What is the main reason for well acidification?

Well acidification primarily aims to increase the well's productivity. This process involves introducing acids into the well system to dissolve certain minerals and deposits that can clog the well or impede the flow of water or oil. Over time, minerals such as calcium carbonate can accumulate and restrict the access to water, reducing the efficiency of the well. By effectively removing these mineral buildups, well acidification enhances the flow rates, improves the overall productivity of the well, and often leads to increased yields.

While the other options address important aspects of well management, they are not the primary reason behind the acidification process. For instance, lowering pH levels, while potentially beneficial for certain chemical reactions, is a resultant effect rather than the main objective. Similarly, preventing bacterial growth can be an auxiliary benefit of acid treatment but is not the central goal of acidification. Hence, the focus remains on enhancing productivity as the core reason for employing well acidification techniques.