Method of cementing an area of a borehole with aqueous...

Wells – Processes – Cementing – plugging or consolidating

Reexamination Certificate

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C166S291000, C166S300000

Reexamination Certificate

active

07007754

ABSTRACT:
A storable cement system comprises a suspending agent, a cement spacer and water. The composition may further optional contain a surfactant and/or an organic solvent and/or a weighting material. The suspending agent is preferably a carrageenan or scleroglucan. The cement system may be stored for an extended period of time prior to being interposed between a cement slurry and a drilling fluid. As such, the aqueous cement system may be made off-site and used when desired for preventing contact between non-compatible hydrocarbonaceous and aqueous fluids.

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patent: 0814232 (1998-01-01), None

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