For the first part of this project, the general objective is to evaluate the general geology of the Pulau Bunting. There are several method has to be used to complete and achieve the objective. Fracture analysis method (streonet and rose diagram) has been used to interpret Pulau Bunting metasediment fracture pattern. On the other hand, there are also several elevation data has been taken to help generating the island topography map. Borehole correlation data has also been used to give a basic interpretation of the island lithology.
As for the specific objective of this project, the Porosity data analysis will be use based on the theory of consolidation. The specific objective behind this analysis is to determine the reservoir quality for shallow well environments in Pulau Bunting. This analysis has been derived directly from the ultimate soil settlement in which the soil has been classified based on its initial void ratio, final void ratio and thickness of soil layer. The outcome of the analysis is to produce porosity versus depth profile to observe the porosity distribution in Pulau Bunting. The porosity distribution will then compared with the Menggala Sandstone in Sihapas Formation which has the porosity of 25% at depth between 500m – 1000m at the Central Sumatera Basin. Through the analysis, the initial void porosity gives depth of 118 meter at 25% porosity while the CPI porosity gives depth of 1438 meter at 25% porosity. Therefore, it can be concluded that at depth of 118 – 1438 m the porosity of the area are estimated to be at 25%
