Conceptual Geological and Hydrodynamic Model of the Famennian-Tournaisian Reservoir as a Tool for Predicting the Effectiveness of the Reservoir Pressure Maintenance System, using the Example of the Sukhareva Field

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Abstract

The paper outlines the technology for constructing a new conceptual geological model taking into account the structural features of the Famennian-Tournaisian deposit (T-Fm formation), which is represented by an organogenic reef structure of Late Devonian age, overlain by Paleozoic enclosing structures. This approach represents the distribution of a grid of layers of a geological model according to sedimentation processes. Based on a three-dimensional digital geological model, a geological and hydrodynamic model was created and adjusted to actual development indicators. When adapting the model to the actual dynamics of reservoir pressure, zonal features associated with the distribution of filtration and reservoir properties were identified. The dynamics of water cut were adjusted based on the results of geological and field analysis, as a result of which the source of water cut was determined for each well. Based on the geological and hydrodynamic model adjusted to the actual development indicators, forecast options were calculated: basic - at current levels of fluid production and taking into account geological and technical measures in accordance with the approved industry development program. The author's version was calculated with optimization of planned activities, which made it possible to stabilize the falling dynamics of reservoir pressure and obtain additional oil production. The model construction technology is recommended for use in fields confined to organic reef structures of the Perm Kama region and adjacent regions of the Volga-Ural and Timan-Pechora oil and gas provinces.

Keywords

organogenic reef structurefractured-cavernous-pore type of reservoirreservoir properties3D seismic surveyfaciesconceptual geological modelmulti-gridgeological base rescalinggeological-statistical section“non-reservoir”fracture coveragedual porosity model and permeabilitygeological-hydrodynamic modelreservoir pressure maintenance systemadaptationaquiferChen graphsmultivariate modelingproxy model

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Article information

Published
22 March 2024
Issue date
22 March 2024
Issue
Vol. 23, No. 2 (2023)
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