Abstract：During Fracturing in volcanic reservoir, Difference between volcanic reservoir and homogeneous reservoir is great, because of natural fissures. In the paper, some new concepts are introduced on the basis of homogeneous reservoir, such as tip factor, leak factor, and modulus factor. A physics model and mathematics model are present to describe multi-fractures, leakage, tip effect. Using fitting technique for treating pressure can show these factors, the mechanism of fracture extending and the parameters of fractures. The result shows that the three factors can explain the changes of treating pressure and reflect the law of fracture extending. Therefore, three factors are important for the improvement of massive fracturing treatment and development of Volcanic Reservoir .
2003, Vol. 22 
