Abstract: F Oilfield is an old oilfield that has been produced for many years and now has entered into a stage of comprehensive adjustment. Many problems have occurred during production, and the fundamental problem lies in the inaccuracy of structural model On the basis of oilfield production data, together with the dynamic data from the core and the seismic data, the structures in this old oilfield have been studied further, and good production history matching has been obtained. It has been confirmed by the drilling results that the study method on structures is effective, and good results have been received with this method. In addition, many production problems have been solved with this method, and the direction and space for the oilfield comprehensive adjustment have been made clear. The ideas and technology used in this field are also useful for comprehensive production adjustment in similar oilfields.