Water-sensitive damage mechanism and the injection water source optimization of low permeability sandy conglomerate reservoirs

WANG Lei,ZHANG Hui,PENG Xiaodong,WANG Panrong,ZHAO Nan,CHU Shasha,WANG Xinguang,KONG Linghui

Fig. 4. Scanning electron microscope images of core sample 3 before and after water flooding (with injected water decreasing in salinity).