Study of sustainable production in two-phase liquid dominated with steam cap underlying brine reservoir by numerical simulation

6th ITB International Geothermal Workshop

Pratama, Heru Berian^1 ; Saptadji, Nenny Miryani^1

Study Program of Geothermal Engineering, Faculty of Mining and Petroleum Engineering, Bandung Institute of Technology, Indonesia Jl. Ganesha No.10, West Java, Bandung

40132, Indonesia^1

关键词: Production strategy;    Reinjection;    Reservoir characteristic;    Reservoir simulator;    Shallow injections;    Steam cycles;    Sustainable production;    Two-phase liquid;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/103/1/012005/pdf
DOI  :  10.1088/1755-1315/103/1/012005

来源: IOP

【 摘 要 】

The main issue in the management of the two-phase liquid-dominated geothermal field is rapid decline pressure in the reservoir so that the supply of steam to the power plant cannot be fulfilled. To understanding that, modelling and numerical simulation used reservoir simulators. The model is developed on liquid-dominated geothermal fields are assessed in various scenarios of production strategies (focusing only steam cap, brine reservoir and a combination) and injection strategies (deep and shallow injection, centered and dispersed injection), with the calculation using separated steam cycle method. The simulation results of the model for sustainable production are production 25% from steam cap + 75% from brine reservoir, dispersed and deep reinjection with make-up wells from steam cap results 9 make-up well number. The implementation of production-injection strategy needs to be planned right from the beginning of exploitation so that the strategy can adapt to changes in reservoir characteristics.