Abstract: An apparatus and system for producing a gel for the treatment of petroleum wells are disclosed herein. The apparatus comprises: a mixing fluid stream, the mixing fluid stream comprising: a mixing fluid inlet for accepting a mixing fluid; a first pump; a dry polymer inlet for accepting a dry polymer; a hydraulic mixer configured and adapted to mix the dry polymer with the mixing fluid to produce a concentrated gel; a dilution fluid stream for diluting the concentrated gel to produce a diluted gel, the dilution fluid stream comprising: a dilution fluid inlet for accepting a dilution fluid; a second pump; and an outlet coupled to the mixing fluid stream.