Gas well underground rotational flow atomization water drainage and gas recovery device

Abstract

Disclosed is a gas well underground rotational flow atomization water drainage and gas recovery device. A fishing head is connected to the upper portion of a spoiler, the lower portion of the spoiler is connected to the upper end of a flow guide barrel, the lower end of the flow guide barrel is in threaded connection with the upper end of a conical body, and a protruding annular step is arranged on the outer wall of the lower end of the conical body. The outer wall of the conical body is sleeved with an elastic body and connected with the elastic body through a shear pin, and the shear pin is shorn off so that the elastic body can slide on the outer wall of the conical body. The outer wall of the elastic body is connected with one end of a spring pin formed by bending a steel wire. The other end of the spring pin is connected with one end, namely a round end, of a spring, and the other end of the spring is in a bent hook shape. When underground gas-liquid two-phase fluid passes through an inner spoiler layer and an outer spoiler layer, the flow state of the fluid changes, the fluid rotates at high speed to generate shear force and centrifugal force, high-speed gas flow impacts, shears and abrades a low-speed liquid film, fog drops are obtained by damaging surface tension and viscous force of the liquid, and thus atomization is achieved. When the particle sizes of the liquid drops are smaller than a certain critical value, the accumulated liquid can be continuously discharged out of a shaft by means of energy of a gas well, and thus the recovery efficiency of the gas well is improved.

Description

technical field [0001] The invention relates to a downhole tool in the technical field of oil field gas recovery, in particular to a gas well downhole swirl atomization drainage gas recovery device. Background technique [0002] With the continuous deepening of gas field development, the problems of water production and liquid accumulation in gas wells have become increasingly prominent in the production process, and effective drainage and gas recovery technology has become the key to ensuring reasonable and efficient development of gas fields in the middle and late stages. The liquid carrying effect of the gas well is the best when the flow state of the wellbore is annular mist flow. In the middle and later stages of gas well production, the flow state of the wellbore is slug flow, stirring flow, and annular mist flow from bottom to top. The productivity of the gas well is poor and cannot reach When the liquid-carrying flow rate is critical, the bottom of the well begins to...

AI Technical Summary

Problems solved by technology

The liquid carrying effect of the gas well is the best when the flow state of the wellbore is annular mist flow. In the middle and later stages of gas well production, the flow state of the wellbore is slug flow, stirring flow, and annular mist flow from bottom to top. The productivity of the gas well is poor and cannot reach When the liquid-carrying flow rate is critical, the bottom of the well begins to accumulate liquid, and the gas well cannot be produced normally.

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