Publications

Main-Massive Formation in Offshore North West Java Block has proven as an excellent producer hydrocarbon. Reservoir in this formation consists of two main depositional environments; carbonate and sand ridge. Based on several conventional core and petrography analysis it shows heterogeneous reservoirs. Methodology for rock typing and permeability prediction, gather with geological aspect and Special Core Analysis (SCAL) data analysis on this reservoir still difficult to define. The importance of advance reservoir rock typing become very critical to answer in reservoir heterogeneities. Pore flow indicator (PFI) is a new quantitative approach for rock typing, the equation to classify group of rock typing based on Windland pore radius (R35) and Flow Zone Indicator (FZI) from Kozeny-Carman method that focused on hydraulic conductivity. Pore Flow Indicator calculation result that could be classified it means similar rock type. Each of one group has similarity in geological feature and SCAL data. Fitting line from plotting calculation between R35 and Flow Zone Indicator has very high correlation coefficient. Group of Rock type can be divided in to five group from very low (0.01 to 0.02) as Rock type 5 to very high pore flow (0.09 to 0.1) as Rock type 1. PFI Rock typing method could deliver equation of permeability prediction that corresponds to SCAL data. The Prediction of Permeability equations in each Rock Type come from deduction R35 and Kozeny; equations. In this Permeability equation, there is function of Irreducible Water Saturation (SWirr). Result of this paper work, based on quantitative method showing good correlation between permeability prediction with core data and able to define classification of rock types and corresponds with SCAL data both of carbonate and sandstone reservoirs in Main-Massive formation.