Calcium carbonate/polymer particulate additives for use in subterranean operations
US11932808B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 28, 2018 |
| Grant date | Mar 19, 2024 |
| Priority date | — |
| Expiry date | Apr 28, 2039 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K2208/18
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Particulate additives that may be useful in mitigating fluid loss and/or as bridging agents or diverting agents in subterranean treatment fluids such as drilling fluids. In some embodiments, the particulate additives include a polymeric material and calcium carbonate disposed on at least a portion of the outer surface of the polymer core wherein the particulates have a particle size (d50) of from about 2 μm to about 1600 μm in diameter. In some embodiments, the methods include providing a treatment fluid that includes the base fluid and the particulate additives and introducing the treatment fluid into at least a portion of a subterranean formation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.