E21B 33/1272
Inflated by down-hole pumping means operated by a pipe string
Official title: {inflated by down-hole pumping means operated by a pipe string}
E21B33/1272 (Inflated by down-hole pumping means operated by a pipe string) appears on 36 US grants and 28 published applications in this corpus.
Search patents in E21B- Granted patents
- 36
- Published applications
- 28
- Assignees
- 15
- Inventors
- 79
- Latest grant
- 25 Nov 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 7 | 0 |
| 1984 | 2 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 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 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 1 |
| 2004 | 0 | 0 |
| 2005 | 1 | 0 |
| 2006 | 0 | 1 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 1 | 1 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 1 |
| 2015 | 0 | 1 |
| 2016 | 1 | 1 |
| 2017 | 0 | 2 |
| 2018 | 2 | 6 |
| 2019 | 7 | 7 |
| 2020 | 3 | 0 |
| 2021 | 0 | 1 |
| 2022 | 2 | 3 |
| 2023 | 3 | 0 |
| 2024 | 0 | 1 |
| 2025 | 2 | 0 |
| 2026 | 0 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Annular barrier with valve unit25 Nov 2025US 12,480,378 B2Welltec Manufacturing Center Completions ApS
- Well initiation service system with packer control system4 Feb 2025US 12,215,579 B1Saudi Arabian Oil Company
- Annular barrier and downhole system19 Sep 2023US 11,761,294 B2Welltec Oilfield Solutions AG
- Annular barrier and downhole system4 Jul 2023US 11,692,411 B2Welltec Oilfield Solutions AG
- Work method to design extended life slurries14 Feb 2023US 11,577,997 B2Halliburton Energy Services.Inc.
- Water Well Seal12 Mar 2026US 2026/0071513 A1Lemco Products LLC
- Seal energizing systems to maintain seal energization in a downhole well and methods to maintain seal energization in a downhole well5 Mar 2026US 2026/0063013 A1Halliburton Energy Services.Inc.
- Annular barrier with valve unit18 Apr 2024US 2024/0125210 A1Welltec Oilfield Solutions AG
- Annular barrier and downhole system20 Oct 2022US 2022/0333456 A1Welltec Oilfield Solutions AG
- Annular barrier and downhole system18 Aug 2022US 2022/0259940 A1Welltec Oilfield Solutions AG
Most cited
By later US patents
- Zonal isolation tools and methods of use52US 7,591,321 B2Schlumberger Technology Corporation · 2009
- Integrated well drilling and evaluation48US 6,236,620 B1Halliburton Energy Services.Inc. · 2001
- Down hole pump and testing apparatus31US 4,246,964 AHalliburton Company · 1981
- Inflatable packer assembly31US 5,297,633 A1994
- Downhole tool inflatable packer assembly26US 4,458,752 AHalliburton Company · 1984