High polymer content hybrid drag reducers
US7842738B2 · kind B2 · utility
5Cited by
44References
55Claims
0Family size
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Key dates
| Filing date | Oct 26, 2007 |
| Grant date | Nov 30, 2010 |
| Priority date | — |
| Expiry date | Mar 6, 2029 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/0391
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A drag reducing composition comprising particles of at least two different drag reducing polymers. The different drag reducing polymers can be formed by different processes, such as bulk polymerization or emulsion polymerization, and the particles of the different drag reducing polymers can have different mean particle sizes. The drag reducing compositions can be added to a hydrocarbon-containing fluid to decrease the pressure drop associated with the turbulent flow of the hydrocarbon-containing fluid through a conduit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.