pneumatic bag shutter device for unblocking, cleaning and hydraulic fracturing of tubular wells and method for cleaning, unblocking and hydraulic fracturing of tubular wells

摘要

The device (1) has at least two pneumatic bags (2 and 3) interconnected, at least 1.20 m from each other, and fixed by metal bars (4), and inflated by compressed air, coming from the surface, which reaches them via tubing (5) and flexible tube (6) polymeric, such pockets (2 and 3) pneumatic positioned inside the tubular well by means of tube (7) extendable, which also conducts pressurized water to the zone bounded to be worked. The method consists of using the shutter device (1) to delimit airtight zones along the depth of pre-existing tubular wells, establishing an airtight zone for pumping water in a given pressure range, favoring cleaning, unblocking and / or opening and prolongation of existing fractures in the defined area or the isolation of unproductive area.