Low density proppant
US7036591B2 · kind B2 · utility
88Cited by
70References
20Claims
0Family size
Assignee
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Key dates
| Filing date | Oct 10, 2002 |
| Grant date | May 2, 2006 |
| Priority date | — |
| Expiry date | Oct 10, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S507/924
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A low density, spherical proppant made from kaolin clay having an alumina content distributed homogeneously throughout the pellets, an apparent specific gravity of from about 1.60 to about 2.10 g/cc, and a bulk density of from about 0.95 to about 1.30 g/cc. The low density is achieved by controlling the time and temperature of the firing process to be from about 1200 to about 1350° C. This low density proppant is useful in hydraulic fracturing of shallow oil and gas wells.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.