Shaft liquid level monitoring device

A monitoring device and wellbore technology, which is applied in construction and other directions, can solve the problems of low liquid level monitoring accuracy and unrealistic liquid level monitoring devices, and achieve the effect of isolating noise and ensuring safety

Pending Publication Date: 2021-01-05
CHINA PETROLEUM & CHEM CORP +1
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  • Abstract
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  • Claims
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AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a wellbore liquid level monitoring device to solve the problem that the liquid level mon

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Example Embodiment

[0028]The embodiments of the present invention will be further described below in conjunction with the drawings.

[0029]A specific embodiment of the wellbore liquid level monitoring device of the present invention, such asfigure 1 As shown, the wellbore liquid level monitoring device includes a sealed box 1, a microphone 5 for receiving reflected waves, and a wellbore casing joint 8 for communicating with the wellhead to be monitored to communicate casing gas. The sealed box 1 is in turn The inlet solenoid valve 2, the intermediate air chamber 4 and the pressure relief solenoid valve 3 are threadedly connected. The microphone 5 is connected in series between the inlet solenoid valve 2 and the wellbore casing joint 8. A pressure gauge is provided at the wellbore casing joint 8. 11.

[0030]The intake solenoid valve 2 and the pressure relief solenoid valve 3 are both high-pressure anti-sulfur hollow and normally closed solenoid valves. The intake valve inlet of the intake solenoid valve 2 ...

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Abstract

The invention relates to a shaft liquid level monitoring device. The shaft liquid level monitoring device comprises a microphone used for receiving reflected waves, and further comprises a shaft sleeve joint, an air inlet electromagnetic valve, a middle air chamber and a pressure relief electromagnetic valve which are connected in sequence, and the pressure relief electromagnetic valve is providedwith a pressure relief valve outlet used for being communicated with external atmosphere or a gas treatment device. The shaft liquid level monitoring device further comprises an air inlet side air pressure sensor, an air outlet side air pressure sensor and a controller, the air inlet side air pressure sensor and the air outlet side air pressure sensor are in signal connection with the controller,and the air inlet electromagnetic valve and the pressure relief electromagnetic valve are in control connection with the controller. Opening and closing of the air inlet electromagnetic valve and thepressure relief electromagnetic valve are separately controlled through the controller, then the pressure of the middle air chamber is controlled, the pressure difference between the air inlet side and the air outlet side of the air inlet electromagnetic valve can be accurately controlled to be a set pressure difference, the set pressure difference can correspond to sound wave signals with a highsignal-to-noise ratio, and the liquid level monitoring precision is guaranteed.

Description

technical field [0001] The invention relates to a wellbore liquid level monitoring device. Background technique [0002] High-sulfur gas fields are rich in geological reserves. During the development of high-pressure, high-sulfur gas wells producing liquid, long-term continuous monitoring of wellbore liquid level depth has important guiding significance for the adjustment of working systems and the formulation of measures for high-pressure liquid-producing gas wells. In the prior art, the echo method is used to monitor the high-pressure continuous liquid level, and the casing gas is released by controlling a single solenoid valve instantaneously to generate an acoustic signal. It is equipped with a high-precision microphone for receiving reflected waves. By analyzing and processing the propagation time of the sound wave in the barrel, the depth of the wellbore liquid level can be obtained. The specific liquid level monitoring device such as the authorized announcement number...

Claims

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Application Information

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IPC IPC(8): E21B47/047
Inventor 党军胜张庆生张文昌周泉泉李涛张建军陈永浩习思阳
Owner CHINA PETROLEUM & CHEM CORP
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