Low volatile phosphorous gelling agent
US9518212B2 · kind B2 · utility
2Cited by
7References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 18, 2013 |
| Grant date | Dec 13, 2016 |
| Priority date | — |
| Expiry date | May 11, 2034 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K8/64
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Liquid hydrocarbons are gelled by the introduction of a phosphate ester and a crosslinking agent for use in oil recovery. Generally a proppant, delayed gel breaker and other modifiers are added to the gelled hydrocarbon to improve the oil recovery process. The phosphate ester used in this method and composition for oil recovery has low volatility and good stability during hydrocarbon distillation resulting in improved distillation efficiency in a refinery.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.