Abstract: By using Eclipse software and numerical simulation method, The $N^{1}_{2}$ reservoir of Wuwu fault block in Wunan oilfield is simulated. Under isotropic condition of the matrix permeability, three well patterns such as five-spot areal well pattern, inverted nine-spot rhombic and square well pattern are compared for getting the effects of the fracturing fracture’s penetration rates on production performances. At the result, five-spot areal well pattern is recommended for this block, and the ratio of well spacing to well row distance of 2 and well spacing of 350~400 m will be most suitable.

Key words: Qaidam basin, Wunan oilfield, Wuwu fault block, low-permeability reservoir, fracturing development, injection-production well pattern, numerical simulation