Sabiriyah Upper Burgan Geological Model and Reservoir Characterization

Abstract

Abstract Sabiriyah field is located on North Kuwait area and was discovered on 1956 and producing from multi reservoirs. The upper Burgan is a multi billion bbl reservoir in NK, with very high degree of reservoir heterogeneity and extremely complex due to combination of discontinuous channel and shore face sandstone. The objective is to make a detailed stratighraphic correlation, build 3D static model to evaluate reservoir units, maps individual sand bodes within each unit, management and development the reservoir. Also would help on a major program of water injection plan. The SAUB reservoir 150 feet thick (early late Albian age) is classified into 6 depositional facies, 7 main reservoir unit and 20 flow unit based on integrated all data available via open hole logs, computed logs, seismic structure depth map of top reservoir, sedimentology studies, RFT and cores data. The correlation scheme has been created based on the identical of field wide correlatable surfaces which were picked from cored wells and interpreted easily on well logs and applied thru the entire field. Twenty one markers have been traced a cross the field, gross maps honoring the depositional trends have been prepared and used with top reservoir structure depth to generate the structure depth for each marker. Net sand maps were generated & carefully edited to reflect the conceptual model and used as an areal guide for deterministic distribution of property models as well as facies model. The high resolution model is achieved by generating 3 D faulted grid and integrating all the components such as all the structures, deterministic maps and petrophysical results in to one geocellular model. The SAUB model presents a very successful case for the integration of different disciplines and considered a milestone for the recent activities in such heterogeneity reservoir in Kuwait.