Study on Damage Mechanism of Waterflooding Development in Weizhou 11-4N Low-Permeability Oilfield

Figure 2

Core electron microscopic diagram of Liu 1 formation in Weizhou 11-4N oilfield (Wang Yanxing, [19]).

(a) A5 core Panorama

(b) A5 Core magnification (1000 times)

(c) Intergranular honeycomb layer

(d) Intergranular flaky illite