Ceramic proppant outlook trying to build a market on sand For many years and during the last golden period 2010 12 the proppant market share was in the order of 80% frac sand and 10% each for ceramic proppants CP and resin coated sand RCS Owing to E P companies pursuing innovative and lower cost fracturing treatments using sand this ratio has shifted to around 95% frac sand with 5% shared by CP and RCS