3D geological model of Nahr Umr/Ratawi oil field in Basra

[摘要] The study includes building a 3-D geological model, which involves get the Petrophysical properties as (porosity, permeability and water saturation). Effective Porosity, water saturation results from log interpretation process and permeability from special correlation using core data and log data. Clay volume can be calculated by six ways using IP software v3.5 the best way was by using gamma Ray. Also, Water Resistivity, flushed zone saturation and bulk volume analysis determined through geological study. Lithology determined in several ways using M-N matrix Identification, Density-Neutron and Sonic-Neutron cross plots. The cut off values are determined by Using EHC (Equivalent Hydraulic Unit) method. The full grid of the model was 454308 cells. Layering of units depend on the importance of these units and scale up had done using several methods depend on property (Arithmetic for porosity and water saturation and geometric for permeability). Petrophysical properties distributed using Gaussian statistical approach. Original oil in place calculated for Nahr Umr which equal to 460 m3.

[发布机构] Petroleum Technology Department, University of Technology, Baghdad, Iraq^1;Petroleum Engineering Department, University of Baghdad, Baghdad, Iraq^2

[关键词] 3-d geological models;Effective porosity;Log interpretation;Original oil in places;Petrophysical properties;Statistical approach;Water resistivity;Water saturations