Abstract: The present invention comprises a novel thread form and slip alignment device and method for anchoring drillable downhole tools, such as fracturing plugs, bridge plugs, or cement retainers within a wellbore. The slips are oriented circumferentially about upper and lower cones between upper and lower slips and upper and lower load members whereby the downhole tool is capable of withstanding piston forces resulting from differential pressure from above and below the set position through the utilization of a sealing element to maintain differential pressure from above and/or below the tool. Upon wellbore pressure application above and/or below the plug, relative axial movement between the mandrel and the slips, tool, and cones occurs until halted by an upper and lower stop disposed on the mandrel at each distal and proximate end. Further, components used in the slip alignment feature may be manufactured from weak materials or anisotropic material properties for milling.

Abstract: A technique provides a system and methodology for treating a plurality of zones, e.g. well zones. A plurality of flow control devices is located along a tubular structure, such as a well string in a wellbore. Each flow control device comprises a seat member with an annularly located recess having a unique profile relative to the annularly located recesses of the other flow control devices. Darts are designed with engagement features sized to correspond with selected annularly located recesses. Each dart may have an engagement feature of a specific length designed to engage the corresponding recess of a specific flow control device to enable actuation of that flow control device once the dart is dropped through the tubular structure.

Abstract: A technique provides a system and methodology for treating a plurality of zones, e.g. well zones. A plurality of flow control devices is located along a tubular structure, such as a well string in a wellbore. Each flow control device comprises a seat member with an annularly located recess having a unique profile relative to the annularly located recesses of the other flow control devices. Darts are designed with engagement features sized to correspond with selected annularly located recesses. Each dart may have an engagement feature of a specific length designed to engage the corresponding recess of a specific flow control device to enable actuation of that flow control device once the dart is dropped through the tubular structure.