Self-suspending proppant for hydraulic fracturing
US10190040B2 · kind B2 · utility
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Key dates
| Filing date | Mar 27, 2017 |
| Grant date | Jan 29, 2019 |
| Priority date | — |
| Expiry date | Mar 27, 2037 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B43/267
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A proppant composition includes: a volume of water; a self-suspending proppant, including a plurality of proppant granules each with a hydrophilic polymer coating, the hydrophilic polymer coatings of the self-suspending proppant together defining a total polymer volume; and an untreated proppant, where a concentration of the self-suspending proppant in the water is sufficient (i) to reduce the water to an unabsorbed volume of less than 25% of the volume of water and (ii) to hydrate at least 75% of the total polymer volume.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.