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Step-by-step axial extrusion throttling device of elastic double rubber tube

A throttling device, elastic technology, applied in wellbore/well components, sealing/packing, earth-moving drilling, etc., to achieve the effect of easy unsealing

Active Publication Date: 2022-02-01
QINGDAO TECHNOLOGICAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to effectively solve the downhole throttling problem of conventional gas wells and unconventional gas wells, and overcome the defects and insufficiencies of existing downhole throttling technology and throttling devices, the purpose of the present invention is to provide a suitable for conventional gas wells and unconventional gas wells. The elastic double rubber cylinder step-by-step axial extrusion throttling device

Method used

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  • Step-by-step axial extrusion throttling device of elastic double rubber tube
  • Step-by-step axial extrusion throttling device of elastic double rubber tube
  • Step-by-step axial extrusion throttling device of elastic double rubber tube

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Effect test

Embodiment Construction

[0042] exist Figure 1 ~ 3 In the middle, the elastic bump step-by-step axial extrusion throttle is composed of a ferrous locking body 1, a throttling body 2, a double sealing capsule 3, an elastic booster 4, and a tapered glower 5. The throttle device achieves the downhole rapid sitting and salvage by the kaisher locking body 1, complete the sealing and unsapping of the seat by the double sealing rubber 3 and the elastic booster 4, and combined with the tapered throttle 5 and the throttle body 2 form a stable throttle field to effectively solve the routine gas well and the well-defined problem of well-defined wells, and prevent the natural gas hydrate from the underlying process.

[0043] exist Figure 1 ~ 3 In the middle, the elastic bump step-by-step axial squeezing the throttling device is fixed to the tube wall of the tube post, and the boosted matrix of the elastic booster 4 Connect with the downhole screen, the kaisha locking body 1, the throttle body 2 and the elastic booste...

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Abstract

The invention provides a step-by-step axial extrusion throttling device of an elastic double rubber tube, which is applied to downhole throttling of gas wells. The throttling body of the throttling device completes the opening and closing of the slip locking body according to the slip pusher to realize quick setting and fishing downhole, and the thrust provided by the spring body completes the initial extrusion of the lower sealing rubber barrel, according to The pressure difference of the fluid before and after throttling pushes the elastic booster to slide upwards to implement the secondary extrusion of the lower sealing rubber cylinder and the overall extrusion of the upper sealing rubber cylinder, and complete the step-by-step axial extrusion of the lower sealing rubber cylinder The upper and lower sealing rubber tubes smoothly return to the initial free state and are easy to unseal after the rubber tube push sleeve slides downward during salvage. The temperature, pressure and flow rate of the fluid. After the throttling, the fluid is adjusted to a steady flow of upward migration through the center pipe, thereby realizing the downhole throttling of conventional gas wells and unconventional gas wells, and preventing the formation of natural gas hydration during downhole throttling. things.

Description

Technical field [0001] The present invention relates to a conventional gas well and a very well-used well-off device, and more particularly to a step-by-step jet joint in combination with step-by-step axial extrusion and integral squeezing of the spring system and the upper and lower bonders. Streaming device. Background technique [0002] Conventional gas wells and very small air wells use the downhole throttle technology to greatly reduce the pressure of the downstream system of the throttle, improve the gas generating capacity of the gas in the well, reduce the temperature of the natural gas hydrate formed, and improve the production of natural gas hydrates, thereby makes it Natural gas hydrates are not prone to wellheads. [0003] At present, the downhole throttle is mainly divided into two categories: fixed-type downhillifier and active cooling downhill, where the fixed downhole throttle generally applies to the job of new wells, before the sessile flucture, first The prefab...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B33/122E21B31/12E21B23/06
CPCE21B33/122E21B31/12E21B23/06
Inventor 刘新福刘春花王优强何鸿铭吴建军王德祥
Owner QINGDAO TECHNOLOGICAL UNIVERSITY
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