Method and System for Determining Contact Angle of Porous Media
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United States of America Patent
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Oct 31, 2019
app pub date -
Apr 22, 2019
filing date -
Apr 28, 2018
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Abstract
The present invention discloses a method and system for determining contact angles of porous media. The method includes: in a displacement simulation experiment, injecting a displacement fluid into a real core, and performing computed tomography (CT) scanning on the core to determine three-dimensional images at different oil displacing moments; segmenting different phases of the three-dimensional images to obtain segmented three-dimensional images; marking a contact line between different phases according to the segmented three-dimensional images, where the phases are underground fluids or displacement fluids and a rock matrix in the displacement simulation experiment; and determining a contact angle of a porous medium at different positions at different moments according to the contact line. The method and system provided by the present invention can obtain the dynamic changing process of the contact angle at different positions in the core at different displacement moments, reflect the wettability of the real reservoir environment more accurately, and provide the basis for greatly enhancing oil recovery of the oil-gas field development.
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