THE COMPARISON ANALYSIS OF FRACTURE BASEMENT RESERVOIR SIMULATION BETWEEN TWO STATIC MODELS OF DYG FIELD, SOUTH SUMATRA BASIN

• Main Author: RAHIM PERMANA (NIM : 22214024), BUDI
• Format: Theses
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/21468
• Institution: Institut Teknologi Bandung

DYG gas field is the first productive fracture basement system in Indonesia. The 3D static model software technology is evolving from pillar gridding that has limited number of faults and configurations to volume based model (VBM) that can accommodate more faults and configurations. Two static models have been created using those different technologies which are Petrel 2009 and Petrel 2014. <br /> <br /> <br /> In this research the two static models are Model A and Model B. Model A was created using pillar gridding in Petrel 2009 to accommodate 26 faults. Model B was created using VBM in Petrel 2014 to accommodate 168 faults. Those models have porosity that was distributed using soft trend. The soft trend for porosity is related to the faults. Porosity-permeability distributions from these two models are identical. Original gas in place of these models were compared to material balance analysis of 1.5 TCF. <br /> <br /> <br /> Reservoir simulation was conducted for these static models and compared to the production data from 1998 to 2016. Simulation results show that Model B perform better than Model A due to better matching in term of gas rate. However, Model B could not produce the water such as in Model A although Model A can not match the historical water production. The recommendation is to use Model B for gas prediction with a modification of reservoir connectivity to the akuifer therefore can match with historical water production.