镜质组
The content of vitrinite and ash are different in different types of coals. 镜质组有利于割理的形成，其含量越高，储集物性越好。
This paper describes the calculation of the erosion thicknesses of Dongying Formation in single wells based on the vitrinite reflectance and sonic time difference data. 综合利用镜质体反射率和声波时差测井资料对东濮凹陷单井的东营组地层剥蚀厚度进行了计算。
