Computer Simulation of Geothermal Reservoirs in the Pannonian Basin, Eastern Europe

Abstract

Geothermal reservoir modelling is a technology that has become standard over the past decade in Eastern Europe. If sufficient information is available on a geothermal field, it is often possible to construct numerical models of the reservoir and use these models to simulate field performance under a variety of conditions. Perhaps the most important, and most challenging, part of this process is the integration of information gathered by all the geoscientific disciplines leading to development of the conceptual model. The success of any reservoir modelling exercise is dependent upon the flow of high quality information from the basic data collection phase, through the conceptual modelling phase, to the simulation process. This flow of information must go both ways, as the modelling process is an iterative one, often requiring numerous reconstructions and reinterpretations. This paper reveals the particularities of numerical simulation of geothermal reservoirs nestled in the Pannonian Basin using modern reservoir engineering tools. Modelling results for several types of geothermal reservoirs are summarized, with special attention to general procedures for model development; calibration, and production simulation forecasts.