INSTALLATION FOR PUMPING FLUID INTO THE FORMATION Russian patent published in 2017 - IPC E21B43/20 

FIELD: oil industry.

SUBSTANCE: invention relates to oil industry and, in particular, to installations for pumping fluid into the reservoir, oil displacement and maintaining the reservoir pressure. Installation comprises flow head equipment, centrifugal pump with motor, tubing string – TS. TS is connected to the output of the centrifugal pump. There is also a packer and tubing, that is interconnected with cavity of TS and pump outlet. Flow head device is made with plug and is intended for the installation of measuring devices and for the delivery of geophysical device into the cavity of the TS. Furthermore, installation is equipped with tubing. Centrifugal pump with motor is lowered on them outlet of which is connected with tubing. TS is connected to the flow head device of flow head equipment. Tube is made with the possibility of the communication of the pump outlet with the TS through the tubing and flow head device with a plug providing the possibility of processing bottomhole formation zone through the flow head device and the TS. In case of loss of tightness of the packer a possibility to reverse fluid injection from the formation into the formation through tubing and TS is provided as well as the possibility of reverse fluid outflow from the formation via the TS.

EFFECT: technical result is improving the reliability of equipment.

1 cl, 1 dwg, 1 tbl, 1 ex