Patent ID: 7059407
Filing Date: 2006-06-13
Classification: E21B

Abstract:
1. A method of perforating and treating multiple intervals of one or more subterranean formations intersected by a wellbore, said method comprising: (a) deploying a bottom-hole assembly (“BHA”) using a tubing string within said wellbore, said BHA having a perforating device, a sealing mechanism and at least one pressure equalization means, and said BHA remaining attached to said tubing string while deployed in said wellbore; (b) using said perforating device to perforate an interval of said one or more subterranean formations; (c) actuating said sealing mechanism so as to establish a hydraulic seal in said wellbore; (d) pumping a treating fluid down the annulus between said tubing string and said wellbore and into the perforations created by said perforating device, without removing said bottom-hole assembly from said wellbore; (e) establishing pressure communication between the portions of the wellbore above and below said sealing mechanism through said at least one pressure equalization means; (f) releasing said sealing mechanism, and; (g) repeating steps (b) through (f) for at least one additional interval of said one or more subterranean formations.