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A Downhole Self-operated Forced Vortex Drainage and Gas Production Device

A technology for forced eddy current and drainage gas production. It is used in the production of fluids, earth-moving drilling, wellbore/well components, etc. It can solve the problems of limited fluid swirl intensity and swirl continuous distance, and achieve easy gas-liquid separation and fluid separation. The effect of conveying, high swirl strength, easy working conditions

Inactive Publication Date: 2020-12-01
XI'AN PETROLEUM UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing vortex drainage and gas recovery devices mainly include downhole vortex drainage and gas recovery tools, jet vortex drainage and gas recovery tools, and downhole full-hole vortex drainage and gas recovery tools. The swirl strength and swirl duration of the fluid are limited

Method used

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  • A Downhole Self-operated Forced Vortex Drainage and Gas Production Device
  • A Downhole Self-operated Forced Vortex Drainage and Gas Production Device
  • A Downhole Self-operated Forced Vortex Drainage and Gas Production Device

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Embodiment Construction

[0025] The present invention will be described in detail below with reference to the accompanying drawings.

[0026] refer to figure 1 , an underground self-operated forced eddy current drainage gas production device, comprising a spinner 1, the spinner 1 and the output gear of the fixed-axis gear train 3 are connected by threads, and the fixed-axis gear train 3 is located inside the frame 2; The gear train 3 is meshed with the pneumatic actuator end 4 through the internal gear. Both the pneumatic actuator end 4 and the central pipe 5 are inserted with elastic shear pins 8. The elastic shear pins 8 connect the pneumatic actuator end 4 and the central pipe 5. To limit the rotation of the pneumatic actuator end 4 around the axis and the axial movement of the elastic body 7; the pneumatic actuator end 4 is inserted in the turbine stator 9, the central pipe 5 is threadedly connected to the turbine stator 9; the upper part of the central pipe 5 is connected to the frame 2 Through ...

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Abstract

The invention relates to a downhole self-supporting forced eddy drainage gas recovery device. The downhole self-supporting forced eddy drainage gas recovery device comprises a spiral slow generator. The spiral slow generator is connected with an ordinary gear train, the ordinary gear train meshes with a pneumatic actuating end through an internal gear, and an elastic shear pin is connected with the pneumatic actuating end and a center pipe. The pneumatic actuating end is inserted into a turbine stator, and the center pipe is connected with the turbine stator. A machine frame is connected to the upper part of the center pipe, and a rubber ring and an elastic body sleeve the outer surface of the center pipe. A pin is installed on the lower part of the elastic body, the pin is connected withthe elastic body and an elastic body spring, and the elastic body spring loosens and is tightly attached to the inner wall of an oil pipe to realize clamping of the whole device when approaching the predetermined position in the lowering process; then the elastic shear pin is cut under the excitation force, the spiral slow generator, the machine frame, the ordinary gear train, the pneumatic actuating end, the center pipe, the turbine stator and the like move downwards along the axis of the oil pipe relative to a coupling, the rubber ring is compressed and subjected to annular clearance gap seal with the oil pipe; and when the spiral slow generator rotates at a high speed, the internal design enables fluid flowing nearby the spiral slow generator to obtain higher swirling intensity.

Description

technical field [0001] The invention relates to the technical field of drainage and gas production in low-pressure and low-yield gas wells, in particular to an underground self-operated forced vortex drainage gas production device. [0002] technical background [0003] The application and mechanism research of vortex drainage gas production technology is gradually mature. The main principle is that after the fluid in the well passes through the vortex drainage gas production tool (device), the original flow pattern will be transformed into annular flow or even annular mist flow , has a significant effect on the improvement of gas well recovery. Existing vortex drainage gas production devices mainly include downhole vortex drainage gas production tools, jet vortex drainage gas production tools, and downhole vortex drainage gas production tools. The swirl intensity and swirl duration of the fluid are limited. SUMMARY OF THE INVENTION [0004] In order to overcome the above...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B43/00E21B43/38
CPCE21B43/121E21B43/38
Inventor 徐建宁席鹏超朱端银王熙
Owner XI'AN PETROLEUM UNIVERSITY
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