Methods and compositions for carbon dioxide-foamed lost circulation materials
US12116526B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 24, 2023 |
| Grant date | Oct 15, 2024 |
| Priority date | — |
| Expiry date | Mar 24, 2043 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B21/003
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Methods and compositions including introducing a lost circulation material to a zone of interest in a subterranean formation via a wellbore, the zone of interest comprising depleted zones, zones of low pressure, lost circulation zones, fractured zones, and any combination thereof; wherein the lost circulation material comprises an epoxidized linear α-olefin; a surfactant; a curing agent; and a carbon dioxide gas-generating compound comprising sodium bicarbonate; heating the lost circulation material; and allowing the epoxidized linear α-olefin to polymerize to a resin and the carbon dioxide gas-generating compound to produce a gas to form a foamed resin in the zone of interest, thereby mitigating a flow of fluids from the wellbore into the subterranean formation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.