Extracting metal e.g. magnesium, present in an underground formation, comprises injecting acid gas in underground formation, tapping water of the formation, and extracting the metal from the tapped water

摘要

Extracting metal present in an underground formation, comprises: injecting an acid gas in the underground formation, where the gas releases the metal present in the formation; tapping water of the formation, where the tapped water includes the metal; and extracting the metal from the tapped water.