PTIMIZING WELL PERFORMANCE USING MATRIX ACIDIZATION TO MITIGATE FORMATION DAMAGE IN SANDSTONE RESERVOIRS
Abstract
Formation damage in sandstone reservoirs, caused by factors such as clay swelling, fines migration, and scale deposition, significantly reduces permeability and well productivity. This study investigates the optimization of matrix acidization—a well-stimulation technique that dissolves obstructions within the reservoir rock to enhance permeability and hydrocarbon recovery. This research integrates simulation modeling using Eclipse software, enhanced with Python scripting for automation, to explore various acidizing techniques and their effectiveness under different reservoir conditions. Sensitivity analyses revealed the influence of key parameters, including mineral composition, temperature, and porosity, on treatment efficacy. Results demonstrated that optimized acid systems, particularly organic-HF blends, achieved significant permeability improvements and reduced skin factors, enhancing well productivity by up to 150%. The study concludes that tailored matrix acidization treatments can effectively mitigate formation damage, maximize hydrocarbon recovery, and provide economically viable solutions for sandstone reservoirs.
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