PROCESS FOR CREATING FLOW CHANNELS IN A CARBONATE RESERVOIR, PROCESS TO REMOVE WELL INSIDE DAMAGE IN A CARBONATE RESERVOIR, AND SOLUTION

摘要

PROCESS FOR CREATING FLOW CHANNELS IN A CARBONATE RESERVOIR, PROCESS FOR REMOVING WELL INSIDE DAMAGE IN A CARBONATE RESERVOIR, AND SOLUTION. The present invention provides processes for creating "wormholes" in carbonate reservoirs through contacting a formation with a solution comprising N, N-diacetic acid (GLDA) glutamic acid and / or a salt thereof, N-methylglycine-N, N-diacetic acid (MGDA) and / or a salt thereof, or a combination of the same. The present invention also provides 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, methylglycine-N, 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-N-diacetic acid methylglycine (MGDA) and / or a salt thereof, or a combination thereof.