DOWNHOLE FILTER CLEANING DEVICE Russian patent published in 2020 - IPC E21B37/08 

FIELD: oil, gas and coke-chemical industries.

SUBSTANCE: invention relates to oil and gas industry, specifically to cleaning filters from colmation. Device includes control unit on surface, downhole part of device, which contains brush unit and installed in tight housing unit drive, oscillation generator, geophysical cable. Control unit is made in the form of system unit with monitor. In the downhole part of the device there is a fixing unit, a drive of the block of brushes connected to the block of brushes through a transfer mechanism having one input shaft and two output shafts. Brush unit is made in the form of two brush disks. Device includes downhole sensors and downhole controller of sensors, to input of which they are connected, and which output is connected through geophysical cable to system unit, downhole control controller connected by well control line with fixing unit, generator of oscillations, drive of brushes unit and with geophysical cable and further with system unit. Brush block is made in the form of two brush disks, made with possibility of rotation in opposite sides and having brushes in the form of sector with wire, and holder, in which a hole of elongated shape is made, through which cylindrical hinge extends. Brush disks contain radial rods installed inside cylinders and having thrusts, concentrically to radial rods there are springs resting against stops and holders.

EFFECT: providing visual control of the device position, monitoring and efficient control of the cleaning process, preventing twisting of the cable.

8 cl, 5 dwg