Acid removable low density well cement compositions and methods
US5298069A · kind A · utility
52Cited by
12References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 23, 1993 |
| Grant date | Mar 29, 1994 |
| Priority date | — |
| Expiry date | Mar 23, 2013 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K8/473
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Low density well cement compositions which set into hard substantially impermeable masses, but which are removable by dissolution in acid, and methods of utilizing such compositions for forming removable cement plugs or seals in subterranean zones are provided. The compositions are comprised of pumpable foamed slurries of magnesium oxychloride cement.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.