Down hole liquid level monitoring alarming system of coal-bed gas well

Abstract

The invention discloses a down hole liquid level monitoring alarming system of a coal-bed gas well and mainly relates to the technical field of coal-bed gas well liquid level monitoring. The down hole liquid level monitoring alarming system comprises a wellhead detecting module, a power supplying module, a correcting phonetic symbol, a wireless transmitting module and a remote control terminal; the wellhead detecting module comprises a shell, a microprocessor, an ultrasonic generator, an ultrasonic transducer, an ultrasonic receiver and a counter are arranged in the shell, the power supplying module comprises a solar energy battery panel, a battery and a city power complementary controller, and wireless transmitting module comprises a cloud database, a base station, a wireless WiFi module body arranged in the shell; and a 4G wireless router is arranged in the base station. The down hole liquid level monitoring alarming system of the coal-bed gas well has the beneficial effects that the ultrasonic ranging principle is adopted, the down hole liquid level of the coal-bed gas well is subjected to real-time monitoring through the wellhead detecting module installed at a wellhead, maintenance is convenient, a detecting result can be transmitted in real time, and working efficiency can be improved.

Description

technical field [0001] The invention relates to the technical field of coalbed gas well liquid level detection, in particular to an underground liquid level monitoring and alarm system for coalbed gas wells. Background technique [0002] The exploitation of coalbed methane is a process of drainage and depressurization, that is, the use of drainage equipment, oil pipe drainage, and casing gas production. With the progress of liquid drainage, the liquid level in the annular space is decreasing, and the pressure of the coal seam is also decreasing. During the exploitation of coal bed methane, it is necessary to continuously monitor the change of the downhole liquid level and adjust the working parameters of the oil well in time. At present, the continuous measurement of the dynamic liquid level depth of coalbed methane wells mainly adopts the method of installing pressure gauges downhole. Installing electronic pressure gauges at the bottom while installing the drainage string i...

AI Technical Summary

Problems solved by technology

At present, the continuous measurement of the dynamic liquid level depth of coalbed methane wells mainly adopts the method of installing pressure gauges downhole. Installing electronic pressure gauges at the bottom while installing the drainage string in the well, the process is relatively complicated and the cost is high. Once downhole instruments or cables appear If there is a failure, it is necessary to stop production and start the pump operation, which seriously affects the production progress, and requires the staff to go to the site to collect monitoring results at regular intervals, which is labor-intensive and low-efficiency

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