Remote delivery of latex drag-reducing agent without introduction of immiscible low-viscosity flow facilitator
US7361628B2 · kind B2 · utility
8Cited by
16References
71Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 30, 2004 |
| Grant date | Apr 22, 2008 |
| Priority date | — |
| Expiry date | Apr 1, 2025 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF17D1/17
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Latex drag reducers and systems for delivering latex drag reducers are disclosed. The latex drag reducers comprise a polymer that is formed via an emulsion polymerization reaction dispersed in a continuous phase and can undergo subsequent modification in order to increase the solubility of the polymer in hydrocarbons. The polymers generally present a particle size of less than about 1000 nm and are suitable for delivery to a subsea flowline via a small diameter conduit of an umbilical line without an unacceptable level of pressure drop or plugging of the conduit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.