E21B 33/1285
By fluid pressure
Official title: {by fluid pressure}
E21B33/1285 (By fluid pressure) appears on 317 US grants and 353 published applications in this corpus.
Search patents in E21B- Granted patents
- 317
- Published applications
- 353
- Assignees
- 128
- Inventors
- 558
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1984 | 2 | 0 |
| 1985 | 2 | 0 |
| 1986 | 1 | 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 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 2 | 0 |
| 1999 | 2 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 1 |
| 2002 | 1 | 0 |
| 2003 | 3 | 2 |
| 2004 | 2 | 5 |
| 2005 | 1 | 4 |
| 2006 | 4 | 0 |
| 2007 | 2 | 2 |
| 2008 | 2 | 8 |
| 2009 | 0 | 7 |
| 2010 | 8 | 5 |
| 2011 | 7 | 10 |
| 2012 | 6 | 7 |
| 2013 | 2 | 12 |
| 2014 | 8 | 22 |
| 2015 | 13 | 35 |
| 2016 | 19 | 25 |
| 2017 | 25 | 23 |
| 2018 | 23 | 34 |
| 2019 | 36 | 27 |
| 2020 | 31 | 23 |
| 2021 | 32 | 20 |
| 2022 | 18 | 25 |
| 2023 | 12 | 14 |
| 2024 | 16 | 19 |
| 2025 | 23 | 12 |
| 2026 | 11 | 11 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Anti-preset mechanism for production packers8 Sep 2026US 12,729,598 B2Halliburton Energy Services.Inc.
- Downhole tool and method of use25 Aug 2026US 12,716,317 B2The WellBoss Company, LLC
- Bridge plug with bi-directional high strength high expansion retrievable anchor4 Aug 2026US 12,698,688 B1Weatherford Technology Holdings, LLC
- Downhole fracturing zone data logger and downhole fracturing zone data acquisition system4 Aug 2026US 12,698,705 B2Zhejiang Tensing Science and Technology Co., Ltd.
- Downhole tool and method of use14 Jul 2026US 12,680,416 B2The WellBoss Company, LLC
- Downhole tool and method of use8 Oct 2026US 2026/0309000 A1The WellBoss Company, LLC
- Pump down well stimulation24 Sep 2026US 2026/0286814 A1Torsch Inc.
- Anti-preset mechanism for production packers27 Aug 2026US 2026/0251033 A1Halliburton Energy Services.Inc.
- Pressure intensifier module for additional setting force in a retrievable bridge plug30 Jul 2026US 2026/0218580 A1Halliburton Energy Services.Inc.
- Well tool device preventing backlash of ratchet16 Jul 2026US 2026/0201762 A1Interwell Norway AS
Most cited
By later US patents
- Metal seal well packer240US 5,685,369 AABB Vetco Gray Inc. · 1997
- Metal sealing wireline plug97US 5,901,787 ATuboscope (UK) Ltd. · 1999
- Alternative packer setting method78US 7,025,146 B2Baker Hughes Incorporated · 2006
- Self-set bridge plug63US 7,017,672 B2Go II Oil Tools, Inc. · 2006
- Ball seat having segmented arcuate ball support member62US 7,644,772 B2Baker Hughes Incorporated · 2010