Oil-soluble thermosensitive resin lost circulation material for protecting a reservoir as well as preparation method and application thereof
US12043742B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 26, 2022 |
| Grant date | Jul 23, 2024 |
| Priority date | — |
| Expiry date | Sep 30, 2042 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L2205/03
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
An oil-soluble thermosensitive resin lost circulation material for protecting a reservoir includes the following raw materials in parts by weight: 40-60 parts of resin matrix, 15-40 parts of modified asphalt, 5-12 parts of viscosity modifier, 2-5 parts of cross-linking agent, 6-15 parts of softening point modifier, and 1-3 parts of dispersant; it further provides a method for preparing the resin lost circulation material; the resin lost circulation material can melt and adhere in different temperature ranges, rapid plugging is realized, and the plugging time is long; the oil-soluble thermosensitive resin lost circulation material can be dissolved by oil flow during oil well production, so that the reservoir permeability is recovered, so as to achieve the purpose of protecting the hydrocarbon reservoir.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.