Extended geothermal potential of clastic aquifers by hydraulic stimulation
conference paper
We evaluated the implications of hydraulic stimulation in a Dutch context for low permeability clastic
aquifers at a depth of 2000 to 4000 m, whose transmissivity has been mapped in the framework of the
Dutch subsurface information system on geothermal energy in the Netherlands. For the simulation and
well layout we adopt long horizontal well trajectories up to 2 km length with vertical fracs along the well
bore. The implications on subsurface potential are significant as it unlocks considerable clastic aquifer
potential. Our calculations indicate that hydraulic stimulation is capable of producing higher flow rates and
power than without stimulation with moderate excess in LCOE and extending in depth and spatial extent
the potential. The LCOE for the reservoir stimulation scenario can stay well below 12-13 EUR/GJ,
depending on natural permeabilities which need to be in excess of 0.5 Darcymeter.
aquifers at a depth of 2000 to 4000 m, whose transmissivity has been mapped in the framework of the
Dutch subsurface information system on geothermal energy in the Netherlands. For the simulation and
well layout we adopt long horizontal well trajectories up to 2 km length with vertical fracs along the well
bore. The implications on subsurface potential are significant as it unlocks considerable clastic aquifer
potential. Our calculations indicate that hydraulic stimulation is capable of producing higher flow rates and
power than without stimulation with moderate excess in LCOE and extending in depth and spatial extent
the potential. The LCOE for the reservoir stimulation scenario can stay well below 12-13 EUR/GJ,
depending on natural permeabilities which need to be in excess of 0.5 Darcymeter.
TNO Identifier
505061
Article nr.
Tu G106 03
Source title
76th Eage Conference and Exhibition 2014, Amsterdam RAI, The Netherlands, 16-19 June 2014
Pages
1-5
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