| Abstract |
The Darajat Geothermal Field is located in the mountains of West Java 100 miles southeast of Jakarta, Indonesia. Extensive exploration was started under a New Zealand aid agreement, continued by PERTAMINA, the Indonesian Government Oil Company, and completed by Amoseas Indonesia, INc. Exploratory and evaluation work done consists of geologic mapping, geochemical surveys, geophysical surveys, environmental surveys, drilling, well testing and reservoir modeling. Amoseas work has confirmed that the Darajat reservoir is dome shaped trending northwest southeast and contains vapor dominated, two phase fluid. Pressures of 37 bars abs and temperature of 245°C are recorded. Of the seven wells drilled, five have reached the reservoir and three produce commercial quantities of steam. A computer simulation of the five square kilometer reservoir has shown it to contain sufficient reserves to supply a 55 MW plant. |