GEOTHERMAL ENERGY RESEARCH

AT TNO

MAURICE HANEGRAAF

2 | Geothermal Energy at TNO

3 | Geothermal Energy at TNO

OVERVIEW TNO PROJECTS & ACTIVITIES ON

GEOTHERMAL ENERGY

Update Thermogis 2.0

5 ongoing EU projects: IMAGE, SURE, DESTRESS, GEOWELL, GEMEX)

HIPE (Radial jetting in 3 formations in the Netherlands)

Green deal UDG

4 Geothermica initiatives (HEATSTORE, CAGE, GECONNECT, PERFORM)

CO2 Air Capture in combination with geothermal energy

CO2 Dissolve

HE aanvraag innovative slimhole Derisking rotliegendes geothermal play Utrecht (LEAN)

HE aanvraag ATES

Portfolio approach Geothermal energy tohether with EBN

4 | Geothermal Energy at TNO

5 | Geothermal energy at TNO

o Nieuwe kaarten

o Nieuwe temperatuurmodellen

o Nieuwe data

o Nieuwe lagen:

• Ondiep HTO

• Diep > 4KM UDG

o Gereed Juni 2018

www.thermogis.nl

UPDATE THERMOGIS

EU HORIZON 2020:

IMAGE: http://www.image-fp7.eu

SURE: http://www.sure-h2020.eu/

DESTRESS: http://www.destress-h2020.eu

GEOWELL: http://www.geowell-h2020.eu/

GEMEX: www.gemex-h2020.eu

6 | Geothermal Energy at TNO

IMAGE: IMPROVING WHAT WE HAVE: REPROCESSING OF

SEISMIC DATA

RAU-D’s at TNO’s workshop

IMAGE: PASSIVE SEISMIC SURVEYS (ICELAND &

PEEL REGION)

Based on RAU-D units (fully digital remote acquisition unit)

Each unit is connected to a 3 component accelerometer

Each unit has its own internal data storage

Each unit has a GPS receiver for positioning and

time synchronization

Each unit has a Wi-Fi transmitter/receiver for communication

Central Acquisition unit (with wireless connection tot units)

External File server (multiple TB’s large)

3/4G communication with office

8

DESTRESS: SOFT STIMULATION

Impacts of variety of stimulation techniques on well performance on different

reservoirs:

Hydraulic stimulation

Radial Jetting

Thermal stimulation

Chemical stimulation

Looking for test location in the Netherlands!

SURE: RADIAL JET DRILLING

High Temperature Underground Thermal Energy Storage (HEATSTORE)

Country Concept of pilot demonstration Storage capacity

& volume

TRL*

advance

Netherlands Geothermal heat doublets combined with Aquifer Thermal Energy Storage (max 90°C) integrated into a heat network used by the horticultural industry

5-10 MW

20 GWh

7 to 8

France Solar thermal combined with a Borehole Thermal Energy Storage (55˚C) with lateral heat recovery boreholes

kW range

100 MWh

5 to 8

Switzerland Geneva

The development of a deep Aquifer Thermal Energy Storage system (>50˚C) in Cretaceous porous limestone connected to a waste-to-energy plant

~4 MW

to 5 - 6

Switzerland Bern

Surplus heat storage underground (200 - 500m, max 120 ˚C) in existing district heating system fed with combined-cycle, waste-to-energy and wood fired plants.

~1.7 MW

to 5 - 6

Germany Mine Thermal Energy Storage pilot plant for the energetic reuse of summer surplus heat from Concentrated Solar Thermal (max. 80°C; ∆t: 50-60 K) for heating buildings in winter.

45 kW 165 MWh

to 8

Belgium Demand side management (DSM) of a geothermal heating network, including assessment of adding thermal storage

9,5 MW**

3 GWh/y***

DSM:7 to 9

Air inAir out

Air circulation

geothermal geothermal

Night: loading of sorbent bed with CO2 from air Day: enriching circulation of air with CO2 from sorbent bed

CONCEPT OF AIR CAPTURE

LEAN:LOW COST EXPLORATION AND

DERISKING OF GEOTHERMAL PLAYSTHE ROTLIEGENDES DEMONSTRATOR

HEAT NETWORK &DEMAND UTRECHT

WHY LEAN?

Dutch geothermal energy ambition: 200 PJ/year

White Spots might have potential

2D seismiek (nlog.nl) 3D seismiek (nlog.nl) Boorgaten (nlog.nl)

Up to now no geothermal development at White Spots (too risky)

LEAN objective to demonstrate innovative approach for economic development of geothermal energy at

White Spots

LEAN PARTICIPANTS