The adjustment of the flow field proves to be an effective way for enhancing the recovery of remaining oil during the high water cut development stage in a water-flooding oilfield. As the water flooding oilfield enters the high water cut development stage

a dominant flow field gradually forms between oil and water wells

resulting in the ineffective circulation of injected water. As a result

the effect of reservoir development is reduced. To address this issue

a flow field adjustment model is established based on standard determinant well pattern arrangement using Python programming language

guided by the working principle of flow field adjustment. In this model

the flow field streamlines transition angles are 27°

and 45° respectively. The finite difference method is employed to simulate the dominant flow field range before and after the adjustment. The results demonstrate that the nine-spot method and the five-spot method could enhance the oil displacement efficiency

while the flooding efficiency of the M-shaped well-mesh is relatively low. Moreover

the 45°-streamline transition proves to be particularly beneficial for oil exploitation during the high water cut development stage in a water-flooding oilfield. The study holds significant guiding significance for adjusting the well pattern and enhancing the recovery efficiency

thereby facilitating the extraction of remaining oil in the high water cut development stage.