Fibre-optic monitoring of efficiency of aquifer thermal energy storage

1. Fibre-Optic Monitoring of Efficiency of
aquifer thermal energy storage (ATES)
Jelle Buma
5 november 2015

2. Aquifer Thermal Energy Storage

3. ATES on the rise
10 november 2015
Groundwater use in the Netherlands
(CBS, 2011)
Sector Volume (Mm3/yr)
Water companies 757
Industry 141
Agriculture 89
Food and beverage
industry 67
Chemical industry 12

4. ATES design
10 november 2015
Plan view

5. Schematic x-section subsurface
Spheres of thermal influence
clay
sand

6. Increased use of subsurface

7. 10 november 2015

8. Research aims
1. Validation of simulation models
2. Integrated monitoring (subsurface / building)
3. Optimized maintenance planning
4. Legal matters (exploitation, guaranteed supply)
Project FOME-BES: 01/07/2014 – 31/12/2016

9. G. Brown, Downhole Temperatures from
Optical Fiber, Oilfield Review, 2008: 20, no.4
Light pulses into fibre optic cable
Backscatter of light depends on temp.
Speed of light →location along cable
Principle

10. Upscaled system (central heat & cold rings)
10 november 2015
Utrecht Science Park (2015)

11. Inner and outer cales in ATES wells : screen clogging
detection
Utrecht Science Park

12. Delft (Deltares / Tetra) (2013)
Fibre optic cables
(k1-k6, w1-w6)
ATES
(cold)
ATES
(heat)

13. Delft (Deltares Tetra) 2D results

14. Delft (Deltares / Tetra) (2D+1) results

15. Utrecht (Rijnsweerd)
large-scale building renovation
existing system with recent extension

16. 10 november 2015
Utrecht (Rijnsweerd)
Installation monitoring network :
to drill, to dig & to splice

17. The enemy
10 november 2015

18. ASR aanleg
10 november 2015
Utrecht (Rijnsweerd) 1D results
klei
M50 300
ATES flow data are crucial for interpretation

19. 10 november 2015
Brownfield redevelopment
Recirculation system
Research aim: early detection of screen
clogging / maintenance planning
Eindhoven Strijp-S

20. Eindhoven Strijp-S installation

21. Utrecht CS area
Energy potential fully claimed
But not fully used
What are the real spheres of
thermal influence ?

22. 10 november 2015
Complex, dynamic
situation
>> cable installation still
to be done
www.cu2030.n
l
Utrecht CS area

23. The way forward: spatial planning of the
subsurface (formation of alliances)
10 november 2015