Device and method for measuring the thickness of inner ring film in the wellbore of vortex drainage and gas extraction tool

Abstract

The invention relates to a device and method for measuring the thickness of the inner ring film in the wellbore of a vortex drainage and gas extraction tool. The measuring device for measuring the thickness of the inner ring film in the wellbore of a vortex drainage and gas extraction tool comprises a multi-phase flow device, an ultrasonic doppler velocimeter and a vortex tool, the multi-phase flow device includes a gas distribution line, a liquid distribution line, a guide rail, a crane mechanism, a manual winch, a plexiglass pipe measuring mechanism, an electronic control device, a computerand an air compressor connected to a mixer through gas distribution line, and a water tank is connected to the mixer through a pump and the liquid distribution line, and the mixer is connected with the corresponding plexiglass pipe through a pipeline, the pipeline is provided with an electric valve, one of the plexiglass pipe is provided with the vortex tool, the plexiglass pipe is mounted on themobile support; the ultrasonic doppler velocimeter is used to measure the thickness and liquid velocity of the ring film. The device can measure the thickness of the inner ring film and the velocity of liquid phase in the wellbore after vortex tool under different well angles and different gas-liquid ratio conditions.

Description

technical field [0001] The invention relates to a vortex tool drainage and gas recovery technology, in particular to a device and a method for measuring the thickness of an annular film in a wellbore where the vortex drainage and gas recovery tool is located. Background technique [0002] In the production process of gas wells, due to the sufficient supply of formation energy and high gas production in the initial stage of natural gas production; as the production progresses, the formation energy gradually decreases, resulting in a decrease in gas production, and the upward lifting force generated by the gas flow is insufficient, and the fluid accumulation in the gas well cannot follow The gas flow is carried out together and gradually accumulates at the bottom of the well, resulting in greater energy loss and further reduction in gas production. In the early stage of gas well water production, the energy supply is sufficient, and the gas volume can carry liquid accumulation...

AI Technical Summary

Problems solved by technology

[0005] An object of the present invention is to provide a device for measuring the thickness of the annular film in the wellbore where the eddy current drainage gas production tool is located. The swirling flow generated behind the tool and the measurement of the thickness of the annular film after stabilization have been a key problem that has not been solved. Another object of the present invention is to provide a device for measuring the thickness of the annular film in the wellbore where the vortex drainage and gas production tool is located for measurement experiments. Methods

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