FLUID INCLUSION MICROTHERMOMETRY AND GAS CHEMISTRY IN GEOTHERMAL SYSTEM, JAPAN AND ITS APPLICATION FOR THE STUDY OF FLUID EVOLUTION - Energy Research Developments: Tidal Energy, Energy Efficiency and Solar Energy - page 165

Table 3. Bulk gas compositions of fluid inclusions from geothermal fields

Depth
(m)

Gas composition (mol %)

Field Well Mineral Reference

H 2 O CO 2 N ￿ CH ￿ Ar

Mori NT-306 360 Qz 99.1 0.95 0.085 0.00080 tr Muramatsu et al.(2000)

NB-1 395 Qz 98.7 1.06 0.075 0.0059 tr

NC-1 1135 Ah 98.7 1.13 0.10 0.0052 0.00006

ND-1 1200 Ah 98.9 0.87 0.088 0.0055 tr

ND-1 2260 Qz 92.4 2.0 5.1 0.058 0.0007

ND-1 2265 Qz 92.6 2.0 5.0 0.060 0.0004

ND-1 2265 Qz 91.5 2.4 5.8 0.063 0.0007

ND-6 600 Qz 99.2 0.81 0.034 0.0075 0.001

ND-6 600 Ah 98.7 1.23 0.11 0.0025 0.0006

ND-6 790 Ah 97.9 1.85 0.17 0.019 0.0004

ND-6 1680 Qz 98.4 1.56 0.055 0.0054 0.0001

ND-6 2000 Qz 98.1 1.21 0.24 0.032 tr

ND-6 2000 Ah 98.0 1.92 0.095 0.012 0.0002

ND-7 1585 Qz 99.3 0.56 0.045 0.010 tr

NF-3 1000 Ah 98.7 1.35 0.046 0.0019 tr

NF-6 2155 Ah 99.0 0.97 0.029 0.0014 0.00002

NF-9 1970 Qz 99.0 0.73 0.13 0.0078 tr

N2-KX-3 1288 Ah 99.1 0.88 0.073 0.00043 0.001

Matsukawa M11 850 Ah 99.4 0.60 0.031 0.0024 0.00006 Muramatsu et al.(2006)

M11 916 Ah 99.5 0.40 0.034 0.0049 0.0017

M12 1097 Ah 96.5 2.6 0.48 0.018 0.0006

Kakkonda Surface 0 Qz 100.0 0.011 0.0055 0.00026 0.00001 Sawaki et al.(1999

Surface 0 Qz 99.9 0.057 0.030 0.0013 0.00006

Surface 0 Qz 99.9 0.071 0.021 0.0019 0.00002

Surface 0 Qz 99.9 0.061 0.030 0.0021 0.00003

Well-13 500 Qz 99.8 0.11 0.046 0.0020 tr

Well-86 140 Qz 100.0 0.031 0.0083 0.0011 0.00009

Well-86 170 Qz 100.0 ￿0.01 tr tr tr