Diverting agent and method of filling fracture in well using same
US12410363B2 · kind B2 · utility
0Cited by
1References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 9, 2021 |
| Grant date | Sep 9, 2025 |
| Priority date | — |
| Expiry date | Aug 9, 2041 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K8/70
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A diverting agent is provided which does not completely dissolve in water and seawater in an ultra-low temperature to low temperature range (5° C. to 30° C.) for a certain period of time (about 5 minutes to 3 hours), and is quickly dissolved and removed after a certain period of time in an excavation method using a hydraulic fracturing method. Also provided is a diverting agent containing a polyvinyl alcohol-based resin having 2.3 mol % to 15 mol % of a hydrophilic modifying group in a molecular structure thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.