Composite cement compositions and methods of cementing and/or treating wells drilled with water-based drilling fluids
US12384952B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 18, 2022 |
| Grant date | Aug 12, 2025 |
| Priority date | — |
| Expiry date | May 18, 2042 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K8/04
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Composite cement compositions and slurries for treating a well following a water-based wellbore operation are provided and comprise cement comprising at least one of cement particles and cementitious material, water, and water swellable particulates that are embedded in the cement, derived from an elastomeric material, and present at a concentration of at least about 2% by weight of the cement but no more than about 30% by weight of the cement. Methods for treating a well drilled with a water-based drilling mud are provided and comprise pumping the composite cement compositions and slurries into the well and treating the well by allowing the composite cement compositions and slurries to set or cure after being pumped into the well.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.