C09K 2208/06
Structured surfactants, i.e. well drilling or treating fluids with a lamellar or
Official title: Structured surfactants, i.e. well drilling or treating fluids with a lamellar or spherulitic phase
C09K2208/06 (Structured surfactants, i.e. well drilling or treating fluids with a lamellar or) appears on 35 US grants and 35 published applications in this corpus.
Search patents in C09K- Granted patents
- 35
- Published applications
- 35
- Assignees
- 24
- Inventors
- 118
- Latest grant
- 17 Jun 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 1 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 1 |
| 2015 | 0 | 0 |
| 2016 | 0 | 1 |
| 2017 | 1 | 2 |
| 2018 | 0 | 3 |
| 2019 | 4 | 6 |
| 2020 | 2 | 8 |
| 2021 | 7 | 5 |
| 2022 | 4 | 1 |
| 2023 | 9 | 4 |
| 2024 | 2 | 2 |
| 2025 | 1 | 1 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Polyacrylamide-based symmetric branched polymer surfactant and a process for preparing the same and use thereof17 Jun 2025US 12,331,246 B2China Petroleum & Chemical Corporation
- Enhanced oil recovery with Janus nanoparticles17 Sep 2024US 12,091,611 B2Saudi Arabian Oil Company
- Superheated phase changing nanodroplets for hydrocarbon reservoir applications19 Mar 2024US 11,932,810 B2Saudi Arabian Oil Company
- Enhanced oil recovery with janus nanoparticles28 Nov 2023US 11,827,850 B2Saudi Arabian Oil Company
- Scale control in production fluids10 Oct 2023US 11,781,225 B2Saudi Arabian Oil Company
- Scale inhibitor squeeze treatment system and method of using the same9 Jul 2026US 2026/0193962 A1Halliburton Energy Services.Inc.
- Nanobubble for improving scavenger efficiency13 Nov 2025US 2025/0346800 A1Halliburton Energy Services.Inc.
- Environmentally friendly nanoshale inhibitor in aqueous-based wellbore fluids2 May 2024US 2024/0141223 A1Saudi Arabian Oil Company
- Enhanced Oil Recovery with Janus Nanoparticles1 Feb 2024US 2024/0034925 A1Saudi Arabian Oil Company
- Polyacrylamide-based symmetric branched polymer surfactant and a process for preparing the same and use thereof7 Dec 2023US 2023/0392069 A1China Petroleum & Chemical Corporation
Most cited
By later US patents
- Functional fluids and liquid cleaning compositions and suspending media61US 5,807,810 AAlbright & Wilson Limited · 1998
- Functional fluids and liquid cleaning compositions and suspending media42US 5,964,692 AAlbright & Wilson Limited · 1999
- Drilling fluid concentrates22US 6,194,354 B1Albright & Wilson UK Limited · 2001
- Method of preparing a drilling fluid comprising structured surfactants15US 6,166,095 AAlbright & Wilson UK Limited · 2000
- Enhanced oil recovery techniques using liposomes12US 7,798,219 B12010