Foam cement slurry.

TH121145 Well 193.7mm Two-Stage Cementing: The first application of foam cement slurry for two-stage thermal insulation cementing in the Tarim Basin. Double-stage collar location at 4000m, circulating temperature of 73°C, base slurry density of foam cement slurry is 1.50g/cm³, foam cement slurry density is 0.8 g/cm³, and the cementing quality excellence rate for the cementing section is 95.1%. Foam cement slurry has been applied in more than 40 wells in recent years.