“…With the refinement of exploration and production of oil and gas fields, the sensitive damage of reservoir is evaluated as one of the important factors influencing development effect, thus a lot of studies have been carried out on the formation mechanism, distribution characteristics and protective measures of reservoir sensitivity (Krueger, 1986;Zhang et al, 1996;Menouar et al, 2000;Civan, 2007;Alotaibi et al, 2009;Tian et al, 2015), with main focus on the evaluation and prediction of sensitivity effect and type, and its algorithm (Zhao Xingyuan, 1992;Peng Chunyao et al, 1999;Sun Jianmeng et al, 1999;Kang et al, 2000;Menouar et al, 2000;Zhao Dahua et al, 2002;Li Yonglin et al, 2003;Yin Xin, 2005;Zhao Xingyuan et al, 2005;Wang et al, 2006;Zhang Guanlong et al, 2006;Civan, 2007;Yuan Wenfang et al, 2014;Ma et al, 2016;Zhao Xiaohui et al, 2016). Several qualitative or semi quantitative prediction methods for the sensitivity of acid-sensitive minerals in the reservoir have been established gradually (Min et al, 2004;Zhang et al, 2007;Bahrami et al, 2011;Watheq et al, 2018). However, the current evaluation criterion of reservoir sensitivity is based on the damage rate of permeability in testing samples (absolute value of change rate of permeability) (Moghadasi et al, 2010;Habibi et al, 2012;Dou Honggen et al, 2016;Li et al, 2017), which masks the sensitization mechanism caused by different sensitivity effect, and could not benefit in restraining sensitivity effect in the reservoir (Yu et al, 2014;D...…”