Abstract
The effectiveness of exploration and subsequent production drilling and resource base assessment is determined by the reliability of the geological model of the field, the quality of which depends on the most likely distribution of parameters in the inter-well space of the deposit and the most accurate determination of water-oil contact (WOC).
The position of the WOC and the size of the transition zone are key parameters for evaluating the field's reserves, determining the depth of well hole targets, and monitoring the development of the field. The purpose of this work was to determine the free water level (FWL), the size of the transition zone and WOC position on the basis of a integrated approach that takes into account well log interpretation data, capillarometric studies, well tests, results of hydrodynamic logging, production logging test (PLT) and well operation in the carbonate deposits of a complex lithofacial structure of a unique field in the South of Iraq.
