Ferric alkyl amine citrates and methods of making them
US5693837A · kind A · utility
88Cited by
15References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 22, 1996 |
| Grant date | Dec 2, 1997 |
| Priority date | — |
| Expiry date | Jul 22, 2016 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S507/922
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
This invention relates to improved hydrocarbon gels which find use in the fracturing of petroleum producing formations. In particular it relates to the use of a defined class of gelling agents for hydrocarbons which provide excellent results in such fracturing. The gelling agents comprise combinations of selected orthophosphate esters and ferric ammonium citrate or lower alkyl amine derivative thereof. The lower alkyl amine derivatives are referred to as ferric alkylamine citrates.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.