Description:
The Geysers geothermal field is the largest developed geothermal
system in the world. The total installed capacity is presently
2,056 MW although actual production in early 1994 was
estimated to be only 1,200 MW(net). The inability to produce at
higher generation levels is due to the significant pressure decline
that has occurred within the reservoir, particularly since the mid-
1980's.
In 1992, a comprehensive field-wide numerical simulation model
of The Geysers field was completed, based on drilling, well-test
and production data provided by four of the five major field
operators. The numerical simulation model was originally
developed by UNO CAL, based primarily on data from the
UNOCAL-NEC-Thermal (U-N-T) lease areas, and was extended
in this study to incorporate data from the other operators.
