Proppants and anti-flowback additives comprising flash calcined clay, methods of manufacture, and methods of use
US10093849B2 · kind B2 · utility
3Cited by
11References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 3, 2013 |
| Grant date | Oct 9, 2018 |
| Priority date | — |
| Expiry date | Jul 17, 2035 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B2235/96
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Spherical and rod-shaped proppants and anti-flowback agents made from flash calcined clays, such as flash calcined kaolin, possess high strength and high conductivity. The starting material may optionally be milled to achieve better compacity and crush resistance in the final proppant or anti-flowback agent. A fracturing fluid may include the rods or spheres alone, or in combination with each other or other proppants or anti-flowback agents of different shapes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.