COUPLING THE HOLA WELLBORE SIMULATOR WITH TOUGH2

This paper describes a coupled model between the reservoir simulator TOUGH2 and wellbore simulator HOLA. The goal is to provide increased capability in TOUGH2 to better model flow in geothermal systems containing inclined wells with multiple feedzones. The model accounts for varying flowing bottomhole pressure and flow entering the wellbore from multiple feedzones at different depths, with the fluid in different thermodynamic states. This approach facilitates a more accurate simulation of behavior of the geothermal reservoir being exploited. The standard TOUGH2 input data is extended to support the new capability. Some sample problems are solved using coupled simulator and compared with the results obtained from the current deliverability model in TOUGH2. MOTIVATION