Gelled hydrocarbons for oilfield processes, phosphate ester compounds useful in gellation of hydrocarbons and methods for production and use thereof
US7972996B2 · kind B2 · utility
1Cited by
7References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 9, 2009 |
| Grant date | Jul 5, 2011 |
| Priority date | — |
| Expiry date | May 11, 2029 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S507/904
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Phosphate esters useful for gelling hydrocarbons in combination with a metal source are disclosed along with methods of preparation of the phosphate esters. Fouling in oil refinery towers has been attributed due to distillation of impurities present in phosphate esters used to gel hydrocarbons for oil well fracturing. The improved method of preparation of the phosphate ester results in a product that substantially reduces or eliminates volatile phosphorus, which is phosphorus impurities that distill up to 250° C., and increases the high temperature viscosity of the hydrocarbon gels formed using the phosphate esters.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.