Wire line hold down device

Details Wire line hold down device Wire line hold down device

E - Fixed Constructions

21

B

166/23

E21B 43/263 (2006.01)

Patent

CA 1302871

Abstract of the Disclosure A gas generating type fracturing tool includes a propellant charge and an ignitor for initiating combustion of the propel- lant. 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.

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