| Matrix Acid Stimulation Abdollah Esmaeili1; Yermek Aubakirov1; Fatima Kanapiyeva1; 1AL-FARABI KAZAKH NATIONAL UNIVERSITY, Almaty, Kazakhstan; PAPER: 18/Energy/Regular (Oral) SCHEDULED: 14:50/Tue. 29 Nov. 2022/Game ABSTRACT: Matrix acid stimulation is a relatively simple technique that is one of the most cost-effective methods to enhance well productivity and improve hydrocarbon recovery. Carbonate acidizing is usually performed with HCL except in situations where temperatures are very high and corrosion is an issue. Acids attack steel to produce solutions of iron salts while generating hydrogen gas. Over the years, many different acidizing systems have been developed for specific applications.<br />Matrix acidizing, with the appropriate systems in correctly identified candidate wells, is the most cost-effective way to enhance oil production in sandstone and carbonate reservoirs. Increased understanding of the chemistry and physics of the acidizing process as well as improvements in well site implementation have resulted in better acidizing success. Use of computer software that includes all known rules and guidelines for sandstone acidizing can greatly improve the success ratio by eliminating inappropriate designs and standardizing treatments. New acid systems with improved performance were developed specifically to address many of the problems inherent in sandstone acidizing. |
