Gas well underground spiral gas-liquid separation liquid drainage and gas production device

Abstract

The invention aims to provide an underground spiral gas-liquid separation liquid drainage and gas production device; and a gas well underground spiral gas and liquid re-injection device comprises an underground spiral gas-liquid separator and a sucker-rod pump, wherein the underground spiral gas-liquid separator comprises an inner tube, an outer tube, a screw panel which plays a diversion role and a baffle; the upper end and the lower end of the inner tube are provided with threaded connectors; the upper end of the outer tube is provided with the threaded connector; the upper end of a circular space formed by the inner tube and the outer tube is provided with an exhaust channel; the lower end of the circular space formed by the baffle and the outer tube is provided with a liquid drainage channel; and the lower end of the circular space formed by the baffle and the inner tube is provided with an inlet for allowing gas and liquid mixture to enter the spiral separator. According to the device, the structure is simple, the underground spiral gas-liquid separator and the sucker-rod pump are matched to automatically separate the gas and the liquid underground, and respectively lift the gas and the liquid onto the ground.

Description

technical field [0001] The invention belongs to the field of gas production engineering, and relates to an underground spiral gas-liquid separation discharge liquid gas production device for gas wells, which uses the production pressure difference as power to automatically realize gas-liquid separation, and lifts the gas and liquid to the ground respectively. Background technique [0002] With the improvement of the development degree of gas reservoirs, more and more gas wells begin to produce liquid, and the liquid production rate is also higher and higher, and the liquid production rate increases. The main hazards are: (1) wellbore liquid accumulation and back pressure increase , the wellhead pressure drops, and the production capacity of the gas well is seriously affected; (2) Liquid accumulates near the bottom of the well, and the gas-producing layer is caused by "water invasion", "water lock", "expansion of water-sensitive clay minerals" and other reasons, making the gas...

AI Technical Summary

Problems solved by technology

[0002] With the improvement of the development degree of gas reservoirs, more and more gas wells begin to produce liquid, and the liquid production rate is also higher and higher, and the liquid production rate increases. The main hazards are: (1) wellbore liquid accumulation and back pressure increase , the wellhead pressure drops, and the production capacity of the gas well is seriously affected; (2) Liquid accumulates near the bottom of the well, and the gas-producing layer is caused by "water invasion", "water lock", "expansion of water-sensitive clay minerals" and other reasons, making the gas phase Permeability is greatly harmed, which will seriously affect the ultimate recovery of the gas field

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