| abstract |
The invention discloses an integrated styrene-acrylic latex, a preparation method and an application. The styrene-acrylic latex is obtained by polymerizing raw materials including the following components: 10-40% of styrene; 8-30% of alkyl methacrylate; 1-5% of allyl polyether macromonomer; functional 1-10% of water-soluble monomer; 1-5% of anionic emulsifier; 0.5-2% of non-ionic emulsifier; 0.1-2% of cross-linking agent; 0.05-2% of chain transfer agent; 0.5-3% of initiator; The balance is deionized water. The styrene-acrylic latex of the present invention does not need additional compound stabilizer, can improve the bonding strength of the first and second cemented surfaces of cementing, reduce the permeability of cement stone, reduce the occurrence of oil and gas channeling, and can increase the cement stone's permeability. Elasticity and toughness, reduce the fracture degree of cement stone in the subsequent cementing operations such as perforation and fracturing, maintain the overall stability of the cement sheath, and improve the cementing quality. |