DEVICE FOR CROSSOVER CREATION Russian patent published in 2008 - IPC E21B43/04 

FIELD: oil and gas industry.

SUBSTANCE: invention can be used in the completing process and major repairing of oil and gas wells at a construction of gravel-alluvial screens for the pipe and annular room connecting at the organisation of a crossbar current of driving fluid, and also for a hydraulic testing of a hydraulic packer. It provides expansion of device functionality and improving of conducting works manufacturability with its use. The device contains a pressure valve with washover windows, the flap of a crossbar current with alluvial windows and a valve, a packer and an alluvial tube with the windows, having an end-to-end clearing hole and placed inside bodies of a pressure valve, the flap of a crossbar current and a packer. The pressure valve is furnished by the movable sleeve bridging washover windows in its body, and also by the movable stopper connected with an alluvial tube. The top of a valve spool of a crossbar current is executed in the form of a geared head. The top of an alluvial tube is executed in the form of serrated headstall. A teeth of a valve spool nose-piece of a crossbar current are in hooking with the teeth serrated headstall of an alluvial tube with possibility of an alluvial tube progin about the axis for combination of alluvial windows of a valve body of a crossbar current and an alluvial tube windows. On the bottom side of a valve spool of a crossbar current the collet is placed that going into hooking with the body of an alluvial tube.

EFFECT: expansion of device functionality for creation of a crossover and manufacturability improving of conducting works with its use.

3 cl, 6 dwg