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THE PLAY OF RESERVOIR CHARACTERIZATION IN THE FIELD DEVELOPMENT PLAN - CASE STUDY ON THE OIL FIELD (ROMANIA)

Nicoleta-Mihaela Ionescu

Abstract

Optimum reservoir recovery and profitability results from guidance by an effective reservoir management plan. Success in developing the most appropriate reservoir management plan requires knowledge and considerations of (1) the reservoir system, including rocks, fluids, and rock-fluid interactions, as well as wellbores and associated equipment and surface facilities; (2) the technologies available to describe, analyze, and exploit the reservoir; and (3) the business environment under which the plan will be developed and implemented. Reservoir management plans de-optimize with time as technology and the business environment change or as new reservoir information becomes available. Reservoir characterization is essential for planning appropriately scaled reservoir management plans. Nowadays in the oil industry the companies are implementing sound of reservoir management techniques through cooperative research and development projects. Good estimates in a field development plan give a solid foundation for decision in all phases of the petroleum activity. At the first meeting of the first International Reservoir Characterization, in Dallas, 1985, the attendees chose the following definition of reservoir characterization: ?Reservoir characterization is a quantitatively assigning reservoir properties, recognizing geologic information and uncertainties in spatial variability?. Traditionally, its goal has been to transfer quantitative information on reservoir property distribution with enough detail and accuracy to a numerical simulator so that the fluid-flow simulation predictions would match reservoir performance. Through simulation, an appropriately detailed and accurate model of reservoir property distribution enables the operator to avoid the deleterious effects of heterogeneities and exploit them the best economic advantage. To the extent that information supplied to the simulator is incomplete, inaccurate, or at an inappropriate scale, the ability to predict reservoir performance and maximize economic returns is lessened. In the papers will be presented a case study of field development plan from Romania, demonstrate the role of a good understanding about reservoir characterization.

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DOI resolver: doi.org/10.5593/sgem2019/1.1/s01.081

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