METHOD OF SIMULTANEOUS-SEPARATE OPERATION OF OIL WELL AND ROD UNIT FOR ITS IMPLEMENTATION Russian patent published in 2018 - IPC F04B47/02 E21B43/14 

FIELD: oil and gas industry.

SUBSTANCE: invention relates to the oil industry and can be used for simultaneous-separate operation of wells equipped with downhole rod pumps. Method is that the rotation of the pump plunger for each stroke of the rocking machine is transmitted to the switching body alternately connecting the submerged pump cavity through the side flaps with the upper and lower layers during the full revolution of the rod string. Ratio of the sampling periods of the products of both formations is set by the switching body in accordance with the required fluid selections. During sampling periods, measurements are made of the rates of each formation, wherein the water cut of the production of each formation is determined with a stopped rod shaper by sampling the liquid at the wellhead after the time necessary for complete replacement of the liquid in the tubing string with the production of the formation under study. In the installation in the lower part of the cylinder of the pump, a switching body is sealed in the form of a rotary cup with horizontal through holes in the cylindrical part made at different levels of the holes in the pump cylinder, with a ratio of lengths along the circumference equal to the ratio of the sampling of liquids from the seams. Contains figured through holes in the bottom. To the plunger of the pump, a rod with a cross-section, geometrically similar to the figured hole in the bottom of the glass with a possibility of free passage through it, with the windows in the upper part, is fixed from below. Contains a plug in the lower part and a length exceeding the stroke length of the pump plunger. Inside the branch pipe there is a pipe, which is muffled from below, forming a concentric channel communicating the lower side suction valve of the pump with the lower productive layer.

EFFECT: simplifies the design and improves the reliability of well equipment.

2 cl, 4 dwg