Dynamic Simulation of the Filtration Process Based on the Streamline Technology, Monitoring and Prediction of EOR and Stimulation Methods


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Jamalbayov M. A., Hasanov I. R., Valiyev N. A., Doğan M. O., Jamalbayli T. M.

ThEOR2022 - Thermal Methods for Enhanced Oil Recovery: Laboratory Testing, Simulation and Oilfields Applications , Baku, Azerbaijan, 3 - 05 November 2022, pp.42

  • Publication Type: Conference Paper / Summary Text
  • City: Baku
  • Country: Azerbaijan
  • Page Numbers: pp.42
  • Middle East Technical University Affiliated: Yes

Abstract

The purpose of the work is to model the filtration processes in gas condensate and oil (including volatile oil) reservoirs operated by production and injection wells of an arbitrary number on any coordinates, on the basis of which the creation of a computer simulator for visualization and predicting the process and evaluating the effectiveness of EOR and stimulation methods. The solution was obtained on the basis of streamline technology, taking into account reservoir rock deformations, PVT properties of reservoir fluids, multi-phase flow, mass transfer between phases, etc. For this purpose, have been used the previous results of the authors in the field of the two-dimension filtration modeling of complex hydrocarbon systems, such as gas condensate mixture and volatile oils in deformable reservoirs; material balance equations are applied for the cases under consideration, on the basis of which equations are obtained for determining reservoir pressure and saturation of pores with liquid phase at any point of the reservoir. It is also used the algorithm of the authors to calculate influx at a given bottom hole pressure or drawdown. The solution to the problem was obtained thanks to the idea of the time discretization. A computer simulator was created on the basis of the obtained mathematical model. It was tested on examples of gas condensate and volatile oil reservoirs. The results confirmed the adequacy of the obtained mathematical model, on the basis of which the simulator was developed. Figure 1 shows the filtration process (pressure distribution) between the wells (the upper well is an injection well). Studies have demonstrated the effectiveness of the obtained streamline-based solution. It has a number of advantages over Finite-Difference Simulation: It requires fewer data and fewer computational resources, hence it is easy and fast to implement; it is faster and works in real-time. The proposed streamline-based solution can be used to predict the effectiveness of reservoir stimulation methods including thermal stimulation. The results once again showed the wide possibilities of streamline technology.