Set-delayed cement compositions comprising pumice and associated methods
US9255454B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 6, 2013 |
| Grant date | Feb 9, 2016 |
| Priority date | — |
| Expiry date | Apr 3, 2034 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K8/467
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Set-delayed cement compositions and methods of using set-delayed cement compositions in subterranean formations. Embodiments include a method of drilling a wellbore in a subterranean formation comprising: circulating a drilling fluid comprising a set-delayed cement composition in the wellbore while drilling the wellbore, wherein the set-delayed cement composition comprises: pumice, hydrated lime, a set retarder, and water. A method of displacing a fluid in a wellbore comprising: introducing a spacer fluid comprising a set-delayed cement composition into a wellbore such that the spacer fluid displaces one or more prior fluids from the wellbore, and wherein the set-delayed cement composition comprises: pumice, hydrated lime, a set retarder, and water.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.