Research on the Sealability of Interlayer Based on Numerical Simulation Method

Abstract

Reservoir barriers and interlayers are an indispensable part of revealing the heterogeneity of oil reservoirs. Researching the plugging properties of reservoir barriers is of great significance to the recovery of remaining oil in the middle and late stages of oilfield development and the formulation of oilfield development plans. In this paper, using reservoir numerical simulation technology, based on the three types of reservoirs divided, a numerical simulation model of barrier-intercalation pluggability is established, and the influence of permeability and barrier thickness on the sensitivity of barrier-intercalation pluggability is studied and analyzed. To provide a theoretical basis for the development of remaining oil in the oilfield. Studies have shown that the trend of the permeability of the barrier on the cumulative oil production is mainly “first and then slow”, and the oil production gradually decreases with the increase of the permeability; the thickness of the barrier the impact on the cumulative oil production is mainly manifested in that as the thickness of the barrier increases, the cumulative oil production gradually decreases, and the rate of deceleration changes from abruptly to a slower to stable. The permeability and barrier thickness sensitivity analysis results obtained in this study, It provides a theoretical basis for the further development of the oilfield work area.