APPLICATION OF ELECTRICAL IMAGE DERIVED POROSITY AND PERMEABILITY IN HETEROGENOUS CARBONATES FOR CHARACTERIZATION,QUANTIFICATION,IDENTIFICATION OF RESERVOIR FLOW UNITS.–CASE STUDY SENORO FIELD, INDONESIA

摘要

Senoro gas field is located within the Senoro-Toili Block in the eastern arm of Central Sulawesi,Indonesia and is operated by JOB Pertamina-Medco E&P Tomori Sulawesi. Three principal play types are present in the Senoro- Toili Block area,consisting of Miocene Carbonate Reef Buildup,Wrench Fault Anticline and ImbricateThrust Sheet Anticline structures. Potential reservoir of Senoro field is provided by Miocene carbonates of Minahaki Formation including the Mantawa Member reefal carbonates facies,which contain excellent porosity and permeability. Image Perm technique presents the results of integrating the sedimentological descriptions of conventional cores and petrophysical analysis with the interpretation of borehole images and conventional logs.Electrical borehole images combined with a full suite of the open hole logs,offer powerful means of characterizing facies and pore space.Characterization of porosity and flow units in a carbonate reservoir is achieved using the method of linking rock fabric descriptions and petrophysical properties as proposed in Jennings–Lucia model(2003).