Low temperature hydrocarbon gel II
US8951941B2 · kind B2 · utility
1Cited by
24References
10Claims
0Family size
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Key dates
| Filing date | Jun 27, 2011 |
| Grant date | Feb 10, 2015 |
| Priority date | — |
| Expiry date | Aug 3, 2033 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S507/923
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A composition useful for crosslinking phosphate esters in hydrocarbon gels used in formation fracturing performs especially well in cold temperatures, such as temperatures lower than (−)20° C. Methods of making the crosslinking composition and the gel are described; also methods of fracturing subterranean formations. Specific forms of ferric sulfate and ferric ammonium citrate are useful as ingredients of the crosslinking composition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.