Abstract: In recent years, with the continuous discovery of volcanic reservoirs, the reserves are more and more becoming new points of incremental reserves. However, as a kind of special reservoir, the volcanic reservoir is still difficult in study and in prediction. Taking the Carboniferous volcanic rocks in Wucaiwan area of Junggar basin as an example, the identification model for volcanic facies is developed, the seismic study method for it is presented and the favorable zones for volcanic reservoir prospecting are predicted, based on available volcanic lithology and lithologic assemblages as well as corresponding seismic responses, which provide a assistant and practicable method for prediction of volcanic facies in this and similar areas.

Key words: Junggar basin, volcanic rock, sequence, facies, seismic facies