System and method for salt removal from solid media

A method of reducing salinity of salt-containing material (SCM) generated during production of hydrocarbons from a reservoir, the method comprising:

• introducing the SCM into a wash system comprising at least one mixing tank;
• introducing feed water into the wash system in a countercurrent flow relative to the SCM;
• mixing the SCM and the feed water in the at least one mixing tank to produce brine and a washed SCM;
• discharging washed SCM from the wash system, the washed SCM having a lower salinity compared to the SCM that is initially introduced into the wash system;
• and
• discharging brine from the wash system, the brine being generated from the feed water and having a higher salinity compared to the feed water.