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Modelling fluid flow through fractured rock: Examples using TVZ geothermal reservoirs
(New Zealand Geothermal Workshop, 2015-11-18)
Geothermal resources are often hosted within volcanic, plutonic, and basement-type lithologies. As such their matrix permeability can be very low and the transport and circulation of geothermal fluids will be dominated by ...
Fractures interpreted from acoustic formation imaging technology: Correlation to permeability
(Stanford University, 2011-01-31)
Permeable feed zones in geothermal wells are commonly identified using well profiles of temperature, pressure and fluid velocity measured at different injection rates during well completion testing and heat-up. While this ...
Statistical corrections of fracture sampling bias in boreholes from acoustic televiewer logs
(New Zealand Geothermal Workshop, 2012)
Targeting structurally controlled permeability remains a challenge in high temperature geothermal fields, because of the difficulties in characterising faults and fractures and their behaviour within the reservoir. The ...
Rock properties of Greywacke Basement hosting geothermal reservoirs, New Zealand: preliminary results
(Stanford University, 2014-02-24)
Geothermal resources in New Zealand are known to be hosted in greywacke basement rocks. Fluid flow in these reservoirs and the wells that access them is controlled by fracture networks. As such it is of vital importance ...
Tectonic structure and permeability in the Taupô Rift: new insights from analysis of LiDAR derived dems
(New Zealand Geothermal Workshop, 2017-11-22)
The location of permeable zones, and preliminary
quantification of a geothermal well’s production or injection
capacity are routinely interpreted from well pressure,
temperature, and flow measurements made at ...
Volcanic texture identification and influence on permeability using a borehole resistivity image log in the Whakamaru Group Ignimbrite, Wairakei Geothermal Field, New Zealand
(Workshop on Geothermal Reservoir Engineering, 2018-02-12)
Discerning the contributions to fluid flow in a geothermal reservoir from intrinsic and structural permeability components is an
important, yet difficult task. High-quality, resistivity borehole image log data (Formation ...
Discussion between a reservoir engineer and a geologist: permeability identification from completion test data and borehole image logs integration
(39th New Zealand Geothermal Workshop, 2017-11-22)
The location of permeable zones, and preliminary quantification of a geothermal well’s production or injection capacity are routinely interpreted from well pressure, temperature, and flow measurements made at different ...