe United States of America as represented by the Secretary of the Interior · 2000
- Method of underground fluid sampling72US 4,804,050 AK-V Associates, Inc. · 1989
- Method and apparatus for gas displacement well systems72US 7,111,682 B22006
- Method and apparatus for gas displacement well systems62US 7,360,597 B22008