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Gas well downhole drainage and gas production tool based on integration of jet flow and vortexes

A drainage gas production and eddy current technology, which is applied in the fields of production fluids, wellbore/well components, earthwork drilling and production, etc., can solve the problems of easy accumulation of liquid, affecting the liquid carrying capacity of gas wells, and exerting production capacity, and achieves high separation efficiency and reduced The effect of fishing workload and wellbore operation management risk

Active Publication Date: 2017-06-13
PETROCHINA CO LTD
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Problems solved by technology

However, in the later stage of development, with the decline of gas well production, the low-velocity area of ​​the upper part of the nozzle of the downhole restrictor is prone to liquid accumulation, which will seriously affect the liquid carrying capacity and production capacity of the gas well.

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  • Gas well downhole drainage and gas production tool based on integration of jet flow and vortexes

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Embodiment Construction

[0027] The specific embodiment of the present invention will be described in detail below in conjunction with the accompanying drawings, but the present invention is not limited to this embodiment. In order to provide the public with a thorough understanding of the present invention, specific details are specified in the following preferred embodiments of the present invention.

[0028] as attached figure 1 As shown, the present invention is a gas well drainage and gas recovery tool based on the integration of jet flow and vortex flow. The tool is composed of jet generator and vortex generator, mainly including salvage head 1, vortex drainage chamber 2, shell 3, jet nozzle 4, weight ring 5, slips 6, lower slip seat 7, sealing rubber ring 8 , locking device 9, jet guide tube 10, linkage mechanism 11 and sand control cover 12.

[0029] The jet flow generator includes a jet flow guiding cylinder 10, a linkage mechanism 11, slips 6 and a lower slip seat 7, the linkage mechanism ...

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Abstract

The invention discloses a gas well downhole drainage and gas production tool based on integration of jet flow and vortexes. The gas well downhole drainage and gas production tool comprises a jet flow generator, a vortex generator and a fishing assembly, wherein the jet flow generator and the vortex generator are connected; the fishing assembly is connected with the vortex generator; a vortex drainage cavity is formed inside the vortex generator, and spiral blades are arranged on the inner wall of the vortex drainage cavity; and a jet flow nozzle of the jet flow generator communicates with the vortex drainage cavity. By adoption of the internal vortex design, the problem that a jet flow low-flow-rate area carries fluid can be solved, and the problem that as fluid is accumulated on the upper portion of the jet flow generator, back pressure of an outlet of the jet flow nozzle is increased and normal production of a gas well is affected can be effectively prevented.

Description

[0001] 【Technical field】 [0002] The invention relates to an underground drainage and gas recovery tool for gas wells based on the integration of jet flow and vortex flow, which is suitable for drainage and gas recovery of water-producing gas wells with weak jetting and water-producing gas wells that adopt downhole throttling technology in the natural gas exploitation process. [0003] 【Background technique】 [0004] The development and production of water-producing natural gas wells are generally divided into three stages. In the initial stage of production adjustment, the formation water invasion is slight, the energy of the gas well is high, the water production is less, the production is stable, the impact of water production on the production of the gas well is not obvious, and the production can be carried by its own ability; in the stable production stage, the production of the general gas well is greater than the critical The liquid-carrying flow rate can be independen...

Claims

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Application Information

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IPC IPC(8): E21B43/12E21B43/00E21B43/38
CPCE21B43/121E21B43/38
Inventor 尚万宁吕玉海陈虎郝小云张腾刘丽萍宋丽丽刘洋高旺斌尚巨龙
Owner PETROCHINA CO LTD
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