Patent ID: 8561687
Filing Date: 2013-10-22
Classification: E21B

Abstract:
1. A method of pressure containment in a wellbore having multiple zones to be fractured comprising the steps of: providing a coiled tubing with a set of fixed pressure containment devices on the coiled tubing; providing a movable pressure containment device that can be positioned anywhere along the length of the coiled tubing uphole of the set of fixed pressure containment devices; inserting the coiled tubing into the wellbore to a first depth while maintaining the movable pressure containment device at surface; fixing the movable pressure containment device in a position on the tubing at a desired distance from the set of fixed pressure containment devices; and inserting the tubing into the wellbore to a second depth; whereby the set of fixed pressure containment devices straddle a target zone to be fractured and the moveable pressure containment device is positioned uphole of top most perforation located above the target zone.