| 摘要 |
FIELD: chemistry.SUBSTANCE: invention relates to oil and gas well casing. The grouting composition for cementing a low-pressure well includes 60.5-63.7 wt % portland cement, 0.61-1.53 wt % aluminium salt. The composition further includes 0.003-0.045 wt % oxyethylated alkylphenols 3-AI, 0.61-1.3 wt % carbonates, which are in the form of potassium or sodium carbonate, and water.EFFECT: low density of the grouting mortar and improved sedimentation stability thereof.1 tbl, 7 ex |
