INSTALLATION FOR DUAL OIL WELL OPERATION AND METHOD OF MEASURING FORMATION PRODUCTION Russian patent published in 2018 - IPC E21B43/14 F04B47/02 E21B47/10 

FIELD: oil industry.

SUBSTANCE: group of inventions refers to the oil industry and can be used to exploit wells in multi-layer oil deposits. Installation includes a tubular top tubular pump with a side suction valve, a bore and a discharge valve in the cylinder for extracting the production of the upper formation, the lower pump of the pipe version with the injection, suction valves for the extraction of the products of the lower formation and the intake branch pipe, passing through the packer separating the formations, hollow rods connected to the pump plunger. According to the invention, the side intake valve and the opening for the production of the upper formation are located at the top of the pump. Inside the lower end of the tubing string is a landing seat of the discharge valve, made in the form of a sliding sleeve with a thickened lower part located on a polished hollow rod with outlets at the top and connected to a column of conventional rods by means of a stepped coupling. Over the thickened part of the sliding sleeve in its lower position, an anchor is mounted in the form of elastic springs. Moreover, the cross-section of the seating seat for the sliding sleeve is made with a diameter not smaller than the diameter of the pump plunger. Method for measuring formation production is also disclosed.

EFFECT: technical result consists in simplifying the design of the pumping unit, increasing the reliability of its operation, as well as providing the possibility of separate measurement of the formation production.

2 cl, 2 dwg