Stimulation of Capillary Imbibition in Oil Reservoir Treatment
D. S. Evstigneev
Chinakal Institute of Mining, Siberian Branch, Russian Academy of Sciences, Novosibirsk, Russia
Keywords: Capillary imbibition, pressure surges, two-phase flow, vibration treatment
Abstract
The author proposes a problem formulation for the capillary rise process when one of the capillary ends is connected to the atmosphere and the other end is put in a liquid-filled tank with walls subjected to vibrations. The calculations show that pressure surges essentially reduce the time of capillary imbibition. Given no vibration in the liquid flow from the tank to the capillary, the water rise height found from the numerical solution of the formulated problem coincides with the calculation from the Lukas-Washburn equation and agrees with the test data. The generalization algorithm for the problem to be applicable to capillary imbibition in porous media saturated with immiscible liquids is presented.
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