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Table 4 Sample cores and their associated sample ID [consisting of well number (NM#), depth and sample #], formation name, microstructure type, dry bulk density, and connected porosity

From: Matrix permeability of reservoir rocks, Ngatamariki geothermal field, Taupo Volcanic Zone, New Zealand

Sample ID (well #, depth, sample) Formation name Microstructure type Dry bulk density (kg/m3) Connected porosity (%)
NM2 1354.2 A Tahorakuri Mixed pores and microfractures 2070 20.3
NM2 1354.2 B Tahorakuri Mixed pores and microfractures 2100 18.6
NM2 1354.4 A Tahorakuri Mixed pores and microfractures 2160 19.3
NM2 1788 A Tahorakuri Mixed pores and microfractures 2470 10.0
NM2 2254.7 A Tahorakuri Microfracture dominated 2570 4.9
NM3 1743 A Tahorakuri Microfracture dominated 2540 6.0
NM3 1743 C Tahorakuri Microfracture dominated 2510 6.3
NM4 1477.2 A Tahorakuri Microfracture dominated 2670 2.9
NM8a 2525.5 B Tahorakuri Microfracture dominated 2600 2.5
NM8a 2525.5 C Tahorakuri Microfracture dominated 2580 3.3
NM8a 3280 C NIC Tonalite Microfracture dominated 2510 3.1
NM8a 3284.7 C NIC Tonalite Microfracture dominated 2490 4.0
NM11 2083 A Tahorakuri Pore dominated 2290 14.3
NM11 2083 B Tahorakuri Pore dominated 2270 15.3
NM11 2083 C Tahorakuri Pore dominated 2290 14.7
NM11 2083.34 A Tahorakuri Pore dominated 2300 14.0
NM11 2083.34 B Tahorakuri Pore dominated 2280 14.9
NM11 2087.4 A Tahorakuri Pore dominated 2350 12.9
NM11 2087.4 B Tahorakuri Pore dominated 2310 14.4
NM11 2087.4 C Tahorakuri Pore dominated 2320 14.2
NM11 2087.4 D Tahorakuri Pore dominated 2340 13.4
  1. NIC, Ngatamariki Intrusive Complex