Abstract: Combined the theory reasoning with practical data, seleeted four production units of perfect well patterns- Ⅳ1-4, Ⅵ , Ⅶ1-3 14 and Ⅶ 4-18 in Shuanghe Oil Field arc regarded as objects of study. By means of sorting out the data and matching with the producing histories, we founded out the relation of total pressure drop with liquid production, an.i drew the model ralction curves, and founded out the rational injection-production ratio. Foundation of proration production and injection allocatio was given