| 摘要 |
Method of well cementing with a foamed slurry having a very low water content. When based on ordinary cement, the solid fraction of the slurry includes (by volume) 20-35% Portland cement, 35-65% particles ranging from 200 mum to 600 mum, and 5% to 25% of fine particles in the range 0.5 mum to 5 mum and the water content is less than 50% by volume. When based on micro-cement, the solid fraction includes (by volume) 50-75% micro-cement, 15-40% fine particles in the range 0.5 mum to 5 mum, and 0-20% particles in the rang 3 nanometers to 60 nanometers and the water content is less than 72% by volume. |
