Figure 13

The distribution of pore throat of a tight sand core. The X-axis is the logarithmic distribution of the pore-throat size. The Y-axis is the distribution frequency of pore-throat distribution. The blue line represents the pore-throat distribution. The green represents the range of pore-throats that can be filled at current formation temperature and pressure conditions. The yellow represents the range of pore-throats that can be filled at the highest temperature and pressure during the accumulation process.