Abstract: A downhole tool assembly including a sealing device and a sensing device for sensing parameters associated with the operation of the sealing device.

Abstract: A packer and actuator therefor configured for use in relatively high hydrostatic pressure environments. In a described embodiment, a packer for use in a subterranean well includes an actuator for setting the packer. The actuator includes multiple pistons circumferentially spaced apart from each other.

Abstract: A packer includes one dual, or double acting, slip and a single acting slip positioned on a mandrel on opposite sides of a packing element and a setting cylinder. The single acting slip is designed to resist forces acting on the mandrel in one direction. Setting forces generated by the setting cylinder are coupled to the mandrel through a releasing sleeve. When the releasing sleeve is decoupled from the mandrel, the slip setting forces on both slips and the packing element are released and the packer can be retrieved from a well. In a preferred form, the releasing sleeve may be decoupled from the mandrel by multiple means.

Abstract: Methods of releasing a well tool set in a wellbore are provided. In various embodiments, a well tool, such as a packer, is released from sealing and gripping engagement within a wellbore using alternate methods. A dual-string packer is described in which the packer may be released by severing a mandrel of the packer, displacing a piston of the packer, or by displacing a retaining device in a flow passage of the packer.

Abstract: Methods of releasing a well tool set in a wellbore are provided. In various embodiments, a well tool, such as a packer, is released from sealing and gripping engagement within a wellbore using alternate methods. A dual-string packer is described in which the packer may be released by severing a mandrel of the packer, displacing a piston of the packer, or by displacing a retaining device in a flow passage of the packer.

Abstract: Methods of releasing a well tool set in a wellbore are provided. In various embodiments, a well tool, such as a packer, is released from sealing and gripping engagement within a wellbore using alternate methods. A dual-string packer is described in which the packer may be released by severing a mandrel of the packer, displacing a piston of the packer, or by displacing a retaining device in a flow passage of the packer.

Abstract: An isolation valve for a downhole well completion system having a one piece frangible, ceramic sealing element and an extrusion resistant resiliently faced valve seat and a method for the use thereof is presented. Said sealing element is biased to the closed position and rotatable within a sealing element chamber from an open position during run in to a closed position as a result of the withdrawal of a wash pipe and a protector tube from the valve bore. Said frangible sealing element cooperates with said extrusion resistant valve seat to provide a reliable pressure resistant seal. After recovery of completion fluids from the well bore and pressure testing of the production string, the frangible sealing element is shattered by impacting with a tooth-faced blind box hammer.