GROUTING MORTAR Russian patent published in 1997 - IPC

FIELD: well construction; applicable in preparation of plunging materials for cementing oil, gas and other wells. SUBSTANCE: grouting mortar contains, mas.p.p.: portland cement 100; aluminium powder 0.3-0.5 anionic surfactant - reagent ML-72 - mixture of sodium alkyl sulfonate and sodium alkyl benzenesulfonate and polyglycol ether of di-tert-butylphenol 0.15-0.025; nonionic surfactant - regent HG-12 - hydroxyethylated isopropyl phenol based on trimer propylene 0.015-0.025; plasticizer - nitrilotrimenthylphosphonic acid 0.02-0.05 and water 50. EFFECT: higher efficiency. 1 tbl