Laboratory Research on a New Styrene Acrylic Latex Cement Slurry System

In order to raise the applied temperature of the styrene acrylic latex and meet the needs of high-temperature cementing,a new high temperature resistant styrene acrylic latex GR was synthesized from styrene,butyl acrylate,and functional monomer,then 500 kg weight pilot product was produced.The properties(water-loss control property at high temperature,rheology,static gelling strength,stability,integrated engineering performances)of the cement slurry sample with styrene acrylic latex GR were evaluated then compared with that from pilot product.It shows that:fluid loss of the cement slurry with styrene acrylic latex GR can be controlled under 50 mL,while temperature tolerance is up to 150 ℃;It has good rheology,right-angle cementing,good anti-channeling performance and stability;and laboratory samples and pilot product have consistent performance.Comprehensive analysis shows that styrene acrylic latex GR can meet the requirements of cementing below 150 ℃.