POLYMER BACKFILLING COMPOSITION FOR ISOLATION OF WATER INFLUX IN HIGH TEMPERATURE OIL AND GAS WELLS

摘要

FIELD: oil and gas production. ^ SUBSTANCE: composition includes phenol-formaldehyde resin of resol type, curing agent and mineral or organic filler. Additionally composition contains an activating agent of the process - resorcin and expanding additive EA-100. As ageing agent there is used ferro-chrom-lignosulphonate FCLS-M and additionally expanding additive of type AE-100 at the following ratio of components, wt shares: phenol-formaldehyde resin PFR-3027B 100; ferro-chrom-lignosulphate FCLS-M 1.0-10; resorcin 1.5-10; filler (carbon white CW-120 or talk, or rubber powder, or chalk or barite) 4-8; expanding additive EA 5-15. ^ EFFECT: reduced water loss of backfilling solution and increased strength and adhesion characteristics of cured composition. ^ 2 cl, 3 tbl, 11 ex