Training material Geothermal resource management

Training material Geothermal resource management

Part I – Overview of geological, hydrogeological and geothermal conditions of the DARLINGe countries

Bosnia and Herzegovina

Part II – Introduction to deep geothermal energy: play types, potential estimation methods, geothermal modeling, classification of resources/reserves

Basic concepts of deep geothermal energy

Geothermal Play Types

Geothermal potential and estimation methods

Geothermal processes – a numerical approach for reservoir evaluation

Classification of geothermal resources / reserves

Methods to outline and characterize potential geothermal reservoirs at regional scales (Experiences from TRANSENERGY project)

Part III – Utilization and management of hydrothermal resources

Geothermal contexts of River Basin Management Plans and other (transboundary) groundwater management initiatives

The benchmark system of the TRANSENERGY project - ways forward in DARLINGe

Some practical aspects and good practices of thermal water direct uses

Part IV – Geo-techno-economic and environmental aspects of geothermal direct use projects

Geological risk mitigation

Experience from geothermal and hydrocarbon concessional works in Hungary

THE UNFC-2009 classification scheme as a possible tool for complex project characterisation and ranking

Economic considerations of geothermal projects

Environmental aspects and social acceptance

Part V – Data integration and visualization

Overview of existing web-based geothermal information systems

Benchmark system

What is benchmarking?

Existing indicators

How can we use it?

Who can use it?

What can be a result?

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Hungary

Geological setting, geothermal conditions

Basin formation: Early-Middle Miocene crustal extension

Streched (thinned lithosphere)

High heat flux (90-100 mW/m²) – continental average (60 mW/m²).

Geothermal gradient 45 °C/km (World average: 20-25 °C/km)

2 major geothermal reservoirs
- Karstified fractured-eathered zones (Palaeozoic-Mesozoic basement carbonates):
- Multilayered porous sediments (Upper Miocene-Pliocene “Pannonian” basin fill sequence) :
intergranular / porous reservoirs: best: delta (shelf) front sands

Current utilization

Red line: provisional contour of the DARLINGe area

Red line: provisional contour of the DARLINGe area

Agriculture: major sector for direct heat utilization (greenhouses, plastic tents)
Industrial purposes: few wells, typical outflow temperature is 40-50 °C
Balneological: ~255 wells, 40-50 °C outflow temperature
District heating: 21 towns in 2016 (thermal water heating cascade system)

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