To protect oil and gas reservoirs during drilling, shielded temporary plugging technology has long been the key to oil and gas well drilling operations. Hard ultrafine calcium carbonate (CaCO3) has been widely used to effectively plug the storage, and to remove the plugging in time after drilling and completion effectively. Ultrafine calcium carbonate has the advantages of high strength, adjustable particle size, excellent bridging and plugging effect, and rapid and full reaction with acid.
