Mechanisms and experimental research of ion-matched waterflooding to enhance oil recovery in carbonate reservoirs: A case of Cretaceous limestone reservoirs in Halfaya Oilfield, Middle East

PENG Yingfeng,LI Yiqiang,ZHU Guangya,PAN Deng,XU Shanzhi,WANG Xiuyu

Table 3 Mineral composition of the Mishrif natural core.

Number Main mineral content/% Quartz Potassium feldspar Calcite Dolomite 1 0.6 0.4 97.2 1.8 2 0.5 0.3 94.6 4.6 3 0.5 0.3 96.2 2.9