Finely ground barite is used as a weighting agent for drilling fluids in the oil and gas industry. Excalibar Minerals provides the highest quality barium sulfate for our customers, and features a variety of products for drilling and completion fluids applications. 

Calcium carbonate is added to drilling fluids in the oil and gas exploration market as a formation-bridging and filter cake-sealing agent. Calcium carbonate is also a weighting material which increases the density of drilling fluids to control the downhole pressure.