| 摘要 |
FIELD: well drilling engineering. ^ SUBSTANCE: invention relates to lining pf oil, gas, and hydrothermal wells with temperature 300°C at bottom level, in particular to control properties of slag-based high-temperature grouting mortars by means of reagent composed of carboxymethylcellulose, 80-91%, and reagent "Krep", 9-20%. Reagent of invention may further contain 2-10% of phosphone complexone. ^ EFFECT: increased sedimentation stability even at high temperatures and pressures in well, increased plasticizing of mortar at low water/cement ratios, and reduced contraction effect. ^ 2 cl, 1 tbl, 3 ex |
