WIRE LINE HOLD DOWN DEVICE

摘要

A gas generating type fracturing tool includes a propellant charge and an ignitor for initiating combustion of the propellant. When combustion starts, a pressure buildup inside the tool manipulates a brake or drag acting against the inner casing wall to retard upward movement of the tool. A shear pin fails allowing a spring to move an element into frictional engagement with the casing string.