Drilling in karstified carbonates

Abstract

Karst cavities and depressions are collectors of various minerals, such as oil and gas, drinking and industrial waters, bauxite, various ores, phosphates, diamonds, gold and tin stone, refractory clay and many others. Of these, oil and gas are of paramount importance. To carbonate 40% of oil is associated with karst reservoirs and a significant percentage of gas. 40% of oil and a significant percentage of gas are confined in carbonate karst reservoirs.