ABSTRACT
The patterns of hydrogeochemical migration are different for aquifers of zones of active and delayed water exchange and for weakly permeable interbeds as long as in the first case a key role is played by convection transfer of matter but only a subordinate one in the other two. On the basis of the equations obtained for heterogeneous systems of mass transfer the same list of problems given in Sec. In complex conditions thread flows are constructed based on the results of modelling and all original data determined on the model. Such computations are given in the literature. Given the non-uniformity of the fields of velocities of filtration in side pore space, the boundary division between displaced and displacing waters lacks a sharp geometrical design. An analysis of the study reveals that factors and mechanisms of mass transfer as elements of heterogeneity appear depending on the characteristic scale of the study.
