Oil mud displacement with blast furnace slag/surfactant
US5330006A · kind A · utility
16Cited by
32References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 25, 1993 |
| Grant date | Jul 19, 1994 |
| Priority date | — |
| Expiry date | Feb 25, 2013 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02W30/91
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A cementitious slurry containing blast furnace slag and a surfactant is utilized to displace an oil based drilling fluid without causing contamination by the blast furnace slag cement. In a specific embodiment, a cementitious slurry comprising blast furnace slag, a surfactant and water is used in the cementing of an annulus surrounding a casing or liner wherein a synthetic oil-containing drilling fluid is present.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.