INSTALLATION OF SUCKER-ROD PUMP WITH PACKER Russian patent published in 2025 - IPC E21B43/00 E21B34/12 F04B49/03 

FIELD: obtaining oil from wells.

SUBSTANCE: invention is intended for use in oil industry, in particular for oil production from wells by sucker-rod pump units equipped with packers, including at isolation of interval of disturbance of production string or at simultaneous separate production from two formations. Installation of a sucker-rod pump with a packer consists of a sucker-rod pump driven by a drive through a sucker-rod string, a tubing string, a liner, a packer located above the productive formation. External branch pipe with limiters in the middle part is installed above the sucker-rod pump through a coupling-adapter. Inside the external branch pipe there is an internal branch pipe with two drain holes in the middle part. Inner branch pipe is equipped with bottom and top movable couplings with grooves and rubber seals. Upper movable coupling of the inner branch pipe is connected to the tubing string through the branch pipe with prismatic centralisers and is fixed with the outer branch pipe by means of metal pins installed in the corresponding holes made in the outer and inner branch pipes, with the possibility of sealing the inner space of the tubing string by means of rubber seals and by fixing the outer and inner nozzles with metal pins. When the tubing string moves upwards, the metal pins are made with the possibility of their shearing with the movement of the lower and upper movable couplings with the inner branch pipe inside the external branch pipe with the opening of the drain holes and the connection of the inner space of the tubing string with the annular space.

EFFECT: exclusion of liquid outflow to the wellhead in process of tubing string lifting, as well as reduction of duration of works in general and simplification of technological process.

1 cl, 2 dwg