FIELD: completion of wells.
SUBSTANCE: completion shell is intended for lowering into well using wellhead equipment or blowout preventer and comprises casing string having first end, a drill pipe having a first end and a second end passing through wellhead equipment or a blowout preventer and connected with possibility of disconnection by first end with casing string and retaining casing string at casing string lowering into well. At that, said casing comprises group of tubular sections. At least two sections represent annular barrier sections. Each section comprises at least one annular barrier. Annular barriers are arranged at specified distance from each other. Each annular barrier comprises expanding coupling surrounding tubular part. Expanding coupling is connected with tubular part. Tubular part forms part of casing string and has hole for fluid inlet under pressure in order to expand coupling, and second end, which is closed. At that, well completion shell additionally comprises pressure generating device, connected by means of fluid to the second end of the drill pipe to create fluid pressure inside the drill pipe and inside the casing, which is higher than pressure of the formation fluid, and serves to expand expanding coupling of at least two sections of annular barrier. One of the pipe sections is a valve section having valves or an inlet flow control section.
EFFECT: technical result is higher completion efficiency due to its simplification and reduction of terms.
23 cl, 17 dwg
