FIELD: engineering of well jet plants for testing oil and gas wells.
SUBSTANCE: plant contains body with drain ports, and an insert with jet pump. Insert contains through channel, channel for feeding active substance into nozzle of jet pump, channel for feeding drained substance to jet pump, connected to through channel, and outlet channel. Above the channel or supplying drained substance in through channel a mounting position is made with sealing unit installed in it. In aforementioned unit an axial channel is made for letting through it and through channel of cable for movement of well equipment along the well shaft. Outlet channel is connected to annular space. Packing elements are mounted on the insert. Support bushing, moveable in axial direction and spring-loaded relatively to the body, is installed in the body. An insert with jet pump is mounted on mounting position made in support bushing. Support bushing is made with drain ports in its wall. Circular recess is made in the body for limiting movement of the support bushing. In lower position of support bushing, outlet channel is connected to space surrounding the body, and in upper position of bushing drain ports of body are closed by the wall of support bushing.
EFFECT: decreased times of research, maintenance and completion of wells, and also increased trustworthiness of invention about physical properties of productive bed.
2 cl, 3 dwg
