Abstract: Arranging adjustment wells is important method of tapping potential of reservoirs in middle and late periods of fault block Oil field production. Through geological studing, combined with cases of the flooded substralums and dynamic analys meticulously in the Oil Production No3. Zhongyuan Oil Field in 1994. On the fundament of true residual oil distributions, We Have disposed adjustment wells, therefore injection production patterns are improved, geological reserves are utilized fully, and incresed recoverable reserves. The results are natable.