Target type flow sensor and target type flow meter for measuring quality and flow of steam of thermal production well

Abstract

The invention discloses a target type flow sensor and a target type flow meter for measuring quality and flow of steam of a thermal production well, and belongs to the technical field of fluid quality and flow measuring devices. The target flow sensor for measuring quality and flow of the steam of the thermal production well comprises a barrel, a limiting seat and a target guide rod, wherein a fluid inlet is formed in the barrel; the limiting seat is arranged on the inner wall of the barrel; the target guide rod is arranged in the axial direction of the barrel and penetrates in the limiting seat; a target slice is arranged at the front end of the target guide rod; a moving magnetic core is arranged at the rear end of the target guide rod; an elastic element which is positioned on the outer side of the target guide rod is arranged between the moving magnetic core and the limiting eat; a fixed magnetic core inductor which is positioned on the outer side of the moving magnetic core is further arranged in the barrel; the fixed magnetic core inductor and the moving magnetic core form a closed magnetic circuit; fluid can push the target guide rod to move so as to change facing area and inductance value of the moving magnetic core and the fixed magnetic core inductor. The target type flow sensor is in an axial built-in type, occupies small space in the transverse direction, and is suitable for narrow space such as underground space.

Description

technical field [0001] The invention relates to the technical field of fluid mass flow measurement devices, in particular to a target flow sensor for measuring steam mass flow in thermal recovery wells and a target flow meter including the target flow sensor. Background technique [0002] With the increasing depletion of conventional crude oil resources, the exploitation of abundant heavy oil or heavy oil resources by thermal oil recovery is an important measure and a promising development direction for increasing crude oil production in oilfields. In thermal oil recovery, steam huff and puff and steam flooding are widely used in oil recovery. Both of them need to inject high-temperature and high-pressure steam into the steam injection well, so that the steam can penetrate into the oil reservoir, and transfer the steam displacement and heat to the steam injection well. Viscous oil can reduce its viscosity, thermally expand and partially gasify, seep out from pores and remove...

AI Technical Summary

Problems solved by technology

However, the existing target-type flow sensor has a structural form in which the force-measuring mechanism is installed from the side of the measuring tube, which is not suitable for use in small and deep wells and high-temperature, high-pressure, and high-humidity working conditions.

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