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Low pressure oil well liquid level automatic monitoring device

An automatic monitoring and automatic control device technology, applied in the direction of measurement, wellbore/well components, earthwork drilling and production, etc., can solve the problems that affect the popularization and promotion of automatic liquid level monitoring, low reliability, high equipment price, etc., and achieve weight Lightweight, simple structure and low cost

Inactive Publication Date: 2011-11-30
岳强
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AI Technical Summary

Problems solved by technology

With the promotion and popularization of digital oilfields, the demand for this type of automatic equipment has a large market space. Due to the high price, complex structure and low reliability of existing equipment, it directly affects the popularization and development of automatic liquid level monitoring technology. to promote

Method used

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  • Low pressure oil well liquid level automatic monitoring device
  • Low pressure oil well liquid level automatic monitoring device

Examples

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Embodiment Construction

[0017] Such as figure 1 As shown, a low-pressure oil well liquid level automatic monitoring device includes a protective cover housing 9, a partition 3, an oil well casing connection interface 1, an automatic control device 12, a microphone 2 and a pressure sensor 10, and the protective cover housing 9 There is a gas sound wave generating device inside, the front end communicates with the outside of the partition 3, and the rear end communicates with the outside of the protective cover shell 9; a pressure sensor 10 is arranged inside the partition 3, and the automatic control device 12 communicates with the micro Sounder 2, pressure sensor 10 and gas sound wave generating device are connected.

[0018] The gas sound wave generating device includes a solenoid valve 6, a filter 4, a connector 5 and an exhaust port 7, the inlet end of the solenoid valve 6 is connected to the connector 5, and the gas outlet end of the solenoid valve 6 is connected to the exhaust port 7 , The fron...

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Abstract

The invention relates to an automatic monitoring device for the liquid level of a low-pressure oil well, which is suitable for a low-pressure oil well whose wellhead casing pressure is between 0.05 and 5 MPa, and uses the casing gas of the oil well itself to test the depth of the liquid surface. A low-pressure oil well liquid level automatic monitoring device, including a protective cover shell, a partition, an oil well casing connection interface, an automatic control device, a microphone and a pressure sensor. The outer side of the partition communicates, and the rear end communicates with the outer side of the protective cover shell; a pressure sensor is arranged on the inner side of the partition, and the automatic control device is connected with the microphone, the pressure sensor and the gas sound wave generating device through wires. The invention can be placed in the field for a long time without human guard, and has the characteristics of low cost, small volume, light weight, simple structure, convenient use, safe operation and the like.

Description

technical field [0001] The invention relates to a monitoring device for automatically monitoring the dynamic liquid level depth of a low-pressure oil well, which belongs to the technical field of oil production and gas production in oil production engineering, and is mainly used for automatic and continuous measurement of the liquid level and casing pressure of low-pressure oil wells in oil fields. Background technique [0002] There are about 100,000 oil wells in my country, 90% of which have casing pressure below 5MPa, which belongs to low-pressure oil wells, and most of the wells in domestic oil fields are below 1MPa. [0003] In the process of oil production in oil field, it is an important work to test the change of oil well liquid level. It is necessary to repeatedly measure the oil well annulus liquid level depth and wellhead casing pressure at certain time intervals within one day or several days. [0004] The liquid level automatic monitoring equipment currently in...

Claims

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Application Information

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IPC IPC(8): E21B47/04E21B47/14
Inventor 岳强
Owner 岳强
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