Gas well opening and ice blockage slowing device

A technology for gas wells and ice plugging, which is applied to wellbore/well components, production fluids, and earth-moving drilling, etc. It can solve the problems of increasing the difficulty of gas well management and maintenance and the consumption of manpower and material resources, saving manpower and material resources, and enhancing airflow carrying capacity. Liquid, the effect of reducing the adhesion of liquid phase

Pending Publication Date: 2021-02-26
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, in the process of opening the well, if there is a freeze-blocking situation, it can only be solved by injecting alcohol at the wellhead after the freeze-blocking or waiting for a period of time, and repeating the well-opening attempt many times to solve it, which increases the difficulty of gas well management and maintenance and consumes manpower and material resources

Method used

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  • Gas well opening and ice blockage slowing device
  • Gas well opening and ice blockage slowing device
  • Gas well opening and ice blockage slowing device

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Embodiment Construction

[0023] Below in conjunction with accompanying drawing, the present invention is described in further detail:

[0024] Such as figure 1 As shown in the figure, a gas well opening slowing ice blockage device includes a vortex purge part 1 located upstream and a hydrate filter part 2 located downstream; the upstream vortex purge part 1 includes an upper oil pipe 3 welded to the upper oil pipe 3 The upper end flange 11 of the purge part and the lower end flange 5 of the purge part, the central rod 8, and the swirl vane 7; the downstream hydrate filter 2 includes the lower oil pipe 4, the filter filter welded on the lower oil pipe 4 The upper end flange 6 of the filter, the lower end flange 12 of the filter, the filter tube bundle 9 and the tube bundle seat 10 arranged in the lower oil pipe 4; the upstream vortex purge part 1 and the downstream hydrate filter part 2 pass through the lower end of the purge part The flange 5 is connected to the flange 6 at the upper end of the filte...

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Abstract

The invention discloses a gas well opening and ice blockage slowing device. The device comprises a vortex purging part located on the upper stream and a hydrate filtering part located on the lower stream; the vortex purging part comprises an upper oil pipe, a purging part upper end flange and a purging part lower end flange are fixed to the two ends of the upper oil pipe correspondingly, and a center rod is arranged in the upper oil pipe; rotational flow blades are fixed to the center rod, and starting ends and tail ends of the rotational flow blades are fixed to the inner wall of the upper oil pipe; the hydrate filtering part comprises a lower oil pipe, a filter upper end flange and a filter lower end flange are fixed to the two ends of the lower oil pipe correspondingly, and a filteringpipe bundle is fixed in the lower oil pipe through a pipe bundle base; and the vortex purging part and the hydrate filtering part are connected through the purging part lower end flange and the filterupper end flange. According to the gas well opening and ice blockage slowing device, hydrate particles larger than the inner diameter of a wellhead flow meter flow channel and generated in the needlevalve throttling well opening process can be filtered, the well opening freezing and blocking phenomenon of a gas well is relieved, the well opening success rate of the gas well is increased, and themanagement and maintenance difficulty of the gas well is reduced.

Description

technical field [0001] The invention relates to the technical field of natural gas exploitation, in particular to a gas well opening slowing ice plugging device. Background technique [0002] When the pressure recovery of some gas wells is relatively high, whether it is the manual needle valve for opening and closing the wellhead or the electric needle valve for automatic opening and closing of the well, it is unavoidable due to the throttling phenomenon in the process of opening the well. There is a cooling phenomenon, and when the temperature and pressure meet the conditions for hydrate formation, hydrates will be generated in the wellhead pipeline. [0003] As the well opening process proceeds, the gas flow will blow some hydrate particles to the flow meter downstream of the wellhead pipeline. Due to the narrow flow path of the flowmeter, some ice particles will block the flow path of the flowmeter, causing blockage at the flowmeter and blockage of the wellhead pipeline....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B43/38E21B43/00
CPCE21B43/00E21B43/38
Inventor 陈勇桂捷刘双全肖述琴杨旭东卫亚明白晓弘田伟汪雄雄李耀德赵彬彬
Owner PETROCHINA CO LTD
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