Environmental Engineering Reference
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Figure 2. (a) Relationship of static borehole temperatures after standing times between 120 hours and
30 days to two years (Muramatsu,1993) (b) Relationship between static borehole temperature after
standing times between 30 days to two years and estimated recovery temperature (Muramatsu,1993).
a
Minimum Th is largely higher than RT (figure 5a). Reservoir temperature has largely
decreased after precipitation of the measured mineral in the reservoir, and the fluid
activity had ceased at the past days.
b
Minimum Th is coincident with RT (figure 5b). Temperature of the reservoir fluid
has decreased to the present days.
c
Mean Th is nearly equal to RT (figure 5c). Temperature of the reservoir fluid has not
largely deceased after precipitation of the measured mineral to the present in the
reservoir.
d
Maximum Th is nearly equal to RT (figure 5d). Temperature of the reservoir fluid
has increased to the present.
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