«Proceedings of Gubkin University»

Physical meaning of current displacement efficiency and volumetric sweep efficiency and their direct calculation based on three-dimensional reservoir models

UDC: 622.276.4
DOI: -

Authors:

¹ National University of Oil and Gas “Gubkin University”, Moscow, Russian Federation

Keywords: current displacement efficiency, current volumetric sweep efficiency, oil recovery factor, waterflooding, mobile oil reserves

Annotation:

The paper proposes a new approach to the direct calculation of the current values of displacement efficiency and volumetric sweep efficiency coefficients during the development of oil fields. In the presented approach, the author's interpretation of the physical meaning of these coefficients is proposed, on the basis of which a methodology for calculating them at each time point is proposed, taking into account changes in the distribution of oil saturation during development, including irreversible ones associated with an increase in fixed reserves, oil spreading in the area above the GOC and below the WOC. A synthetic example shows the application of the proposed calculation methodology and provides an explanation of the results obtained.

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