Abstract
In this paper, permeability characteristics of fine-grained rocks to water are investigated in the range of 1 to 8.7atm. and the following results are obtained: 1) clay particles between sands come in to flow as water pressure increases, 2) it takes a longer time for cross flowing to a stratum than parallel flowing to a stratum in test core, 3) the flow of water is laminar flow and subject to Poiseuille's law, and the following experimental relation is found between blow rate (Q0/A) and pressure gradient (Pi-Po/L), (Qo/A)=k(Pi-Po/L)X, where x=1.021-54, 4) mudstones of the Neogene Tertiary have capillary radius in the range of 0.16 to 1.48μ, 5) the flow rate is larger in parrallel flowing to a stratum than cross flowing to a stratum in test core.
