Schlumberger

Product Sheet: BLOK-R750

Date: 10/1/2005

Download: BLOK-R 750 (0.57 MB PDF)

Blok-R750 additive is ground marble that is a high-purity, acid soluble, calcium carbonate used for wellbore strengthening in conventional drilling fluids. Because of its high purity, it is not only used for wellbore strengthening applications but also as a bridging agent to prevent lost circulation in reservoir drill-in fluids and workover/completion fluids. Higher purity also provides better acid solubility.

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