| 摘要 |
FIELD: oil and gas production. ^ SUBSTANCE: composition contains carbamide-formaldehyde resin, acid hardener and filler. As hardener there is used resorcin and ferro-chrome-lignosulphonate, and as filler there is used carbon white CW-120 or talk, or rubber powder, or chalk at the following ratio of components, in weight shares: carbamide-formaldehyde resin 100; resorcin 7-15, ferro-chrome-lignosulphonate - FCLS-M 1.5-25, filler 3-8. ^ EFFECT: reduced water loss of backfilling solution and increased strength and adhesion characteristics of cured composition. ^ 2 cl, 1 tbl, 20 ex |
