Research methods of the potential of long-term operated reservoirs based on the hydrodynamic model

Studying the potential of long-term operated fields and evaluating their efficiency requires the application of modern approaches. In this regard, by using three-dimensional geological and hydrodynamic models of the Pirallahi Island field, various complex impact mechanisms were modeled, as well as the solution of the mentioned issues based on the established model was considered on the basis of simulation to maintain the development rate of the field and increase the oil production rate. When there is no accurate information about the initial condition of the field, as well as when the data is partially insufficient and inaccurate in some intervals of the long-term production performance, methods of restoring information in different ways for building a hydrodynamic model were investigated, and ways to minimize the negative impact of this type of uncertainty on the model were also studied. For this purpose, a new method called intermediate initialization was developed and applied to the construction of the reservoir model. On the basis of the established model, a more efficient method of field exploitation, water injection into formations, optimal placement of new production and injection wells was selected, modeling was carried out for various options and scenarios, a plan of necessary measures was drawn up to maximize the life of the field, development parameters were predicted and the results were compared. Keywords: field; formation; well; development; model; information recovery; intermediate initialization method; prediction.