the research of permeable microfine cement technology which can be apt to extensive purview of temperature and different demand in the sand control ;

• 研究能适合较宽温度范围、不同出砂油井防砂需要的可渗透微细水泥防砂技术，不仅能拓宽油井水泥的应用范围，而且能进一步发挥微细水泥在油田开发中的优势。