| 摘要 |
FIELD: cementing compositions for cementing wells in oil and gas industry. ^ SUBSTANCE: cementing solution includes cement, water and admixture, as admixture the solution contains incidental product from geptyl production, in mass %, sulfurous sodium - Na2SO4 95,5-97,0, sodium nitrate - NaNO3 0,5-1,0, sodium chloride NaCl 0,6-1,2, sulfurous calcium - CaSO4 0,4-1,0, sodium nitrite - NaNO2 not more than 0,5, iron oxide Fe2O3 not more than 0,03, magnesium ions Mg2+ not more than 0,1, water-insoluble remainder not more than 0,4 with following ration of components, mass parts: cement 100, aforementioned side product of geptyl production 2,0-5,0, water 40-50. ^ EFFECT: increased well cementation quality due to usage of plastic cement solution with controllable time of stiffening; high hardness and adhesion properties of cement stone. ^ 2 tbl |
