Simona Regenspurg

International Centre for Geothermal Research (ICGR)

OVERVIEW OF GFZ-ICGR ACTIVITIES

ON GEOTHERMAL FLUIDS

Workshop “Geochemistry of Geothermal Fluids”, Miskolc

Holististic Approach

International Centre for Geothermal Energy Geothermie Zentrum

Rock physics

Geothermal

fluids

Earth temperature

field

Geothermal Energy at GFZ

GFZ –ICGR as partner or coordinator in current EU projects

Geothermal fluids

Simona Regenspurg, Harald Milsch

Research Topics

Fluid Chemistry

Fluid Physics

Fluid Monitoring

Maren Brehme

Dejene Driba

Jörg Zotzmann

Ulrike Hoffert

Daniel Müller

Tanja Ballerstedt

Geochemistry at the ICGR

Goals

1. Chemical reactions during fluid processing Scaling and corrosion

2. Environmental issues (toxic, radioactive compounds)

3. Scaling prevention strategies: inhibitors, enhanced & controlled precipitation

4. Prediction: geochemical modeling

5. Exploration: Information on fluid origin and temperature

Methods and instruments

• Labs with high pressure, high temperature devices e.g. FTIR with pT-cell,

autoclaves with measurement probes (conductivity, pH, Eh, ultra sonic)

• Fluid monitoring (FluMo 1 and 2)

FluMo I (field)Autoclave (lab) FluMo II (lab)

ICGR Activities

Cooperations/Networks Projects/Partners in preparation

UNU

EERA -JPGEHAI

Research platforms

Deep

geothermal:

Groß

Schönebeck

ATES

Research well

Campus TU

Berlin

Groß Schönebeck geothermal site

Cl4719

Ca1347

Na1671

K74

other114

Sr29

Mg 22

Br 18

Mn4.9

Fe2.0

Li 29

Pb0.8

SO4

1.45

SiO2 1.2 NH4 4.1 Zn 1.1 Ba 0.25

Fluid composition: 265 g/L TDS

mM