In all flooding experiments, sandstone cores from Malaysia
with 3inch length and of diameter 1inch with average
porosity of 32% and of absolute permeability varied from
12.30 – 13.84 md. No oil was present in the cores. All the
cores were cleaned using methanol in Soxhlet extractor and
dried in a Memmert Universal Oven at 100 °C for overnight
before use.