通过对塔里木盆地塔河3、4号油田贝陶系古风化壳储层特征的详细分析，认为古风化壳储层垂向结构模式有3种，平面上划分为3个次一级地貌单元，进而对储层进行评价。在此基础上还探讨了油气层伤害的原因，结合录并、测井等资料，提出了酸化压裂改造选并选层的原则，经实践证明该原则对酸化压裂改造具有重要的指导作用。 Based on the detailed analysis of the Paleogene paleo-weathering crust reservoir characteristics in Tahe No.3 and No.4 oilfields of Tarim Basin, it is considered that there are three kinds of vertical structure patterns in the ancient weathering crust reservoir, which are divided into three sub-first geomorphic units on the plane, Then the reservoir is evaluated. On the basis of this, the causes of hydrocarbon damage are also discussed. According to the data of logging and logging, the principle of acid fracturing selection and selection is put forward. It has been proved that this principle has an important guiding role for acid fracturing .