High temperature cement mud spacer
US4276182A · kind A · utility
22Cited by
5References
15Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 29, 1979 |
| Grant date | Jun 30, 1981 |
| Priority date | — |
| Expiry date | May 29, 1999 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S507/928
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A spacer composition for use in borehole cementing operations is disclosed which has excellent high temperature stability and compatability with cement slurries and drilling fluids. The spacer composition comprises a single phase water base system containing stabilized attapulgite clay.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.