process for creating flow channels in a carbonate reservoir, process for removing damage from inside the well in a carbonate reservoir, and solution

摘要

A process for creating flow channels in a carbonate reservoir, a process for removing damage from the interior of the well in a carbonate reservoir, and a solution. The present invention provides processes for creating wormholes in carbonate reservoirs by contacting a formation with a solution comprising n, n-diacetic acid (glda) glutamic acid and / or a salt thereof, n-n-diacetic methylglycine acid (mgda) and / or a salt thereof, or a combination of the same. The present invention also discloses methods for removing well damage to a carbonate reservoir by contacting a damaged zone of the carbonate reservoir with a solution comprising (glda) and / or a salt thereof, n-methylglycine-ndiacetic acid ( mgda) and / or a salt thereof, or a combination thereof. The present invention further provides solutions which comprise a salt and which also comprise glda and / or a salt thereof, n-n-diacetic methylglycine (mgda) and / or a salt thereof, or a combination thereof.