Uncovering The Potential of Low Resistivity Reservoirs Through Integrated Analysis: A Case Study from The Talang Akar Formation in The South Sumatra Basin

The study area is an oil and gas field that has a low resistivity reservoir zone in the Talang AkarFormation, South Sumatera Basin. composed of siltstone sandstone was depositedin shallow to transitional marine environment. aim this identify determine potential oflow reservoirs formation. data used include well log, mud core data(porosity, permeability, petrography), formation water analysis, biostratigraphy. methodology includesqualitative analysis zones (quick look interpretation) reason for resistivityreservoirs, as quantitative calculate petrophysical parameters. results quicklook showed 77 zones, but identified 25 resistivityreservoir candidates drill steam test (DST). Factors causing inthe clay mineral content (kaolinite illite), conductive minerals (pyrite siderite), highsalinity (10,000 ppm), very fine medium sand grain size (0.063 - 0.5 mm) distribution ofclay (laminated dispersed clay), thin laminates. showthat shale volume less than 30%, porosity greater 14%, permeability 10 mD, watersaturation 70%.