Patent attributes
A bridge plug comprises an axially compressible cylinder having plural expansion sleeves. A mandrel extends axially through the cylinder, and has a threaded portion engaged with the cylinder, such that rotation of the mandrel causes compression of the cylinder. A setting tool comprises a housing containing a motor and a drive shaft driven by the motor. The setting tool is configured to be removably coupled to a bridge plug with the drive shaft drivingly coupled to the bridge plug's mandrel, such that operation of the setting tool motor causes compression of the bridge plug. The setting tool is used to lower a bridge plug within a well casing, and to compress the bridge plug causing, outward protrusion of sealing members of the bridge plug to set the bridge plug in place. Cement may be applied above the set bridge plug to form an easily drillable seal.
