Analysis on the influencing factors of imbibition and the effect evaluation of imbibition in tight reservoirs

YANG Zhengming,LIU Xuewei,LI Haibo,LEI Qihong,LUO Yutian,WANG Xiangyang

Table 1 Basic physical properties of the core samples.

No. Influence Factor Length/ cm Diameter/ cm Permeability/ 10-3 μm2 Poro- sity Wett- ability 1 Permea- bility 7.08 2.50 0.21 0.095 Weakly water-wet 2 7.23 2.50 1.52 0.138 Weakly water-wet 3 7.16 2.50 8.16 0.168 Weakly water-wet 4 Frac- ture 6.95 2.50 0.22 0.098 Weakly water-wet 5 6.95 2.50 0.22 0.010 Weakly water-wet 6 Wett- ability 7.12 2.50 0.26 0.101 Strongly water-wet 7 7.12 2.50 0.26 0.102 Weakly water-wet 8 7.12 2.50 0.26 0.099 Neutral 9 7.12 2.50 0.26 0.101 Strongly oil-wet