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In this study, we systematically investigate the effect of core-scale heterogeneity on the performance of miscible CO2 flooding under various injection modes (secondary and tertiary). Manufactured heterogeneous core plugs are used to simulate vertical and horizontal heterogeneity that may be present in a reservoir. A sample with vertical heterogeneity (i.e. a layered sample) is constructed using two...
The mechanism(s) of low salinity water flooding (LSWF) must be better understood at high temperatures and pressures if the method is to be applied in high T/P kaolinite-bearing sandstone reservoirs. We measured contact angles between a sandstone and an oil (acid number, AN=3.98mgKOH/g, base number, BN=1.3mgKOH/g) from a reservoir in the Tarim Field in western China in the presence of various water...
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