CONTROLLED BYPASS VALVE Russian patent published in 2022 - IPC E21B34/10 

FIELD: oil and gas industry.

SUBSTANCE: invention relates to the field of the oil and gas industry, in particular to devices for extracting gel residues after hydraulic reservoir fracturing (hereinafter – HRF), reaction products after acid treatment, well development, geophysical studies of a reservoir by compression, well jamming, and it can also be used to extract well fluid by the gas lift method. A controlled bypass valve consists of a case with an internal channel. At ends of the case, there is thread for screwing a pump and compressor pipe (hereinafter – PCP) into an elevator, a filter and a valve block are sequentially fixed inside the case. The internal channel of the valve block communicates with the channel of the case and provides hydraulic connection of the valve block to the pipe PCP space. The valve block contains a control unit of valve opening, an HRF valve, a working valve, and a jet located sequentially inside the valve block. The control unit of valve opening opens the HRF valve channel only after a series of pressure pulses of a given amplitude, duration and frequency generated in the annular space.

EFFECT: increasing the reliability of the shut-off mechanism of the valve and ensuring the possibility of HRF passage through the valve, thereby reducing the number of descent and lifting operations for a column of pump and compressor pipes.

4 cl, 4 dwg