Fracture Zone Analysis Based On Property Electrical Borehole Image Log And Geomechanic Geothermal Field Solok, West Sumatra

Abstract

Prospective area of Solok geothermal lies in step over transtensional between two segments, Suliti and Siulak, Sumatra faults. Geological structure in this prospect area shows structural pattern controlled by “oblique divergent strike-slip fault system” (releasing bend) as a proceed of embraced movement from Sumatra fault and establishes “dilation zone” between those two segments, forming negative flower structure in direction of NW-SE and N-S. The pattern of geological structure is predicted to control the availability of solok geothermal system which in this case related to presence of surface manifestation. The pattern of geological structure is predicted to control the availability of solok geothermal system which in this case related to presence of surface manifestation. Surface manifestation indicates good permeability zone that can be used as flow path of geothermal fluid from reservoir.