CASING CONVEYED SYSTEM FOR COMPLETING A WELLBORE

摘要

A wellbore completion system utilizes casing conveyed devices to establish a fluid communication path between a downhole formation (F) and the casing string (60). Extendible pistons (12) are mounted in the wall of the casing pipe string and are extended toward contact with the downhole formation after the casing is set. An explosive device is mounted in the pistons and includes a detonator (64) and a shaped charge (58). The detonator is housed in a plug (19) threaded into one end of the piston. The shaped charge is housed in a canister (46) conveniently inserted into the other end of the piston. The explosives included in the system may thus be conveniently assembled at the well site. Explosives in the pistons are activated by a separately conveyed activation system (84, 89, 91, 93) which produces a pressure wave to detonate the explosives and establish fluid communication between the casing and the formation.