Abstract
This paper presents the results of a successful integrated reservoir modeling study carried out for the Riphean fractured reservoir of the Kuyumba oil field, in Eastern Russia. The study involved a detailed characterization of both matrix and fracture media, through the integration of well and seismic data. Based on the results obtained, a 3-D geological model was built and populated with matrix properties. It was upscaled into a simulation grid that was used for the building of a 3-D multiscale fracture model, further allowing the computation of equivalent fracture properties (porosity, permeability tensor and matrix block sizes). The integrated work carried out ultimately allowed computing the oil and gas volumes in place in both the fracture and matrix media, using deterministic and probabilistic approaches. The volume computations concluded to the predominance of fracture networks in terms of volumes in place, stressing the importance of a high-quality fracture characterization and modeling study
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