Spill type atomizer for atomization of accumulated liquid in natural gas well

Abstract

The invention discloses a spill type atomizer for atomization of accumulated liquid in a natural gas well. The spill type atomizer comprises a spill type jet pipe barrel body. A jet nozzle inlet section, a jet nozzle throat pipe and a spill type jet pipe inner cavity are sequentially arranged in the spill type jet pipe barrel body from bottom to top, wherein the jet nozzle inlet section is a taper pipe which is decreased from bottom to top in a linear mode; the jet nozzle throat pipe is a straight pipe; and the spill type jet pipe inner cavity is a taper pipe which is increased from bottom to top in a linear mode. The part, at the jet nozzle throat pipe, of the wall of the spill type jet pipe barrel body is provided with a plurality of reflux holes communicating with the tail end of the jet nozzle throat pipe from top to bottom. Furthermore, a plurality of sealing grooves are formed in the part, at the jet nozzle inlet section, of the outer wall of the spill type jet pipe barrel body from bottom to top. During working, the spill type atomizer is arranged in a natural gas well shaft, an annular reflux gap is arranged between the spill type atomizer and the inner wall of the natural gas well shaft, and the spill type atomizer and the inner wall of the natural gas well shaft are sealed through sealing rings in the multiple sealing grooves.

Description

Technical field: [0001] The invention belongs to the technical field of multiphase flow, and in particular relates to a reflux atomizer used for atomizing fluid accumulation in natural gas wells. Background technique: [0002] In the process of natural gas production, with the continuation of the production time, the gas well bottom pressure and natural gas flow rate gradually decrease, resulting in the produced water or condensate in the bottom of the well cannot be carried out of the gas well with the natural gas flow, and thus remain in the natural gas well . When these water and other liquids cannot be discharged for a long time, they become accumulated at the bottom of the well, forming bottom fluid accumulation. [0003] At present, a lot of research has been carried out at home and abroad on how to effectively solve the problem of liquid accumulation in gas wells and prevent oil and gas wells from being "crushed" by gas well accumulation due to insufficient gas produ...

AI Technical Summary

Problems solved by technology

However, in the actual operation and application of these new technologies, there are many deficiencies: a series of problems such as high requirements for trial range, high cost, and difficult maintenance.

Because the plunger relies on its own gravity to fall in the liquid for gas lift, but the downward speed is slow and the amount of liquid pumped is limited, so continuous gas lift cannot be achieved

At the same time, most of the current drainage gas recovery process equipment needs to replace the pipe string before operation, such as electric submersible pump, plunger, capillary, mechanical pumping, etc., which not only greatly increases the cost of the gas well, but also delays the normal production cycle of the gas well

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