Computer aided design of a horizontal well without flush tubes providing optimal operating conditions with regard to varying pressure along horizontal well length, to Shimmer Walls the presence of deviated and slant segments is considered.As a result a well-head pressure - flow rate plot is computed.Allowable values of bottom-hole pressure, of horizontal segment lengths and diameters that ensure transport of solid particles are taken into account when building well-head pressure - Concealer Brush flow rate plot.