Binary pore structure characteristics of tight sandstone reservoirs

ZHU Haihua,ZHANG Tingshan,ZHONG Dakang,LI Yaoyu,ZHANG Jingxuan,CHEN Xiaohui

Table 2 Mercury intrusion data of 14 samples.

No. Porosity/ % Permeability/ 10-3 μm2 Oil saturation/ % Displacement pressure/MPa Median pressure/MPa Maximum connection radius/μm Peak radius/μm Maximum mercury saturation/% 1 5.0 0.0276 7.83 0.08 0.09 64.93 2 7.4 0.0840 30.84 4.48 29.67 0.16 0.09 60.30 3 8.3 0.0700 4.89 28.79 0.15 0.09 48.57 4 8.4 0.0670 50.20 5.58 27.69 0.13 0.07 61.60 5 8.8 0.0891 38.79 7.89 45.73 0.09 0.07 50.60 6 9.0 0.0660 44.86 3.11 9.91 0.24 0.12 71.80 7 9.2 0.0570 41.99 3.92 11.23 0.19 0.08 76.00 8 9.7 0.0420 45.41 5.31 18.65 0.14 0.09 69.20 9 9.8 0.0500 31.12 5.77 14.91 0.13 0.09 75.20 10 10.2 0.1000 45.23 4.02 10.64 0.18 0.10 77.10 11 11.1 0.1250 41.70 2.58 6.78 0.11 0.15 84.93 12 11.7 0.2370 2.86 12.39 0.26 0.15 77.90 13 12.5 0.2250 23.70 2.27 9.30 0.33 0.18 81.23 14 13.8 0.2820 72.31 1.41 3.78 0.52 0.25 75.00