Research Article

Study on Distribution Characteristics and Displacement Mechanism of Microscopic Residual Oil in Heterogeneous Low Permeability Reservoirs

Figure 1

Schematic diagram of planar heterogeneous photolithographic glass model: (a) the permeability ratio of 1; (b) the permeability ratio of 6; (c) the permeability ratio of 9.
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(b)
(c)