Which method includes using approved chemicals to improve yield in carbonate formations?

The method that involves using approved chemicals to improve yield in carbonate formations is chemical well development. This technique is particularly useful in enhancing the permeability of carbonate rocks, which can be naturally less permeable compared to other formations like sandstone. By introducing specific chemicals into the well, the process helps to dissolve or disaggregate the carbonate material, improving fluid flow and increasing the well's yield.

This approach is often targeted at wells experiencing reduced flow rates due to mineral deposits or formation clogs, which are common in carbonate environments. By carefully selecting the appropriate chemicals, groundwater professionals can mitigate issues that negatively impact the efficiency of water extraction, ultimately leading to sustainable groundwater management.

Other methods mentioned do not specifically involve the use of chemicals. Jetting and mechanical surging are physical techniques that focus on using water or mechanical force to dislodge sediments or blockages within the borehole. Similarly, air surging employs air pressure to achieve similar outcomes. While these methods can be effective in certain contexts, they do not involve chemical enhancements specifically aimed at improving yield in carbonate formations like chemical well development does.