GeoModel

Lumpfit: this program, by solving the inverse problem (matching the geothermal system model to the observation data), allows the model to be calibrated, and then to make forecasts for further operation (changes in pressure or water table as a function of flow rate and time). Lumpfit is a lumped parameter model code. The new version of the code will allow for individual representation of each well in the geothermal system, thanks to which it will be possible to calibrate the geothermal reservoir model even more precisely and create even more reliable forecasts for further exploitation.

Waiwera (website): this is an open-source code developed at the University of Auckland, New Zealand, to create 3D models for comprehensive geothermal system imaging and simulation of reservoir response during exploitation. As it is a program designed for creating complex 3D models, a spatial distribution of reservoir parameters and monitoring data of the analyzed system are required in order to calibrate it. As a part of the GeoModel project, we plan to extend the possibilities of Waiwera software by creating either integral or independent components:

• development of a new equation of state for highly mineralized waters to be used with Waiwera;
• development of a script to eliminate the thermal lift effect from wellhead data;
• development of a script for determining the physical parameters of the fluid during wellbore exploitation (wellbore simulator);
• development of an algorithm that will optimize location of new geothermal wells.

The project is implemented in partnership between the Mineral and Energy Economy Research Institute, Polish Academy of Sciences (MEERI PAS) and the Iceland GeoSurvey (ISOR).