According to the geological features of studied area

geologic model

inverse model and dynamic model have been established. Numerical simulation of paleotectonic stress field and fracture prediction of the E

3

2

reservoir in Yuehui 1 well block of Gasikule oilfield in Qaidaim basin have then been made by using finite element method. The paleotectonic stress field

fracture direction and density in the main oil-bearing layers are mapped out. The results got from numerical simulation are consistent with the measured data. Fracture directions are somewhat different in various tectonic position and burial depth. Shear fractures are mainly in NEE and NWW directions. Tension fissures are mainly in near E-W and near S-N directions. Axes and higher parts of structures generally have higher fracture density than the limbs have

and the density would increase with increasing of burial depth.