Abstract:

The result of vertical interference test shows that vados flow exists in Donghe sandstonereservoir. In incompletely opened oil wells with vertical vados flow, the flowing shape of fluidappears to be spherical vados flow, and it is the sum of planar and vertical vados flow. In formation test interpretation, plane radial flow method would result in serious deviation of permeability interpretation. But horizontal well and deflecting well could effeciently improve theproductivity of this kind of reservoir. The amount of improved productivity would increasewith the increasing of K_v/K_h; deflecting well could improve the productivity at any permeability ratia, and the result would be more favourable when inclination is greater than 40?. Incomparason, the horizontal well is much better than the deflecting well.