TOOL FOR PREPARATION OF PRODUCTION STRING FOR OPERATION OF PUMPING EQUIPMENT AND METHOD OF USE THEREOF Russian patent published in 2024 - IPC E21B23/06 E21B33/1295 

FIELD: pumps.

SUBSTANCE: group of inventions relates to a tool for preparing a production string for operation of pumping equipment and a method of using it. Tool comprises a packer fixed in the well and having an anchor assembly and a seal assembly with a collar. Tool also has an inner housing with a sleeve. Besides, it comprises dies of the anchor assembly extending radially. It also contains a sliding bushing. Also comprises a shear element; detachable setting tool accommodates piston and hollow rod. Besides, it contains reservoir of well container-hydraulic cylinder, hydraulically connected with sub-piston cavity of setting tool. It also contains a submersible electric motor. Collar of the sealing unit is located below the upper conical stop oriented with its vertex downwards, with the possibility of expansion on it, accompanied by movement of the anvil and movement of dies of the anchor unit. Lower part of inner cavity of well container-hydraulic cylinder is hydraulically connected with below installed hydraulic pump and setting tool. Drive shaft is passed through the well container-hydraulic cylinder, which is made with possibility of torque transfer to the hydraulic pump shaft. On the lower end of the hollow rod there are annular grooves designed to hold the hollow rod in the setting tool by means of a shear screw. Sliding bush is provided with helical groove or several annular grooves on its inner surface. Besides, the sleeve has a spiral thread on its outer surface. Packer consists of a shaft on which an anchor assembly and a sealing assembly are placed. Anchor heel and cone are installed on the lower part of the inner housing of the packer. Packer is fixed to the inner belt of the head. Hollow rod in lower part is made with conical transition of two diameters and is equipped with external grooves. In the upper part of the packer there is a sleeve made with possibility of connection to the tip. Hydraulic pump used is an electrically driven centrifugal pump of an inverted type, which is connected to a submersible electric motor.

EFFECT: improving operating reliability of the setting tool, reducing the number of the used equipment, simplifying and reducing the operations for installation of the packer and the setting tool.

4 cl, 8 dwg