Retarded acid soluble well cement compositions and methods
US5281270A · kind A · utility
81Cited by
22References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 23, 1992 |
| Grant date | Jan 25, 1994 |
| Priority date | — |
| Expiry date | Dec 23, 2012 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K8/46
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Retarded acid soluble well cement compositions which set into hard substantially impermeable masses and methods of using such compositions for forming removable cement plugs or seals in subterranean zones are provided. The compositions are comprised of magnesium oxychloride cement and a set retarder comprised of a water soluble borate and a sugar.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.