چكيده به لاتين
Proppants are solid particles that used in hydraulic fracturing in order to extract oil and gas from unconvetional reservoirs. Ideal proppants must have low density, high crushing strength and low acid solubility. Ceramic proppants from bauxite and Kaolin are storong and light but silica as a key ingredient is sucepible to HF corrosion. Recently silica free alumina systems with different additives are utilized to enhance the physical, mechanical, and chemical properties. In this study three different Alumina systems were investigated using additives including MgO, BaO, CaO, P2O5, MnO2, and TiO2. Bulk density, mechanical strength and acid solubility respectively were measured by boiling water, three points bending strength and 12wt%HCl-3wt%HF acid solution. The microstructure and phase analysis were surveyd by Scanning electron microscopy(SEM) and X-Ray powder diffraction. In the first system with 75wt%Al2O3, 5.5wt%CaO, 4.5wt%P2O5, 9wt%BaO, and 6wt%MgO the light and acid resistance body was created. In the second system the amount of Al2O3, CaO, P2O5 were similar and 6wt%BaO, and 9wt%MnO2 were added, therefore, the strengther and more acid resistance body was obtianed. and the third system using 86wt%Al2O3, 3wt%BaO, 7wt%MgO, 2wt%MnO2, and 2wt%TiO2 was the strongest, highest density and acid resistivity than Corundum.
