Junction isolation apparatus and methods for use in multilateral well treatment operations

摘要: Specially designed apparatus is utilized to provide convenient isolation of a wellbore junction from pressure and corrosion during an acid fracturing stimulation process performed in main or branch portion downhole the junction. The has outer tubular which may be installed, single trip into wellbore, straddling sealing relationship with junction, inner structure sealingly removably received within structure. Fracturing pumped directly down then formation stimulated, via interior structure, after removal subsequent its use facilitating test lower end seal