WELL SYSTEM FOR POSITIONING SELF-DEFLECTING MULTI-JOINT CONNECTION INSIDE MULTI-JOINT WELL Russian patent published in 2023 - IPC E21B41/00 E21B43/14 E21B7/04 

FIELD: oil and gas wells.

SUBSTANCE: group of inventions is related to a self-deviating multi-joint connection, a method for placing a self-deviating multi-joint connection in a multi-joint well, and a system for placing a self-deviating multi-joint connection in a multi-joint well. The self-diverting multi-joint connection comprises: a diverter having an uphole end and a downhole end, the diverter comprising a main tubular element, a first flow path from the main tubular element configured to connect to the wellbore, a second flow path from the main tubular element, configured to connect to a side wellbore, the second flow path having a side seal channel and a deflector ramp; and a side working part of the tool located inside the main tubular element and removably connected to the deflection device. The lateral working portion of the tool includes a nose end configured to extend into the second flow path, a valve element, and a side seal for engagement with the side seal channel. The valve element includes a sliding sleeve configured to move from a closed position covering the valve element to an open position opening the valve element.

EFFECT: increasing the efficiency of flow control along the trunks of a multi-joint well.

15 cl, 14 dwg