3D Geological Model of Bare field reservoirs, Orinoco Heavy Oil Belt, Venezuela
The Orinoco Heavy Oil Belt is located in the southern part of the Eastern Venezuelan Basin, to the north of the Orinoco River. It covers an area of 54000 km2 in the Monagas, Anzoategui and Guarico states. A three-dimensional geological model of the most prospective reservoirs located within the Merecure and Lower Oficina formations of Tertiary age has been developed in an area of 188 km2 located within the Bare-Arecuna fields, using 3D seismic surveys and subsurface information from 48 wells. The reservoir characterization has been defined based on the seismic and geological interpretations and applying Seismic Stratigraphic concepts. Additionally,sedimentology, petrophysical and reservoir engineering data was used to define the geological model of the area with the purpose of detecting sandy reservoirs, calculation of the OOIP and the recoverable reservoirs associated. A fluvial sedimentary environment with braided channels of moderate energy was interpreted. A two normal faults system structural model, together with the stratigraphy and petrophysics, helped the development of three-dimensional static model,which allows definition of plans for future exploitation and the evaluation of profitability.
Heavy Oil Production Systems
2004 AAPG International Conference and Exhibition Technical Program