Star macromolecules for wellbore applications
US11041106B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 1, 2020 |
| Grant date | Jun 22, 2021 |
| Priority date | — |
| Expiry date | Apr 1, 2040 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K2208/18
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The present disclosure provides treatment fluids that comprise star macromolecules as a fluid loss additive or a viscosifier. An embodiment of the present disclosure is a method comprising: providing a treatment fluid that comprises: an aqueous base fluid; and a star macromolecule that comprises: a hydrophilic polymeric core, a first group of polymeric arms attached to the core wherein each of the arms in the first group consists of hydrophilic monomers, and a second group of polymeric arms attached to the core wherein each of the arms in the second group comprises at least one hydrophilic homopolymeric segment and at least one hydrophobic homopolymeric segment; and introducing the treatment fluid into a wellbore penetrating at least a portion of a subterranean formation. Another embodiment of the present disclosure is a method comprising: providing a treatment fluid that comprises: a non-aqueous base fluid; and a star macromolecule that comprises: a polymeric core, a first group of polymeric arms attached to the core wherein each of the arms in the first group consists of hydrophobic monomers, and a second group of polymeric arms attached to the core wherein each of the arms in th…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.