Geothermal Reservoir Analysis of Mount Rajabasa Kalianda Potency Area using Resistivity Method and Geothermometer

Abstract

A research has been done to determine geothermal reservoir boundaries of Mount Rajabasa by using 1D sounding and mapping resistivity method. The mapping acquisition data was done by means of  Schlumberger configuration for AB/2 = 150 m, AB/2 = 300 m, AB/2 = 450 m and AB/2 = 600 m, next the data was correlated with ID sounding data at 3–2 line and 3–4  line. Geothermal reservoir was found with depth ≤ 450 m with resistivity value is 35 m. The reservoir has been estimated as sandstone tuff which lay in Lampung formation. From 1D sounding correlated at line 3-2 and 3-4 are indicated existing fluid flowed at 20 m under suface. Geothermal reservoir of Mount Rajabasa has temperature 212.08^oC and potency of energy is 12.5 MW/Km2. it classified as medium temperature.