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碱性硅酸凝胶多用于油井堵水或水井调剂。文中对碱性硅酸凝胶作为固砂剂进行了研究，探讨了碱性硅酸凝胶作固砂剂的机理，并与酸性硅酸凝胶固砂剂对比。结果表明：碱性硅酸凝胶固砂剂具有成本低、无腐蚀、固结强度大等优点，可在油田固砂中推广应用。
Alkaline silicate gel used to block wells or wells swap. In this paper, basic silicic acid gel as a sand-fixing agent was studied. The mechanism of alkaline silicic acid gel as a sand-fixing agent was discussed and compared with that of acidic silicic acid gel sand-fixing agent. The results show that alkaline silicate sand fixing agent has the advantages of low cost, no corrosion and high consolidation strength, which can be widely applied in the sand stabilization of oilfields.