Mineral scale may be defined as an adherent deposit of predominantly inorganic compounds. A common process leading to scale formation is the precipitation of sparingly soluble salts from oilfield brines. Some oilfield brines contain sufficient sulfate ions (SO42-) in the presence of barium ions (Ba2+) or strontium ions (Sr2+), or both, that the potential for forming barium sulfate (BaSO4) scale or strontium sulfate (SrSO4) scale, or both, exists due to changes in physical or chemical conditions. Often the formation of scale results in reduced production and increased maintenance costs. In some locations, naturally occurring radioactive materials (NORM) have been found to incorporate themselves into the scale. This complication may result in significant health, safety, and liability concerns and increased scale disposal costs.