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Gas lift liquid drainage nozzle for oil and gas field

A technology for oil and gas fields and sprinklers, which is applied in the fields of production fluids, wellbore/well components, and earth-moving drilling, etc. It can solve the problems of liquid accumulation and backflow, reservoir pollution, etc., so as to prevent the risk of backflow, solve the accumulation of liquid in gas wells, and operate flexibly. Effect

Pending Publication Date: 2021-06-22
SOUTHWEST PETROLEUM UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] While the high-pressure gas gives downward pressure to the liquid accumulation in the oil pipe, it is easy to cause part of the liquid accumulation to flow back to the formation and cause pollution to the reservoir. Therefore, this invention proposes a modified gas-lift liquid discharge nozzle for oil and gas fields

Method used

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  • Gas lift liquid drainage nozzle for oil and gas field

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Embodiment Construction

[0012] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0013] see figure 1 , the present invention provides a technical solution: comprising an air injection nozzle 1 and a liquid discharge mechanism 4, the bottom of the gas injection nozzle 1 is provided with an exhaust hole 3, and the gas injection nozzle 1 is fixedly provided with a liquid discharge mechanism 4, so An air injection channel 2 is formed between the gas injection nozzle 1 and the liquid discharge mechanism 4, and the liquid accumulation channel pi...

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Abstract

The invention discloses a gas lift liquid drainage nozzle for an oil and gas field. The gas lift liquid drainage nozzle comprises a gas injection nozzle and a liquid drainage mechanism, wherein a gas exhaust hole is formed in the bottom of the gas injection nozzle; the liquid drainage mechanism is fixedly arranged in the gas injection nozzle; a gas injection channel is formed between the gas injection nozzle and the liquid drainage mechanism; a liquid accumulation channel pipe is arranged in the liquid drainage mechanism and extends out of the gas injection nozzle; a plug rod is arranged above the other end of the liquid accumulation channel pipe; the other end of the plug rod is connected with a corrugated compression pipe; and the other end of the corrugated compression pipe is connected with a liquid drainage pipe. The gas lift liquid drainage nozzle is flexible to operate, the problem of liquid accumulation of a gas well can be efficiently solved, and the risk of backflow is prevented.

Description

technical field [0001] The invention relates to the technical field of gas lift and liquid drainage in oil and gas fields, in particular to a gas lift and liquid drainage nozzle for oil and gas fields. Background technique [0002] With the deepening of the development and production of oil and gas fields, fluid accumulation often occurs in the wellbore of oil and gas wells, which affects the production of oil and gas fields. It is necessary to discharge the fluid accumulation in the wellbore to resume production of oil and gas wells. An economical and effective liquid drainage method. Its working principle is to connect the coiled tubing strings in series and lower them into the tubing to a set drainage depth, and pressurize high-pressure gases such as natural gas and nitrogen through the ground pressurization equipment and inject them into the coiled tubing. In the column, the high-pressure gas enters the coiled tubing string and the annulus area of ​​the tubing through th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B43/12E21B41/00
CPCE21B41/0078E21B43/122
Inventor 钟海全赵成杰郑浩权
Owner SOUTHWEST PETROLEUM UNIV
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