WELLHEAD EQUIPMENT OF OIL PRODUCING WELLS Russian patent published in 2020 - IPC E21B33/03 E21B34/02 

FIELD: oil and gas industry.

SUBSTANCE: invention relates to the petroleum industry and may be applied to the annular bypass gas into the column of tubing. Wellhead equipment of oil producing wells, having ring plate arranged on flow column flange with eccentrically located coupling part provided for connection to pressure line with tubing string on one side, and on the other side – under T-joint with well gland, radial and vertical holes in flange part of faceplate, communicated with annular space and provided for bypass device installation, as well as for operation with research instruments respectively. Under the faceplate there is a downhole trap of light fractions of hydrocarbons, which consists from top to bottom of the end and thread parts and the buffer zone, under the buffer zone the well trap of light fractions of hydrocarbons is equipped with an inlet valve installed on the seat, with the possibility of movement upwards to the valve stroke limiter equipped with vertical holes in the body of the stroke limiter, wherein threaded part with height of 50–70 mm, providing a hermetic connection to faceplate, along perimeter is equipped with slots for gas bypass with height of slots of 25–30 mm, width of 3 mm and pitch between them of 3 mm, sufficient for connection with radial hole of face table.

EFFECT: wellhead equipment of oil producing wells improves reliability and efficiency of wellhead equipment of oil producing wells by reducing annular pressure in wells operated by screw pumps installations, regardless of temperature conditions of well operation and annular gas pressure value.

1 cl, 3 dwg