Publications

Internal deformation of the Fold-Thrust-Belt (FTB) system is very complex due to stacking geometries such as over thrusting and thickening. Relationships between shortening and fault geometries as well as their sequences are the main important issues in understanding FTB deformation. However, in many cases is difficult to analyze using subsurface data due to the poor seismic image quality as a results of complex deformation style particularly tight folds and steep faults. Therefore, in evaluation FTB need to focus in conducting retro deformable sequences or palinspastic reconstructions trough balancing cross-sections. This exercise is very important in order to explore FTB hydrocarbon potential particularly related to trap integrity, hydrocarbon maturation and migration issue as well as reservoir porosity. The main purpose of this paper is presented results of study in applying integrated subsurface methods in evaluating FTB hydrocarbon prospect in the Eastern Indonesia region including Seram, Central Range Papua, Tanimbar and Timor Trough. In addition, this paper presented essential roles of Analogue Sandbox Modeling (ASM) in supporting the understanding of FTB deformation. The results of the study show very important initial parameter setting in controlling FTB deformation styles. Stratigraphy thickness governed by facies and length of the deformation front as well as initial slope is among the important parameters demonstrating the different between Banda and Central Range Papua FTB deformation. Thermal maturity due to burials and porosity development are highly influenced by these initial parameters. Basement configuration is one of the parameters seems to have major impact in fault styles such as thin-skinned versus thick- skinned FTB. Understanding the initial parameters conditions are very important issue in order to have the best modeling results.