oa Acidizing Treatments for Tight Gas Sandstone Reservoirs

Stimulation of tight gas sandstone reservoirs is a challenge due to many variables<br>contributed into acidizing efficiency such acids type, concentration, volume, stages,<br>injection rate, reservoir temperature, fluids, and heterogeneity, clay type and content, and<br>soaking time. The presence of authigenic clays in reservoirs necessitates proper design of<br>acid treatment to avoid undesirable interaction of these clays with acids and released to<br>cause pore plugging. Therefore, stimulation fluids need to be properly selected to avoid<br>potential adverse results in these tight reservoirs.