Fractal technique is a new method of studying reservoir pore texture.The process includes: 1.making of SEM imagines;2.digitizing SEM imagines;3.counting geometrical features as a function of feature size;4.fitting the distribution probability of the feature and caculating fractal porosity.The principle and detailed technical process of the analysis are discussed in this paper

and the relative computer program is also developed. The result of practical use has been proved to be satisfactory.