Proppants for gel clean-up
US7721804B2 · kind B2 · utility
46Cited by
121References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 2, 2008 |
| Grant date | May 25, 2010 |
| Priority date | — |
| Expiry date | Jul 2, 2028 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2991
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Methods of incorporating a chemical breaker onto a proppant that will permit release of the breaker after the proppant has been placed in a hydraulic fracture are provided. The methods utilize a chemical breaker coated on the surface of a non-porous proppant grain or placed in the pore space of a porous proppant grain and secondarily coated with an outer layer which can be tailored to delay the release of the breaker.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.