Hydraulic fracturing, or fracking, is a mining technique that greatly enhances oil- and gas-well productivity and is being aggressively deployed all over the world and particularly in North America. Frac sand is used in hydraulic fracturing for the recovery of gas and oil from previously inaccessible deposits and dormant wells.
The basic process was first used by oil producers in the 1860s as a method to stimulate shallow hard-rock wells. It was next applied to water and gas wells with the water-and-sand based technique in the 1940s. With the advent of specialized frac sand in the late 1990s, the process was perfected for use in oil and gas wells.