Methods for placing an annular pack in a well include treating of the gravel in the annular pack to inhibit bridging and the formation of voids in the annular pack. The gravel can be treated to form a coating that improves the lubricity of the gravel. The gravel also can be treated with a surface-active agent. The treatment of the gravel inhibits clumping of the gravel particles which forms bridges in the annular pack.