| PATENT ASSIGNEE'S COUNTRY | USA |
| UPDATE | 10.99 |
| PATENT ASSIGNEE | This data is not available for free |
| PATENT CLAIMS |
A universal additive for improving the properties of a cement slurry to be used for cementing a well comprising - Ferrous chloride, ferric chloride or mixt (0.5-30 parts) - Alkali or alkaline-earth metal halide (5-60 parts) - Organic acid which controls visc. of slurry (0.01-10 parts) - Hydratable polymer which increases visc. of slurry (1-50 part) |
| PATENT PHOTOCOPY | Available on request |
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