Integration and Application of Geological Modeling and Numerical Simulation Based on Combining Geological and Dynamic Modification for Fractured-vuggy Reservoirs:Taking the T436 Unit of the Tahe Oilfield as an Example
The distribution of reservoirs in fractured-vuggy reservoirs is discrete and irregular,resulting in strong heterogeneity and a complex oil-water distribution relationship.This leads to large uncertainty when modelling fractured-vuggy carbonate reservoirs,and there may be errors between the static characterization of the geological model and the actual situation.Therefore,a new approach was proposed to numerical modelling by combining static modelling with dynamic historical data,based on reserve and connectivity con-straints.The model was established based on the dynamic connectivity of the fracture-vug unit.It relies on historical production to carry out reserve modification,connectivity modification,and water breakthrough characteristics modification.The method was verified by the T436 unit of the Ordovician weathered crust stripping zone of the Tahe oilfield area 2.After the dynamic corrections,a more accu-rate reservoir simulation model was derived.The results show that the proposed suggestions and measures have significantly improved the development effect of Unit T436.This confirms the feasibility and practical application integrating of geological modelling and nu-merical simulation based on combining geological and dynamic modification.It is of great significance for the future development of fractured-vuggy reservoirs.
fractured-vuggy reservoirscombining geological and dynamic modificationintegration of geological modelling and nu-merical simulationdevelopment effect
万方数据
维普
