1. College of Earth Sceiences��Jilin University��Changchun 130061��China; 2. Exploration and Development ��esearch Institute��PetroChina Jilin Oilfield Company��Songyuan 138001��Jilin��China

By pure volume model and logging data regression methods��the framework parameters of different rock types have been calculated in different methods��respectively�� A method was given by using conventional log- ging data to determine the porosity and permeability of volcanic rock reservoirs of Huoshiling Formation in Lishu Fault Depression�� This paper presents the relationship among the physical property and lithology��lithofacies��pore- fracture and buried depth��suggesting that the favorable reservoirs are in the crater complex facies composed of vol- canic lavas and breccias�� The dominated reservoir spaces are dissolved pore- fractures and the buried depth has lim- ited influence on volcanic rocks�� The ��eservoir Quality Index (��QI) have been applied to evaluate the comprehen- sive physical property of reservoir qualitatively�� In order to gain a deep insight into the volcanic reservoirs��we use this method on 20 wells of Wangfu gas field�� The results of this evaluation are consistent with the potential of gas test��