Method of using delayed hydratable polymeric viscosifying agent in the treatment of a well or subterranean formation
US11566488B2 · kind B2 · utility
1Cited by
5References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 2, 2020 |
| Grant date | Jan 31, 2023 |
| Priority date | — |
| Expiry date | Nov 2, 2040 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B43/25
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The disclosure relates to a method of delaying viscosification of a well treatment fluid within a well or within a subterranean formation penetrated by a well by introducing into the well a hydratable viscosifying agent of particulates having a minimum of 40% retention on a 60 mesh screen and a minimum of 1% retention on a 20 mesh screen.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.