Spacer fluids

Details Spacer fluids Spacer fluids

1991-04-02

1992-05-19

Suchfield, George A.

Wells

Processes

Cementing, plugging or consolidating

252 8551, E21B 3306

Patent

active

051139430

ABSTRACT:
Spacer fluids providing an effective buffer between drilling fluids and cement slurries during well completion. The spacer fluids comprise a sulfonated styrene copolymer dispersant and one or more additional components such as surfactants, viscosifiers and weighting materials to form a rheologically compatible fluid between the drilling fluid and the cement slurry.

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