New, chemically crosslinked polyvinyl alcohol (pva), process...

Details New, chemically crosslinked polyvinyl alcohol (pva), process... New, chemically crosslinked polyvinyl alcohol (pva), process...

C - Chemistry, Metallurgy

09

K

C09K 8/487 (2006.01) C04B 24/26 (2006.01) E21B 33/13 (2006.01)

Patent

CA 2118070

The invention relates to a new, chemically crosslinked PVA. Its application is that of a fluid loss control agent in fluids used in the oil industry, in particular cement slurries, separating fluids, or "spacers", and drilling muds. Its advantages are that it does not delay the setting of the cement, that it has high temperature properties that are relatively insensitive to external conditions.

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