Abstract: The fractural parameters of volcanic reservoir of Fu-2 Member of Paleogene in Min-4 fault block in Minqiao oilfield are predicted using tectonic stress field numerical simulation integrated with core fissure description. The study shows that lots of fractures occurred due to intense tectonic movement in Late Funing period, which were mainly distributing near the faults with trend of NEE. The present stress has modified effect on these fractures. The values of present fracture aperture, density, porosity and permeability are less than those of paleo-fractures, and the values of fracture parameters within the fault block are less than those of them near the faults.

Key words: Minqiao oilfield, volcanic reservoir, tectonic stress field, fracture prediction, finite element analysis