Cement paste for well cementation and preparation method thereof and application thereof

The invention discloses cement paste for well cementation and a preparation method thereof and application thereof. The cement paste for well cementation comprises oil well cement, a fluid loss agent,resin powder, a resin dispersing agent, a nano-silicon reinforcing agent, a cement slurry dispersing...

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Hauptverfasser: ZHANG FUMING, WANG XUESHAN, SONG WEIKAI, LIU MENGTAO, DAI DAN
Format: Patent
Sprache:chi ; eng
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Beschreibung
Zusammenfassung:The invention discloses cement paste for well cementation and a preparation method thereof and application thereof. The cement paste for well cementation comprises oil well cement, a fluid loss agent,resin powder, a resin dispersing agent, a nano-silicon reinforcing agent, a cement slurry dispersing agent, a defoaming agent and slurry preparation water, and can also comprise any one or more of hollow glass beads, a composite reinforcing agent, an anti-channeling reinforcing agent and a retarder. The preparation method thereof comprises the following steps: mixing and uniformly stirring a fluid loss agent, resin powder, a resin dispersing agent, a nano silicon reinforcing agent, a cement slurry dispersing agent, a defoaming agent, slurry preparation water, an optional anti-channeling reinforcing agent and a retarder to obtain a first mixture; mixing oil well cement with optional hollow glass beads and a composite reinforcing agent, and uniformly stirring the above to obtain a second mixture; and mixing the fir