Abstract: Based on result of the fine reservoir description and reserve calculation in H reservoir, with the application of fussy clustering analysis method, the quality of H reservoir is systematically evaluated according to single well, layers and sedimentary facies through the parameters such as reserve in per unit, porosity,permeability, average porous radius, variation coefficient and
mutation coefficient. The results show that H reservoir can be classified into four types and most layers belong to typeⅡandⅢ which the quality of reservoir is good.

Key words: fuzzy clustering analysis, similarity coeffi-cient, classifying index, evaluation of reservoir quality