ABOUT THE WASHOUT OF SOLUBLE IMPURITIES FROM AQUIFERS BY THE WORK OF COMMITTED WELLS
The process of dissolution of the sole of a horizontal aquifer, opened by a perfect well, is investigated. The boundary value problem for the equation of hydrodynamic dispersion is considered to construct the concentration field. It is assumed that the filtration flow is created by a perfect injection or production well in a horizontal aquifer. Layer from the top is limited to an impervious roof, and the bottom - soluble sole. Flow velocities are such that only convective transport is considered in the flow direction, and both types of mass transfer - molecular diffusion and mechanical dispersion-are taken into account in the direction perpendicular to the flow. The hydrodynamic dispersion coefficient depends linearly on the filtration rate. Considering that the dissolution process installed, the depth of dissolution of the sole of the formation is estimated from the concentration distribution found.