Methods for stimulating hydrocarbon-bearing formations

A method for the fracking or stimulation of a hydrocarbon-bearing formation, said method comprising the steps of:

• providing a wellbore and a casing in said wellbore;
• inserting a plug in the wellbore at a predetermined location;
• inserting a perforating tool and an acidic composition into the wellbore, wherein said acidic composition is in contact with both said perforating tool and casing, and wherein the acidic composition comprises an acid consisting of HCl:alkanolamines;
• positioning the perforating tool within the acidic composition near said predetermined location, wherein the acidic composition is in contact with the perforation tool when the acidic composition and the perforating tool are inserted into the wellbore;
• perforating the wellbore with the perforating tool thereby creating a perforated area and acid soluble debris;
• allowing the acidic composition to come into contact with the perforated area and acid soluble debris for a predetermined period of time to prepare the formation for the stimulation;
• removing the perforating tool from the wellbore;
• and
• initiating the fracking or stimulation of the perforated area using a stimulation fluid.