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Vortex flow guiding device

A diversion device and eddy current technology, applied in the fields of production fluids, wellbore/well components, earth-moving drilling, etc., can solve the problems of large pressure loss of oil pipes, reduced liquid drainage capacity, poor drainage and gas production effectiveness, etc. The effect of pressure loss, improved drainage capacity and reasonable structure

Active Publication Date: 2015-12-16
DRILLING TECH DEV CO LTD OF TIANJIN DAGANG OILFIELD PETROLEUM ENG INST +2
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the disadvantages of the existing eddy current guiding device, such as poor drainage and gas production efficiency, large oil pipe pressure loss, and reduced liquid drainage capacity, the present invention provides a vortex current guiding device, which can provide an applicable vortex current guiding device according to well conditions

Method used

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Embodiment Construction

[0012] The present invention will be further described below in conjunction with drawings and embodiments. However, those skilled in the art should know that the present invention is not limited to the specific embodiments listed, as long as it conforms to the spirit of the present invention, it should be included in the protection scope of the present invention.

[0013] The eddy current diversion device of the present invention comprises a mandrel 2 and a diversion belt 3, and the diversion belt 3 is spirally wound on the outer surface of the mandrel 2; the upper end of the mandrel 2 has a fishing head 1, and the lower end has a drainage and gas collection The thread for connecting the downhole device; usually the cross section of the diversion zone 3 is rectangular.

[0014] The pitches between the guide belts 3 of the first embodiment of the eddy current guide device of the present invention are not equal, that is, the pitches between the adjacent guide belts 3 spirally wo...

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Abstract

The invention provides a vortex flow guiding device. For overcoming the defects of low water-draining gas-recovery effectiveness, large oil pipe pressure loss and liquid draining capability reduction in an existing vortex flow guiding device. The vortex flow guiding device comprises a core shaft and a flow guiding hose. The flow guiding hose spirally winds the external circular surface of the core shaft. The upper end of the core shaft is provided with a fishing head, and the lower end is provided with a thread which is connected with a water-draining gas-recovery downhole device. The screw pitches of the flow guiding hose which spirally winds the external circular surface of the core shaft are unequal. Two ends of the flow guiding hose are fixedly connected with the core shaft. The vortex flow guiding device is advantageous in that reasonable structure is realized; downhole fluid can be separated and moved more effectively; furthermore the shape of the vortex flow can be adjusted according to different well conditions and the downhole fluid is conveyed to ground more efficiently, thereby improving applicability of a vortex flow water-draining gas-recovery device, effectively reducing pressure loss of the oil pipe and improving efficiency in vortex flow water-draining gas-recovery.

Description

technical field [0001] The invention relates to a downhole device for vortex drainage and gas recovery in gas well exploitation operations, in particular to a vortex guide device in the downhole device for vortex drainage and gas recovery. Background technique [0002] During the production of gas wells, as the production time increases, the formation energy gradually decreases and the water content increases. In the process of gas-liquid two-phase flow, the dissolved gas is prone to slippage effect, and the lifting difficulty continues to increase. In order to meet the requirements of gas well drainage and gas recovery, the downhole vortex drainage gas recovery technology has been developed in recent years. The direction of the inner wall of the tube is that the vortex moves upward in the stratified flow state of the ring film. When the gas-liquid two-phase flow enters the vortex drainage and gas recovery device, the vortex diversion device in it makes the fluid rotate alo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B43/00
Inventor 郭秀庭杨继军强华葛党科郭群姚玉华秦晓冬
Owner DRILLING TECH DEV CO LTD OF TIANJIN DAGANG OILFIELD PETROLEUM ENG INST
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