A new integrated approach to resolve the saturation profile using high-resolution facies in heterogenous reservoirs

The saturation calculation in complex reservoirs remains a major challenge to the oil and gas industry. In simple formations, tendency towards models such as Archie or Simandoux for clean shaly respectively is always preferable. These were found be working effectively homogeneous formations within which porosity permeability are linked light of facies scheme. Where rocks show some degrees heterogeneity, well-logs usually affected by different factors. This adversely results compromised averaged log profiles that may affect calculations. Four wells drilled across sand high heterogeneity have been studied Perth Basin, Western Australia. aim resolve hydrocarbon explain productivity results, despite water saturation, obtained through conducted formation well test interested reservoir zones. A new integration technique between suite conventional advanced logging tools together with capillary pressure measurements has carried out generate high-resolution profile, lithofacies dependent. Three independent methods used calculate reduce uncertainty final estimated profiles. resistivity-based NMR-based irreducible application height modeling. Furthermore, workflow, an effective calibration magnetic resonance T2 cutoff applied supported excellent production behavior from reservoir. methodology will help one most challenging parameters, particularly where resistivity logs complicated environments. effectiveness workflow shines possibility predict resolution lack logs. further can complete analysis on real time basis, certainly provide extended uncored wells. Application this shown very encouraging various trajectories, either vertical, deviated horizontal long boreholes.