Sequenced polymers for monitoring the filtrate
US11427747B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 15, 2020 |
| Grant date | Aug 30, 2022 |
| Priority date | — |
| Expiry date | Oct 24, 2040 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B2103/46
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
The present invention relates to the use of a sequenced polymer as an agent for monitoring the filtrate in a fluid injected under pressure into an oil rock, wherein the fluid comprises solid particles and/or is brought into contact with solid particles within the oil rock after being injected, the polymer comprising at least three blocks, including: at least one first block which is adsorbed, preferably irreversibly, onto at least some of the particles (p); a second block (B) having a composition other than that of the first and a mean molecular weight of more than 10,000 g/mol, and which is soluble in the fluid (F); and at least one third block of type (A) or type (B).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.