Patent ID: 7878246
Filing Date: 2011-02-01
Classification: C09K,E21B

Abstract:
1. A method for perforating a well made of a wellbore in a formation comprising the steps of: a. placing a perforating device comprising at least one explosive perforating charge in the wellbore; b. placing a perforating fluid comprising at least one viscoelastic surfactant in the wellbore between the perforating device and the formation; c. detonating the perforating device and allowing formation fluids to enter the wellbore; wherein as a result of the detonation, communication is established between the wellbore and the formation, and at least a portion of the perforating fluid is put in communication with the formation; and wherein the wellbore further contains in at least a portion thereof saline water or brine with a salt concentration above 0.96kg/L.