TREATMENT FLUIDS FOR USE IN REMOVING ACID-SOLUBLE MATERIALS IN SUBTERRANEAN FORMATIONS

摘要

Treatment fluids comprising methane sulfonic acid (MSA) and fully protonated N-(phosphonomethyl)iminodiacetic acid (PMIDA) solubilized in the MSA. Methods including introducing the treatment fluids into a wellbore in a subterranean formation comprising acid-soluble material at a first treatment interval, and reacting the MSA and the PMIDA in the treatment fluid with the acid-soluble material at a temperature in the range of about 65° C. to about 210° C., wherein the reacting removes the acid-soluble material, thereby forming conductive channels in the subterranean formation.