Quick Setting Cement (QSC) is a special cement formulation which rapidly develops compressive strength and significantly reduces waiting on cement (WOC) time compared to conventional cement systems. The description of the cement properties and case histories are given.

The case histories show the advantages of QSC system for use in the following situations.

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    On lost circulation zones encountered while drilling.

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    To stabili ze unconsolidated ground when drilling through fills associated with strip mining.

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    For lower drilling costs when open mines are encountered by reducing the WOC time when an additional string of casing has to be set.

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    To shut off large water flows that would otherwise prohibit further drilling.

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