Monitoring system of coal bed gas screw pump well

Abstract

The invention discloses a monitoring system of a coal bed gas screw pump well, comprising a solar control device, a sensor, a multi-parameter recorder, a current transformer, an electric parameter collector, a wireless controller, a liquid level automatic monitor, a central control computer, a portable data acquisition unit and monitoring diagnosis software, wherein the multi-parameter recorder can be used for measuring the voltage and current parameters of the screw pump well through the current transformer and the electric parameter collector and computing the other electric parameters suchas the active power, the power factor and the like; and the data monitoring diagnosis software is arranged in the central control computer and used for receiving test data are received, forming a database, carrying out comprehensive analysis and diagnosis on the test parameters in the database and automatically describing the change conditions of the parameters of the coal bed gas well according to the historic data parameters. The historic recording curves of all the parameter data are expressed in a form of K line graph so that the parameter change of each well in each day and any period oftime can be checked conveniently.

Description

technical field [0001] The invention relates to the technical field of gas recovery in oil production engineering, in particular to a control device for automatically monitoring the well condition of a coalbed methane screw pump, which is applied to the daily management and control of a coalbed methane screw pump. Background technique [0002] At present, there are mainly two types of pumping equipment for coalbed methane wells: one is a rod pump pumping unit, and the other is a screw pump. The screw pump has the advantages of small footprint, high pump efficiency, energy saving, and low one-time investment. It is especially suitable for coalbed methane wells with sand and gas, and has been widely used. However, in the field of coalbed methane, there is still no effective work flow and management method for the daily management of screw pump wells. Basically, problems in wells cannot be discovered in time, problems can not be accurately diagnosed, and preventive measures ca...

AI Technical Summary

Problems solved by technology

High failure rate due to untimely management and lack of effective testing equipment

In addition, the coalbed methane well site has limited conditions, and most of them are driven by pneumatic motors, which is very different from the application of screw pumps in oil fields and other fields. At present, there is no monitoring equipment for screw pump wells suitable for coalbed methane characteristics.

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