FLUID FLOW RATE UNDER HYDRAULIC IMPULSE EFFECT ON THE BOTTOM-HOLE AREA IN OIL RESERVOIR
D. S. Evstigneev1, M. V. Kurlenya1, V. I. Pen’kovskii2, A. V. Savchenko1
1Chinakal Institute of Mining, Siberian Branch, Russian Academy of Sciences, Novosibirsk, 630091 Russia
2Lavrentiev Institute of Hydrodynamics, Siberian Branch, Russian Academy of Sciences, Novosibirsk, 630091 Russia
Keywords: Нефтяная залежь, импульсы давления, двухфазная фильтрация, призабойная зона, Oil reservoir, pressure pulses, two-phase percolation flow, bottom-hole area
Abstract
The solution is presented for the problem on oil percolation flow in reservoir at the present and time-varying pressure difference between the injection and production wells. The zone of capillary water blockage in the bottom-hole area is determined. The algorithm is proposed for calculating fluid pressure on the bottomhole by the reading of echosounder installed at the well mouth. The invasion zone of the pressure fluctuations in the reservoir is estimated, and their effect on influence enhanced well production is shown.
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