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High temperature resistant admixture products
Summary:High temperature resistant water loss reducing agent BS100L-G: AMPS type water loss reducing agent with special functional groups. At present, there are two main categories commonly used in China, cellulose and AMPS. Cellulose has poor temperature resistance, AMPS has certain temperature resistance, but the thermal dilution phenomenon is obvious (the sedimentation stability of cement slurry becomes worse, the water loss becomes larger, the thickening time becomes longer, etc.).
High temperature resistant water loss reducing agent BS100L-G: AMPS type water loss reducing agent with special functional groups. At present, there are two main categories commonly used in China, cellulose and AMPS. Cellulose has poor temperature resistance, AMPS has certain temperature resistance, but the thermal dilution phenomenon is obvious (the sedimentation stability of cement slurry becomes worse, the water loss becomes larger, the thickening time becomes longer, etc.).
High temperature retarder BS200-G: AMPS retarder with special functional groups.
High temperature isolation agent GL-G: composite polymer materials.
Since July 15, 2008, when the experimental temperature of cement slurry in the 6217.27m deep well 146.1mm liner hanging cementing well of Jianshen 1 in Jiannan structure of Jianghan oilfield reached 135 ℃ for the first time, there were 111 wells with the experimental temperature of high temperature and ultra-high temperature cement slurry above 130 ℃, including 11 wells with the experimental temperature above 150 ℃. The qualified rate was 96.40 %, and the excellent rate was 63.06%.
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