临南洼陷带沙三段下亚段碎屑岩储层非常发育,而低渗透、特低渗透储层所占比例较高,难动用储量大。在研究储层微观特征及低渗透成因的基础上,将研究区沙三段下亚段低渗透——特低渗透碎屑岩储层划分为4大类10小类,并分析了各类储层的微观主控因素和增产改造方法。A类储层仅需对钻井液污染带进行针对性的酸洗处理即可具备较好的自然产能,将其命名为自然产能控低渗透储层;B类储层可以利用酸液溶蚀碳酸盐胶结物、增大孔隙度和渗透率,从而获得较好产能,将其命名为酸化控低渗透——特低渗透储层;C类储层根据填隙物类型分为粗晶——连晶碳酸盐胶结类型、泥质胶结类型、塑性组分充填类型和次生石英胶结类型4小类,不同类型采取不同酸化和压裂措施能取得一定的效果,将其命名为酸压控低渗透——特低渗透储层;D类储层压裂和酸化效果均较差,将其命名为力求产特低渗透储层。 The clastic reservoirs in the lower sub-member of the third member of the sand belt in Linnan sub-sabotage are well developed, whereas the reservoirs with low-permeability and ultra-low permeability occupy a relatively high proportion and the reserves are difficult to use. On the basis of studying the microscopic characteristics of reservoirs and the causes of low permeability, the low-permeability and ultra-low permeability clastic rock reservoirs in the lower sub-section of the third member of the Third Member of the Third Member are divided into four major and ten sub-categories. Layer of the main micro-control factors and stimulation of production methods. Class A reservoirs only need to carry out targeted pickling treatment on the contaminated zone of drilling fluid to have better natural productivity, which is named as Natural Permeability Controlled Low Permeability Reservoir. Class B reservoirs can use acid solution to dissolve carbonate Salt cement, increase porosity and permeability, so as to obtain better productivity, named as acidification controlled low permeability - ultra-low permeability reservoir; Class C reservoir according to the type of interstitial material is divided into coarse-grained Crystal carbonate cementation type, cemented cement type, plastic component filling type and secondary quartz cementation type 4 sub-categories, different types of acidification and fracturing measures taken to achieve certain results, the name acid pressure control low Infiltration - ultra-low permeability reservoir; Class D reservoir fracturing and acidification are poor, it is named for the production of special low permeability reservoir.