GEOLOGI DAN PEMODELAN RESERVOIR FORMASI DURI PADA LAPANGAN KRG, CEKUNGAN SUMATERA TENGAH

• Main Author: Anandya Mahendra, Indah
• Format: Final Project
• Language: Indonesia
• Subjects: Geologi, hidrologi & meteorologi
• Online Access: https://digilib.itb.ac.id/gdl/view/34263
• Institution: Institut Teknologi Bandung

Administratively, KRG Field is located in Riau Province which is encompassing an area of 14.3 km2. Geologically KRG Field is an northwest-southeast oriented anticline that is located in Balam Block, Central Sumatera Basin. The study is focusing in Duri Formation with two reservoirs interval which are Reservoir 1 and Reservoir 2 and sandstone as its lithology. The main purposes of this study are to determine the reservoir model and to estimate the original oil in place (OOIP) of those two reservoirs. Several methods have been performed in order to achieve those main purposes which are, first is well data analysis which are well to well correlation using sequence stratigraphy concept, electrofacies analysis from log data and cuttings and petrophysic analysis. Second is seismik data analysis which are determination of depth structure map and reservoir geometry. Third is reservoir modeling which are determination of three dimensional structure model, petrophysic property modeling, fluid contact and estimation original oil in place (OOIP). The result by implementing those methods are, main structural geology in KRG Field are northwest-southeast trending anticline and north-south trending reverse fault. Facies of Reservoir 1 is barrier whereas facies of Reservoir 2 is fluvial channel, with the same sedimentation direction which are northeast-southwest. The estimation of original oil in place (OOIP) in the two reservoirs interval in study area is 15 MSTB