Experimental test method of competitive dissolution of CO<2> in oil-water mixture system
A technology of oil-water mixing and testing methods, which is applied in the direction of measuring devices, surface/boundary effects, instruments, etc., and can solve problems such as unreflected dissolution characteristics
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[0020] Further illustrate the present invention according to accompanying drawing and example below.
[0021] a CO 2 The experimental test method for competitive dissolution in an oil-water mixture system includes the following steps in sequence:
[0022] (1) Obtain separator oil samples and separator gas samples under the current production conditions of a high water-cut oil reservoir, according to the industry standard "Analysis Methods for Physical Properties of Oil and Gas Reservoir Fluids" (GB / T 26981-2011), at the original formation temperature (T 0 =85℃), current formation pressure (P 0 =23MPa), according to the gas-oil ratio GOR 0 =94.6m 3 / m 3 Configure crude oil fluid samples; prepare formation water according to the field water quality analysis report of the reservoir, see Table 1 for the analysis of formation water, and use industrial CO 2 gas.
[0023] Table 1 Formation water analysis data table
[0024]
[0025] (2) According to the distribution of unde...
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