Vortex flow guiding device

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...

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

Images