FACILITY FOR OPERATING OF WELL Russian patent published in 2008 - IPC E21B43/14 

FIELD: mining.

SUBSTANCE: facility includes packer in space between beds, pipe column with suction valve and radial apertures for communicating with annular space above packer and electro centrifugal pump. The electro centrifugal pump is equipped with an exterior pressure tight case designed so as to isolate pump suction from the annular space and to be hydraulically connected with the cavity of pipe column below the pump. A cylinder chamber is installed above the pump on the pipe column; the said chamber has interior sealing rings, a rest saddle, radial apertures for communicating with annular space and an interior circular groove at the level of radial apertures. In the cylinder chamber there is placed a removable connecting unit with an axial pass-through channel equipped with a gripping component, an exterior sealing ring and calibrating radial replaceable sleeves in its middle portion. In the lower portion of the connecting unit there is assembled a spring lock for fixation of the unit in the rest saddle of the cylinder chamber. At the flow line of the well a system for variation of liquid consumption is installed.

EFFECT: possibility to swap liquid and to control consumption and pressure of liquid pumping during inside and between well swapping.

2 dwg