Delayed breaking of gelled hydrocarbon fracturing fluid
US5846915A · kind A · utility
38Cited by
18References
30Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 26, 1995 |
| Grant date | Dec 8, 1998 |
| Priority date | — |
| Expiry date | Oct 26, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S507/922
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Hydrocarbon fracturing fluids are made by combining organic phosphate esters with polyvalent metal salts in hydrocarbon carriers to form gels; breaking of the gel is retarded or otherwise controlled over a wide range of water concentrations through the use of slowly soluble alkaline earth metal compounds, preferably hard burned magnesium oxide, which may be added along with the gel component.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.