Straddle packer equalization and self recovery module

摘要

A packer that may be used to isolate a portion of a wellbore and a method of using the packer within the wellbore. The packer includes a body with a central bore, an upper sealing element, a lower sealing element, treatment ports, upper equalization ports, and a sleeve positioned within the central bore. The sleeve may be moved to selectively permit fluid communication through the treatment ports and the upper equalization ports. The packer may include lower equalization ports and the sleeve may be moved to also selectively permit fluid communication through the lower equalization ports. The sleeve may include a closed end and an inner wall that separates a secondary cavity from a main cavity. The sleeve includes a plurality of openings that either permits or inhibits fluid communication through the ports of the packer depending on the position of the sleeve within the central bore of the packer.

主权项

1. A packer comprising:
a body having a central bore; an upper sealing element connected to an exterior of the body; a lower sealing element connected to the exterior of the body; a treatment port, the treatment port permitting fluid communication between the central bore and the exterior of the body between the upper and lower sealing elements; an upper equalization port, the upper equalization port permitting fluid communication between the central bore and the exterior of the body above the upper sealing element; and a sleeve positioned within the central bore, wherein the sleeve may be moved to selectively permit fluid communication through the treatment port and the upper equalization port, the sleeve comprises a closed end and an inner wall that separates a secondary cavity from a main cavity within the sleeve, the secondary cavity in fluid communication with an exterior of the sleeve through at least one opening in the sleeve.