An on-line detection device for liquid flow of gas-liquid mixture

Abstract

The invention discloses an online detecting device for the liquid flow of a gas-liquid mixture. The device comprises a liquid inlet pipe, a second valve, a first valve, a third valve, a second switch,a first switch, a first soft rope, a first floating ball, a second soft rope, a second floating ball, a detection oil box, a fifth valve, an exhausting pipe, a seventh valve, a sixth valve, an auxiliary oil box, a fourth floating ball, a fourth soft rope, a third floating ball, a third soft rope, a third switch, a fourth switch, a fourth valve and a liquid drainage pipe. According to the device,oil feeding and liquid drainage of the detection oil box and the auxiliary oil box are controlled by controlling the open and closed states of the valves, the switches are triggered through the floating balls and the soft ropes, then the liquid levels in the oil boxes are detected, and the open and closed states of the valves are controlled according to the liquid levels. The device has the main advantages that the liquid flow in produced liquid is measured in a mechanical mode through coordination action of the switches and the valves, so that effects of the adhesivity of gas and crude oil inthe produced liquid on the measurement result are avoided, the measurement principle is simple, and the result is accurate.

Description

technical field [0001] The invention belongs to the field of oil production engineering, in particular to an online liquid flow detection device. Background technique [0002] In the process of oil extraction, accurate measurement of the liquid flow rate of the produced fluid can calculate the fullness of the pump, and then adjust the pump stroke times, improve oil recovery efficiency, and achieve energy saving and consumption reduction. This is very important for formulating a scientific oil recovery plan. [0003] At present, the flow measuring device used in the oil field is a flow meter. In the process of oil extraction, the produced fluid is generally a gas-liquid mixture, especially in high gas-bearing reservoirs, the gas content of the produced fluid can be as high as 60%, and the liquid flow in the produced fluid cannot be accurately measured by using the existing flowmeter . Moreover, due to the high viscosity of crude oil, it is easy to adhere to the flowmeter, w...

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Problems solved by technology

[0004] Aiming at the problem that existing flowmeters and sensors cannot accurately measure the liquid flow rate when the produced liquid is a gas-liquid mixture in oil production engineering, the invention discloses an online detection device for the liquid flow rate of the gas-liquid mixture

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