GROUTING MORTAR FOR CEMENTING OIL AND GAS WELLS

摘要

FIELD: drilling of oil and gas wells. SUBSTANCE: grouting mortar for cementing oil and gas wells contains, mas.%: oil well cement 15.8-27.5; sodium chloride 3.8-6.1; fly ash with content of CaO+MgO from 6.66-9.60 13.2-19.3; cement dust from electrostatic precipitators of rotating cement kilns of cement plants 13.2-19.3; the balance, water. Oil well cement, fly ash and cement dust are mixed and the mixture is introduced into aqueous solution of sodium chloride. EFFECT: higher strength and corrosion resistance of produced stone. 1 tbl