The energy of fluid in oil reservoir determines the direction of fluid flow. In order to study the energy distribution of fluid in fractured-vuggy reservoirs

a theoretical model of fluid potential is established

and the 3D fluid potential characterization method is determined. The mechanism models of four typical fractured-vuggy structures

single hole with bottom water

single hole with side water

double hole with bottom water and double hole with side water

are use to study the change rules of flow potential

and five main control factors affecting the flow potential adjustment effect are determined

finally

the research on potential tapping of residual oil was carried out in combination with flow potential analysis. The results show that the adjustment of flow potential for the model of single hole with bottom water make the production wells work best. The model’s water multiple is the decisive factor

and the flow potential regulation effect is better when the water multiple is less than 10 times. The greater the discharge

the better the effect of water control for production wells. The proposed fluid potential solving model of fractured and cavern reservoir can truly reflect the changing rules of fluid energy distribution in the actual formation.