Волго-Уральский научно-исследовательский и проектный институт по добыче и переработке сероводородсодержащих газов
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Soil Conditioners And Soil-Stabilizing Materials
(AREA)
Excavating Of Shafts Or Tunnels
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Abstract
FIELD: compositions for drilling boreholes. SUBSTANCE: drilling mud has (in wt %): clay 10-30; lime or gypsum or calcium chloride 0.2-1.5; caustic soda 0.1-0.3; thinner 0.5-2.0; modified carboxymethylcellulose trade-named Karboaluminat 0.4-1.5; water to the balance. As a thinner FKhAS, KhLS, SSB, and other reagents may be used. EFFECT: increased inhibiting properties and performance. 3 tbl